US6991614B2 - Ureteral stent for improved patient comfort - Google Patents
Ureteral stent for improved patient comfort Download PDFInfo
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- US6991614B2 US6991614B2 US10/406,876 US40687603A US6991614B2 US 6991614 B2 US6991614 B2 US 6991614B2 US 40687603 A US40687603 A US 40687603A US 6991614 B2 US6991614 B2 US 6991614B2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/94—Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
- A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
- A61M27/008—Implant devices for drainage of body fluids from one part of the body to another pre-shaped, for use in the urethral or ureteral tract
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/003—Steerable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00107—Coatings on the energy applicator
- A61B2018/00148—Coatings on the energy applicator with metal
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/0016—Energy applicators arranged in a two- or three dimensional array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2002/048—Ureters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0075—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1078—Urinary tract
- A61M2210/1082—Kidney
Definitions
- This application relates generally to medical devices for drainage of fluids, and more specifically to ureteral stents.
- Ureteral stents are used to assist urinary drainage from the kidney to the bladder in patients with ureteral obstruction or injury, or to protect the integrity of the ureter in a variety of surgical manipulations. More specifically, stents may be used to treat or avoid ureter obstructions (such as ureteral stones or ureteral tumors) which disrupt the flow of urine from the kidneys to the bladder. Serious obstructions may cause urine to back up into the kidneys, threatening renal function. Ureteral stents may also be used after endoscopic inspection of the ureter.
- ureter obstructions such as ureteral stones or ureteral tumors
- Ureteral stents typically are tubular in shape, terminating in two opposing ends: a kidney (upper) end and a bladder (lower) end.
- the ends may be coiled in a pigtail or J-shape to prevent the upward or downward migration of the stent, e.g., with physiological movements.
- a kidney coil can function as a distal retention structure, designed to retain the stent within the renal pelvis of the kidney and to prevent stent migration down the ureter.
- the bladder coil sits in the bladder and is designed to prevent stent migration upward toward the kidney.
- the bladder coil is also used to aid in retrieval and removal of the stent.
- Ureteral stents particularly the portion positioned in the ureter near the bladder and inside the bladder, may produce adverse effects including blood in the urine, a continual urge to urinate, strangury, and flank pain accompanying reflux of urine up the stent (e.g., when voiding) as pressure within the bladder is transmitted to the kidney.
- stents may cause or contribute to significant patient discomfort and serious medical problems.
- FIG. 10 is a schematic drawing of the human urinary tract without a stent, showing the renal pelvis 19 , the kidney 23 , the ureter 24 , and the ureteral orifices 18 opening into the bladder 20 .
- FIG. 11 depicts a typical double-J stent 10 which comprises a small tube 12 which sits inside the urinary system and assists the flow of urine from the kidney (renal pelvis) to the bladder.
- FIG. 12 depicts prior art indwelling ureteral stent 10 in position.
- Such stents are typically made of biocompatible plastic, coated plastic, or silicone material. Tube 12 typically varies in size from 4–8 F, and it has multiple small holes throughout its length.
- a coiled shape pre-formed at each end (distal end 14 and proximal end 16 ) of the stent 10 is designed to confine its movement within the urinary system, so that it will be maintained in the desired position.
- the upper (kidney) end (the distal end 14 ) of the stent can include a distal retention structure 104 .
- the distal end 14 may be closed or tapered, depending on the method of insertion (e.g., the use of a guidewire).
- the tubular stent extends through the ureteral orifice 18 a and into the bladder, fixing orifice 18 a open, and thereby enhancing the opportunity for reflux. For clarity, the ureter entering bladder 20 through orifice 18 b is not shown.
- a monofilament thread 22 may be attached to the bladder end of the stent for removal, usually without cystoendoscopy.
- U.S. Pat. No. 4,531,933 (“the '933 patent”) discloses a ureteral stent having helical coils at each end which are provided for preventing migration and expulsion.
- the invention features a thin, flexible elongated tail member having an elongated external urine-transport surface.
- Urine flows along the outside surface of the structure, between that surface and the inside wall of the ureter. Without limiting our to a specific mechanism, it appears that urine may remain attached to, and flow along, the external urine transport surface.
- the external urine transport surface is sized and configured to extend along at least part of the ureter near the bladder, across the ureter/bladder junction, and from there through the ureteral opening into the bladder.
- the stent While most or all of the length of the stent may rely on such an external surface to assist flow, more typically the stent will also include an upper elongated tubular segment to transport urine along a significant portion of the upper ureter.
- the upper tubular segment is connected at its lower end to an elongated tail that has the above-described external urine-transport surface.
- the upper tubular segment comprises: a) an upper region having at least a first opening; b) a lower region having at least a second opening to be positioned in the ureter outside the bladder, and c) a central lumen connecting the first opening to the second opening.
- the elongated tail is a thin flexible tail member or filament(s) extending from the lower region of the tubular segment at a point outside the bladder so as to receive urine from the second opening of the tubular segment and to transport urine along the ureter from the lower region of the tubular segment across the ureter/bladder junction and into the bladder.
- the upper region of the tubular segment is configured and sized for placement in the renal cavity.
- the elongated tail member can include at least one (and more preferably at least two) thread filaments(s). Two or more of the filaments may be configured in at least one filament loop, and, advantageously, the tail comprises no unlooped filaments, so that the tail is free from loose ends.
- the loop(s) can be made by joining the ends of a single filament, in which case the filament loop comprises a junction of individual filament ends, which junction typically is positioned at the point where tail joins to the elongated tubular segment.
- the tail is long enough to effectively prevent migration of the entire tail into the ureter, and the tail has a smaller outer diameter than the outer diameter of the tubular segment.
- the tubular stent segment can be stiff enough to avoid crimping during insertion through the ureter, so that it can be inserted by typical procedures.
- the tail on the other hand, can be extremely flexible (soft) in comparison to the tubular segment, and it can have a much smaller diameter than the tubular segment, to avoid discomfort. Even quite thin structures can provide urine transport, and the thinner and more flexible the tail is, the less likely it is to cause patient discomfort.
- the tail (and its connection to the rest of the stent) should have sufficient strength so the stent can be retrieved by locating the tail in the bladder and pulling on the tail to retrieve the stent from the kidney and ureter. Details of the tail size are discussed below.
- reinforcing materials e.g., sutures as described below
- the tail may be a suture, and the suture may be coated to avoid encrusting.
- the external urine-transport surface of the tail can be convex (circular or oval in section), concave, or flat.
- the tail filament may be fluted.
- the tail can include an accurately shaped anchor segment to control migration up the ureter.
- the tail may be either solid or hollow; even when hollow; it is not designed to transport a significant amount of urine internally.
- the tail may also be tapered.
- the upper region of the tubular segment may have a portion designed for placement in the renal cavity, which portion can have an enlarged diameter and/or straight sides and corners.
- the stent may include an extractor thread attached to the lower end of the elongated tail member.
- the tail may be molded in one piece with the tubular segment, or it may be made separately and attached to the bladder end region of the tubular segment at a point toward the kidney from the bladder end of the lower region of the tubular segment. In one embodiment, the tail can be attached near or at the bladder end of the bladder end region of the tubular segment.
- the stent may include a suture securing the tail to the tubular segment, and the suture may be incorporated into the tail to impart strength to the tail so the tail may be used to retrieve the stent. If the tail includes a hollow lumen, the suture may be positioned inside that lumen.
- the suture may be attached to the tubular segment at a point in the bladder end region of the tubular segment, and the suture may extend from the point of attachment through an opening in the bladder end region to the central lumen of the tubular segment and from there to the hollow tail.
- at least the bladder end region of the tubular segment may include two lumens, a main urine-transporting lumen, and a bladder lumen to encase the suture, so that the suture does not become encrusted.
- the outer diameter of the tubular segment can be tapered so that it decreases approaching its lower region.
- the lower region of the tubular segment may include multiple openings positioned, e.g., axially along include its length or radially around its circumference, or in other patterns.
- the outer diameter of the stent's tubular segment may decrease approaching the upper region.
- the maximum diameter may be at the site of the injury to encourage a sufficiently large inner diameter in the repaired structure, and the tubular segment's outer diameter may decrease moving away from that point of maximum diameter to sections of the normal ureter that are not in need of a broad support structure.
- the outer diameter of the upper end of the tubular segment will be greater than the other diameter of the bladder end.
- the upper region may include multiple openings (inlets).
- the elongated external urine-transport surface is a continuous surface extending from the kidney to the bladder, e.g., it is the outer surface of a solid member extending from the kidney to the bladder.
- Another aspect of the invention features a method of introducing a ureteral stent (described above) into a patient, by (a) positioning the kidney end region of the tubular segment within the renal pelvis; and (b) positioning the elongated flexible member(s) in the bladder.
- Yet another aspect of the invention features a method of manufacturing a ureteral stent as described above.
- the method comprises: (a) providing a polymer preform having a tubular shape; (b) forming an elongated tubular stent segment from the polymer pre-form, and (c) providing tail member(s) at an end region of the tubular segment.
- a ureteral stent comprising a distal region that includes a tubular body defining a lumen, and a distal retention structure.
- the distal retention structure maintains a position of the ureteral stent within the body with respect to a kidney.
- the ureteral stent also includes a proximal region in fluid communication with the distal region and including a distal portion that includes a junction with the distal region.
- the proximal region can comprise a pliable portion disposable within a ureteral orifice and in communication with the distal portion. The pliable portion is compressible upon the exertion of a body pressure, such as a pressure exerted by the ureteral orifice.
- the proximal region can also include a proximal portion that comprises one or more flexible filaments.
- the filament(s) form at least one loop that has a length sufficient to remain within the bladder when the distal retention structure is positioned within the kidney, but the length is insufficient to allow the loop to substantially contact the urethra.
- Embodiments of this aspect of the invention include filaments that have a retention force insufficient to maintain the ureteral stent within the bladder.
- the pliable portion of the stent can extend distally from the ureteral orifice about 3 centimeters or more, and the pliable portion can include a soft section of tube or soft section of the stent compared to other sections of the stent, that is compressible by body pressure.
- the pliable portion includes a distal end of the plurality of the filaments. Upon exertion of the pressure, the pliable portion can collapse sufficiently to inhibit urine reflux.
- filaments that are sufficiently resilient to provide drainage (e.g., of urine) through an interstitial space.
- the interstitial space can be defined by the filaments and can be in fluid communication with the lumen of the distal region.
- the interstitial space can be at least partially collapsible by body pressure.
- An embodiment includes at least one loop that is formed from a continuous filament. Two or more loops can be formed, and each loop can be formed from a single filament.
- the pliable portion can include a distal end of the filaments, and the filaments can be configured to minimize any sharp edges at the junction.
- the proximal region can be integrally formed with the distal region, and the distal region can have a hardness that is greater than the hardness of the proximal region. In some embodiments the hardness of the stent gradually decreases from a distal location of the distal region to a proximal location of the proximal region.
- the distal region typically has a hardness value of at least about 80–110 Shore A, although some embodiments can include a distal region with a hardness of about 60–80 Shore A.
- the proximal region can have a hardness of about 60–80 Shore A.
- the length of loops formed by the filament(s) can be sufficient to maintain at least a portion of the stent within the bladder after intubation of the stent, including upon routine movement of the kidney and the bladder.
- the filaments can also have sufficient tensile strength to provide for extubation of the stent via the bladder or urethra.
- the ureteral stent can include a lubricious coating, and the tubular body of the stent can include one or more openings disposed along its length.
- a ureteral stent comprising a distal region that includes a tubular body defining a lumen, and a distal retention structure.
- the distal retention structure maintains a position of the ureteral stent within the body.
- the stent also includes a proximal region in communication with the distal region.
- a portion of the proximal region is disposable within a ureteral orifice and includes a plurality of flexible filaments compressible upon the exertion of a body pressure, such as by a ureteral orifice.
- the filaments form at least one loop and have a length sufficient to remain within the bladder when the distal retention structure is positioned within the kidney, but the length is insufficient to allow the loop to substantially contact the prostatic urethra.
- Yet another aspect of the invention features a medical device comprising a distal region that includes a tubular body defining a longitudinal axis and at least one lumen, the distal region including a distal retention structure.
- the medical device also includes a proximal region in fluid communication with the distal region, the proximal region comprising a distal portion and a proximal portion.
- the proximal portion includes at least two filaments forming at least two loops that define an interstitial space.
- the interstitial space is in fluid communication with the lumen.
- the loops are flexible, such that a pressure of the body can compress the interstitial space.
- the medical device has a hardness that gradually decreases from a distal location of the distal region to a proximal location of the proximal region.
- the stent may be manufactured from a polymer form having a tubular shape by forcing the form onto a mandrel to produce the desired three-dimensional shape (coils, etc.).
- the elongated tail member(s) or filament(s) can be attached to one end of the tubular member(s) using sutures as described above. Heat treatments to fuse the structures and/or standard adhesives may be used.
- the tubular member(s) and the elongated member or filament(s) can be integrally formed, constituting a one-piece stent.
- the use of relatively thin, flexible elongated member(s) or filament(s) to assist urine flow across the uretero-vesical junction and into the bladder may reduce reflux and irritation, thereby reducing patient discomfort and medical problems associated with other types of ureteral stents.
- FIG. 1 is a side view of a ureteral stent with a central portion of the tubular segment omitted.
- FIG. 2 is a cross-sectional view along line 2 — 2 in FIG. 1 .
- FIG. 3 is an enlarged side-view of a portion of the ureteral stent in FIG. 1 .
- FIG. 4A is a view of an alternate embodiment of the stent in FIG. 1
- FIG. 4B is a section taken along 4 B— 4 B of FIG. 4A .
- FIGS. 5A and 5B are schematic representations of another stent according to the invention, depicted in place.
- FIGS. 6 A— 6 D depict alternative cross-sections of the tail of a stent according FIG. 5 .
- FIG. 7 is a schematic representation of yet another stent according to the invention, having an extraction thread.
- FIG. 7A is an enlargement of a portion of FIG. 7 .
- FIG. 8 is a schematic representation of the stent of FIG. 7 shown in position.
- FIG. 8A is a detail of the connection between the tail and the extraction thread.
- FIG. 8B is a cross-section of threads of differing softness, showing the effect compression on interstitial space.
- FIG. 9 shows an alternative embodiment of the stent.
- FIG. 10 is a schematic drawing of the human urinary tract without a stent, showing the renal pelvis, the kidney, the ureter, and the ureteral orifices opening into the bladder.
- FIG. 11 depicts a prior art double-J stent outside the body.
- FIG. 12 depicts a prior art J indwelling ureteral stent in position.
- FIG. 13 illustrates an embodiment of a ureteral stent of the invention comprising a proximal region including a loop formed from one or more flexible filament(s).
- FIGS. 14 and 14A depict an embodiment of a ureteral stent including a pliable portion.
- FIGS. 15–15C , 15 C′, and 15 C′′ illustrate embodiments of ureteral stents including a pliable portion, in which the pliable portion includes loops with one or more flexible filament(s).
- FIGS. 16A–16B illustrate general placement in the body of embodiments of ureteral stents comprising loops formed of one or more flexible filament(s).
- ureteral stent 100 includes an elongated tubular body 130 connecting coil end 140 to straight end region 120 .
- Tubular body 130 is designed to extend from the renal pelvis through the ureter to a terminus upstream of the bladder.
- Tail 110 is attached to straight end region 120 , and tail 110 extends along the ureter, across the ureter/bladder junction and into the bladder.
- Coiled end region 140 is designed to be placed in the renal pelvis of the kidney.
- coiled end region 140 is shown with a pigtail helical coil although any shape that will retain the stent in place within the kidney will do.
- Coiled end region 140 includes several openings 125 placed along the wall of the tubular body; the openings may be arranged in various geometries (e.g., axial, circumferential, spiral). The entire tubular segment, including the region between the kidney and the bladder end regions, may include additional openings.
- the bladder end region 120 of the tubular stent segment is designed to terminate in the ureter, upstream of the bladder.
- the end region of stent 100 received in the kidney will be designated the kidney end and the opposite end of stent 100 toward the bladder will be termed the bladder end.
- FIG. 2 is a cross-sectional view of stent 100 of FIG. 1 .
- elongated tubular body 130 has annular walls 250 having an inner and outer diameter.
- the outer diameter of tubular body 130 may be substantially uniform throughout much of the length of the tube, or it may taper from a relatively short region of larger diameter (the site of the repair, where there is a risk that the healing process will substantially restrict flow in the lumen) to a region of generally small diameter.
- the precise configuration may depend on the ureteral defect being corrected.
- ureteropelvic junction Procedures for treating ureteropelvic junction (UPJ) obstruction by an incision which perforates the ureter at the stricture.
- the stent keeps the ureter lumen open during the healing process, so that the inner diameter of the resulting healed structure is adequate.
- the section of the tubular segment at the defect is large enough to support growth of repair tissue having an adequate inner diameter.
- the outer diameter of the tubular segment may be far smaller, but with an inner diameter adequate for passage over a guidewire.
- the outer diameter of the bladder end region of the tubular segment typically is 2F–12 F.
- the outer diameter of tubular body 130 is greatest at the ureteropelvic junction obstruction but begins to taper approaching each end.
- the upper (kidney) portion of the tubular body 130 may be uniform in diameter, tapering just in the lower (bladder) portion.
- Tubular body 130 defines a central lumen or passageway 260 , extending from kidney end region 140 to bladder end region 120 .
- the inner diameter of lumen 260 is sufficient to permit passage over a guidewire.
- Tubular body 130 may also have openings 125 extending through its walls 250 to facilitate the flow of urine from the kidney into central lumen 260 and openings 127 to facilitate flow out of central lumen 260 .
- the outer diameter of elongated tubular body 130 tapers near bladder end region 120 .
- the outer diameter of bladder end region 120 may be made as small as possible while maintaining the ability to pass over a guidewire.
- Elongated tubular body 130 may (but need not be) substantially straight in bladder end region 120 , i.e. it does not coil or curve in the absence of external force.
- tail 110 is a single filament, it typically is thinner than even the smallest portion of bladder end region 120 of the tubular stent segment.
- Tail 110 may be attached at or near the end of region 120 , and it extends from that attachment into the bladder.
- Tail 110 can be either solid or hollow. It can be generally cylindrical in shape; alternatively, it can be fluted, concave (quarter-moon)-shaped or it may assume other shapes.
- the tail can have an outer diameter that is significantly less than the inner diameter of the ureter (typically 2–5 mm) and no greater than the outer diameter of the tubular segment from which it extends.
- the tail diameter can be less than 10 F and as low as a suture (about 0.5 F).
- the tail diameter is between 2 F and 4 F.
- the length of tail 110 is preferably between 1 and 100 cm. In one embodiment, the tail is long enough so that at least a portion of it will remain in the bladder, and effectively the entire tail cannot migrate up into the ureter. A length of between 1 and 40 cm can be effective for this purpose.
- Tail 110 is flexible and, upon application of force, can be curved, but also has memory such that when the force is removed, it is generally straight.
- Stent 100 including tail 110 and tube 130 , may be a single unit.
- tail 110 can be a unified piece, extending from bladder end region 120 with no additional attachment means.
- tail 110 can be secured to elongated tube 130 or bladder end region 120 by physical or mechanical methods.
- a suture 415 can be inserted through an opening 418 in the tubular member and then threaded through the lumen 417 of tubular member 430 .
- tail 410 is a hollow member having suture 415 threaded through its inner lumen 412 .
- FIG. 5 is a schematic of another stent 510 .
- the kidney end A of the stent has a pre-formed memory bend, to coil 512 as shown. Kidney end A is larger and more rectangular to help prevent upward as well as downward stent migration. End A may be closed or tapered to accommodate various insertion techniques.
- diameter, lumen size, perforations and materials are conventional.
- the lower end 514 of the tubular stent segment ends at B. The distance A–B could vary depending on the patient's anatomy.
- the stent is tapered (or at least smooth and constant in diameter).
- the portion of the upper segment 512 lying within the renal pelvis (e.g., from the kidney end of the stent to point A) is expanded so that it is larger in section, and it may even be oval or rectangular in cross-section, to help prevent upward as well as downward stent migration.
- the kidney end of the stent may be closed and/or tapered to accommodate the desired insertion technique.
- the upper portion 512 is made of a relatively stiff material (among the materials currently used in ureteral stents), and it should be designed to effectively restrict the motion of the stent to prevent proximal as well as distal migration of the catheter during normal physiological activity (required because the lower pre-formed portion is deleted).
- the length of the straight portion of the upper segment ( FIG.
- the upper segment will vary with patient size and anatomy.
- the upper segment extends more than halfway down the ureter when in proper position.
