CN107898484A - Surgical instruments - Google Patents
Surgical instruments Download PDFInfo
- Publication number
- CN107898484A CN107898484A CN201710115443.9A CN201710115443A CN107898484A CN 107898484 A CN107898484 A CN 107898484A CN 201710115443 A CN201710115443 A CN 201710115443A CN 107898484 A CN107898484 A CN 107898484A
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- China
- Prior art keywords
- resist
- cutter
- nailed seat
- supporting part
- staple cartridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009527 percussion Methods 0.000 claims abstract description 12
- 230000004044 response Effects 0.000 claims abstract description 9
- 230000003247 decreasing effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 210000000959 ear middle Anatomy 0.000 claims description 6
- 238000010304 firing Methods 0.000 description 10
- 239000012636 effector Substances 0.000 description 9
- 238000001356 surgical procedure Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002357 laparoscopic surgery Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 208000025309 Hair disease Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 208000034653 disorder of pilosebaceous unit Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002674 endoscopic surgery Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07271—Stapler heads characterised by its cartridge
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07278—Stapler heads characterised by its sled or its staple holder
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07285—Stapler heads characterised by its cutter
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of surgical instruments, including：Staple cartridge tray, it is used to be operably supported the nail bin being located therein；Resist-nailed seat, it is pivotably connected to the staple cartridge tray, and the resist-nailed seat has the resist-nailed seat groove being located therein；Cutter, its relatively described staple cartridge tray is operably supported, including supporting part, when the resist-nailed seat is in the close position, the supporting part enters the resist-nailed seat groove, and may be in response to the percussion force that is applied on the cutter or withdrawal force moves in the resist-nailed seat groove；The supporting part includes the lug extended from the main body of the cutter to opposite sides, and the lug includes free end and is connected to the root of the cutter main body, and the thickness of the lug is successively decreased from root to free end.Because of above-mentioned setting so that in the case where resist-nailed seat slot space is limited, effectively increases the bearing capacity of lug, make it avoid being broken because bearing huge pulling force.
Description
Technical field
The present invention relates to a kind of surgical instruments, more particularly to a kind of surgical stapling and cutting device.
Background technology
With the development of medical science and technology, endoscope and laparoscopic surgery due to operative incision is small, post-operative recovery time is short, simultaneously
Hair disease waits many advantages and is gradually promoted and popularizes less.In laparoscopic surgery, held by small notch in the inside in abdominal cavity
Row operation.Similarly, in endoscopic surgery, by the endoscope tube via the small notch insertion in skin in any of body
Operation is performed in hollow viscus.
Relevant surgical instruments is developed rapidly in this context, wherein, surgery suturing appliance is a kind of replacement hand
Work suture equipment, it is suitable for by the casing of the pinpoint puncture outfit of operative site enter human body in, then in group
Knit middle manufacture longitudinal cut and apply staple in the opposite side of notch, so as to carry out detachment to tissue and coincide, similar to stapler
Machine.Surgery suturing appliance includes the jaw member of a pair of of cooperating, and one in jaw member be staple cartridge tray, for receiving nail
Storehouse.Another in jaw member is resist-nailed seat, and resist-nailed seat has the resist-nailed seat groove being located therein.Surgery suturing appliance further includes
Cutter, cutter are operably supported with respect to staple cartridge tray, and the cutter include supporting part, when the jaw member closes
When, which enters in the resist-nailed seat groove of resist-nailed seat, and may be in response to be applied to the percussion force on cutter in resist-nailed seat groove
It is interior to be moved from non-firing position to firing position.
Due to for operative site it is different, the tissue thickness of required clamping also changes correspondingly in jaw member.At some
In the case of inevitable, the very big tissue of clamping thickness is needed in the jaw member of surgery suturing appliance, thicker is organized in
The reaction force of resistance closure function is produced in jaw so that resist-nailed seat has the trend for reversely pivoting to open jaw, causes to prop up
Bearing portion bears the huge pulling force from resist-nailed seat groove, easily causes fracture, once fracture occurs, cutter are difficult to desired guiding trajectory
Promote, gently then influence surgical effect, it is heavy then trigger malpractice.
In view of this, it is necessary to the defects of for the prior art, improvement is made to the supporting part of cutter, it is strong to improve
Degree, reduces risk of breakage.