- the lowest end of the upper segment ( FIG. 5A point B) should be tapered or beveled to facilitate withdrawal. Otherwise, the upper segment is a typical stent in diameter, materials, and shape.
- the lower segment ( FIG. 5A point B to point C) consists of two or more (e.g., four) monofilament, plastic coated or silicone coated threads (shown in section in FIG. 5B ) which extend from the lumen or sidewall of the lower end of the upper segment ( FIG. 5A point B) along ureter 513 into the bladder.
- These threads are extremely flexible, and their diameter is selected to maintain a passage for urine flow and yet drastically reduce bladder and ureteral irritation. By avoiding distortion of the ureter wall, the threads may inhibit urinary reflux as well.
- the threads should be long enough to reach well into the bladder ( FIG. 5A point C), but not so long as to wash into the urethra with voiding.
- One thread 518 (or two or more threads in a loop) may be long enough to exit through the urethra ( FIG. 5A point B to point D) to permit ready removal by pulling (avoiding cystoendoscopy).
- These extended threads may also be used for stent exchange, in which a second catheter is exchanged for the catheter already in place. According to that procedure, these extended threads are captured with a snare that has been inserted through the central lumen of a second catheter. The snare is used to pull the threads through the lumen as the second catheter is advanced into the ureter. A guidewire is then inserted through the central lumen of the second catheter to the kidney (outside the first catheter's tubular body). The first stent can then be removed by pulling on the threads, leaving the guidewire in position for placement of a new stent using standard techniques.
- FIGS. 6A–6D are alternative cross sectional sketches (taken at the same location as FIG. 5B ) of some possible arrays of threads passing within the lower ureter 517 .
- Multiple threads 516 (2 and 4, respectively) are shown in FIGS. 6A and 6B .
- a substantially similar conduit could be achieved by fluted type cross sections in a single filament FIGS. 6C and 6D ).
- the shapes of FIGS. 6C and 6D could also be effective in reducing stiffness and hence irritability at the bladder end (i.e., lower segment), e.g., in a single filament design.
- Multiple threads may have the advantage of better surgical manipulability and superior comfort to the patient.
- FIGS. 7 and 7A deal with: a) proximal or upward stent migration of either the entire stent or individual threads in the lower segment independent of upper segment movement; b) bunching of one or more threads within the ureter so as to obstruct flow or cause ureteral injury or knotting at the time of removal; and c) in multi-thread embodiments, discomfort and/or reduced drainage through the ureter resulting from the use of threads of different lengths.
- a 6 F stent is depicted, which is generally a good size for adult urinary systems. It is large enough to provide good drainage and small enough to minimize local irritation and inflammation of the ureter.
- the upper segment need be only a single loop of conventional size because a change in the design of the lower segment (see later discussion and FIG. 8 ) should prevent proximal migration.
- the upper segment ( FIG. 7 point A to point C) is constructed of a relatively firm material because, during insertion, the pusher tubing should be removed after the guidewire is removed. This means that there will be some drag on the threads during removal of the pusher tubing which could dislodge the stent if the coil ( FIG. 7 point A to point B, about 2.5 cm) does not provide adequate resistance.
- the coil may be tapered or closed depending on the insertion technique desired (i.e., over a previously placed guidewire).
- FIG. 7 point B to point C can have an approximate length of 12 cm. This is long enough to prevent dislocation of the upper segment in a large renal pelvis and short enough to end well above the point where the ureter crosses the common iliac vessels. At the iliac vessels, the ureter takes a fairly sharp turn and the threads will more easily follow the natural curves at this point. This design should reduce the inflammation that is normally seen in this region when a conventional double-J stent is left indwelling on a chronic basis.
- the junction of the upper and lower segments at FIG. 7 point C is important. See FIG. 7A , which enlarges this junction.
- the threads are attached to the upper segment in a manner that achieves the following goals: 1) the threads are securely attached to the upper segment and to each other (at least for a short distance of about 0.8 mm) so that their orientation to themselves is maintained (to the maintenance of lower end asymmetry); 2) the threads do not obstruct the lumen of the upper segment and they allow for the easy passage of a standard guidewire (e.g., 0.035 guidewire); 3) the transition diameters in this region closely preserve the 6 F standard so that this point can pass in both directions smoothly throughout the instruments used for insertion and through the ureter; 4) there is no cause for a localized ureteral obstruction; and 5) there is an effective abutment for the pusher tubing.
- a standard guidewire e.g., 0.035 guidewire
- a good starting string diameter for a four string lower segment would be 0.020 inches.
- a simple monofilament nylon thread is an easy potential solution but may be too stiff.
- a more supple monofilament or woven thread with silicone or other coating may be required to achieve minimal irritability.
- the threads can be sufficiently resistant to compression so that tissue-generated pressures cannot collapse the interspaces of the threads. See FIG. 8B , showing cross-sections of threads (left) which retain interstitial space under some modest compression, and of threads (right) which are so soft that they compress into a plug with reduced interstitial space.
- These threads may have centimeter markings beginning at a point no more than 20 centimeters from point B ( FIG. 7 ) so that functional ureteral and total stent length may be noted.
- the portion of the lower segment that lies within the bladder when the stent is in proper anatomic position is important to both comfort and function.
- Proximal migration can be controlled by using asymmetrical lengths of the thread pairs, with one pair being 2 cm longer that the other pair, so that the fused junction 810 of these threads tends to intersect with the ureteral orifice 18 at an angle (e.g., ⁇ 90°) with the stiffened area 815 having a length of 6 mm (see detail FIG. 8A ).
- the thread pairs will extend beyond the ureteral orifice ( FIG. 7 point D) by 1 cm at the short limb 820 and 3 cm at the long limb 825 .
- this lower segment configuration allows for considerable tolerance in sizing (unlike unsecured independent threads which must be selected to have a length so as to avoid upward migration of the thread through the ureteral orifice 18 ) and a chosen length which is 1 cm shorter or 2–3 cm longer than the ideal length should be satisfactory.
- the threads should form a continuous loop 828 of 3.5 cm length to prevent free ends from poking the bladder wall or prolapsing through the urethra. Buoyant threads may add to patient comfort, because they will float away from the trigone region of the bladder, where most of the sensory nerve fibers are located.
- a typical small gauge filament extraction thread 830 may be attached to the longer limb 825 of the thread pairs, which is a suitable pulling point for removal.
- a small diameter pusher tubing of 4–4.5 F should be used to aid insertion.
- Soft Percuflex® material can be used for the lower segment and firm or regular Percuflex® can be used for the upper segment.
- the bladder end should be easily inserted using instruments, and it should prevent proximal migration of the stent.
- the design of FIG. 7 will avoid tangling and migration of the stent.
- soft Percuflex® material for example, has good resistance to extreme flexion at small radii (e.g., even 0.020′′ diameter) so that a simple continuous loop extending from the junction of the upper and lower segments (see FIG. 9 ) may be adequate to prevent upward migration.
- the design of FIG. 9 also has the advantage of relative ease of manufacture and relative ease of insertion, as well as ease and comfort of removal.
- FIG. 9 shows such an alternative embodiment having a simple coil at the kidney end.
- the lower end is constructed of looped stringlike elements with ends fused at the junction between the lower and the upper end. Therefore, there are even numbers of string elements, with no free ends.
- Circle E in FIG. 9 represents an idealized depiction of the ureteral opening into the bladder.
- the loops may be fused over a very short distance at the bladder end in order to prevent tangling of loops and to improve stent handling. Any conventional means of fusion may be used.
- organization of the loops can be maintained by pre-placing them inside the pusher tubing using a long monofilament nylon loop tail, similar to those used for the non-invasive removal stents (i.e. without sensor endoscopy).
- stent placement is achieved by advancing the tubular stent segment over a guidewire in the ureter.
- a pushing catheter passes the tubular segment into the kidney, while maintaining the tail in the bladder.
- Other methods such as a stiff sheath can be used to position the stent. Once in position, the sheath can be removed.
- a proximal region 106 comprising threads or filaments 111 as illustrated in FIG. 13 .
- the fine flexible filaments 111 can be connected proximally to form a loop 118 , or the loop can be formed from a continuous filament.
- the filaments have a small diameter, e.g., 3 French or less (i.e., less than about 0.040 inches in diameter). In one configuration individual filaments preferably have no internal lumen.
- the illustrated embodiment includes a distal region 102 that includes a tubular body 130 having openings 125 and defining a lumen 260 therein.
- the proximal region 106 can be integrally formed with distal region 102 .
- a distal portion of the distal region 102 includes a distal retention structure 104 , configured to maintain placement of the distal end of the stent within a renal pelvis 19 .
- an interstitial space 131 is defined between the filaments.
- the interstitial space 131 is in fluid communication with lumen 260 of the tubular body 130 .
- the interstitial space provides for drainage, e.g., of urine, from the kidney (e.g., the renal pelvis 19 ) through the lumen 260 of the tubular body 130 and into the bladder 20 of a patient's body. Such drainage can occur in the space between the filaments 111 and/or along surfaces of the filaments.
- FIG. 14 depicts an embodiment of a ureteral stent having a proximal region 106 that includes a plurality of loops.
- the proximal portion 137 of the proximal region 106 includes loops 118 formed from one continuous filament, or, alternatively, the loops 118 can be formed from at least a portion of a plurality of filaments 111 .
- the proximal region includes two loops 118 formed from two continuous filaments 111 .
- the proximal region includes two loops 118 formed from a portion of four filaments. Each loop is formed of at least two filaments, preferably by joining the proximal ends of two filaments together.
- a pliable portion 135 is disposed adjacent to the proximal portion 137 , and can comprise a soft portion of tube compressible by pressure (e.g., body pressure).
- the filaments 111 are configured to minimize any sharp exterior edges at the interface between the filaments and the pliable portion 135 .
- the lumen 260 of the tubular body 130 extends through to the pliable portion 135 , as illustrated.
- the proximal region 106 also includes a distal portion 133 comprising a junction 134 between the pliable portion 135 and the distal region 102 .
- the pliable portion can be a distinct section of tube incorporated into the stent, or the pliable portion can be a section of the stent that is integral with the distal region. Preferably, the pliable portion is softer than distal portions of the stent along the distal region.
- Interstitial space 131 is in fluid communication with lumen 260 , and provides for flow between the kidney and the bladder 20 .
- the pliable portion 135 is compressible upon exertion of a pressure by the body, such as a pressure exerted by the ureteral orifice 18 .
- the stent is positioned within the body such that the pliable portion 135 is located at or near the ureteral orifice 18 .
- the pliable portion 135 extends distally into the ureter for a distance of approximately 2–3 centimeters (e.g., FIG. 16B ).
- the pliable portion 135 of this embodiment can extend through the ureteral orifice 18 and into the bladder (e.g., FIG. 16A ).
- the overall loop length can be 3–6 centimeters with no portion of the loop residing in the proximal 2–3 cm of the ureter.
- This proximal portion of the ureter is believed to be highly innervated. Contact of this portion of the ureter with the softer material of the pliable portion provides increased comfort to the patient.
- Constriction of the ureteral orifice by the patient can exert a pressure on the pliable portion 135 resulting in constriction of the pliable portion, thereby reducing or eliminating the flow area available in the portion of the lumen 260 disposed within the pliable portion.
- This reduction in flow area reduces or eliminates painful urine reflux that can be experienced by the patient. In this way, the pliable portion can collapse sufficiently to inhibit urine reflux. When the body pressure is removed, the pliable portion reopens.
- the overall length of the loops 118 in FIGS. 14 and 14A can be about 4–6 centimeters.
- a loop with a length of 5 centimeters can be formed from a single filament 111 having a length of about 10 centimeters, or from two filaments 111 each having a length of about 5 centimeters.
- the loop 118 is designed to be sufficiently long to remain in the bladder 20 when the distal retention structure 104 is positioned within the kidney.
- the length of the filaments should be short enough to substantially reduce contact of the loop with the urethra 123 . As stated previously, contact with the urethral opening can cause patient discomfort.
- any portion of the proximal region 106 with the trigone can cause patient discomfort. Such contact should be minimized or eliminated. Embodiments of the invention accomplish this by providing no significant retention force for the stent within the bladder 20 . That is, the filaments have a retention force insufficient to maintain the stent within the bladder.
- the flexible filaments are designed to free float within the bladder, making little or no contact with the trigone. Such contact is also minimized by having no stiffened or rigid areas within or about the filaments, and by minimizing their diameter, volume, surface area, and mass.
- the distal region of the stent can have a hardness of about 110 Shore A, the proximal region is generally much softer, having a Durometer hardness of approximately 60–80 Shore A.
- the hardness of the stent is gradually decreased from a distal location, e.g., 141 , of the distal region to a proximal location, e.g., 142 , of the proximal region.
- the proximal region is integrally formed with the distal region in such embodiments.
- the lower hardness limit (i.e., the softness limit) of the filaments can be determined by the tensile strength required to withdraw the stent from the body. More specifically, extubation of the stent from the body can be achieved by grasping the filaments and pulling the stent out of the body via the urethra. This is most efficiently achieved in embodiments having filaments that are formed into loops, since an instrument can more readily grasp a loop than a single filament.
- the tensile strength of the filaments should be sufficient to prevent breakage of the filaments as the stent is being withdrawn from the body. If extubation is not a concern, filaments of reduced tensile strength, and hence of smaller diameter, can be used with the invention.
- the pliable portion 135 comprises a distal end 138 of the plurality of filaments 111 , as illustrated in FIG. 15 .
- the proximal region 106 includes a plurality of loops. Specifically, the proximal region 106 includes two loops 118 each formed from one continuous filament. Alternatively, the two loops 118 can be formed from a portion of four filaments 111 ; each loop can be formed from two filaments by joining them filaments together.
- a pliable portion 135 is formed from a portion of the flexible filaments 111 and is disposed adjacent to the proximal portion 137 .
- the filaments 111 are configured to minimize any sharp exterior edges at the interface between the filaments and the junction of the distal portion 133 , thus minimizing any potential irritation to the intramural ureter.
- the filaments 111 of the proximal portion 137 define an interstitial space 131 .
- the lumen 260 of the tubular body 130 continues through to the pliable portion 135 , as illustrated.
- the interstitial space 131 is in fluid communication with lumen 260 , and provides for flow between the kidney and the bladder 20 .
- the filaments of the pliable portion 135 are compressible upon exertion of a pressure by the body, such as a pressure exerted by the ureteral orifice 18 .
- the stent is positioned within the body such that the filaments of the pliable portion 135 pass through the ureteral orifice 18 and extend distally into the ureter for a distance of approximately 2–3 centimeters. Because the proximal portion of the ureter is believed to be highly innervated, contact of this portion of the ureter with the softer material of the flexible filaments provides increased comfort to the patient.
- Constriction of the ureteral orifice by the patient can exert a pressure on the filaments of the pliable portion 135 resulting in constriction, thereby reducing or eliminating the flow area through and about the interstitial space 131 of the proximal region 106 at the ureteral orifice 18 .
- This reduction in flow area reduces or eliminates painful urine reflux that can be experienced by the patient upon voiding.
- the filaments of the pliable portion can be collapsed sufficiently to inhibit urine reflux.
- FIG. 15B depicts a cross-sectional view taken at section B—B in FIG. 15 . In this uncompressed state the flow area presented in interstitial space 131 is large.
- the flow area can be reduced as illustrated in FIG. 15C , representing a section taken at C—C of FIG. 15A .
- ureteral orifice 18 is contracted and the filaments 111 have been pressed closer to each other.
- the filaments can be compressed to the point where some or all of them contact each other, as shown in FIGS. 15 C′ and 15 C′′, further reducing or even eliminating the interstitial space 131 .
- the amount of interstitial space 131 remaining upon compression of the filaments can in part be determined by the physical properties of the filaments. In some embodiments, only partial compression of the interstitial space formed between the filaments 111 is achieved (e.g., FIG. 15C ). In other embodiments, virtually all of the central interstitial space at a certain point along the length of the filaments can be eliminated by body pressure. In embodiments including filaments of an even softer material, flow area about the periphery of the filaments can also be eliminated or reduced (not shown). In many of these embodiments, urine flow through the ureteral orifice 18 can be virtually eliminated.
- the filaments 111 upon the exertion of adequate force the filaments 111 not only contact each other, but if soft enough, they can be deformed by the pressure to further reduce any flow area.
- the ureteral stent of the invention thus allows urine flow reduction, including the reduction or elimination of urine reflux, to be achieved while minimizing irritation to the patient.
- the pressure from the ureteral orifice is released, the filaments separate from each other thereby recreating the interstitial space.
- the overall length of the loops 118 in FIGS. 15 and 15A can be about 7–9 centimeters. Similar to the discussion above, a loop 118 with a length of 8 centimeters can be formed from a single filament 111 having a length of about 8 centimeters, or from two filaments 111 each having a length of about 8 centimeters.
- the loop 118 is designed to be sufficiently long to remain in the bladder 20 when the distal retention structure 104 is positioned within the kidney.
- the length should be sufficiently short to substantially reduce contact of the loop with the urethra 123 , since contact with the urethra can cause patient discomfort.
- the length of the loop can be established to maintain at least a portion of the loop within the bladder after intubation, including upon routine movement of the kidney and the bladder. For this embodiment, a loop length of approximately 8 centimeters can be effective for this purpose.
- Embodiments of the invention accomplish this by providing no significant retention force for the stent within the bladder 20 . That is, the filaments 111 have a retention force insufficient to maintain the stent within the bladder.
- the flexible filaments are designed to free float within the bladder, making little or no contact with the trigone. Such contact is also minimized by having no stiffened or rigid areas within or about the filaments, and by minimizing their diameter, volume, surface area, and mass.
- the proximal region of the stent can have a hardness of about 80–110 Shore A
- the proximal region is generally much softer, having a Durometer hardness of approximately 60–80 Shore A.
- the hardness of the stent is gradually decreased from a distal location, e.g., 141 , of the distal region to a proximal location, e.g., 142 , of the proximal region.
- the proximal region is integrally formed with the distal region in such embodiments.
- the lower hardness limit (i.e., the softness limit) of the filaments 111 can be determined by the tensile strength required to withdraw the stent from the body. More specifically, extubation of the stent from the body can be achieved by grasping the filaments and pulling the stent out of the body via the urethra. This is most efficiently achieved in embodiments having filaments that are formed into loops, since an instrument can more readily grasp a loop than a single filament.
- the tensile strength of the filaments should be sufficient to prevent breakage of the filaments as the stent is being withdrawn from the body. If extubation is not a concern, filaments of reduced tensile strength, and hence of smaller diameter, can be used with the invention. Patient discomfort can thus be further reduced.
- FIG. 16A illustrates placement of an embodiment of the invention within the body of a patient, in which the stent comprises two loops with a length of approximately 5 centimeters and a pliable portion including a soft portion or segment of tube compressible by body pressure.
- the distal retention structure 104 of the distal region 102 is located in the renal pelvis 19 .
- the portion of the pliable portion 135 comprising the soft tube is encompassed by the ureteral orifice 18 , and filaments of the proximal portion are disposed within the bladder 20 .
- Loops 118 freely float within the bladder and have a length sufficient to maintain at least a portion of the filaments 111 within the bladder, including upon routine movement of the kidney and the bladder.
- the length of loops 118 is insufficient to contact the opening of the urethra 123 .
- FIG. 16B illustrates placement of an embodiment of the invention.
- the stent includes two loops (having a length, for example, of 8 centimeters) and a pliable portion including a portion of the flexible filaments compressible by body pressure.
- the distal retention structure 104 of the distal region 102 is located in the renal pelvis 19 .
- the portion of the pliable portion 135 comprising the distal ends 138 of the flexible filaments 111 is encompassed by the ureteral orifice 18 .
- Loops 118 freely float within the bladder and have a length sufficient to maintain at least a portion of the filaments 111 within the bladder, including upon routine movement of the kidney and the bladder.
- the length of loops 118 is insufficient to cross the bladder neck of the prostatic urethra 123 .
- Construction of the stent 100 can include bonding a component that includes the proximal region 106 , the distal region 102 , and/or the filaments 111 .
- the filaments 111 of the proximal region can be joined with the pliable portion 135 or with the distal region 102 via the junction 134 at the distal portion 133 (e.g., FIGS. 14 and 15 ).
- Bonding of these components can be performed using heat-bonding techniques, such as by RF processes known in the art.
- Heat bonding functions by partially melting the plastic of a structure, allowing the melted plastic to adhere to a contacting surface or component, and allowing the plastic to cool and harden and thus form a bond.
- Heat bonding methods that include radio frequency bonding, induction heating and conduction heating may be used.