The content of the invention
The present invention is intended to provide a kind of improved surgical instruments, it can increase the intensity of supporting part, avoid supporting part from existing
Fracture occurs in surgical procedure and occurs unexpected.The concrete technical scheme of the present invention is as follows：
A kind of surgical instruments of the present invention, including：Staple cartridge tray, it is used to be operably supported the nail bin being located therein；Support
Nail seat, it is pivotably connected to the staple cartridge tray, and optionally moves between the open and the closed positions, described to support
Nail seat has the resist-nailed seat groove being located therein；Cutter, its relatively described staple cartridge tray is operably supported, including supporting part,
When the resist-nailed seat is in the close position, the supporting part enters the resist-nailed seat groove, and may be in response to be applied to described cut
Percussion force or withdrawal force on cutter move in the resist-nailed seat groove；The supporting part include from the main bodys of the cutter to
The lug of opposite sides extension, the lug include free end and are connected to the root of the cutter main body, the lug
Thickness is successively decreased from root to free end.
Because being using above-mentioned technical proposal, beneficial effects of the present invention：Because of the setting of ledge arrangement so that in resist-nailed seat groove
In the case that space is limited, effectively increases the intensity of lug, make it avoid being broken because bearing huge pulling force.
As a further refinement of the present invention, the supporting part includes the top surface of two lug free ends of connection,
The top surface is parabola.The top surface of supporting part is the one side away from chucking power suffered by lug, and top surface is parabola so that supporting
The bending stress that portion is subject to along each section of Impact direction is identical, ensures the uniform intensity distribution of supporting part.
As a further refinement of the present invention, the supporting part includes the top surface of two lug free ends of connection,
The top surface is arc surface.The top surface of supporting part is the one side away from pulling force suffered by lug, and top surface is arc surface so that supporting part
The bending stress being subject to along each section of Impact direction is identical, ensures the uniform intensity distribution of supporting part, and is easier
Machine-shaping.
As a further refinement of the present invention, the lug has the bottom surface of the relatively close staple cartridge tray and away from described
The back side of staple cartridge tray, the back side are inclined-plane.Ramp structure is simple, easily processed into type.
As a further refinement of the present invention, the lug has the bottom surface of the relatively close staple cartridge tray and away from described
The back side of staple cartridge tray, the bottom surface are equipped with fillet close to the position of the root.The design of fillet is also to solve stress concentration
Problem, further increases the intensity of lug root.
As a further refinement of the present invention, the resist-nailed seat groove is matched somebody with somebody with the supporting part phase shape.Supporting part is contained in
In resist-nailed seat groove, both shapes with can avoid rocking, prevented also from dust and other impurities enter resist-nailed seat groove and influence supporting part to
The smooth degree moved in nail seat groove.
As a further refinement of the present invention, the material of the supporting part is stainless steel.On the basis of improved structure,
It is preferred that stainless steel material, can be such that the intensity of supporting part is further lifted.
As a further refinement of the present invention, the staple cartridge tray has channel slot formed therein, the channel slot
It is oppositely arranged for straight slot and with the resist-nailed seat groove.Staple cartridge tray provides support by channel slot to cutter.
As a further refinement of the present invention, the cutter further include Access Division, the Access Division is connected in described
Channel slot, and may be in response to the percussion force that is applied on the cutter or withdrawal force moves in the channel slot.Cutter
On Access Division be connected in straight slot, easy to the bidirectionally limited cutter in the folding of resist-nailed seat.
As a further refinement of the present invention, the Access Division includes spaced foot and middle ear, the foot
Extend with middle ear by the cutter main body to two opposite side directions, the Access Division is in I-shaped.Access Division is by passage
The both sides of groove are housed into I-shaped receiving space, so as to be clamped with channel slot, to be moved along channel slot.
To sum up, surgical instruments according to the present invention, the supporting part of its cutter improve intensity by the improvement of structure, can
Effectively to avoid that the accident of supporting part fracture occurs in surgical procedure, prevent the generation of malpractice.
Brief description of the drawings
Fig. 1 is the front view of the surgical instruments of the preferred embodiment of the present invention；
Fig. 2 is the partial sectional view of the surgical instruments shown in Fig. 1；
Fig. 3 is the schematic diagram of the staple cartridge tray of the jaw member shown in Fig. 2；
Fig. 4 is the schematic diagram of the resist-nailed seat of the jaw member shown in Fig. 2；
Fig. 5 is the front view of an embodiment of the cutter shown in Fig. 2；
Fig. 6 is the schematic perspective view of the another embodiment of the cutter shown in Fig. 2.
Embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings.In retouching for the present invention
In stating, it is to be understood that term " " center ", " longitudinal axis ", " transverse direction ", " length ", " width ", " thickness ", " on ",
" under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " clockwise ", " counterclockwise ",
The orientation or position relationship of the instruction such as " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings or position relationship.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining the present invention, without being understood that
For limitation of the present invention.
Shown in Figure 1, the surgical instruments 100 that a preferred embodiment of the present invention provides includes surgical stapling and cutter
Tool.Specifically, surgical instruments 100 includes Handleset 1, from the shaft member 2 of 1 Longitudinal extending of Handleset and is arranged at shaft
The end effector 3 of 2 one end of component.It should be noted that spatial terminology such as " vertical ", " level ", " right side ", " left side " etc.
Provided herein with reference to attached drawing 1, the longitudinal axis of setting surgical instruments 100 is coaxial with the central axis of shaft member 2, and closes
Close trigger 14 and firing trigger 16 is extended downwardly from the bottom of Handleset 1 is at an acute angle.However, in practical applications, outside
Section's apparatus 100 can be directed into various angles.Further, terms used herein " nearside " and " distal side " are relative to manipulation
For the clinician of the Handleset 1 of surgical instruments 100.Term " nearside " refers to close to the part of clinician, term
" distal side " then refers to the part away from clinician.That is, Handleset 1 is nearside, and end effector 3 is distal side, as some zero
The proximal end of component represents one end of relatively close Handleset 1, and distal end portion then represents the one of relatively close end effector 3
End.
With reference to shown in Fig. 1 and Fig. 2, closure trigger 14 can be manipulated to position and close end effector 3, and end performs
Device 3 is connected to the distal end portion of shaft member 2.End effector 3 includes staple cartridge tray 32 and is pivotably connected to staple cartridge tray 32
Resist-nailed seat 34, staple cartridge tray 32 are used to be operably supported the nail bin (not shown) being located therein, and resist-nailed seat 34 can opened
Optionally moved between position and closing position.Closure trigger 14 is pressed towards the pistol grip 12 of Handleset 1, can
Shaft member 2 is promoted so that resist-nailed seat 34 pivots and then closed end portion actuator 3.In a preferred embodiment, surgical instruments
100 further include release button 18, closure trigger 14 can be discharged by operating release button 18, so as to open end effector
3 to readjust, promptly and position tissue.When pending tissue is entered between staple cartridge tray 32 and resist-nailed seat 34, surgery
Doctor can press closure trigger 14 until being locked, so that resist-nailed seat 34 is in the close position, i.e. end effector 3
In closure state.
With continued reference to Fig. 1 and Fig. 2, end effector 3 further includes cutter 24, and cutter 24 are relative to staple cartridge tray 32 by can
It is operatively supported, specific in present embodiment, cutter 24 include opposite proximal end and distal end portion, wherein, cutter 24
Proximal end be connected with the trigger shaft 26 being arranged in shaft member 2, and the distal end portion of cutter 24 is connected to by staple cartridge tray
32 and the jaw member that forms of resist-nailed seat 34 in, and the other end of jaw member can be moved to from one end of jaw member.On
The proximal end of cutter 24 and the connection mode of trigger shaft 26, and position and connection relation of the trigger shaft 26 with shaft member 2,
It is same as the prior art or close, it is not elaborated herein.In short, cutter 24 can be subject to be transmitted by firing trigger 16
Percussion force, and cutter 24 is moved by non-firing position firing position distad；Can also be in response to being applied to cutting
Withdrawal force on knife 24 is retracted into non-firing position by firing position.Percussion force, can be by turning to button 19 to the conversion of withdrawal force
Realize, it is same same as the prior art or similar as the structure and working method for turning to button 19, also repeat no more.Need to note
Meaning, the percussion campaign of cutter 24 and retraction movement must just allow to occur in the case where jaw member closes, i.e., only
Have when closure trigger 14 is locked on pistol grip 12 so that resist-nailed seat 34 is in the close position, can just activate and hit
Trigger 16 is sent out, to prevent from triggering cutter 24 to cut non-targeted group due to pressing firing trigger 16 accidentally in surgical procedure
The accident knitted.Similarly, the function of preventing firing trigger 16 from surprisingly being touched is realized as which kind of structure, the prior art is
There are announcement or enlightenment, details are not described herein again.