- the plastic of a first component may be selected to melt at a similar temperature as a second component so that both components are melted during the heat bonding process.
- either the first or second component may be constructed from plastic with a lower melting temperature than the other component in order that only the component with the lower melting temperature may melt during the bonding process.
- These techniques can also be used to form loops 118 by joining the proximal ends of two filaments 111 .
- these techniques can be used to join the filaments with the pliable portion, the distal portion, the junction, or the tubular body.
- the components may be bonded by the use of a bonding solvent, such as cyclohexanone and methylethylketone, for example.
- the bonding solvent acts by dissolving and swelling the plastic of the components. As the plastic of the components dissolve and swell, the components adhere to each other. The solvent is then removed allowing for the dissolved and swollen plastic to harden and thus complete the bonding process.
- These techniques can also be used to form loops 118 by joining the proximal ends of two filaments 111 .
- Embodiments can be fabricated from many different materials.
- Polymers and copolymers can be used and formed during the fabrication process, from materials such as polyurethane, polyamides, various thermoplastic elastomers, silicone, and various ethylene copolymers and block copolymers (e.g., ethyl vinyl acetate (EVA)).
- EVA ethyl vinyl acetate
- Other materials include biocompatible plastics, e.g., polyester, nylon based biocompatible polymers, polytetrafluoroethylene polymers, silicone polymers, polyurethane polymers, polyethylene polymers, and thermoplastic polymers. Combinations of these materials can be extruded or coextruded during the fabrication process.
- Portions of the stent can be made of materials with different Durometer hardness values, or the stent can be made such that the Durometer hardness value increases or decreases gradually from one location along the stent to another.
- the entire stent can be formed of a very soft material such that the entire stent is formed from a material having a hardness of, for example, 60 Shore A.
- the tubular portion of the stent may be manufactured by extruding a tube according to known techniques.
- the elongated tail (e.g., FIGS. 1–4 ) may be separately manufactured by conventional techniques and attached to the tubular portion, e.g., using biocompatible adhesive materials or heat.
- the stent may be made by injection molding the tube and the tail as a single piece, using a pin to create hollow segments.
- the stent may be manufactured from any of a number of biocompatible polymers commonly used inside the body, including polyurethane and polyethylene.
- the entire stent may be solid, so that urine is conveyed entirely on an external stent surface.
- Another fabrication method includes forming, for example, four or twelve strands material into a tube.
- the strands can then be separated at the proximal end of the tube to form free-floating filaments for the proximal region.
- Loops can be formed from filaments by joining the proximal ends of two filaments with each other (although some embodiments include loops formed from one continuous filament). The joining can be performed using thermal and/or adhesive techniques.
- the filaments can be joined with each other by positioning the materials in a mold and heating them together. These techniques can be used to join filament ends together, and to join filaments with the tube.
- a mandrel When fabrication techniques are used to join filaments to the tube, a mandrel can be inserted into the luminal portion of the device to maintain the luminal and/or interstitial space during heating.
- a shaft size of 6 French can be used.
- a mold used with such a shaft should have a diameter that is 0.003–0.004 inches larger than the shaft diameter, to allow for insertion of the shaft, and to provide for molding of the filaments to the tube.
- the distal retention structure 104 can conveniently be formed from the tube.
- the stent can be coated with a lubricious hydrophilic coating.
- a lubricious hydrophilic coating can be applied to the tubular body and/or the proximal region, to reduce the irritation levels attained through contact with the surrounding tissue/mucosa in the bladder. Care should be taken to ensure compatibility of the coating with any polymeric materials used.
- Methods such as these can be used to produce embodiments with consistent and smooth exterior surfaces and outer diameters, for example, with diameters of 4–10 French.
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Abstract
Description
Claims (24)
Priority Applications (4)
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US10/406,876 US6991614B2 (en) | 1995-11-07 | 2003-04-04 | Ureteral stent for improved patient comfort |
US11/327,409 US7678154B2 (en) | 1995-11-07 | 2006-01-09 | Ureteral stent for improved patient comfort |
US12/698,487 US8246689B2 (en) | 1995-11-07 | 2010-02-02 | Ureteral stent for improved patient comfort |
US13/559,224 US8845752B2 (en) | 1995-11-07 | 2012-07-26 | Ureteral stent for improved patient comfort |
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US08/743,885 US6849069B1 (en) | 1995-11-07 | 1996-11-06 | Medical device with tail(s) for assisting flow of urine |
US09/300,657 US6656146B1 (en) | 1995-11-07 | 1999-04-27 | Medical device with tail(s) |
US09/849,202 US6676623B2 (en) | 2001-05-04 | 2001-05-04 | Drainage devices and methods |
US10/406,876 US6991614B2 (en) | 1995-11-07 | 2003-04-04 | Ureteral stent for improved patient comfort |
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US12/698,487 Expired - Fee Related US8246689B2 (en) | 1995-11-07 | 2010-02-02 | Ureteral stent for improved patient comfort |
US13/559,224 Expired - Fee Related US8845752B2 (en) | 1995-11-07 | 2012-07-26 | Ureteral stent for improved patient comfort |
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US12/698,487 Expired - Fee Related US8246689B2 (en) | 1995-11-07 | 2010-02-02 | Ureteral stent for improved patient comfort |
US13/559,224 Expired - Fee Related US8845752B2 (en) | 1995-11-07 | 2012-07-26 | Ureteral stent for improved patient comfort |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060122707A1 (en) * | 1995-11-07 | 2006-06-08 | Mcweeney John O | Ureteral stent for improved patient comfort |
US20090054874A1 (en) * | 2007-08-23 | 2009-02-26 | C. R. Bard, Inc. | Multi-lumen catheter including a lumen having a variable cross sectional area |
US20090143849A1 (en) * | 2007-12-03 | 2009-06-04 | Olympus Medical Systems Corp. | Stent delivery system, stent placement method, and stent attachment method |
US20100082016A1 (en) * | 2008-09-30 | 2010-04-01 | Tyco Healthcare Group Lp | Ball-Valve Actuation Mechanism |
US20100152861A1 (en) * | 2008-12-12 | 2010-06-17 | Chung Steven Y | Ureteral Stent |
US20100160848A1 (en) * | 2008-12-22 | 2010-06-24 | Isaac Ostrovsky | Ureteral Stent |
DE202012011024U1 (en) | 2012-11-16 | 2013-03-04 | Urotech Medizinische Technologie Gmbh | Ureteral stent |
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US9956100B2 (en) | 2009-09-15 | 2018-05-01 | Brightwater Medical, Inc. | Systems and methods for coupling and decoupling a catheter |
US10278806B2 (en) | 2017-02-27 | 2019-05-07 | Baylor University | Ureteral stent and method |
US10722391B2 (en) | 2014-08-12 | 2020-07-28 | Merit Medical Systems, Inc. | Systems and methods for coupling and decoupling a catheter |
US11039914B2 (en) | 2018-10-22 | 2021-06-22 | Sevro Technologies Llc | Variable length stent |
US12226327B2 (en) | 2020-04-15 | 2025-02-18 | Merit Medical Systems, Inc. | Systems and methods for coupling and decoupling a catheter |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6709465B2 (en) | 1999-03-18 | 2004-03-23 | Fossa Medical, Inc. | Radially expanding ureteral device |
US6929664B2 (en) * | 2003-12-05 | 2005-08-16 | Fossa Medical, Inc. | Open lumen stents |
GB2413769B (en) * | 2004-04-06 | 2007-02-21 | Medevert Ltd | Ureteric stents |
US7507218B2 (en) | 2004-04-26 | 2009-03-24 | Gyrus Acmi, Inc. | Stent with flexible elements |
US20050240141A1 (en) * | 2004-04-26 | 2005-10-27 | Peter Aliski | Stent kidney curl improvements |
US8828091B2 (en) * | 2006-03-23 | 2014-09-09 | Boston Scientific Scimed, Inc. | Movable stent reinforcement |
US8764847B2 (en) * | 2008-09-16 | 2014-07-01 | C. R. Bard, Inc. | Stent |
US8758326B2 (en) | 2011-06-03 | 2014-06-24 | Cook Medical Technologies Llc | Embedded wire extrusion with continuous loop tip |
US8810789B2 (en) | 2011-11-07 | 2014-08-19 | University Of Georgia Research Foundation, Inc. | Thin layer chromatography-surfaced enhanced Raman spectroscopy chips and methods of use |
KR102246491B1 (en) | 2012-05-19 | 2021-04-29 | 타리스 바이오메디컬 엘엘씨 | Implantable urological device with improved retrieval feature |
WO2013185128A1 (en) * | 2012-06-08 | 2013-12-12 | University Hospitals Health System, Inc. | Ureteral stent for placement in a kidney and bladder |
FR2999416A1 (en) * | 2012-12-19 | 2014-06-20 | Benoit Vogt | IMPROVED ENDO-URETERAL PROBE |
ES2472122B1 (en) * | 2012-12-27 | 2015-04-13 | Fundación Centro De Cirugía Mínima Invasión Jesús Usón | Self-retentive and anti-reflux ureteral catheter |
WO2014120587A1 (en) | 2013-01-30 | 2014-08-07 | Boston Scientific Scimed, Inc. | Ureteral stent with drug-releasing structure |
WO2014160201A2 (en) | 2013-03-14 | 2014-10-02 | The General Hospital Corporation | System and method for guided removal from an in vivo subject |
US10398541B2 (en) | 2013-03-14 | 2019-09-03 | The General Hospital Corporation | System and method for use of flexible anti-reflux ureteral stent |
US10406276B2 (en) | 2013-03-14 | 2019-09-10 | The General Hospital Corporation | System and method for guided removal from an in vivo subject |
US9242079B2 (en) | 2013-11-12 | 2016-01-26 | Gyrus Acmi, Inc. | Ureteral stents with waveform interlayers and interstitching |
BR112016015419B1 (en) * | 2013-12-30 | 2022-02-08 | Medi-Tate Ltd | INCISION IMPLANT FOR THE CREATION OF INCISIONS IN THE PROSTATIC URETHRA OF A SUBJECT |
AU2015243533A1 (en) | 2014-04-10 | 2016-10-27 | C.R. Bard, Inc. | Ureteral stents |
CN110711306B (en) * | 2014-04-11 | 2022-02-22 | 科洛普拉斯特公司 | Ureter bracket |
US20170119559A1 (en) * | 2014-04-11 | 2017-05-04 | Coloplast A/S | A Ureteral Stent |
EP2977075B1 (en) * | 2014-07-23 | 2019-06-12 | Coloplast A/S | A Ureteral Stent |
BR102015011376B1 (en) * | 2015-05-18 | 2023-04-04 | Murilo Pundek Rocha | IMPLANTABLE ARTIFICIAL BRONCHI |
WO2017127700A1 (en) * | 2016-01-20 | 2017-07-27 | Boston Scientific Scimed, Inc., | Medical device with adjustable length |
WO2017192145A1 (en) * | 2016-05-06 | 2017-11-09 | University Hospitals Health Systems, Inc. | Ureteral stent |
US10881842B2 (en) * | 2017-07-28 | 2021-01-05 | Gyrus Acmi, Inc. | Ureteral stent |
US20210121188A1 (en) | 2018-02-02 | 2021-04-29 | Calyxo, Inc. | Devices and methods for minimally invasive kidney stone removal by combined aspiration and irrigation |
US11318289B2 (en) * | 2018-03-30 | 2022-05-03 | Gyrus Acmi, Inc. | Ureteral stent |
CN109745612B (en) * | 2019-03-21 | 2024-06-07 | 上海英诺伟医疗器械股份有限公司 | Prevent against current ureteral stent |
CN212282496U (en) * | 2020-03-11 | 2021-01-05 | 郭振宇 | ureteral stent |
US20240197510A1 (en) * | 2021-04-26 | 2024-06-20 | Mdha Investment Pty Ltd | Techniques and instrumentation for the removal of retained ureteral stents |
US20240108412A1 (en) | 2022-09-29 | 2024-04-04 | Calyxo, Inc. | Tool guiding device for kidney stone treatment apparatus |
Citations (354)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US191775A (en) | 1877-06-12 | Improvement in syringes | ||
US256590A (en) | 1882-04-18 | Double catheter | ||
US386603A (en) | 1888-07-24 | Stomach-pump | ||
US559620A (en) | 1896-05-05 | Joseph shearer | ||
US1211928A (en) | 1916-03-25 | 1917-01-09 | Arthur R Fisher | Colon-irrigator. |
US2257369A (en) | 1939-10-21 | 1941-09-30 | Thomas A Davis | Catheter and drainage tube |
FR1285953A (en) | 1961-01-16 | 1962-03-02 | Eynard & Cie J | Improvements to surgical tubular probes |
US3087493A (en) | 1960-04-27 | 1963-04-30 | George W Schossow | Endotracheal tube |
US3314430A (en) | 1964-04-10 | 1967-04-18 | Brunswick Corp | Sump drain catheter |
US3359974A (en) | 1963-10-07 | 1967-12-26 | Hassan H Khalil | Device for the thermal determination of cardiac volumetric performance |
FR1508959A (en) | 1966-01-21 | 1968-01-12 | A catheter intended to allow the disobstruction of thrombosed vessels of sinuous configuration | |
US3394705A (en) | 1965-10-22 | 1968-07-30 | Daniel J. Abramson | Drainage balloon catheter having means for antiseptic treatment of the urethra |
US3437088A (en) | 1966-12-01 | 1969-04-08 | Leonard J Bielinski | Apparatus for measuring motility of body organs |
US3485234A (en) | 1966-04-13 | 1969-12-23 | Cordis Corp | Tubular products and method of making same |
US3593713A (en) | 1968-07-12 | 1971-07-20 | Stanley A Bogoff | Catheter combination |
US3612050A (en) | 1969-04-01 | 1971-10-12 | David S Sheridan | Intravascular catheters |
US3633579A (en) | 1967-05-24 | 1972-01-11 | Sherwood Medical Ind Inc | Catheter placement device and method |
US3726281A (en) | 1971-12-08 | 1973-04-10 | Bard Inc C R | Self-lubricating catheter |
US3746003A (en) | 1970-04-20 | 1973-07-17 | American Hospital Supply Corp | Multi-lumen balloon catheter |
US3788326A (en) | 1970-07-29 | 1974-01-29 | H Jacobs | Distally perforated catheter for use in ventilating system |
DE2259865A1 (en) | 1972-12-07 | 1974-06-12 | Josef Magasi | PUNCTURE CANNULA |
US3828767A (en) | 1973-10-29 | 1974-08-13 | Fenton J | Angiographic and arteriographic catherters |
US3902492A (en) | 1973-05-14 | 1975-09-02 | Roger Malcolm Greenhalgh | Catheter |
US3906954A (en) | 1973-09-14 | 1975-09-23 | Nasa | Ophthalmic liquifaction pump |
US3920023A (en) | 1974-03-21 | 1975-11-18 | Kendall & Co | Method and apparatus for placement of a suprapubic catheter |
FR2297640A1 (en) | 1975-01-15 | 1976-08-13 | Rhone Poulenc Ind | Catheter for simultaneous blood withdrawal and reinjection - for treatment e.g. with oxygen outside the body using only one incision |
US3995623A (en) | 1974-12-23 | 1976-12-07 | American Hospital Supply Corporation | Multipurpose flow-directed catheter |
US4004588A (en) | 1975-05-21 | 1977-01-25 | Wrightson Nma Limited | Apparatus for flushing ova from cows or mares |
US4037599A (en) | 1976-01-26 | 1977-07-26 | Raulerson James D | Continuous flow catheter device |
US4065264A (en) | 1976-05-10 | 1977-12-27 | Shiley Laboratories, Inc. | Blood oxygenator with integral heat exchanger for regulating the temperature of blood in an extracorporeal circuit |
US4069814A (en) | 1976-05-06 | 1978-01-24 | Miles Laboratories, Inc. | Double lumen cannula apparatus |
US4096860A (en) | 1975-10-08 | 1978-06-27 | Mclaughlin William F | Dual flow encatheter |
US4099528A (en) | 1977-02-17 | 1978-07-11 | Sorenson Research Co., Inc. | Double lumen cannula |
US4100246A (en) | 1976-06-21 | 1978-07-11 | Dow Corning Corporation | Method of forming a gastrointestinal tube |
US4129129A (en) | 1977-03-18 | 1978-12-12 | Sarns, Inc. | Venous return catheter and a method of using the same |
US4134402A (en) | 1976-02-11 | 1979-01-16 | Mahurkar Sakharam D | Double lumen hemodialysis catheter |
US4138457A (en) | 1976-08-13 | 1979-02-06 | Sherwood Medical Industries Inc. | Method of making a plastic tube with plural lumens |
US4138288A (en) | 1976-05-10 | 1979-02-06 | Shiley Scientific Incorporated | Method and apparatus for oxygenating and regulating the temperature of blood |
US4144884A (en) | 1976-03-29 | 1979-03-20 | Tersteegen Bernd J W | Double lumen catheter |
US4149535A (en) | 1976-05-06 | 1979-04-17 | Gist-Brocades N.V. | Catheter holding device |
US4168703A (en) | 1977-07-18 | 1979-09-25 | Kenneth Kenigsberg | Gastroesophageal reflux diagnostic tool |
GB2017499A (en) | 1978-03-28 | 1979-10-10 | Fresenius Chem Pharm Ind | Double-passage catheter |
US4173981A (en) | 1977-05-23 | 1979-11-13 | University Of Utah | Cannula for arterial and venous bypass cannulation |
US4180068A (en) | 1978-04-13 | 1979-12-25 | Motion Control, Incorporated | Bi-directional flow catheter with retractable trocar/valve structure |
US4182739A (en) | 1976-02-03 | 1980-01-08 | Shiley Incorporated | Blood oxygenator |
US4183961A (en) | 1976-02-03 | 1980-01-15 | Shiley Incorporated | Method of oxygenating blood |
US4202332A (en) | 1977-01-26 | 1980-05-13 | Bernd Tersteegen | Double lumen catheter |
US4203436A (en) | 1977-04-05 | 1980-05-20 | Lars Grimsrud | Assembly for dividing a hollow hypodermic needle into two separated flow conduits |
US4204541A (en) | 1977-01-24 | 1980-05-27 | Kapitanov Nikolai N | Surgical instrument for stitching up soft tissues with lengths of spiked suture material |
US4212304A (en) | 1978-04-07 | 1980-07-15 | Medical Engineering Corp. | Uretheral catheter stent |
US4217895A (en) | 1977-06-03 | 1980-08-19 | Terumo Corporation | Intravascular catheter |
US4223676A (en) | 1977-12-19 | 1980-09-23 | Cavitron Corporation | Ultrasonic aspirator |
US4236520A (en) | 1978-12-04 | 1980-12-02 | Anderson Mark L | Fluid drain or injection tube for an animal's udder |
US4239042A (en) | 1979-04-05 | 1980-12-16 | Dow Corning K.K. | Catheter placement system |
CA1092927A (en) | 1979-12-28 | 1981-01-06 | Allentyne Limited | Hemodialysis cannula for subclavian insertion |
US4243040A (en) | 1979-09-17 | 1981-01-06 | Beecher William H | Extracting device for removing objects from human body passages |
US4257416A (en) | 1979-05-03 | 1981-03-24 | David Prager | Multi-channel venipuncture infusion set |
US4270535A (en) | 1979-10-18 | 1981-06-02 | Hospal Medical Corp. | Double lumen catheters |
EP0036642A2 (en) | 1980-03-21 | 1981-09-30 | Uthmann, Ulrich, Dr.-med. | Catheter |
US4307723A (en) | 1978-04-07 | 1981-12-29 | Medical Engineering Corporation | Externally grooved ureteral stent |
US4327722A (en) | 1979-08-20 | 1982-05-04 | Groshong Leroy E | Methods and apparatus for intravenous therapy and hyperalimentation |
JPS5790150A (en) | 1980-11-27 | 1982-06-04 | Toshiba Corp | Evaluating device for film quality of metal film for semiconductor device |
US4334327A (en) | 1979-12-21 | 1982-06-15 | University Of Utah | Ureteral prosthesis |
EP0079719A1 (en) | 1981-11-06 | 1983-05-25 | Shiley Incorporated | Dual lumen subclavian cannula |
CA1150122A (en) | 1980-04-16 | 1983-07-19 | Geoffrey S. Martin | Double-lumen cannula |
US4405313A (en) | 1982-01-29 | 1983-09-20 | Sisley James R | Figure-eight, dual-lumen catheter and method of using |
US4405314A (en) | 1982-04-19 | 1983-09-20 | Cook Incorporated | Apparatus and method for catheterization permitting use of a smaller gage needle |
US4406656A (en) | 1981-06-01 | 1983-09-27 | Brack Gillium Hattler | Venous catheter having collapsible multi-lumens |
US4413989A (en) | 1980-09-08 | 1983-11-08 | Angiomedics Corporation | Expandable occlusion apparatus |
US4419094A (en) | 1981-06-08 | 1983-12-06 | The Kendall Company | Suprapubic catheter system |
WO1984000403A1 (en) | 1982-07-13 | 1984-02-02 | Karl Sauder | Axial piston pump |
FR2530958A1 (en) | 1982-07-29 | 1984-02-03 | Lacour Gayet Francois | Cylindrical catheter with one or several channels |
USD272651S (en) | 1981-11-02 | 1984-02-14 | Mahurkar Sakharam D | Double lumen catheter |
EP0101890A1 (en) | 1982-07-30 | 1984-03-07 | Karl Dr. Aigner | Double lumen catheter for a device for in-vivo cleansing of the blood |
US4443333A (en) | 1981-09-24 | 1984-04-17 | Mahurkar Sakharam D | Portable dialysis system and pump therefor |
CA1167727A (en) | 1981-07-24 | 1984-05-22 | Geoffrey S. Martin | Cannula |
US4456000A (en) | 1981-08-17 | 1984-06-26 | Angiomedics Corporation | Expandable occlusion apparatus |
US4484585A (en) | 1981-09-12 | 1984-11-27 | Richard Wolf Gmbh | Catheters |
US4504264A (en) | 1982-09-24 | 1985-03-12 | Kelman Charles D | Apparatus for and method of removal of material using ultrasonic vibraton |
USRE31873E (en) | 1976-09-08 | 1985-04-30 | Venous catheter device | |
EP0144525A2 (en) | 1983-10-27 | 1985-06-19 | Intermedicat Gmbh | Catheter socket |
US4531933A (en) * | 1982-12-07 | 1985-07-30 | C. R. Bard, Inc. | Helical ureteral stent |
US4540402A (en) | 1982-04-20 | 1985-09-10 | Karl Aigner | Double perfusion catheter |
CA1193508A (en) | 1984-08-15 | 1985-09-17 | Sakharam D. Mahurkar | Smooth bore double lumen catheter |
US4543087A (en) | 1983-11-14 | 1985-09-24 | Quinton Instrument Company | Double lumen catheter tip |
US4559046A (en) | 1979-08-20 | 1985-12-17 | Catheter Technology Corporation | Apparatus for intravenous therapy and hyperalimentation |
EP0168136A1 (en) | 1984-05-15 | 1986-01-15 | Shiley Incorporated | Dual lumen subclavian cannula |
US4568338A (en) | 1983-09-22 | 1986-02-04 | C. R. Bard, Inc. | Preformed catheter |
US4568329A (en) | 1982-03-08 | 1986-02-04 | Mahurkar Sakharam D | Double lumen catheter |
US4581012A (en) | 1984-12-05 | 1986-04-08 | I-Flow Corporation | Multilumen catheter set |
US4583968A (en) | 1983-10-03 | 1986-04-22 | Mahurkar Sakharam D | Smooth bore double lumen catheter |
EP0183421A2 (en) | 1984-11-15 | 1986-06-04 | Shiley Inc. | Multi-procedural embolectomy catheter |
US4596548A (en) | 1985-03-25 | 1986-06-24 | Dlp Inc. | Single stage venous catheter |
US4601697A (en) | 1982-10-29 | 1986-07-22 | Miles Laboratories, Inc. | Long indwelling double bore catheter |
US4601701A (en) | 1985-02-25 | 1986-07-22 | Argon Medical Corp. | Multi-purpose multi-lumen catheter |
US4608993A (en) | 1984-07-31 | 1986-09-02 | Quinton Instrument Company | Blood flow measurement device and method |
US4610657A (en) | 1984-01-03 | 1986-09-09 | Medical Engineering Corporation | Ureteral stent |
US4619643A (en) | 1983-07-25 | 1986-10-28 | Bai Chao Liang | Catheter |
US4623327A (en) | 1985-02-12 | 1986-11-18 | Mahurkar Sakharam D | Method and apparatus for using dual-lumen catheters for extracorporeal treatment |
DE3517813A1 (en) * | 1985-05-17 | 1986-11-20 | Jörg-Günter Dr.med. 3100 Celle Wiedeck | Ureteral stent for transurethral placement |
US4626240A (en) | 1981-11-06 | 1986-12-02 | Shiley Incorporated | Dual lumen subclavian cannula |
US4641652A (en) | 1984-04-12 | 1987-02-10 | Richard Wolf Gmbh | Applicator for tying sewing threads |
US4643716A (en) | 1984-09-26 | 1987-02-17 | The Kendall Company | Multi-size ureteral stent |
US4643711A (en) | 1984-05-25 | 1987-02-17 | Cook, Inc. | Two lumen hemodialysis catheter |
US4648865A (en) | 1984-01-12 | 1987-03-10 | Karl Aigner | Device for in vivo purification of blood |
CA1219785A (en) | 1984-05-24 | 1987-03-31 | Geoffrey S. Martin | Dual lumen cannula |
US4655771A (en) | 1982-04-30 | 1987-04-07 | Shepherd Patents S.A. | Prosthesis comprising an expansible or contractile tubular body |
JPS6220830Y2 (en) | 1980-05-15 | 1987-05-27 | ||
US4671795A (en) | 1984-11-19 | 1987-06-09 | Mulchin William L | Permanent/retrievable ureteral catheter |
US4675004A (en) | 1985-04-16 | 1987-06-23 | Quinton Instrument Company | Dual-lumen fistula needle |
CA1225299A (en) | 1985-07-18 | 1987-08-11 | Chao-Liang Bai | Catheter |
US4687471A (en) | 1985-05-01 | 1987-08-18 | Curators Of The University Of Missouri | Peritoneal dialysis catheter |
US4692141A (en) | 1982-03-08 | 1987-09-08 | Mahurkar Sakharam D | Double lumen catheter |
US4694838A (en) | 1984-01-30 | 1987-09-22 | Mallinckrodt, Inc. | Loop coronary catheter |
US4713049A (en) | 1986-08-05 | 1987-12-15 | Medical Engineering Corporation | Ureteral stent kit |
US4722725A (en) | 1983-04-12 | 1988-02-02 | Interface Biomedical Laboratories, Inc. | Methods for preventing the introduction of air or fluid into the body of a patient |
US4732152A (en) | 1984-12-05 | 1988-03-22 | Medinvent S.A. | Device for implantation and a method of implantation in a vessel using such device |
US4737146A (en) | 1979-12-25 | 1988-04-12 | Yoshikiyo Amaki | Multi-lumen epidural catheter |
US4738667A (en) | 1986-11-04 | 1988-04-19 | Galloway Niall T M | Preformed catheter assembly |
US4747840A (en) | 1986-09-17 | 1988-05-31 | Ladika Joseph E | Selective pulmonary arteriograph catheter |
DE3112762C2 (en) | 1981-03-31 | 1988-06-09 | Juergen Dr.Med. 6500 Mainz De Schrezenmeir | |
US4753640A (en) | 1986-10-06 | 1988-06-28 | Catheter Technology Corporation | Catheters and methods |
US4755176A (en) | 1987-06-11 | 1988-07-05 | Patel Piyush V | Catheter with side hole |
US4769005A (en) | 1987-08-06 | 1988-09-06 | Robert Ginsburg | Selective catheter guide |
US4770652A (en) | 1985-02-12 | 1988-09-13 | Mahurkar Sakharam D | Method and apparatus for using dual-lumen catheters for extracorporeal treatment |
US4772268A (en) | 1984-05-25 | 1988-09-20 | Cook Incorporated | Two lumen hemodialysis catheter |
US4773432A (en) | 1987-02-09 | 1988-09-27 | Schneider-Shiley (Usa) Inc. | Bail-out catheter |
US4776841A (en) | 1986-09-11 | 1988-10-11 | Catalano Marc L | Bilumen peripheral venous catheter with adapter |
US4782834A (en) | 1987-01-06 | 1988-11-08 | Advanced Cardiovascular Systems, Inc. | Dual lumen dilatation catheter and method of manufacturing the same |
US4787884A (en) | 1987-09-01 | 1988-11-29 | Medical Engineering Corporation | Ureteral stent guidewire system |
US4790810A (en) | 1985-11-04 | 1988-12-13 | American Medical Systems, Inc. | Ureteral connector stent |
US4790809A (en) | 1985-08-29 | 1988-12-13 | Medical Engineering Corporation | Ureteral stent |
US4795439A (en) | 1986-06-06 | 1989-01-03 | Edward Weck Incorporated | Spiral multi-lumen catheter |
US4808155A (en) | 1986-02-27 | 1989-02-28 | Mahurkar Sakharam D | Simple double lumen catheter |
US4809710A (en) | 1988-01-11 | 1989-03-07 | Williamson Jeffrey L | Multilumen manometer catheter |
US4813925A (en) | 1987-04-21 | 1989-03-21 | Medical Engineering Corporation | Spiral ureteral stent |
US4813429A (en) | 1986-05-12 | 1989-03-21 | Biodan Medical Systems Ltd. | Catheter and probe |
US4820262A (en) | 1985-12-12 | 1989-04-11 | Medical Engineering Corporation | Ureteral stent |
US4822345A (en) | 1986-08-14 | 1989-04-18 | Danforth John W | Controllable flexibility catheter |
FR2611486B1 (en) | 1987-02-27 | 1989-05-12 | Berberian Jean Pierre | URETRAL PROSTHESIS |
US4838881A (en) | 1984-05-04 | 1989-06-13 | Deseret Medical, Inc. | Multilumen catheter and associated IV tubing |
US4842590A (en) | 1983-12-14 | 1989-06-27 | Terumo Kabushiki Kaisha | Catheter and method for making |
US4842582A (en) | 1985-02-12 | 1989-06-27 | Mahurkar Sakharam D | Method and apparatus for using dual-lumen catheters for extracorporeal treatment |
US4846814A (en) | 1986-01-16 | 1989-07-11 | Sherwood Medical Company | Non-whip catheter |
US4846791A (en) | 1988-09-02 | 1989-07-11 | Advanced Medical Technology & Development Corp. | Multi-lumen catheter |
EP0326908A2 (en) | 1988-01-30 | 1989-08-09 | B. Braun Melsungen AG | Insertion device for urethral catheter |
US4863424A (en) | 1983-11-18 | 1989-09-05 | Blake Joseph W Iii | Tubular medical device and method of making and using the same |
US4863442A (en) | 1987-08-14 | 1989-09-05 | C. R. Bard, Inc. | Soft tip catheter |
US4865595A (en) | 1986-02-28 | 1989-09-12 | Heyden Eugene L | Drainage device for urine |
EP0333308A2 (en) | 1988-03-17 | 1989-09-20 | Vas-Cath Incorporated | Dual lumen catheter |
US4874360A (en) * | 1988-07-01 | 1989-10-17 | Medical Engineering Corporation | Ureteral stent system |
US4887996A (en) | 1987-02-13 | 1989-12-19 | Stig Bengmark | Method and tube equipment for supplying fluid to a space and draining said space |
US4894057A (en) | 1987-06-19 | 1990-01-16 | Howes Randolph M | Flow enhanced multi-lumen venous catheter device |
US4895561A (en) | 1988-05-16 | 1990-01-23 | Mahurkar Sakharam D | Dual-lumen catheter-connecting system |
US4913683A (en) | 1988-07-05 | 1990-04-03 | Medical Engineering Corporation | Infusion stent system |
US4931037A (en) | 1988-10-13 | 1990-06-05 | International Medical, Inc. | In-dwelling ureteral stent and injection stent assembly, and method of using same |
US4950228A (en) | 1990-01-10 | 1990-08-21 | Knapp Jr Peter M | Ureteral stent |
EP0386408A1 (en) | 1989-03-09 | 1990-09-12 | B. Braun Melsungen AG | Catheter |
US4960411A (en) | 1984-09-18 | 1990-10-02 | Medtronic Versaflex, Inc. | Low profile sterrable soft-tip catheter |
US4960409A (en) | 1986-09-11 | 1990-10-02 | Catalano Marc L | Method of using bilumen peripheral venous catheter with adapter |
US4961809A (en) | 1988-04-21 | 1990-10-09 | Vas-Cath Incorporated | Method of producing a dual lumen catheter including forming a flare |
US4963129A (en) | 1988-09-17 | 1990-10-16 | Willy Ruesch Ag | System for the drainage of body cavities |
US4973301A (en) | 1989-07-11 | 1990-11-27 | Israel Nissenkorn | Catheter and method of using same |
US4978341A (en) | 1988-04-07 | 1990-12-18 | Schneider Europe | Introducer valve for a catheter arrangement |
US4981482A (en) | 1987-08-20 | 1991-01-01 | Kazuo Ichikawa | Device for forming an inserting hole for an endoscope |
US4983169A (en) | 1988-03-04 | 1991-01-08 | Yuichi Furukawa | Catheter for angiography |
US4985022A (en) | 1988-11-23 | 1991-01-15 | Med Institute, Inc. | Catheter having durable and flexible segments |
US4986814A (en) | 1988-06-13 | 1991-01-22 | Indianapolis Center For Advanced Research | One-punch catheter |
US4990133A (en) | 1990-04-02 | 1991-02-05 | Tenax-Glynn Corporation | Removable J-J ureteral stent |
US4994071A (en) | 1989-05-22 | 1991-02-19 | Cordis Corporation | Bifurcating stent apparatus and method |
US4995865A (en) | 1989-06-09 | 1991-02-26 | Worldwide Medical Plastics Inc. | Multi-lumen catheters |
US4995868A (en) | 1988-10-12 | 1991-02-26 | Bard Limited | Catheter |
US4995863A (en) | 1986-10-06 | 1991-02-26 | Catheter Technology Corporation | Catheter with slit valve |
GB2235384A (en) | 1989-08-28 | 1991-03-06 | Thermedics Inc | Multi-lumen catheter |
US4998919A (en) | 1987-10-31 | 1991-03-12 | Schnepp Pesch Wolfram | Thrombectomy apparatus |
US5009636A (en) | 1989-12-06 | 1991-04-23 | The Kendall Company | Dual-lumen catheter apparatus and method |
US5013296A (en) | 1989-09-21 | 1991-05-07 | Research Medical, Inc. | Antegrade cardioplegia cannula |
US5019102A (en) | 1987-12-10 | 1991-05-28 | Eberhard Hoene | Anti-refluxive internal ureteral stent with a dynamic hood-valve at the vesical end for prevention of urinary reflux into the upper urinary tract upon increase of vesical pressure |
US5026377A (en) | 1989-07-13 | 1991-06-25 | American Medical Systems, Inc. | Stent placement instrument and method |
US5029580A (en) | 1990-07-18 | 1991-07-09 | Ballard Medical Products | Medical aspirating apparatus with multi-lumen catheter tube and methods |
US5041083A (en) | 1987-06-25 | 1991-08-20 | Terumo Kabushiki Kaisha | Multi-luminal catheter, multi-luminal catheter assembly |
US5045072A (en) | 1989-06-13 | 1991-09-03 | Cordis Corporation | Catheter having highly radiopaque, flexible tip |
US5053004A (en) | 1990-08-24 | 1991-10-01 | Medical Components, Inc. | Catheter having two coaxial lumens |
US5052998A (en) | 1990-04-04 | 1991-10-01 | Zimmon David S | Indwelling stent and method of use |
US5053023A (en) | 1988-10-25 | 1991-10-01 | Vas-Cath Incorporated | Catheter for prolonged access |
US5057073A (en) | 1988-04-21 | 1991-10-15 | Vas-Cath Incorporated | Dual lumen catheter |
US5061275A (en) | 1986-04-21 | 1991-10-29 | Medinvent S.A. | Self-expanding prosthesis |
US5069673A (en) | 1990-02-07 | 1991-12-03 | Cordis Corporation | Catheter with double step-down bore |
US5078720A (en) | 1990-05-02 | 1992-01-07 | American Medical Systems, Inc. | Stent placement instrument and method |
US5116309A (en) | 1989-01-25 | 1992-05-26 | Coll Milton E | Ureteral stent-catheter system having varying diameter stent |
EP0490459A1 (en) | 1990-12-14 | 1992-06-17 | The Kendall Company | Multilumen catheter |
US5124127A (en) | 1989-01-26 | 1992-06-23 | Shiley, Incorporated | Hollow fiber blood oxygenator |
US5129910A (en) | 1991-07-26 | 1992-07-14 | The Regents Of The University Of California | Stone expulsion stent |
US5135487A (en) | 1988-11-10 | 1992-08-04 | C. R. Bard, Inc. | Balloon dilatation catheter with integral guidewire |
US5135599A (en) | 1987-12-22 | 1992-08-04 | Vas-Cath Incorporated | Method of making a triple lumen catheter |
DE4103573A1 (en) | 1991-02-06 | 1992-08-20 | Wilhelm Alexander Dr Huebner | Catheter for removing obstructions from urine duct - consists of tube made of plastics material with curved inner end |
US5141499A (en) | 1991-10-09 | 1992-08-25 | Zappacosta Anthony R | Peritoneal dialysis catheter |
US5141502A (en) | 1991-08-28 | 1992-08-25 | Macaluso Jr Joseph N | Ureteral stent |
US5147370A (en) | 1991-06-12 | 1992-09-15 | Mcnamara Thomas O | Nitinol stent for hollow body conduits |
US5149330A (en) | 1991-01-10 | 1992-09-22 | The Kendall Company | Catheter convertible from single to multilumen |
US5156596A (en) | 1991-02-04 | 1992-10-20 | Menlo Care, Inc. | Catheter with changeable number of lumens |
US5156592A (en) | 1990-04-04 | 1992-10-20 | Martin Geoffrey S | Pre-curved dual lumen catheter |
US5160325A (en) | 1986-10-06 | 1992-11-03 | C. R. Bard, Inc. | Catheter with novel lumens shapes |
US5167623A (en) | 1990-12-27 | 1992-12-01 | The Kendall Company | Multilumen catheter |
US5171216A (en) | 1989-08-28 | 1992-12-15 | Thermedics, Inc. | Multi-lumen catheter coupling |
US5176626A (en) | 1992-01-15 | 1993-01-05 | Wilson-Cook Medical, Inc. | Indwelling stent |
US5176625A (en) | 1990-10-25 | 1993-01-05 | Brisson A Glen | Stent for ureter |
US5178803A (en) | 1987-06-25 | 1993-01-12 | Terumo Kabushiki Kaisha | Method of manufacturing a multi-luminal catheter, and multi-luminal catheter assembly |
US5188593A (en) | 1988-04-21 | 1993-02-23 | Vas-Cath Incorporated | Dual lumen catheter |
US5190520A (en) | 1990-10-10 | 1993-03-02 | Strato Medical Corporation | Reinforced multiple lumen catheter |
US5195962A (en) | 1987-12-22 | 1993-03-23 | Vas-Cath Incorporated | Triple lumen catheter |
US5197951A (en) | 1983-12-14 | 1993-03-30 | Mahurkar Sakharam D | Simple double lumen catheter |
DE4134030A1 (en) | 1991-10-15 | 1993-04-22 | Angiomed Ag | Device for draining ureter - has thread which passes through device and is used to control its curvature |