It refer to and introduce the distal end portion of cutter 24 and the connection of jaw member and cooperation shown in attached drawing 2-4 below
Relation.Staple cartridge tray 32 has the channel slot 322 being located therein, and the downside of 24 distal end portion of cutter is (based on the position shown by attached drawing 2
For putting relation) it is placed in channel slot 322；Correspondingly, resist-nailed seat 34 has the resist-nailed seat groove 342 being located therein, and works as jaw
When component closes, the upside of 24 distal end portion of cutter enters in resist-nailed seat groove 342 so that cutter 24 can be along upper and lower both sides
Slit movement so that distad end cutting pending tissue.At the same time, the nail bin in staple cartridge tray 32 (does not show in figure
Go out) driven by the cutter 24 of distal motion, staple (not shown) therein be cut knife 24 against wedge shape push away
Released into device (not shown), tissue to be stapled is penetrated, because the distance between staple cartridge tray 32 and resist-nailed seat 34 are less than staple
Height, the nib contacts resist-nailed seat 34 of staple support nail face 346 after be bent, and support 346 shape of nail face along resist-nailed seat 34
Into specific shape, so as to fulfill the suture of cut tissue.
With reference to shown in Fig. 2, Fig. 5 and Fig. 6, cutter 24 include supporting part 242, i.e. the upside of 24 distal end portion of cutter is equipped with
Supporting part 242, by supporting part 242, the upside of 24 distal end portion of cutter can enter when resist-nailed seat 34 is in the close position to be supported
Nail seat groove 342, and may be in response to the percussion force that is applied on the cutter 24 or withdrawal force moves in resist-nailed seat groove 342.
In the present embodiment, resist-nailed seat 34 includes inlet slot 344, and the width of inlet slot 344 is more than the width of resist-nailed seat groove 342, when to
When nail seat 34 is in an open position, supporting part 242 be accommodated in it is in inlet slot 344 and spacing by the position-limited edge of inlet slot 344, with
Cutter 24 are avoided to be distally moved in the case where jaw member is not closed.And when resist-nailed seat 34 is switched to closing position,
Resist-nailed seat groove 342 is opposite to be moved down, and supporting part 242 enters in resist-nailed seat groove 342.
With continued reference to shown in Fig. 5 and Fig. 6, cutter 24 include E types main body 241, supporting part 242 include autonomous agent 241 to
The lug 2421 of opposite sides extension, lug 2421 include free end 2421a and are connected to the root of 24 main body 241 of cutter
2421b.In surgical procedure, only after pending tissue enters jaw member, surgeon can just press closure trigger
14 make resist-nailed seat 34 in the close position, i.e. end effector 3 is in closure state, and position or thickness due to pending tissue
Degree is different, and the required chucking power of jaw member is different, similarly, is organized in the reaction that resistance closure function is produced in jaw
Power also changes correspondingly.In the prior art, when pending tissue is thicker or it is harder when, the reaction force that resist-nailed seat 34 is subject to is big, its
With the movement tendency for driving supporting part 242 reversely to pivot together so that lug 2421 bears larger pulling force, surveys by analysis
Test result learns that the moment of flexure of root 2421b is maximum, if the sectional dimension of the root 2421b and free end 2421a of lug 2421
Identical, then the root 2421b of lug 2421 bearing the bending stress of maximum because being easiest to be broken.In embodiments of the present invention,
Using the design principle of the beam of uniform strength, the thickness of lug 2421 is successively decreased from root 2421b to free end 2421a, ensure lug
The sectional dimension of 2421 root 2421b is maximum so that each section flexure stress of lug is same or like, so that in resist-nailed seat
In the case that 342 space of groove is limited, to greatest extent improve material utilization rate and lug 2421 bearing capacity, make its avoid because
Bear huge pulling force and be broken.On the concrete structure of supporting part 242, the present invention provides three kinds of embodiments.Referring to Fig. 5 institutes
Show, be the first embodiment of supporting part 242.Supporting part 242 includes the top surface of two 2421 free end 2421a of lug of connection,
The top surface is parabola, and the top surface of supporting part 242 is the one side away from pulling force suffered by lug 2421, and top surface is parabola so that
The bending stress that supporting part 242 is subject to along each section of Impact direction is close, is set further to the ideal of the beam of uniform strength
Meter, ensures the uniform intensity distribution of supporting part 242, further improves the performance of supporting part 242.