US5205830A (en) | 1991-11-12 | 1993-04-27 | Arrow International Investment Corporation | Catheter assembly |
US5207648A (en) | 1990-12-14 | 1993-05-04 | The Kendall Company | Multilumen catheter |
US5209723A (en) | 1990-01-08 | 1993-05-11 | The Curators Of The University Of Missouri | Multiple lumen catheter for hemodialysis |
US5211627A (en) | 1991-02-12 | 1993-05-18 | C. R. Bard, Inc. | Catheter and method for infusion of aerated liquid |
US5221255A (en) | 1990-01-10 | 1993-06-22 | Mahurkar Sakharam D | Reinforced multiple lumen catheter |
US5221256A (en) | 1992-02-10 | 1993-06-22 | Mahurkar Sakharam D | Multiple-lumen catheter |
US5221253A (en) | 1989-01-25 | 1993-06-22 | Coll Milton E | Urological stent-catheter system having varing diameter stent |
US5224953A (en) | 1992-05-01 | 1993-07-06 | The Beth Israel Hospital Association | Method for treatment of obstructive portions of urinary passageways |
US5234663A (en) | 1989-01-26 | 1993-08-10 | Shiley, Inc. | Hollow fiber blood oxygenator |
EP0554722A1 (en) | 1990-01-10 | 1993-08-11 | Sakharam Dhundiraj Mahurkar | Reinforced multiple-lumen catheter |
US5240677A (en) | 1989-01-26 | 1993-08-31 | Shiley, Inc. | Hollow fiber blood oxygenator |
US5242395A (en) | 1989-04-20 | 1993-09-07 | Cook Incorporated | Balloon decompression catheter |
US5246445A (en) | 1990-04-19 | 1993-09-21 | Instent Inc. | Device for the treatment of constricted ducts in human bodies |
US5250038A (en) | 1992-10-09 | 1993-10-05 | Cook Incorporated | Multiple lumen vascular access introducer sheath |
US5250034A (en) | 1990-09-17 | 1993-10-05 | E-Z-Em, Inc. | Pressure responsive valve catheter |
DE4213480A1 (en) | 1992-04-24 | 1993-10-28 | Urotech Med Tech Gmbh | YJ urea catheter with three arms - has hollow arms with drainage holes running through urethra tracts and into kidneys and also into bladder |
US5261879A (en) | 1992-09-03 | 1993-11-16 | Scimed Life Systems, Inc. | Coaxial/side-by-side lumen perfusion dilatation catheter |
US5269802A (en) | 1991-09-10 | 1993-12-14 | Garber Bruce B | Prostatic stent |
US5275597A (en) | 1992-05-18 | 1994-01-04 | Baxter International Inc. | Percutaneous transluminal catheter and transmitter therefor |
DE9314585U1 (en) | 1993-09-27 | 1994-01-27 | Urotech medizinische Technologie GmbH, 83052 Bruckmühl | Ureteral splint |
US5282784A (en) | 1991-10-09 | 1994-02-01 | Mentor Corporation | Injection stent system |
US5292305A (en) | 1991-09-10 | 1994-03-08 | Cordis Corporation | Double-lumen angioscopy catheter |
US5295954A (en) | 1990-11-20 | 1994-03-22 | Sachse Hans Ernst | Arrangement consisting of ureter tube, (stent) mandrin and auxiliary tube |
US5308322A (en) | 1993-04-19 | 1994-05-03 | Tennican Patrick O | Central venous catheter access system |
US5318532A (en) | 1989-10-03 | 1994-06-07 | C. R. Bard, Inc. | Multilumen catheter with variable cross-section lumens |
US5324274A (en) | 1992-03-30 | 1994-06-28 | Med-Pro Design, Inc. | Catheter having rotary valves |
US5330483A (en) | 1992-12-18 | 1994-07-19 | Advanced Surgical Inc. | Specimen reduction device |
US5330449A (en) | 1991-01-17 | 1994-07-19 | Sherwood Medical Company | Catheter strain relief device |
US5338311A (en) | 1993-08-23 | 1994-08-16 | Mahurkar Sakharam D | Hypodermic needle assembly |
US5342387A (en) | 1992-06-18 | 1994-08-30 | American Biomed, Inc. | Artificial support for a blood vessel |
US5342301A (en) | 1992-08-13 | 1994-08-30 | Advanced Polymers Incorporated | Multi-lumen balloons and catheters made therewith |
US5344412A (en) | 1991-12-10 | 1994-09-06 | The Kendall Company | Microbore catheter with side port(s) |
US5346471A (en) | 1993-03-22 | 1994-09-13 | Raulerson J Daniel | Dual lumen catheter |
US5348536A (en) | 1993-08-02 | 1994-09-20 | Quinton Instrument Company | Coextruded catheter and method of forming |
US5354309A (en) | 1991-10-11 | 1994-10-11 | Angiomed Ag | Apparatus for widening a stenosis in a body cavity |
US5356423A (en) | 1991-01-04 | 1994-10-18 | American Medical Systems, Inc. | Resectable self-expanding stent |
US5356424A (en) | 1993-02-05 | 1994-10-18 | American Cyanamid Co. | Laparoscopic suturing device |
US5360397A (en) | 1993-07-02 | 1994-11-01 | Corvita Corporation | Hemodiaylsis catheter and catheter assembly |
US5364344A (en) | 1993-10-22 | 1994-11-15 | The Kendall Company | Dual lumen catheter |
US5364340A (en) | 1989-01-25 | 1994-11-15 | Coll Milton E | Ureteral stent-catheter having varying internal diameter and method of use |
US5366464A (en) | 1993-07-22 | 1994-11-22 | Belknap John C | Atherectomy catheter device |
US5372600A (en) | 1991-10-31 | 1994-12-13 | Instent Inc. | Stent delivery systems |
US5374245A (en) | 1990-01-10 | 1994-12-20 | Mahurkar; Sakharam D. | Reinforced multiple-lumen catheter and apparatus and method for making the same |
US5378230A (en) | 1993-11-01 | 1995-01-03 | Mahurkar; Sakharam D. | Triple-lumen critical care catheter |
US5380276A (en) | 1994-02-28 | 1995-01-10 | The Kendall Company | Dual lumen catheter and method of use |
US5380270A (en) | 1990-12-07 | 1995-01-10 | Willy Rusch Ag | Ureteral catheter |
US5383928A (en) | 1992-06-10 | 1995-01-24 | Emory University | Stent sheath for local drug delivery |
US5391196A (en) | 1993-06-18 | 1995-02-21 | Devonec; Marian | Method for therapeutic treatment of an obstructed natural canal |
US5395316A (en) | 1993-08-11 | 1995-03-07 | Med-Pro Design, Inc. | Triple lumen catheter |
US5399172A (en) | 1994-06-21 | 1995-03-21 | Med-Pro Design, Inc. | Catheter having ganged rotary valves |
US5401257A (en) | 1993-04-27 | 1995-03-28 | Boston Scientific Corporation | Ureteral stents, drainage tubes and the like |
US5403291A (en) | 1993-08-02 | 1995-04-04 | Quinton Instrument Company | Catheter with elongated side holes |
US5405329A (en) | 1991-01-08 | 1995-04-11 | Durand; Alain J. | Intravascular multi-lumen catheter, capable of being implanted by "tunnelling" |
US5405380A (en) | 1992-10-12 | 1995-04-11 | Schneider (Europe) A.G. | Catheter with a vascular support |
US5405320A (en) | 1990-01-08 | 1995-04-11 | The Curators Of The University Of Missouri | Multiple lumen catheter for hemodialysis |
US5405341A (en) | 1993-06-03 | 1995-04-11 | Med-Pro Design, Inc. | Catheter with multiple lumens |
US5411490A (en) | 1993-04-19 | 1995-05-02 | Hyprotek, Inc. | Initialization and access system for multi-lumen central venous catheters |
US5440327A (en) | 1992-07-28 | 1995-08-08 | Calcomp Inc. | Polychromatic pen for pen plotters with color mixing at media surface |
US5441515A (en) | 1993-04-23 | 1995-08-15 | Advanced Cardiovascular Systems, Inc. | Ratcheting stent |
US5449372A (en) | 1990-10-09 | 1995-09-12 | Scimed Lifesystems, Inc. | Temporary stent and methods for use and manufacture |
US5454790A (en) | 1994-05-09 | 1995-10-03 | Innerdyne, Inc. | Method and apparatus for catheterization access |
WO1995026763A1 (en) | 1994-04-04 | 1995-10-12 | Loggie Brian W | Multi-lumen catheter system |
US5464398A (en) | 1990-11-27 | 1995-11-07 | Haindl; Hans | Catheter |
US5470322A (en) | 1994-04-15 | 1995-11-28 | Danforth Biomedical Inc. | Reinforced multilumen catheter for axially varying stiffness |
US5480380A (en) | 1993-03-16 | 1996-01-02 | Med-Pro Design, Inc. | Coaxial dual lumen catheter |
US5486159A (en) | 1993-10-01 | 1996-01-23 | Mahurkar; Sakharam D. | Multiple-lumen catheter |
US5514176A (en) | 1995-01-20 | 1996-05-07 | Vance Products Inc. | Pull apart coil stent |
US5514178A (en) | 1993-06-24 | 1996-05-07 | Synthelabo | Prosthesis for bodily canal |
US5520697A (en) | 1992-06-20 | 1996-05-28 | Angiomed Ag | Apparatus for correcting the position of a stent |
US5522807A (en) | 1994-09-07 | 1996-06-04 | Luther Medical Products, Inc. | Dual lumen infusion/aspiration catheter |
US5527337A (en) | 1987-06-25 | 1996-06-18 | Duke University | Bioabsorbable stent and method of making the same |
US5531741A (en) | 1994-08-18 | 1996-07-02 | Barbacci; Josephine A. | Illuminated stents |
US5554136A (en) | 1994-09-07 | 1996-09-10 | Luther Medical Products, Inc. | Dual lumen infusion/aspiration catheter |
US5554147A (en) * | 1994-02-01 | 1996-09-10 | Caphco, Inc. | Compositions and devices for controlled release of active ingredients |
US5556390A (en) | 1995-03-07 | 1996-09-17 | Quinton Instrument Company | Catheter with oval or elliptical lumens |
US5562641A (en) | 1993-05-28 | 1996-10-08 | A Bromberg & Co. Ltd. | Two way shape memory alloy medical stent |
US5569184A (en) | 1992-04-29 | 1996-10-29 | Cardiovascular Dynamics, Inc. | Delivery and balloon dilatation catheter and method of using |
US5569182A (en) | 1990-01-08 | 1996-10-29 | The Curators Of The University Of Missouri | Clot resistant multiple lumen catheter and method |
US5571093A (en) | 1994-09-21 | 1996-11-05 | Cruz; Cosme | Multiple-lumen catheter |
US5573508A (en) | 1994-11-22 | 1996-11-12 | Advanced Cardiovascular Systems, Inc. | Catheter with an expandable perfusion lumen |
US5599306A (en) | 1994-04-01 | 1997-02-04 | Localmed, Inc. | Method and apparatus for providing external perfusion lumens on balloon catheters |
US5599291A (en) | 1993-01-04 | 1997-02-04 | Menlo Care, Inc. | Softening expanding ureteral stent |
US5609627A (en) | 1994-02-09 | 1997-03-11 | Boston Scientific Technology, Inc. | Method for delivering a bifurcated endoluminal prosthesis |
US5613980A (en) | 1994-12-22 | 1997-03-25 | Chauhan; Tusharsindhu C. | Bifurcated catheter system and method |
WO1997010858A1 (en) | 1995-09-21 | 1997-03-27 | Quinton Instrument Company | Tapered and reinforced catheter |
US5624395A (en) | 1995-02-23 | 1997-04-29 | Cv Dynamics, Inc. | Urinary catheter having palpitatable valve and balloon and method for making same |
US5624413A (en) | 1996-02-23 | 1997-04-29 | Medical Components, Inc. | Method for inserting a multiple catheter assembly |
WO1997017094A1 (en) | 1995-11-07 | 1997-05-15 | Boston Scientific Corporation | Ureteral stent with small bladder tail(s) |
US5630794A (en) | 1992-08-12 | 1997-05-20 | Vidamed, Inc. | Catheter tip and method of manufacturing |
US5639278A (en) | 1993-10-21 | 1997-06-17 | Corvita Corporation | Expandable supportive bifurcated endoluminal grafts |
US5643222A (en) | 1993-08-23 | 1997-07-01 | Mahurkar; Sakharam D. | Hypodermic needle assembly |
US5647843A (en) | 1996-05-24 | 1997-07-15 | Vance Products Incorporated | Anti-reflux ureteral stent |
US5647858A (en) | 1989-07-25 | 1997-07-15 | Smith & Nephew, Inc. | Zirconium oxide and zirconium nitride coated catheters |
US5649909A (en) | 1992-04-06 | 1997-07-22 | Scimed Life Systems, Inc. | Variable stiffness multi-lumen catheter |
US5653689A (en) | 1995-09-30 | 1997-08-05 | Abacus Design & Development, Inc. | Infusion catheter |
US5667486A (en) | 1993-04-27 | 1997-09-16 | Ams Medinvent, S.A. | Prostatic stent |
US5674277A (en) | 1994-12-23 | 1997-10-07 | Willy Rusch Ag | Stent for placement in a body tube |
US5676697A (en) | 1996-07-29 | 1997-10-14 | Cardiovascular Dynamics, Inc. | Two-piece, bifurcated intraluminal graft for repair of aneurysm |
WO1997037699A1 (en) | 1996-04-11 | 1997-10-16 | Sherwood Medical Company | Triple lumen catheter |
WO1997037718A1 (en) | 1996-04-10 | 1997-10-16 | Biolink Corporation | Dual-lumen catheter and method of use |
US5681274A (en) | 1995-03-31 | 1997-10-28 | Boston Scientific Corporation | Variable length uretheral stent |
EP0806189A1 (en) | 1996-05-10 | 1997-11-12 | Variomed AG | Device for draining with drainage tube |
US5695479A (en) | 1993-11-01 | 1997-12-09 | Jagpal; Ravindar | Instrument, system, kit and method for catheterization procedures |
US5700286A (en) | 1994-12-13 | 1997-12-23 | Advanced Cardiovascular Systems, Inc. | Polymer film for wrapping a stent structure |
US5707386A (en) | 1993-02-04 | 1998-01-13 | Angiomed Gmbh & Company Medizintechnik Kg | Stent and method of making a stent |
US5723003A (en) | 1994-09-13 | 1998-03-03 | Ultrasonic Sensing And Monitoring Systems | Expandable graft assembly and method of use |
US5766209A (en) | 1993-02-19 | 1998-06-16 | Devonec; Marian A. | Prosthesis intended for the treatment of a natural lumen or tract, in particular an endo-urethral prosthesis |
US5769868A (en) | 1986-04-15 | 1998-06-23 | Yock; Paul G. | Angioplasty apparatus facilitating rapid exchanges |
US5776161A (en) | 1995-10-16 | 1998-07-07 | Instent, Inc. | Medical stents, apparatus and method for making same |
US5792400A (en) | 1988-11-10 | 1998-08-11 | Biocon Oy | Method of manufacturing biodegradable surgical implants and devices |
US5792105A (en) | 1996-09-11 | 1998-08-11 | Boston Scientific Corporation | Multichannel balloon catheter for delivering fluid |
US5795326A (en) | 1997-01-29 | 1998-08-18 | Baxter International Inc. | Double lumen tubing design for catheter |
US5795319A (en) | 1997-03-07 | 1998-08-18 | Circon Corporation | Easily removable ureteral stent |
US5814006A (en) | 1996-05-28 | 1998-09-29 | Planz; Konrad | Temporary stent in the urine path |
US5830179A (en) | 1996-04-09 | 1998-11-03 | Endocare, Inc. | Urological stent therapy system and method |
US5830184A (en) | 1996-03-06 | 1998-11-03 | Medical Components, Inc. | Composite catheter stabilizing devices, methods of making the same and catheter extracting device |
US5843028A (en) | 1992-05-11 | 1998-12-01 | Medical Innovations Corporation | Multi-lumen endoscopic catheter |
US5865815A (en) | 1997-04-25 | 1999-02-02 | Contimed, Inc. | Prostatic obstruction relief catheter |
US5868718A (en) | 1995-03-02 | 1999-02-09 | Scimed Life Systems, Inc. | Process to form dimensionally variable tubular members for use in catheter procedures |
US5876417A (en) | 1995-07-10 | 1999-03-02 | Devonec; Marian | Detachable catheter apparatus |
EP0876803A3 (en) | 1997-05-08 | 1999-04-28 | C.R. Bard, Inc. | TMR stent and delivery system |
US5906640A (en) | 1994-11-03 | 1999-05-25 | Divysio Solutions Ulc | Bifurcated stent and method for the manufacture and delivery of same |
US5922443A (en) | 1991-05-21 | 1999-07-13 | Larsen; Charles E. | Polymeric article, such as a medical catheter, and method for making the same |
US5964771A (en) | 1993-03-30 | 1999-10-12 | Medtronic Instent Inc. | Temporary stent system |
US6033413A (en) | 1998-04-20 | 2000-03-07 | Endocare, Inc. | Stent delivery system |
US6146396A (en) | 1999-03-05 | 2000-11-14 | Board Of Regents, The University Of Texas System | Declotting method and apparatus |
US6197014B1 (en) | 1996-05-30 | 2001-03-06 | Target Therapeutics, Inc. | Kink-resistant braided catheter with distal side holes |
US6248100B1 (en) | 1997-08-14 | 2001-06-19 | Scimed Life Systems, Inc. | Drainage catheter delivery system |
US6258098B1 (en) | 1998-05-08 | 2001-07-10 | William N. Taylor | Stent placement and removal system |
US6283991B1 (en) | 1995-12-01 | 2001-09-04 | Medtronics Inc. | Endoluminal prostheses and therapies for highly variable body lumens |
US6306105B1 (en) | 1998-05-14 | 2001-10-23 | Scimed Life Systems, Inc. | High performance coil wire |
US20010053936A1 (en) | 2000-05-26 | 2001-12-20 | Whitmore Willet F. | Ureteral stent |
US6332892B1 (en) | 1999-03-02 | 2001-12-25 | Scimed Life Systems, Inc. | Medical device with one or more helical coils |
US6334868B1 (en) | 1999-10-08 | 2002-01-01 | Advanced Cardiovascular Systems, Inc. | Stent cover |
US6371953B1 (en) | 1993-03-30 | 2002-04-16 | Intratherapeutics, Inc. | Temporary stent system |
US6395021B1 (en) | 1997-02-26 | 2002-05-28 | Applied Medical Resources Corporation | Ureteral stent system apparatus and method |
US6450987B1 (en) | 2001-02-01 | 2002-09-17 | Innercool Therapies, Inc. | Collapsible guidewire lumen |
US6558350B1 (en) | 2000-06-20 | 2003-05-06 | Applied Medical Resources Corp. | Drainage catheter |
US6569150B2 (en) | 2000-04-11 | 2003-05-27 | Scimed Life Systems, Inc. | Reinforced retention structures |
US6656146B1 (en) | 1995-11-07 | 2003-12-02 | Scimed Life Systems, Inc. | Medical device with tail(s) |
US6676623B2 (en) | 2001-05-04 | 2004-01-13 | Scimed Life Systems, Inc. | Drainage devices and methods |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL281496A (en) * | 1962-06-13 | 1900-01-01 | ||
US4185631A (en) * | 1978-03-17 | 1980-01-29 | Johnson & Johnson | Readily removable expanding catamenial tampon |
WO1984004043A1 (en) | 1983-04-15 | 1984-10-25 | Baxter Travenol Lab | A double lumen cannula and its method of manufacture |
US4988169A (en) * | 1986-09-22 | 1991-01-29 | British Telecommunications Public Limited Company | Optical signal control method and apparatus |
US4820260A (en) * | 1986-11-10 | 1989-04-11 | Hayden Steven M | Method and apparatus for extravascular treatment of red blood cells |
DE3740288C1 (en) * | 1987-11-27 | 1989-04-13 | Reuter Hans Joachim | Self-retaining catheter |
AU5134390A (en) | 1989-04-18 | 1990-10-25 | Paul Christopher Azoulay | Improvements in applicators, spreaders and the like |
US5098440A (en) * | 1990-08-14 | 1992-03-24 | Cordis Corporation | Object retrieval method and apparatus |
US5509900A (en) * | 1992-03-02 | 1996-04-23 | Kirkman; Thomas R. | Apparatus and method for retaining a catheter in a blood vessel in a fixed position |
US5964744A (en) | 1993-01-04 | 1999-10-12 | Menlo Care, Inc. | Polymeric medical device systems having shape memory |
US6991614B2 (en) * | 1995-11-07 | 2006-01-31 | Boston Scientific Scimed, Inc. | Ureteral stent for improved patient comfort |
US6458145B1 (en) * | 2000-11-28 | 2002-10-01 | Hatch Medical L.L.C. | Intra vascular snare and method of forming the same |
US6887215B2 (en) | 2001-06-01 | 2005-05-03 | Boston Scientific Scimed, Inc. | Compressible ureteral stent for comfort |
-
2003
- 2003-04-04 US US10/406,876 patent/US6991614B2/en not_active Expired - Fee Related
-
2006
- 2006-01-09 US US11/327,409 patent/US7678154B2/en not_active Expired - Fee Related
-
2010
- 2010-02-02 US US12/698,487 patent/US8246689B2/en not_active Expired - Fee Related
-
2012
- 2012-07-26 US US13/559,224 patent/US8845752B2/en not_active Expired - Fee Related
Patent Citations (391)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US256590A (en) | 1882-04-18 | Double catheter | ||
US386603A (en) | 1888-07-24 | Stomach-pump | ||
US559620A (en) | 1896-05-05 | Joseph shearer | ||
US191775A (en) | 1877-06-12 | Improvement in syringes | ||
US1211928A (en) | 1916-03-25 | 1917-01-09 | Arthur R Fisher | Colon-irrigator. |
US2257369A (en) | 1939-10-21 | 1941-09-30 | Thomas A Davis | Catheter and drainage tube |
US3087493A (en) | 1960-04-27 | 1963-04-30 | George W Schossow | Endotracheal tube |
FR1285953A (en) | 1961-01-16 | 1962-03-02 | Eynard & Cie J | Improvements to surgical tubular probes |
US3359974A (en) | 1963-10-07 | 1967-12-26 | Hassan H Khalil | Device for the thermal determination of cardiac volumetric performance |
US3314430A (en) | 1964-04-10 | 1967-04-18 | Brunswick Corp | Sump drain catheter |
US3394705A (en) | 1965-10-22 | 1968-07-30 | Daniel J. Abramson | Drainage balloon catheter having means for antiseptic treatment of the urethra |
FR1508959A (en) | 1966-01-21 | 1968-01-12 | A catheter intended to allow the disobstruction of thrombosed vessels of sinuous configuration | |
US3485234A (en) | 1966-04-13 | 1969-12-23 | Cordis Corp | Tubular products and method of making same |
US3437088A (en) | 1966-12-01 | 1969-04-08 | Leonard J Bielinski | Apparatus for measuring motility of body organs |
US3633579A (en) | 1967-05-24 | 1972-01-11 | Sherwood Medical Ind Inc | Catheter placement device and method |
US3593713A (en) | 1968-07-12 | 1971-07-20 | Stanley A Bogoff | Catheter combination |
US3612050A (en) | 1969-04-01 | 1971-10-12 | David S Sheridan | Intravascular catheters |
US3746003A (en) | 1970-04-20 | 1973-07-17 | American Hospital Supply Corp | Multi-lumen balloon catheter |
US3788326A (en) | 1970-07-29 | 1974-01-29 | H Jacobs | Distally perforated catheter for use in ventilating system |
US3726281A (en) | 1971-12-08 | 1973-04-10 | Bard Inc C R | Self-lubricating catheter |
DE2259865A1 (en) | 1972-12-07 | 1974-06-12 | Josef Magasi | PUNCTURE CANNULA |
US3902492A (en) | 1973-05-14 | 1975-09-02 | Roger Malcolm Greenhalgh | Catheter |
US3906954A (en) | 1973-09-14 | 1975-09-23 | Nasa | Ophthalmic liquifaction pump |
US3828767A (en) | 1973-10-29 | 1974-08-13 | Fenton J | Angiographic and arteriographic catherters |
US3920023A (en) | 1974-03-21 | 1975-11-18 | Kendall & Co | Method and apparatus for placement of a suprapubic catheter |
US3995623A (en) | 1974-12-23 | 1976-12-07 | American Hospital Supply Corporation | Multipurpose flow-directed catheter |
FR2297640A1 (en) | 1975-01-15 | 1976-08-13 | Rhone Poulenc Ind | Catheter for simultaneous blood withdrawal and reinjection - for treatment e.g. with oxygen outside the body using only one incision |
US4004588A (en) | 1975-05-21 | 1977-01-25 | Wrightson Nma Limited | Apparatus for flushing ova from cows or mares |
US4096860A (en) | 1975-10-08 | 1978-06-27 | Mclaughlin William F | Dual flow encatheter |
US4037599A (en) | 1976-01-26 | 1977-07-26 | Raulerson James D | Continuous flow catheter device |
US4183961A (en) | 1976-02-03 | 1980-01-15 | Shiley Incorporated | Method of oxygenating blood |
US4182739A (en) | 1976-02-03 | 1980-01-08 | Shiley Incorporated | Blood oxygenator |
US4134402B1 (en) | 1976-02-11 | 1989-07-25 | ||
US4134402A (en) | 1976-02-11 | 1979-01-16 | Mahurkar Sakharam D | Double lumen hemodialysis catheter |
US4144884A (en) | 1976-03-29 | 1979-03-20 | Tersteegen Bernd J W | Double lumen catheter |
US4069814A (en) | 1976-05-06 | 1978-01-24 | Miles Laboratories, Inc. | Double lumen cannula apparatus |
US4149535A (en) | 1976-05-06 | 1979-04-17 | Gist-Brocades N.V. | Catheter holding device |
US4065264A (en) | 1976-05-10 | 1977-12-27 | Shiley Laboratories, Inc. | Blood oxygenator with integral heat exchanger for regulating the temperature of blood in an extracorporeal circuit |
US4138288A (en) | 1976-05-10 | 1979-02-06 | Shiley Scientific Incorporated | Method and apparatus for oxygenating and regulating the temperature of blood |
US4100246A (en) | 1976-06-21 | 1978-07-11 | Dow Corning Corporation | Method of forming a gastrointestinal tube |
US4138457A (en) | 1976-08-13 | 1979-02-06 | Sherwood Medical Industries Inc. | Method of making a plastic tube with plural lumens |
USRE31873E (en) | 1976-09-08 | 1985-04-30 | Venous catheter device | |
USRE31873F1 (en) | 1976-09-08 | 1988-11-15 | Venous catheter device | |
US4204541A (en) | 1977-01-24 | 1980-05-27 | Kapitanov Nikolai N | Surgical instrument for stitching up soft tissues with lengths of spiked suture material |
US4202332A (en) | 1977-01-26 | 1980-05-13 | Bernd Tersteegen | Double lumen catheter |
US4099528A (en) | 1977-02-17 | 1978-07-11 | Sorenson Research Co., Inc. | Double lumen cannula |
US4129129A (en) | 1977-03-18 | 1978-12-12 | Sarns, Inc. | Venous return catheter and a method of using the same |
US4203436A (en) | 1977-04-05 | 1980-05-20 | Lars Grimsrud | Assembly for dividing a hollow hypodermic needle into two separated flow conduits |
US4173981A (en) | 1977-05-23 | 1979-11-13 | University Of Utah | Cannula for arterial and venous bypass cannulation |
US4217895A (en) | 1977-06-03 | 1980-08-19 | Terumo Corporation | Intravascular catheter |
US4168703A (en) | 1977-07-18 | 1979-09-25 | Kenneth Kenigsberg | Gastroesophageal reflux diagnostic tool |
US4223676A (en) | 1977-12-19 | 1980-09-23 | Cavitron Corporation | Ultrasonic aspirator |
GB2017499A (en) | 1978-03-28 | 1979-10-10 | Fresenius Chem Pharm Ind | Double-passage catheter |
US4307723A (en) | 1978-04-07 | 1981-12-29 | Medical Engineering Corporation | Externally grooved ureteral stent |
US4212304A (en) | 1978-04-07 | 1980-07-15 | Medical Engineering Corp. | Uretheral catheter stent |
US4180068A (en) | 1978-04-13 | 1979-12-25 | Motion Control, Incorporated | Bi-directional flow catheter with retractable trocar/valve structure |
US4236520A (en) | 1978-12-04 | 1980-12-02 | Anderson Mark L | Fluid drain or injection tube for an animal's udder |
US4239042A (en) | 1979-04-05 | 1980-12-16 | Dow Corning K.K. | Catheter placement system |
US4257416A (en) | 1979-05-03 | 1981-03-24 | David Prager | Multi-channel venipuncture infusion set |
US4559046A (en) | 1979-08-20 | 1985-12-17 | Catheter Technology Corporation | Apparatus for intravenous therapy and hyperalimentation |
US4327722A (en) | 1979-08-20 | 1982-05-04 | Groshong Leroy E | Methods and apparatus for intravenous therapy and hyperalimentation |
US4243040A (en) | 1979-09-17 | 1981-01-06 | Beecher William H | Extracting device for removing objects from human body passages |
US4270535A (en) | 1979-10-18 | 1981-06-02 | Hospal Medical Corp. | Double lumen catheters |
US4334327A (en) | 1979-12-21 | 1982-06-15 | University Of Utah | Ureteral prosthesis |
US4737146A (en) | 1979-12-25 | 1988-04-12 | Yoshikiyo Amaki | Multi-lumen epidural catheter |
CA1092927A (en) | 1979-12-28 | 1981-01-06 | Allentyne Limited | Hemodialysis cannula for subclavian insertion |
US4493696A (en) | 1979-12-28 | 1985-01-15 | Allentyne Limited | Hemodialysis cannular for subclavian insertion |
EP0036642A2 (en) | 1980-03-21 | 1981-09-30 | Uthmann, Ulrich, Dr.-med. | Catheter |
US4385631A (en) | 1980-03-21 | 1983-05-31 | Ulrich Uthmann | Catheter |
CA1150122A (en) | 1980-04-16 | 1983-07-19 | Geoffrey S. Martin | Double-lumen cannula |
JPS6220830Y2 (en) | 1980-05-15 | 1987-05-27 | ||
US4413989A (en) | 1980-09-08 | 1983-11-08 | Angiomedics Corporation | Expandable occlusion apparatus |
JPS5790150A (en) | 1980-11-27 | 1982-06-04 | Toshiba Corp | Evaluating device for film quality of metal film for semiconductor device |
DE3112762C2 (en) | 1981-03-31 | 1988-06-09 | Juergen Dr.Med. 6500 Mainz De Schrezenmeir | |
US4406656A (en) | 1981-06-01 | 1983-09-27 | Brack Gillium Hattler | Venous catheter having collapsible multi-lumens |
US4419094A (en) | 1981-06-08 | 1983-12-06 | The Kendall Company | Suprapubic catheter system |
CA1167727A (en) | 1981-07-24 | 1984-05-22 | Geoffrey S. Martin | Cannula |
US4451252A (en) | 1981-07-24 | 1984-05-29 | Vas-Cath Of Canada Limited | Cannula |
GB2156220A (en) | 1981-07-24 | 1985-10-09 | Vas Cath Of Canada Limited | Improved cannula |
US4456000A (en) | 1981-08-17 | 1984-06-26 | Angiomedics Corporation | Expandable occlusion apparatus |
US4484585A (en) | 1981-09-12 | 1984-11-27 | Richard Wolf Gmbh | Catheters |
US4443333A (en) | 1981-09-24 | 1984-04-17 | Mahurkar Sakharam D | Portable dialysis system and pump therefor |
USD272651S (en) | 1981-11-02 | 1984-02-14 | Mahurkar Sakharam D | Double lumen catheter |
US4403983A (en) | 1981-11-06 | 1983-09-13 | Shiley Incorporated | Dual lumen subclavian cannula |
EP0079719A1 (en) | 1981-11-06 | 1983-05-25 | Shiley Incorporated | Dual lumen subclavian cannula |
US4626240A (en) | 1981-11-06 | 1986-12-02 | Shiley Incorporated | Dual lumen subclavian cannula |
US4405313A (en) | 1982-01-29 | 1983-09-20 | Sisley James R | Figure-eight, dual-lumen catheter and method of using |
US4692141A (en) | 1982-03-08 | 1987-09-08 | Mahurkar Sakharam D | Double lumen catheter |
US4568329A (en) | 1982-03-08 | 1986-02-04 | Mahurkar Sakharam D | Double lumen catheter |
US4405314A (en) | 1982-04-19 | 1983-09-20 | Cook Incorporated | Apparatus and method for catheterization permitting use of a smaller gage needle |
US4540402A (en) | 1982-04-20 | 1985-09-10 | Karl Aigner | Double perfusion catheter |
US4655771B1 (en) | 1982-04-30 | 1996-09-10 | Medinvent Ams Sa | Prosthesis comprising an expansible or contractile tubular body |
US4954126A (en) | 1982-04-30 | 1990-09-04 | Shepherd Patents S.A. | Prosthesis comprising an expansible or contractile tubular body |
US4655771A (en) | 1982-04-30 | 1987-04-07 | Shepherd Patents S.A. | Prosthesis comprising an expansible or contractile tubular body |
US4954126B1 (en) | 1982-04-30 | 1996-05-28 | Ams Med Invent S A | Prosthesis comprising an expansible or contractile tubular body |
WO1984000403A1 (en) | 1982-07-13 | 1984-02-02 | Karl Sauder | Axial piston pump |
FR2530958A1 (en) | 1982-07-29 | 1984-02-03 | Lacour Gayet Francois | Cylindrical catheter with one or several channels |
EP0101890B1 (en) | 1982-07-30 | 1986-09-24 | Karl Dr. Aigner | Double lumen catheter for a device for in-vivo cleansing of the blood |
US4563170A (en) | 1982-07-30 | 1986-01-07 | Karl Aigner | Device for in vivo purification of blood |
EP0101890A1 (en) | 1982-07-30 | 1984-03-07 | Karl Dr. Aigner | Double lumen catheter for a device for in-vivo cleansing of the blood |
US4504264A (en) | 1982-09-24 | 1985-03-12 | Kelman Charles D | Apparatus for and method of removal of material using ultrasonic vibraton |
US4601697A (en) | 1982-10-29 | 1986-07-22 | Miles Laboratories, Inc. | Long indwelling double bore catheter |
US4531933A (en) * | 1982-12-07 | 1985-07-30 | C. R. Bard, Inc. | Helical ureteral stent |
US4722725A (en) | 1983-04-12 | 1988-02-02 | Interface Biomedical Laboratories, Inc. | Methods for preventing the introduction of air or fluid into the body of a patient |
US4619643A (en) | 1983-07-25 | 1986-10-28 | Bai Chao Liang | Catheter |
US4568338A (en) | 1983-09-22 | 1986-02-04 | C. R. Bard, Inc. | Preformed catheter |
US4583968A (en) | 1983-10-03 | 1986-04-22 | Mahurkar Sakharam D | Smooth bore double lumen catheter |
EP0144525A2 (en) | 1983-10-27 | 1985-06-19 | Intermedicat Gmbh | Catheter socket |
US4543087A (en) | 1983-11-14 | 1985-09-24 | Quinton Instrument Company | Double lumen catheter tip |
US4863424A (en) | 1983-11-18 | 1989-09-05 | Blake Joseph W Iii | Tubular medical device and method of making and using the same |
US5197951A (en) | 1983-12-14 | 1993-03-30 | Mahurkar Sakharam D | Simple double lumen catheter |
US4842590A (en) | 1983-12-14 | 1989-06-27 | Terumo Kabushiki Kaisha | Catheter and method for making |
US4610657A (en) | 1984-01-03 | 1986-09-09 | Medical Engineering Corporation | Ureteral stent |
US4648865A (en) | 1984-01-12 | 1987-03-10 | Karl Aigner | Device for in vivo purification of blood |
US4666426A (en) | 1984-01-12 | 1987-05-19 | Karl Aigner | Double lumen catheter for a device for in-vivo purification of blood |
US4694838A (en) | 1984-01-30 | 1987-09-22 | Mallinckrodt, Inc. | Loop coronary catheter |
US4641652A (en) | 1984-04-12 | 1987-02-10 | Richard Wolf Gmbh | Applicator for tying sewing threads |
US4838881A (en) | 1984-05-04 | 1989-06-13 | Deseret Medical, Inc. | Multilumen catheter and associated IV tubing |
EP0168136A1 (en) | 1984-05-15 | 1986-01-15 | Shiley Incorporated | Dual lumen subclavian cannula |
US4682978A (en) | 1984-05-24 | 1987-07-28 | Vas-Cath Of Canada Limited | Dual lumen cannula |
CA1219785A (en) | 1984-05-24 | 1987-03-31 | Geoffrey S. Martin | Dual lumen cannula |
US4643711A (en) | 1984-05-25 | 1987-02-17 | Cook, Inc. | Two lumen hemodialysis catheter |
US4772268A (en) | 1984-05-25 | 1988-09-20 | Cook Incorporated | Two lumen hemodialysis catheter |
US4608993A (en) | 1984-07-31 | 1986-09-02 | Quinton Instrument Company | Blood flow measurement device and method |
CA1193508A (en) | 1984-08-15 | 1985-09-17 | Sakharam D. Mahurkar | Smooth bore double lumen catheter |
US4960411A (en) | 1984-09-18 | 1990-10-02 | Medtronic Versaflex, Inc. | Low profile sterrable soft-tip catheter |
US4643716A (en) | 1984-09-26 | 1987-02-17 | The Kendall Company | Multi-size ureteral stent |
EP0183421B1 (en) | 1984-11-15 | 1990-04-18 | Shiley Inc. | Multi-procedural embolectomy catheter |
EP0183421A2 (en) | 1984-11-15 | 1986-06-04 | Shiley Inc. | Multi-procedural embolectomy catheter |
US4671795A (en) | 1984-11-19 | 1987-06-09 | Mulchin William L | Permanent/retrievable ureteral catheter |
US4581012A (en) | 1984-12-05 | 1986-04-08 | I-Flow Corporation | Multilumen catheter set |
US4732152A (en) | 1984-12-05 | 1988-03-22 | Medinvent S.A. | Device for implantation and a method of implantation in a vessel using such device |
US4623327A (en) | 1985-02-12 | 1986-11-18 | Mahurkar Sakharam D | Method and apparatus for using dual-lumen catheters for extracorporeal treatment |
US4842582A (en) | 1985-02-12 | 1989-06-27 | Mahurkar Sakharam D | Method and apparatus for using dual-lumen catheters for extracorporeal treatment |
US4770652A (en) | 1985-02-12 | 1988-09-13 | Mahurkar Sakharam D | Method and apparatus for using dual-lumen catheters for extracorporeal treatment |
US4601701A (en) | 1985-02-25 | 1986-07-22 | Argon Medical Corp. | Multi-purpose multi-lumen catheter |
US4596548A (en) | 1985-03-25 | 1986-06-24 | Dlp Inc. | Single stage venous catheter |
US4675004A (en) | 1985-04-16 | 1987-06-23 | Quinton Instrument Company | Dual-lumen fistula needle |
US4687471A (en) | 1985-05-01 | 1987-08-18 | Curators Of The University Of Missouri | Peritoneal dialysis catheter |
DE3517813A1 (en) * | 1985-05-17 | 1986-11-20 | Jörg-Günter Dr.med. 3100 Celle Wiedeck | Ureteral stent for transurethral placement |
CA1225299A (en) | 1985-07-18 | 1987-08-11 | Chao-Liang Bai | Catheter |
US4790809A (en) | 1985-08-29 | 1988-12-13 | Medical Engineering Corporation | Ureteral stent |
US4790810A (en) | 1985-11-04 | 1988-12-13 | American Medical Systems, Inc. | Ureteral connector stent |
US4820262A (en) | 1985-12-12 | 1989-04-11 | Medical Engineering Corporation | Ureteral stent |
US4846814A (en) | 1986-01-16 | 1989-07-11 | Sherwood Medical Company | Non-whip catheter |
US4808155A (en) | 1986-02-27 | 1989-02-28 | Mahurkar Sakharam D | Simple double lumen catheter |
US4865595A (en) | 1986-02-28 | 1989-09-12 | Heyden Eugene L | Drainage device for urine |
US5769868A (en) | 1986-04-15 | 1998-06-23 | Yock; Paul G. | Angioplasty apparatus facilitating rapid exchanges |
US5061275A (en) | 1986-04-21 | 1991-10-29 | Medinvent S.A. | Self-expanding prosthesis |
US4813429A (en) | 1986-05-12 | 1989-03-21 | Biodan Medical Systems Ltd. | Catheter and probe |
US4795439A (en) | 1986-06-06 | 1989-01-03 | Edward Weck Incorporated | Spiral multi-lumen catheter |
US4713049A (en) | 1986-08-05 | 1987-12-15 | Medical Engineering Corporation | Ureteral stent kit |
US4822345A (en) | 1986-08-14 | 1989-04-18 | Danforth John W | Controllable flexibility catheter |
US4776841A (en) | 1986-09-11 | 1988-10-11 | Catalano Marc L | Bilumen peripheral venous catheter with adapter |
US4960409A (en) | 1986-09-11 | 1990-10-02 | Catalano Marc L | Method of using bilumen peripheral venous catheter with adapter |
US4747840A (en) | 1986-09-17 | 1988-05-31 | Ladika Joseph E | Selective pulmonary arteriograph catheter |
US4995863A (en) | 1986-10-06 | 1991-02-26 | Catheter Technology Corporation | Catheter with slit valve |