The second embodiment of supporting part 242 and the difference of first embodiment are the top surface for arc surface (not
Illustrated), top surface is arc surface so that and the bending stress that supporting part 242 is subject to along each section of Impact direction is close,
The ideal design of the beam of uniform strength is closer to, ensures the uniform intensity distribution of supporting part 242, and is easier machine-shaping.Ginseng
As shown in Figure 6, it is the 3rd embodiment of supporting part 242, in this embodiment, lug 2421 includes the relatively close nail
The bottom surface of storehouse seat 32 and the back side away from the staple cartridge tray 32, since Fig. 6 does not illustrate staple cartridge tray 32, thus here in connection with
Position relationship explanation shown in Fig. 6, the back side is the upper surface of the lug 2421 shown in Fig. 6, and the following table that bottom surface is lug 2421
Face, the back side are inclined-plane.Ramp structure is simple, easily processed into type.(inclined-plane has been made at the back side of lug into Fig. 6.)
In the supporting part 242 of three of the above embodiment, lug 2421 all has the bottom surface of relatively close staple cartridge tray 32,
When jaw member clamp thicker or during compared with sclerous tissues, resist-nailed seat 34 has the trend moved to opening direction so that lug 2421
Bottom surface stress, be particularly susceptible from fracture of root.Improvement backside structure is above examples provided to carry to strengthen lug 2421
The scheme of power, in a preferred embodiment of the invention, bottom surface are additionally provided with fillet (only in the 3rd embodiment party close to the position of root
In formula, another two embodiment does not have).The design of fillet solves the problems, such as that bottom surface Root Stress is concentrated, and further increases
The bearing capacity of 2421 root of lug.The material of supporting part 242 is stainless steel, as to the improved supplement of structure, the optimization of material
The intensity of supporting part 242 can further be lifted.
Addedly to say, resist-nailed seat groove 342 is matched somebody with somebody with 242 phase shape of supporting part, and supporting part 242 is contained in resist-nailed seat groove 342, and two
Person's shape enters resist-nailed seat groove 342 prevented also from dust and other impurities and influences supporting part 242 in resist-nailed seat groove with that can avoid rocking
The smooth degree moved in 342.
Connection and the matching relationship of cutter 24 and resist-nailed seat 34 are described above, 2 and Fig. 3 is briefly situated between below in conjunction with the accompanying drawings
Continue the connection matching relationship of cutter 24 and staple cartridge tray 32.It is stated that, staple cartridge tray 32 has the channel slot being located therein above
322, channel slot 322 and 342 position correspondence of resist-nailed seat groove, collaboration support cutter 24, and are that cutter 24 provide percussion and return
The passage of contracting.Wherein, channel slot 322 is straight slot, and channel slot 322 provides accommodating space and route guidance for cutter 24, due to
The cutter 24 of Minimally Invasive Surgery are narrow and small and sharp keen, and the positioning for destination organization is more accurate, thus correspondingly, channel slot 322
It is elongated and narrow.Cutter 24 include being used for the Access Division 244 for being connected in channel slot 322, and Access Division 244 may be in response to be applied to
Percussion force or withdrawal force on cutter 24 move in channel slot 322, and the connection mode of clamping is conducive to open in resist-nailed seat 34
Bidirectionally limited cutter 24 during conjunction.
Referring to shown in Fig. 5, Fig. 6, Access Division 244 includes spaced foot 2442 and middle ear 2441,2442 He of foot
Middle ear 2441 are extended to form by the main body 241 of cutter 24 to two opposite side directions, and Access Division 244 is in I-shaped.Clamping
Portion 244 houses the left and right sides of channel slot 322 into I-shaped receiving space, so as to be clamped with channel slot 322, so as to along logical
Road groove 322 moves.In this preferred embodiment, Access Division 244 is made of stainless steel material.Since Access Division 244 needs
Two-way active force is born, the rigidity and intensity of stainless steel material make it from being damaged.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or be electrically connected or can communicate each other；It can be directly connected, can also be indirectly connected by intermediary, can be with
It is the interaction relationship of connection inside two elements or two elements, unless otherwise restricted clearly.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
Combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this area
Art personnel can be tied the different embodiments or example described in this specification and different embodiments or exemplary feature
Close and combine.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (11)
1. a kind of surgical instruments, including：
Staple cartridge tray, it is used to be operably supported the nail bin being located therein；
Resist-nailed seat, it is pivotly connected with the staple cartridge tray, it simultaneously can be in open position with open position and closing position
Optionally moved between closing position, the resist-nailed seat has the resist-nailed seat groove being located therein；
Cutter, it is operably supported relative to the staple cartridge tray；
It is characterized in that, the cutter include supporting part, when the resist-nailed seat is in the close position, the supporting part enters
The resist-nailed seat groove, and may be in response to the percussion force that is applied on the cutter or withdrawal force moves in the resist-nailed seat groove
It is dynamic；
The supporting part includes lug from the main body of the cutter to opposite sides that extend from, the lug include free end with
The root of the cutter main body is connected to, the thickness of the lug is successively decreased from root to free end.