US4753640A (en) | 1986-10-06 | 1988-06-28 | Catheter Technology Corporation | Catheters and methods |
US5160325A (en) | 1986-10-06 | 1992-11-03 | C. R. Bard, Inc. | Catheter with novel lumens shapes |
US4738667A (en) | 1986-11-04 | 1988-04-19 | Galloway Niall T M | Preformed catheter assembly |
US4782834A (en) | 1987-01-06 | 1988-11-08 | Advanced Cardiovascular Systems, Inc. | Dual lumen dilatation catheter and method of manufacturing the same |
US4773432A (en) | 1987-02-09 | 1988-09-27 | Schneider-Shiley (Usa) Inc. | Bail-out catheter |
US4887996A (en) | 1987-02-13 | 1989-12-19 | Stig Bengmark | Method and tube equipment for supplying fluid to a space and draining said space |
FR2611486B1 (en) | 1987-02-27 | 1989-05-12 | Berberian Jean Pierre | URETRAL PROSTHESIS |
US4813925A (en) | 1987-04-21 | 1989-03-21 | Medical Engineering Corporation | Spiral ureteral stent |
US4755176A (en) | 1987-06-11 | 1988-07-05 | Patel Piyush V | Catheter with side hole |
US4894057A (en) | 1987-06-19 | 1990-01-16 | Howes Randolph M | Flow enhanced multi-lumen venous catheter device |
US5041083A (en) | 1987-06-25 | 1991-08-20 | Terumo Kabushiki Kaisha | Multi-luminal catheter, multi-luminal catheter assembly |
US5527337A (en) | 1987-06-25 | 1996-06-18 | Duke University | Bioabsorbable stent and method of making the same |
US5178803A (en) | 1987-06-25 | 1993-01-12 | Terumo Kabushiki Kaisha | Method of manufacturing a multi-luminal catheter, and multi-luminal catheter assembly |
US4769005A (en) | 1987-08-06 | 1988-09-06 | Robert Ginsburg | Selective catheter guide |
US4863442A (en) | 1987-08-14 | 1989-09-05 | C. R. Bard, Inc. | Soft tip catheter |
US4981482A (en) | 1987-08-20 | 1991-01-01 | Kazuo Ichikawa | Device for forming an inserting hole for an endoscope |
US4787884A (en) | 1987-09-01 | 1988-11-29 | Medical Engineering Corporation | Ureteral stent guidewire system |
US4998919A (en) | 1987-10-31 | 1991-03-12 | Schnepp Pesch Wolfram | Thrombectomy apparatus |
US5019102A (en) | 1987-12-10 | 1991-05-28 | Eberhard Hoene | Anti-refluxive internal ureteral stent with a dynamic hood-valve at the vesical end for prevention of urinary reflux into the upper urinary tract upon increase of vesical pressure |
US5472417A (en) | 1987-12-22 | 1995-12-05 | Vas-Cath Incorporated | Triple lumen catheter |
US6206849B1 (en) | 1987-12-22 | 2001-03-27 | Vas-Cath Incorporated | Multiple lumen catheter |
US5195962A (en) | 1987-12-22 | 1993-03-23 | Vas-Cath Incorporated | Triple lumen catheter |
US5135599A (en) | 1987-12-22 | 1992-08-04 | Vas-Cath Incorporated | Method of making a triple lumen catheter |
US4809710A (en) | 1988-01-11 | 1989-03-07 | Williamson Jeffrey L | Multilumen manometer catheter |
EP0326908A2 (en) | 1988-01-30 | 1989-08-09 | B. Braun Melsungen AG | Insertion device for urethral catheter |
US4983169A (en) | 1988-03-04 | 1991-01-08 | Yuichi Furukawa | Catheter for angiography |
EP0333308A2 (en) | 1988-03-17 | 1989-09-20 | Vas-Cath Incorporated | Dual lumen catheter |
US4978341A (en) | 1988-04-07 | 1990-12-18 | Schneider Europe | Introducer valve for a catheter arrangement |
US5188593A (en) | 1988-04-21 | 1993-02-23 | Vas-Cath Incorporated | Dual lumen catheter |
US4961809A (en) | 1988-04-21 | 1990-10-09 | Vas-Cath Incorporated | Method of producing a dual lumen catheter including forming a flare |
US5057073A (en) | 1988-04-21 | 1991-10-15 | Vas-Cath Incorporated | Dual lumen catheter |
US4895561A (en) | 1988-05-16 | 1990-01-23 | Mahurkar Sakharam D | Dual-lumen catheter-connecting system |
US4986814A (en) | 1988-06-13 | 1991-01-22 | Indianapolis Center For Advanced Research | One-punch catheter |
US4874360A (en) * | 1988-07-01 | 1989-10-17 | Medical Engineering Corporation | Ureteral stent system |
US4913683A (en) | 1988-07-05 | 1990-04-03 | Medical Engineering Corporation | Infusion stent system |
US4846791A (en) | 1988-09-02 | 1989-07-11 | Advanced Medical Technology & Development Corp. | Multi-lumen catheter |
US4963129A (en) | 1988-09-17 | 1990-10-16 | Willy Ruesch Ag | System for the drainage of body cavities |
US4995868A (en) | 1988-10-12 | 1991-02-26 | Bard Limited | Catheter |
US4931037A (en) | 1988-10-13 | 1990-06-05 | International Medical, Inc. | In-dwelling ureteral stent and injection stent assembly, and method of using same |
US5053023A (en) | 1988-10-25 | 1991-10-01 | Vas-Cath Incorporated | Catheter for prolonged access |
US5279560A (en) | 1988-11-10 | 1994-01-18 | C. R. Bard, Inc. | Balloon dilatation catheter with integral guidewire |
US5135487A (en) | 1988-11-10 | 1992-08-04 | C. R. Bard, Inc. | Balloon dilatation catheter with integral guidewire |
US5792400A (en) | 1988-11-10 | 1998-08-11 | Biocon Oy | Method of manufacturing biodegradable surgical implants and devices |
US4985022A (en) | 1988-11-23 | 1991-01-15 | Med Institute, Inc. | Catheter having durable and flexible segments |
US5116309A (en) | 1989-01-25 | 1992-05-26 | Coll Milton E | Ureteral stent-catheter system having varying diameter stent |
US5354263A (en) | 1989-01-25 | 1994-10-11 | Coll Milton E | Ureteral stent-catheter having varying diameter stent |
US5364340A (en) | 1989-01-25 | 1994-11-15 | Coll Milton E | Ureteral stent-catheter having varying internal diameter and method of use |
US5221253A (en) | 1989-01-25 | 1993-06-22 | Coll Milton E | Urological stent-catheter system having varing diameter stent |
US5346467A (en) | 1989-01-25 | 1994-09-13 | Coll Milton E | Coll-karafin ureteral stent-catheter having varying diameter stent |
US5124127A (en) | 1989-01-26 | 1992-06-23 | Shiley, Incorporated | Hollow fiber blood oxygenator |
US5240677A (en) | 1989-01-26 | 1993-08-31 | Shiley, Inc. | Hollow fiber blood oxygenator |
US5234663A (en) | 1989-01-26 | 1993-08-10 | Shiley, Inc. | Hollow fiber blood oxygenator |
US5358689A (en) | 1989-01-26 | 1994-10-25 | Shiley Incorporated | Hollow fiber blood oxygenator |
EP0386408A1 (en) | 1989-03-09 | 1990-09-12 | B. Braun Melsungen AG | Catheter |
US5242395A (en) | 1989-04-20 | 1993-09-07 | Cook Incorporated | Balloon decompression catheter |
US4994071A (en) | 1989-05-22 | 1991-02-19 | Cordis Corporation | Bifurcating stent apparatus and method |
US4995865A (en) | 1989-06-09 | 1991-02-26 | Worldwide Medical Plastics Inc. | Multi-lumen catheters |
US5045072A (en) | 1989-06-13 | 1991-09-03 | Cordis Corporation | Catheter having highly radiopaque, flexible tip |
US4973301A (en) | 1989-07-11 | 1990-11-27 | Israel Nissenkorn | Catheter and method of using same |
US5026377A (en) | 1989-07-13 | 1991-06-25 | American Medical Systems, Inc. | Stent placement instrument and method |
US5647858A (en) | 1989-07-25 | 1997-07-15 | Smith & Nephew, Inc. | Zirconium oxide and zirconium nitride coated catheters |
GB2235384A (en) | 1989-08-28 | 1991-03-06 | Thermedics Inc | Multi-lumen catheter |
US5171216A (en) | 1989-08-28 | 1992-12-15 | Thermedics, Inc. | Multi-lumen catheter coupling |
US5013296A (en) | 1989-09-21 | 1991-05-07 | Research Medical, Inc. | Antegrade cardioplegia cannula |
US5318532A (en) | 1989-10-03 | 1994-06-07 | C. R. Bard, Inc. | Multilumen catheter with variable cross-section lumens |
US5009636A (en) | 1989-12-06 | 1991-04-23 | The Kendall Company | Dual-lumen catheter apparatus and method |
US5405320A (en) | 1990-01-08 | 1995-04-11 | The Curators Of The University Of Missouri | Multiple lumen catheter for hemodialysis |
US5209723A (en) | 1990-01-08 | 1993-05-11 | The Curators Of The University Of Missouri | Multiple lumen catheter for hemodialysis |
US5569182A (en) | 1990-01-08 | 1996-10-29 | The Curators Of The University Of Missouri | Clot resistant multiple lumen catheter and method |
US5509897A (en) | 1990-01-08 | 1996-04-23 | The Curators Of The University Of Missouri | Multiple lumen catheter for hemodialysis |
US5685867A (en) | 1990-01-08 | 1997-11-11 | The Curators Of The University Of Missouri | Clot resistant multiple lumen catheter |
US5374245A (en) | 1990-01-10 | 1994-12-20 | Mahurkar; Sakharam D. | Reinforced multiple-lumen catheter and apparatus and method for making the same |
EP0554722A1 (en) | 1990-01-10 | 1993-08-11 | Sakharam Dhundiraj Mahurkar | Reinforced multiple-lumen catheter |
US5221255A (en) | 1990-01-10 | 1993-06-22 | Mahurkar Sakharam D | Reinforced multiple lumen catheter |
US4950228A (en) | 1990-01-10 | 1990-08-21 | Knapp Jr Peter M | Ureteral stent |
US5069673A (en) | 1990-02-07 | 1991-12-03 | Cordis Corporation | Catheter with double step-down bore |
US4990133A (en) | 1990-04-02 | 1991-02-05 | Tenax-Glynn Corporation | Removable J-J ureteral stent |
US5156592A (en) | 1990-04-04 | 1992-10-20 | Martin Geoffrey S | Pre-curved dual lumen catheter |
US5052998A (en) | 1990-04-04 | 1991-10-01 | Zimmon David S | Indwelling stent and method of use |
US5246445A (en) | 1990-04-19 | 1993-09-21 | Instent Inc. | Device for the treatment of constricted ducts in human bodies |
US5078720A (en) | 1990-05-02 | 1992-01-07 | American Medical Systems, Inc. | Stent placement instrument and method |
US5029580A (en) | 1990-07-18 | 1991-07-09 | Ballard Medical Products | Medical aspirating apparatus with multi-lumen catheter tube and methods |
US5053004A (en) | 1990-08-24 | 1991-10-01 | Medical Components, Inc. | Catheter having two coaxial lumens |
US5250034A (en) | 1990-09-17 | 1993-10-05 | E-Z-Em, Inc. | Pressure responsive valve catheter |
US5449372A (en) | 1990-10-09 | 1995-09-12 | Scimed Lifesystems, Inc. | Temporary stent and methods for use and manufacture |
US5190520A (en) | 1990-10-10 | 1993-03-02 | Strato Medical Corporation | Reinforced multiple lumen catheter |
US5176625A (en) | 1990-10-25 | 1993-01-05 | Brisson A Glen | Stent for ureter |
US5295954A (en) | 1990-11-20 | 1994-03-22 | Sachse Hans Ernst | Arrangement consisting of ureter tube, (stent) mandrin and auxiliary tube |
US5464398A (en) | 1990-11-27 | 1995-11-07 | Haindl; Hans | Catheter |
US5380270A (en) | 1990-12-07 | 1995-01-10 | Willy Rusch Ag | Ureteral catheter |
EP0490459B1 (en) | 1990-12-14 | 1997-02-19 | The Kendall Company | Multilumen catheter |
EP0490459A1 (en) | 1990-12-14 | 1992-06-17 | The Kendall Company | Multilumen catheter |
US5207648A (en) | 1990-12-14 | 1993-05-04 | The Kendall Company | Multilumen catheter |
US5167623A (en) | 1990-12-27 | 1992-12-01 | The Kendall Company | Multilumen catheter |
US5356423A (en) | 1991-01-04 | 1994-10-18 | American Medical Systems, Inc. | Resectable self-expanding stent |
US5405329A (en) | 1991-01-08 | 1995-04-11 | Durand; Alain J. | Intravascular multi-lumen catheter, capable of being implanted by "tunnelling" |
US5149330A (en) | 1991-01-10 | 1992-09-22 | The Kendall Company | Catheter convertible from single to multilumen |
US5330449A (en) | 1991-01-17 | 1994-07-19 | Sherwood Medical Company | Catheter strain relief device |
US5156596A (en) | 1991-02-04 | 1992-10-20 | Menlo Care, Inc. | Catheter with changeable number of lumens |
DE4103573A1 (en) | 1991-02-06 | 1992-08-20 | Wilhelm Alexander Dr Huebner | Catheter for removing obstructions from urine duct - consists of tube made of plastics material with curved inner end |
US5211627A (en) | 1991-02-12 | 1993-05-18 | C. R. Bard, Inc. | Catheter and method for infusion of aerated liquid |
US5922443A (en) | 1991-05-21 | 1999-07-13 | Larsen; Charles E. | Polymeric article, such as a medical catheter, and method for making the same |
US5147370A (en) | 1991-06-12 | 1992-09-15 | Mcnamara Thomas O | Nitinol stent for hollow body conduits |
US5129910A (en) | 1991-07-26 | 1992-07-14 | The Regents Of The University Of California | Stone expulsion stent |
US5141502A (en) | 1991-08-28 | 1992-08-25 | Macaluso Jr Joseph N | Ureteral stent |
US5292305A (en) | 1991-09-10 | 1994-03-08 | Cordis Corporation | Double-lumen angioscopy catheter |
US5269802A (en) | 1991-09-10 | 1993-12-14 | Garber Bruce B | Prostatic stent |
US5282784A (en) | 1991-10-09 | 1994-02-01 | Mentor Corporation | Injection stent system |
US5141499A (en) | 1991-10-09 | 1992-08-25 | Zappacosta Anthony R | Peritoneal dialysis catheter |
US5354309A (en) | 1991-10-11 | 1994-10-11 | Angiomed Ag | Apparatus for widening a stenosis in a body cavity |
US5540713A (en) | 1991-10-11 | 1996-07-30 | Angiomed Ag | Apparatus for widening a stenosis in a body cavity |
DE4134030A1 (en) | 1991-10-15 | 1993-04-22 | Angiomed Ag | Device for draining ureter - has thread which passes through device and is used to control its curvature |
US5372600A (en) | 1991-10-31 | 1994-12-13 | Instent Inc. | Stent delivery systems |
US5205830A (en) | 1991-11-12 | 1993-04-27 | Arrow International Investment Corporation | Catheter assembly |
US5344412A (en) | 1991-12-10 | 1994-09-06 | The Kendall Company | Microbore catheter with side port(s) |
US5176626A (en) | 1992-01-15 | 1993-01-05 | Wilson-Cook Medical, Inc. | Indwelling stent |
US5221256A (en) | 1992-02-10 | 1993-06-22 | Mahurkar Sakharam D | Multiple-lumen catheter |
US5324274A (en) | 1992-03-30 | 1994-06-28 | Med-Pro Design, Inc. | Catheter having rotary valves |
US5472432A (en) | 1992-03-30 | 1995-12-05 | Med-Pro Design, Inc. | Catheter having rotary valves |
US5649909A (en) | 1992-04-06 | 1997-07-22 | Scimed Life Systems, Inc. | Variable stiffness multi-lumen catheter |
DE4213480A1 (en) | 1992-04-24 | 1993-10-28 | Urotech Med Tech Gmbh | YJ urea catheter with three arms - has hollow arms with drainage holes running through urethra tracts and into kidneys and also into bladder |
US5569184A (en) | 1992-04-29 | 1996-10-29 | Cardiovascular Dynamics, Inc. | Delivery and balloon dilatation catheter and method of using |
US5224953A (en) | 1992-05-01 | 1993-07-06 | The Beth Israel Hospital Association | Method for treatment of obstructive portions of urinary passageways |
US5843028A (en) | 1992-05-11 | 1998-12-01 | Medical Innovations Corporation | Multi-lumen endoscopic catheter |
US5275597A (en) | 1992-05-18 | 1994-01-04 | Baxter International Inc. | Percutaneous transluminal catheter and transmitter therefor |
US5383928A (en) | 1992-06-10 | 1995-01-24 | Emory University | Stent sheath for local drug delivery |
US5342387A (en) | 1992-06-18 | 1994-08-30 | American Biomed, Inc. | Artificial support for a blood vessel |
US5520697A (en) | 1992-06-20 | 1996-05-28 | Angiomed Ag | Apparatus for correcting the position of a stent |
US5440327A (en) | 1992-07-28 | 1995-08-08 | Calcomp Inc. | Polychromatic pen for pen plotters with color mixing at media surface |
US5630794A (en) | 1992-08-12 | 1997-05-20 | Vidamed, Inc. | Catheter tip and method of manufacturing |
US5342301A (en) | 1992-08-13 | 1994-08-30 | Advanced Polymers Incorporated | Multi-lumen balloons and catheters made therewith |
US5569195A (en) | 1992-08-13 | 1996-10-29 | Saab; Mark A. | Medical balloon and method of making same |
US5261879A (en) | 1992-09-03 | 1993-11-16 | Scimed Life Systems, Inc. | Coaxial/side-by-side lumen perfusion dilatation catheter |
US5250038A (en) | 1992-10-09 | 1993-10-05 | Cook Incorporated | Multiple lumen vascular access introducer sheath |
US5405380A (en) | 1992-10-12 | 1995-04-11 | Schneider (Europe) A.G. | Catheter with a vascular support |
US5330483A (en) | 1992-12-18 | 1994-07-19 | Advanced Surgical Inc. | Specimen reduction device |
US5599291A (en) | 1993-01-04 | 1997-02-04 | Menlo Care, Inc. | Softening expanding ureteral stent |
US5860999A (en) | 1993-02-04 | 1999-01-19 | Angiomed Gmbh & Co.Medizintechnik Kg | Stent and method of using same |
US5707386A (en) | 1993-02-04 | 1998-01-13 | Angiomed Gmbh & Company Medizintechnik Kg | Stent and method of making a stent |
US5356424A (en) | 1993-02-05 | 1994-10-18 | American Cyanamid Co. | Laparoscopic suturing device |
US5766209A (en) | 1993-02-19 | 1998-06-16 | Devonec; Marian A. | Prosthesis intended for the treatment of a natural lumen or tract, in particular an endo-urethral prosthesis |
US5480380A (en) | 1993-03-16 | 1996-01-02 | Med-Pro Design, Inc. | Coaxial dual lumen catheter |
US5346471A (en) | 1993-03-22 | 1994-09-13 | Raulerson J Daniel | Dual lumen catheter |
US6371953B1 (en) | 1993-03-30 | 2002-04-16 | Intratherapeutics, Inc. | Temporary stent system |
US5964771A (en) | 1993-03-30 | 1999-10-12 | Medtronic Instent Inc. | Temporary stent system |
US5411490A (en) | 1993-04-19 | 1995-05-02 | Hyprotek, Inc. | Initialization and access system for multi-lumen central venous catheters |
US5308322A (en) | 1993-04-19 | 1994-05-03 | Tennican Patrick O | Central venous catheter access system |
US5441515A (en) | 1993-04-23 | 1995-08-15 | Advanced Cardiovascular Systems, Inc. | Ratcheting stent |
US5667486A (en) | 1993-04-27 | 1997-09-16 | Ams Medinvent, S.A. | Prostatic stent |
US5401257A (en) | 1993-04-27 | 1995-03-28 | Boston Scientific Corporation | Ureteral stents, drainage tubes and the like |
US5562641A (en) | 1993-05-28 | 1996-10-08 | A Bromberg & Co. Ltd. | Two way shape memory alloy medical stent |
US5405341A (en) | 1993-06-03 | 1995-04-11 | Med-Pro Design, Inc. | Catheter with multiple lumens |
US5391196A (en) | 1993-06-18 | 1995-02-21 | Devonec; Marian | Method for therapeutic treatment of an obstructed natural canal |
US5514178A (en) | 1993-06-24 | 1996-05-07 | Synthelabo | Prosthesis for bodily canal |