2. surgical instruments according to claim 1, it is characterised in that：The supporting part includes two free ends of connection
Top surface, the top surface is parabola.
3. surgical instruments according to claim 1, it is characterised in that：The supporting part includes two free ends of connection
Top surface, the top surface is arc surface.
4. surgical instruments according to claim 1, it is characterised in that：The lug includes the relatively close staple cartridge tray
Bottom surface and the back side away from the staple cartridge tray, the back side is inclined-plane.
5. surgical instruments according to claim 1, it is characterised in that：The lug includes the relatively close staple cartridge tray
Bottom surface and the back side away from the staple cartridge tray, the bottom surface is equipped with fillet close to the position of the root.
6. according to claim 1-5 any one of them surgical instruments, it is characterised in that：The resist-nailed seat groove and the supporting part
Phase shape is matched somebody with somebody.
7. surgical instruments according to claim 1, it is characterised in that：The material of the supporting part is stainless steel.
8. surgical instruments according to claim 1, it is characterised in that：The staple cartridge tray has passage formed therein
Groove, the channel slot are oppositely arranged for straight slot and with the resist-nailed seat groove.
9. surgical instruments according to claim 8, it is characterised in that：The cutter further include Access Division, the clamping
Portion is connected in the channel slot, and may be in response to the percussion force that is applied on the cutter or withdrawal force in the channel slot
It is mobile.
10. surgical instruments according to claim 9, it is characterised in that：The Access Division include spaced foot and
Middle ear, the foot and middle ear extend by the cutter main body to two opposite side directions, and the Access Division is in I-shaped.
11. the surgical instruments according to claim 9 or 10, it is characterised in that：The material of the Access Division is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710115443.9A CN107898484A (en) | 2017-02-28 | 2017-02-28 | Surgical instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710115443.9A CN107898484A (en) | 2017-02-28 | 2017-02-28 | Surgical instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107898484A true CN107898484A (en) | 2018-04-13 |
Family
ID=61839996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710115443.9A Pending CN107898484A (en) | 2017-02-28 | 2017-02-28 | Surgical instruments |
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| Country | Link |
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| CN (1) | CN107898484A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143965Y (en) * | 1992-02-15 | 1993-10-20 | 海军总医院 | Hyperbolic tooth base pressing steel plate for fixation of fracture |
| CN101224123A (en) * | 2007-01-11 | 2008-07-23 | 伊西康内外科公司 | Surgical stapler end effector with tapered distal end |
| CN204274538U (en) * | 2013-10-17 | 2015-04-22 | 柯惠Lp公司 | For surgical unit and the load units that therewith uses of surgically conjunctive tissue |
| WO2017025626A1 (en) * | 2015-08-12 | 2017-02-16 | Charité - Universitätsmedizin Berlin | Device for separating tissue parts |
-
2017
- 2017-02-28 CN CN201710115443.9A patent/CN107898484A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143965Y (en) * | 1992-02-15 | 1993-10-20 | 海军总医院 | Hyperbolic tooth base pressing steel plate for fixation of fracture |
| CN101224123A (en) * | 2007-01-11 | 2008-07-23 | 伊西康内外科公司 | Surgical stapler end effector with tapered distal end |
| CN204274538U (en) * | 2013-10-17 | 2015-04-22 | 柯惠Lp公司 | For surgical unit and the load units that therewith uses of surgically conjunctive tissue |
| WO2017025626A1 (en) * | 2015-08-12 | 2017-02-16 | Charité - Universitätsmedizin Berlin | Device for separating tissue parts |
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