US5360397A (en) | 1993-07-02 | 1994-11-01 | Corvita Corporation | Hemodiaylsis catheter and catheter assembly |
US5366464A (en) | 1993-07-22 | 1994-11-22 | Belknap John C | Atherectomy catheter device |
US5348536A (en) | 1993-08-02 | 1994-09-20 | Quinton Instrument Company | Coextruded catheter and method of forming |
US5403291A (en) | 1993-08-02 | 1995-04-04 | Quinton Instrument Company | Catheter with elongated side holes |
US5451206A (en) | 1993-08-02 | 1995-09-19 | Quinton Instrument Company | Triple lumen catheter |
US5489278A (en) | 1993-08-02 | 1996-02-06 | Quinton Instrument Company | Catheter with elongated side openings |
US5395316A (en) | 1993-08-11 | 1995-03-07 | Med-Pro Design, Inc. | Triple lumen catheter |
US5514100A (en) | 1993-08-23 | 1996-05-07 | Mahurkar; Sakharam D. | Hypodermic needle assembly |
US5643222A (en) | 1993-08-23 | 1997-07-01 | Mahurkar; Sakharam D. | Hypodermic needle assembly |
US5338311A (en) | 1993-08-23 | 1994-08-16 | Mahurkar Sakharam D | Hypodermic needle assembly |
US5685862A (en) | 1993-08-23 | 1997-11-11 | Mahurkar; Sakharam D. | Hypodermic needle assembly |
DE9314585U1 (en) | 1993-09-27 | 1994-01-27 | Urotech medizinische Technologie GmbH, 83052 Bruckmühl | Ureteral splint |
US5486159A (en) | 1993-10-01 | 1996-01-23 | Mahurkar; Sakharam D. | Multiple-lumen catheter |
US5639278A (en) | 1993-10-21 | 1997-06-17 | Corvita Corporation | Expandable supportive bifurcated endoluminal grafts |
US5364344A (en) | 1993-10-22 | 1994-11-15 | The Kendall Company | Dual lumen catheter |
US5378230A (en) | 1993-11-01 | 1995-01-03 | Mahurkar; Sakharam D. | Triple-lumen critical care catheter |
US5695479A (en) | 1993-11-01 | 1997-12-09 | Jagpal; Ravindar | Instrument, system, kit and method for catheterization procedures |
US5554147A (en) * | 1994-02-01 | 1996-09-10 | Caphco, Inc. | Compositions and devices for controlled release of active ingredients |
US5609627A (en) | 1994-02-09 | 1997-03-11 | Boston Scientific Technology, Inc. | Method for delivering a bifurcated endoluminal prosthesis |
US5683640A (en) | 1994-02-28 | 1997-11-04 | The Kendall Company | Method of making dual lumen catheters |
US5380276A (en) | 1994-02-28 | 1995-01-10 | The Kendall Company | Dual lumen catheter and method of use |
US5599306A (en) | 1994-04-01 | 1997-02-04 | Localmed, Inc. | Method and apparatus for providing external perfusion lumens on balloon catheters |
WO1995026763A1 (en) | 1994-04-04 | 1995-10-12 | Loggie Brian W | Multi-lumen catheter system |
US5470322A (en) | 1994-04-15 | 1995-11-28 | Danforth Biomedical Inc. | Reinforced multilumen catheter for axially varying stiffness |
US5454790A (en) | 1994-05-09 | 1995-10-03 | Innerdyne, Inc. | Method and apparatus for catheterization access |
US5399172A (en) | 1994-06-21 | 1995-03-21 | Med-Pro Design, Inc. | Catheter having ganged rotary valves |
WO1995035130A1 (en) | 1994-06-23 | 1995-12-28 | Med-Pro Design, Inc. | Catheter having ganged rotary valves |
US5531741A (en) | 1994-08-18 | 1996-07-02 | Barbacci; Josephine A. | Illuminated stents |
US5522807A (en) | 1994-09-07 | 1996-06-04 | Luther Medical Products, Inc. | Dual lumen infusion/aspiration catheter |
US5554136A (en) | 1994-09-07 | 1996-09-10 | Luther Medical Products, Inc. | Dual lumen infusion/aspiration catheter |
US5723003A (en) | 1994-09-13 | 1998-03-03 | Ultrasonic Sensing And Monitoring Systems | Expandable graft assembly and method of use |
US5571093A (en) | 1994-09-21 | 1996-11-05 | Cruz; Cosme | Multiple-lumen catheter |
US5906640A (en) | 1994-11-03 | 1999-05-25 | Divysio Solutions Ulc | Bifurcated stent and method for the manufacture and delivery of same |
US5573508A (en) | 1994-11-22 | 1996-11-12 | Advanced Cardiovascular Systems, Inc. | Catheter with an expandable perfusion lumen |
US5700286A (en) | 1994-12-13 | 1997-12-23 | Advanced Cardiovascular Systems, Inc. | Polymer film for wrapping a stent structure |
US5613980A (en) | 1994-12-22 | 1997-03-25 | Chauhan; Tusharsindhu C. | Bifurcated catheter system and method |
US5674277A (en) | 1994-12-23 | 1997-10-07 | Willy Rusch Ag | Stent for placement in a body tube |
US5514176A (en) | 1995-01-20 | 1996-05-07 | Vance Products Inc. | Pull apart coil stent |
US5624395A (en) | 1995-02-23 | 1997-04-29 | Cv Dynamics, Inc. | Urinary catheter having palpitatable valve and balloon and method for making same |
US5868718A (en) | 1995-03-02 | 1999-02-09 | Scimed Life Systems, Inc. | Process to form dimensionally variable tubular members for use in catheter procedures |
US5556390A (en) | 1995-03-07 | 1996-09-17 | Quinton Instrument Company | Catheter with oval or elliptical lumens |
US5681274A (en) | 1995-03-31 | 1997-10-28 | Boston Scientific Corporation | Variable length uretheral stent |
US5876417A (en) | 1995-07-10 | 1999-03-02 | Devonec; Marian | Detachable catheter apparatus |
US5830196A (en) | 1995-09-21 | 1998-11-03 | Tyco Group S.A.R.L. | Tapered and reinforced catheter |
WO1997010858A1 (en) | 1995-09-21 | 1997-03-27 | Quinton Instrument Company | Tapered and reinforced catheter |
US5653689A (en) | 1995-09-30 | 1997-08-05 | Abacus Design & Development, Inc. | Infusion catheter |
US5776161A (en) | 1995-10-16 | 1998-07-07 | Instent, Inc. | Medical stents, apparatus and method for making same |
US6656146B1 (en) | 1995-11-07 | 2003-12-02 | Scimed Life Systems, Inc. | Medical device with tail(s) |
WO1997017094A1 (en) | 1995-11-07 | 1997-05-15 | Boston Scientific Corporation | Ureteral stent with small bladder tail(s) |
US6283991B1 (en) | 1995-12-01 | 2001-09-04 | Medtronics Inc. | Endoluminal prostheses and therapies for highly variable body lumens |
US5624413A (en) | 1996-02-23 | 1997-04-29 | Medical Components, Inc. | Method for inserting a multiple catheter assembly |
US5830184A (en) | 1996-03-06 | 1998-11-03 | Medical Components, Inc. | Composite catheter stabilizing devices, methods of making the same and catheter extracting device |
US5928217A (en) | 1996-04-09 | 1999-07-27 | Endocare, Inc. | Urological stent therapy system and method |
US5830179A (en) | 1996-04-09 | 1998-11-03 | Endocare, Inc. | Urological stent therapy system and method |
US6139536A (en) | 1996-04-09 | 2000-10-31 | Endocare, Inc. | Urological stent therapy system and method |
WO1997037718A1 (en) | 1996-04-10 | 1997-10-16 | Biolink Corporation | Dual-lumen catheter and method of use |
WO1997037699A1 (en) | 1996-04-11 | 1997-10-16 | Sherwood Medical Company | Triple lumen catheter |
EP0806189A1 (en) | 1996-05-10 | 1997-11-12 | Variomed AG | Device for draining with drainage tube |
US5647843A (en) | 1996-05-24 | 1997-07-15 | Vance Products Incorporated | Anti-reflux ureteral stent |
US5814006A (en) | 1996-05-28 | 1998-09-29 | Planz; Konrad | Temporary stent in the urine path |
US6197014B1 (en) | 1996-05-30 | 2001-03-06 | Target Therapeutics, Inc. | Kink-resistant braided catheter with distal side holes |
US5676697A (en) | 1996-07-29 | 1997-10-14 | Cardiovascular Dynamics, Inc. | Two-piece, bifurcated intraluminal graft for repair of aneurysm |
US5792105A (en) | 1996-09-11 | 1998-08-11 | Boston Scientific Corporation | Multichannel balloon catheter for delivering fluid |
US5795326A (en) | 1997-01-29 | 1998-08-18 | Baxter International Inc. | Double lumen tubing design for catheter |
US6395021B1 (en) | 1997-02-26 | 2002-05-28 | Applied Medical Resources Corporation | Ureteral stent system apparatus and method |
US5795319A (en) | 1997-03-07 | 1998-08-18 | Circon Corporation | Easily removable ureteral stent |
US5865815A (en) | 1997-04-25 | 1999-02-02 | Contimed, Inc. | Prostatic obstruction relief catheter |
EP0876803A3 (en) | 1997-05-08 | 1999-04-28 | C.R. Bard, Inc. | TMR stent and delivery system |
US6248100B1 (en) | 1997-08-14 | 2001-06-19 | Scimed Life Systems, Inc. | Drainage catheter delivery system |
US6033413A (en) | 1998-04-20 | 2000-03-07 | Endocare, Inc. | Stent delivery system |
US6258098B1 (en) | 1998-05-08 | 2001-07-10 | William N. Taylor | Stent placement and removal system |
US6306105B1 (en) | 1998-05-14 | 2001-10-23 | Scimed Life Systems, Inc. | High performance coil wire |
US6332892B1 (en) | 1999-03-02 | 2001-12-25 | Scimed Life Systems, Inc. | Medical device with one or more helical coils |
US6146396A (en) | 1999-03-05 | 2000-11-14 | Board Of Regents, The University Of Texas System | Declotting method and apparatus |
US6334868B1 (en) | 1999-10-08 | 2002-01-01 | Advanced Cardiovascular Systems, Inc. | Stent cover |
US6569150B2 (en) | 2000-04-11 | 2003-05-27 | Scimed Life Systems, Inc. | Reinforced retention structures |
US20010053936A1 (en) | 2000-05-26 | 2001-12-20 | Whitmore Willet F. | Ureteral stent |
US6558350B1 (en) | 2000-06-20 | 2003-05-06 | Applied Medical Resources Corp. | Drainage catheter |
US6450987B1 (en) | 2001-02-01 | 2002-09-17 | Innercool Therapies, Inc. | Collapsible guidewire lumen |
US6676623B2 (en) | 2001-05-04 | 2004-01-13 | Scimed Life Systems, Inc. | Drainage devices and methods |
Non-Patent Citations (45)
Title |
---|
"Triple Lumen Catheter" p. 3 (First! An Information Service of Individual, Inc., Sep. 25, 1995). |
"Ureteroscopic Procedures-Technical Advances," Color Atlas/Text of Ureteroscopy, 1993 New York, Igaku-Shoin, p. 281. |
Bard Access Systems Vas-Cath Incorporated Catalog, date unknown. |
Bard brochure, "Introducing The Bard Urinary Diversion Stent," 1984. |
Bard product brochure, "Introducing The Bard Pediatric Urethral Stent," 1983. |
Bard product brochure, "Stents To Satisfy The Urologist: . . . ", 1988. |
Bard Urological Division product catalog, 1990, (pp. 1-3, A1-A30, D7-D26; last page). |
Bard/angiomed product brochure, 1988. |
Bigongiari et al., "Conversion of Percutaneous Ureteral Stent To Indwelling Pigtail Stent Over Guidewire," Urology, May 1980, vol. XV, No. 5, (pp. 461-465). |
Birch et al., "Tethered Ureteric Stents-a Clinical Assessment," British Journal of Urology, 1988, 62, (pp. 409-411). |
Camacho et al. "Double-Ended Pigtail Ureteral Stent: Useful Modifcation to Single End Ureteral Stent," Urology, May 1979, vol. XIII, No. 5, (pp. 516-520). |
Collier et al., "Proximal Stent Displacement As Complication of Pigtail Ureteral Stent," Urology, Apr. 1979, vol. XIII, No. 4, (pp. 372-375). |
Cook Critical Care Catalog, "Products for Dialysis" pp. 3-15 (1989). |
Cook Critical Care Catalog, "Uldall Double Lumen Hemodialysis Catheter Trays", date unknown. |
Cook Urological catalog, "Urological Surgical Product," 1990-1991, (pp. 1-3,7-29, 48-148; last page). |
Cook Urological Catalog, 1995, (pp. 1-2, 9-41, 63-173; last page). |
Cook Urological product brochure, "Filiform Ureteral Multi-Length Silicone Stent Sets," 1989. |
Cook Urological product brochure, "Ureteral Stents," 1987, (pp. 1-12; last page). |
Culkin, "Complications of Ureteral Stents," Infections in Urology, Sep./Oct. 1996, (pp. 139-143). |
Hackethorn et al., "Antegrade Internal Ureteral Stenting: A Technical Refinement," Radiology, Jul. 1985, vol. 156, No. 3, (pp. 827-828). |
Hepperlen et al., "Self-Retained Internal Ureteral Stents: A New Approach," The Journal of Urology, Jun. 1978, vol. 119, (pp. 731-734). |
Horizon Medical Products Catalog, date unknown. |
International Search Report for International Patent Application No. PCT/US02/13918, dated Oct. 9, 2002, 5 pgs. |
International Search Report for International Patent Application No. PCT/US03/11879, dated Dec. 23, 2003. |
Mardis et al., "Comparative Evaluation of Materials Used for Internal Ureteral Stents," Journal of Endourology, 1993, vol. 7, No. 2, (pp. 105-115). |
Mardis et al., "Double Pigtail Ureteral Stent," Urology, Jul. 1979, vol. XIV, No. 1, (pp. 23-26). |
Mardis et al., "Guidewires, Ureteral Catheters, and Stents," Color Atlas/Text of Ureteroscopy, New York, Igaku-Shoin, Ch. 5, (pp. 65-84). |
Mardis et al., "Polythylene Double-Pigtail Ureteral Stents," Urologic Clinics of North America, Feb. 1982, vol. 9, No. 1, (pp. 95-101). |
Mardis et al., "Ureteral Stents Use and Complications," Problems in Urology, Jun. 1992, vol. 6, No. 2, (pp. 296-306). |
Mardis et al., "Ureteral Stents-Materials," Urologic Clinics of North America, Aug. 1988, vol. 15, No. 3, (pp. 471-479). |
Mardis, "Evaluation of Polymeric Materials for Endourologic Devices," Seminars in Interventional Radiology, Mar. 1987, vol. 4, No. 1, (pp. 36-45). |
McIntosh, et al. "Double Lumen Catheter For Use With Artificial Kidney," J.A.M.A. 169(8): 137-8(1959). |
MEDCOMP Catalog "Schon Twin-Cath", date unknown. |
MEDCOMP Catalog, "Hemodialysis Products" pp. 1-11, 14-16, 19-27, 30-36, date unknown. |
Minkov et al., "Our Experience in the Application of the Biocompatible Indwelling Ureteral Stents," International Urology and Nephrology, 1986, 18 (4), (pp. 403-409). |
Quinton Instrument Co. Catalog, " Hemodialysis and Apheresis" (1995). |
Quinton Instrument Co. Catalog, "Hemodialysis and Apheresis" (1994). |
Quinton Instrument Co. Catalog, "Oncology/Critical Care" (1993). |
Riesenfeld, et al. "Surface Modification of Functionally Active Heparin," Medical Device Technology (Mar. 1995). |
Rutner et al., "Percutaneous Pigtail Nephrostomy," Urology, Oct. 1979, vol. XIV, No. 4, (pp. 337-340). |
Sadlowski et al., "New Technique For Precutaneous Nephrostomy Under Ultrasound Guidance," Journal of Urology, May 1979, vol. 121, (pp. 559-561). |
Stables, "Percutaneous Nephrostomy: Techniques, Indications, and Results," Urologic Clinics of North America, Feb. 1982, vol. 9, No. 1, (pp. 15-29). |
Surgitek brochure, "The Solution Is Perfectly Clear," 1990. |
U.S. Appl. No. 08/743,885, filed Nov. 6, 1996, Clayman et al. |
U.S. Appl. No. 10/406,876, filed Apr. 4, 2003, McWeeney et al. |
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US7678154B2 (en) * | 1995-11-07 | 2010-03-16 | Boston Scientific Scimed, Inc. | Ureteral stent for improved patient comfort |
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US8246689B2 (en) * | 1995-11-07 | 2012-08-21 | Mcweeney John O | Ureteral stent for improved patient comfort |
US20130024003A1 (en) * | 1995-11-07 | 2013-01-24 | Boston Scientific Scimed, Inc. | Ureteral stent for improved patient comfort |
US20090054874A1 (en) * | 2007-08-23 | 2009-02-26 | C. R. Bard, Inc. | Multi-lumen catheter including a lumen having a variable cross sectional area |
US20090143849A1 (en) * | 2007-12-03 | 2009-06-04 | Olympus Medical Systems Corp. | Stent delivery system, stent placement method, and stent attachment method |
US8298276B2 (en) * | 2007-12-03 | 2012-10-30 | Olympus Medical Systems Corp. | Stent delivery system, stent placement method, and stent attachment method |
US11439493B2 (en) | 2008-09-15 | 2022-09-13 | Merit Medical Systems, Inc. | Convertible nephroureteral catheter |
US10695161B2 (en) | 2008-09-15 | 2020-06-30 | Merit Medical Systems, Inc. | Convertible nephroureteral catheter |
US9387312B2 (en) | 2008-09-15 | 2016-07-12 | Brightwater Medical, Inc. | Convertible nephroureteral catheter |
US8491541B2 (en) | 2008-09-30 | 2013-07-23 | Covidien Lp | Ball-valve actuation mechanism |
US20100082016A1 (en) * | 2008-09-30 | 2010-04-01 | Tyco Healthcare Group Lp | Ball-Valve Actuation Mechanism |
US20100152861A1 (en) * | 2008-12-12 | 2010-06-17 | Chung Steven Y | Ureteral Stent |
US8192500B2 (en) | 2008-12-12 | 2012-06-05 | Boston Scientific Scimed, Inc. | Ureteral stent |
US9271823B2 (en) | 2008-12-12 | 2016-03-01 | Boston Scientific Scimed, Inc. | Ureteral stent |
US8512272B2 (en) | 2008-12-22 | 2013-08-20 | Boston Scientific Scimed, Inc. | Ureteral stent |
US9066823B2 (en) | 2008-12-22 | 2015-06-30 | Boston Scientific Scimed, Inc. | Ureteral stent |
US20100160848A1 (en) * | 2008-12-22 | 2010-06-24 | Isaac Ostrovsky | Ureteral Stent |
US9504553B2 (en) | 2008-12-22 | 2016-11-29 | Boston Scientific Scimed, Inc. | Ureteral stent |
US9956100B2 (en) | 2009-09-15 | 2018-05-01 | Brightwater Medical, Inc. | Systems and methods for coupling and decoupling a catheter |
US8449512B2 (en) | 2010-04-09 | 2013-05-28 | Davinci Biomedical Research Products Inc. | Stoma stabilitating device and method |
US8920513B2 (en) | 2010-08-27 | 2014-12-30 | Thomas W. Rickner | Anti-refluxive and trigone sparing internal ureteral stent |
DE202012011024U1 (en) | 2012-11-16 | 2013-03-04 | Urotech Medizinische Technologie Gmbh | Ureteral stent |
US10722391B2 (en) | 2014-08-12 | 2020-07-28 | Merit Medical Systems, Inc. | Systems and methods for coupling and decoupling a catheter |
US11931275B2 (en) | 2014-08-12 | 2024-03-19 | Merit Medical Systems, Inc. | Systems and methods for coupling and decoupling a catheter |
US10278806B2 (en) | 2017-02-27 | 2019-05-07 | Baylor University | Ureteral stent and method |
US11039914B2 (en) | 2018-10-22 | 2021-06-22 | Sevro Technologies Llc | Variable length stent |
US12226327B2 (en) | 2020-04-15 | 2025-02-18 | Merit Medical Systems, Inc. | Systems and methods for coupling and decoupling a catheter |
Also Published As
Publication number | Publication date |
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US20060122707A1 (en) | 2006-06-08 |
US20040059279A1 (en) | 2004-03-25 |
US8246689B2 (en) | 2012-08-21 |
US8845752B2 (en) | 2014-09-30 |
US7678154B2 (en) | 2010-03-16 |
US20130024003A1 (en) | 2013-01-24 |
US20100198358A1 (en) | 2010-08-05 |
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