CN106470722A - The flexible volume system of anesthesia and method - Google Patents
The flexible volume system of anesthesia and method Download PDFInfo
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- CN106470722A CN106470722A CN201580037315.6A CN201580037315A CN106470722A CN 106470722 A CN106470722 A CN 106470722A CN 201580037315 A CN201580037315 A CN 201580037315A CN 106470722 A CN106470722 A CN 106470722A
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- 206010002091 Anaesthesia Diseases 0.000 title claims description 36
- 230000037005 anaesthesia Effects 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 22
- 239000007788 liquid Substances 0.000 claims abstract description 114
- 239000012530 fluid Substances 0.000 claims abstract description 57
- 239000013536 elastomeric material Substances 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 239000000284 extract Substances 0.000 claims abstract description 6
- 239000006200 vaporizer Substances 0.000 claims description 25
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 4
- 239000012858 resilient material Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 46
- 230000003444 anaesthetic effect Effects 0.000 description 31
- 239000012159 carrier gas Substances 0.000 description 19
- 239000002184 metal Substances 0.000 description 13
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 10
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000002572 peristaltic effect Effects 0.000 description 6
- 230000036772 blood pressure Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000001272 nitrous oxide Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 230000003533 narcotic effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000011555 saturated liquid Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- DPYMFVXJLLWWEU-UHFFFAOYSA-N desflurane Chemical compound FC(F)OC(F)C(F)(F)F DPYMFVXJLLWWEU-UHFFFAOYSA-N 0.000 description 2
- 229960003537 desflurane Drugs 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 208000003443 Unconsciousness Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036407 pain Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Classifications
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- 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/18—Vaporising devices for anaesthetic preparations
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- 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/104—Preparation of respiratory gases or vapours specially adapted for anaesthetics
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- 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
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
- A61M11/04—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised
- A61M11/041—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised using heaters
- A61M11/045—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised using heaters using another liquid as heat exchanger, e.g. bain-marie
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- A61M16/0057—Pumps therefor
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
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- A61M16/0075—Bellows-type
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/01—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes specially adapted for anaesthetising
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
- A61M16/122—Preparation of respiratory gases or vapours by mixing different gases with dilution
- A61M16/125—Diluting primary gas with ambient air
- A61M16/127—Diluting primary gas with ambient air by Venturi effect, i.e. entrainment mixers
-
- A—HUMAN NECESSITIES
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
- A61M16/203—Proportional
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
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- 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
- A61M2016/102—Measuring a parameter of the content of the delivered gas
- A61M2016/1035—Measuring a parameter of the content of the delivered gas the anaesthetic agent concentration
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- A—HUMAN NECESSITIES
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- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/02—Gases
- A61M2202/0208—Oxygen
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/02—Gases
- A61M2202/0266—Nitrogen (N)
- A61M2202/0283—Nitrous oxide (N2O)
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
- A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
- A61M2205/3673—General characteristics of the apparatus related to heating or cooling thermo-electric, e.g. Peltier effect, thermocouples, semi-conductors
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- A—HUMAN NECESSITIES
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- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/50—General characteristics of the apparatus with microprocessors or computers
- A61M2205/502—User interfaces, e.g. screens or keyboards
- A61M2205/505—Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
Landscapes
- Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
This document describes a kind of for by the system of liquid pressing.This system may include liquid reservoir and is attached to the pump of liquid reservoir, and pump extracts liquid from liquid reservoir.The flexible volume being attached to pump receives liquid from pump.Flexible volume is made up of elastomeric material to raise the pressure of liquid.The valve being attached to flexible volume receives fluid under pressure from flexible volume.
Description
Background
Anesthesia can give in gaseous form patient with produce such as pain management, unconscious, prevent memory formed and/or benumb
Effect.The narcotic predetermined dosage giving can be drawn in the lung of patient with produce one of these effects or
Multiple.
Anesthesiaing system may include the anesthetic machine coupling with evaporator system.Conventional vaporizer systems adjust anesthetis with gas phase
Amount.More properly, narcotic temperature is increased to its evaporating point and and then adjusts the fiber crops conveying by some Conventional vaporizer systems
The concentration of liquor-saturated gas is so that output concentration maintains at the aimed concn being pre-selected.
One problem of some evaporator systems is it may be necessary to the valve being attached to vaporizer will change the fiber crops of flow rate
Liquor-saturated liquid is delivered to vaporizer.In some cases, when compared with the valve with small range of liquid flow, there is larger model
The valve of the liquid flow ability enclosed can be relatively costly.
Briefly describe
One embodiment be related to a kind of for by the system of liquid pressing and blood pressure lowering.This system includes liquid reservoir and is attached to liquid
The pump of body reservoir.Pump is configured to from liquid reservoir extraction liquid and liquid is back to liquid reservoir.It is attached to the flexible appearance of pump
Amass and be configured to from pump reception liquid and liquid is back to pump.Flexible volume is made up of elastomeric material with the liter when its volume increases
The pressure of high liquid.This system includes being attached to the valve of flexible volume.Valve is configured to receive fluid under pressure from flexible volume.
Another embodiment be related to a kind of for by the method for liquid pressing.The method includes being extracted from liquid reservoir by pump
Liquid.The method is additionally included in be attached to and receives liquid from pump at the flexible volume of pump.The pressure of liquid is based on flexible volume
Rebound elasticity and raise.The method includes receiving fluid under pressure from flexible volume at the valve being attached to flexible volume.
Yet another embodiment is related to anesthesia evaporator device.Anesthesia evaporator device includes liquid reservoir and is attached to
The pump of liquid reservoir.Pump is configured to extract liquid from liquid reservoir.Anesthesia evaporator device includes the flexible volume being attached to pump
To receive liquid from pump.Flexible volume is made up of elastomeric material to raise the pressure of liquid.Anesthesia evaporator device includes coupling
The valve of extremely flexible volume is to receive fluid under pressure from flexible volume.Anesthesia evaporator device include being attached to the vaporizer of valve with from
Valve receives fluid under pressure.
The brief description of accompanying drawing
This technology will become to be more fully appreciated with from combining the described in detail below of accompanying drawing, similar reference number in accompanying drawing
Represent similar part, wherein：
Fig. 1 shows the schematic diagram according to embodiment evaporator system used in anesthesia conveying environment；
Fig. 2 shows the schematic diagram of the evaporator system according to embodiment；
Fig. 3 shows a part for the evaporator system including pump and flexible volume；And
Fig. 4 shows for by the block diagram of the method for liquid pressing.
Describe in detail
In the following detailed description, accompanying drawing has been carried out with reference, the specific embodiment that accompanying drawing forms one part and can put into practice leads to
Cross explanation to illustrate wherein.These embodiments describe in detail to enable those skilled in the art to put into practice embodiment enough,
And it will be appreciated that other embodiments can be used, and logic, machinery can be made, electrically change without deviating from embodiment with other
Scope.Therefore, described in detail below will be not intended as limit the scope of the present invention.
As discussed above it may be necessary to be attached to the valve of vaporizer to convey the anesthetic fluid of change flow rate to evaporation
Device.In embodiments discussed herein, pump is attached to flexible volume.Flexible volume can be by resilient and/or elastomeric material structure
Become.When forcing liquid in flexible volume, due to the counter-force of the increase of flexible cubical expansion, the pressure rise of liquid.When
Liquid when flexible volume removes, due to flexible volume owing to shrink reduction counter-force, the reduced pressure of liquid.Pressurized fluid
Body is then provided to be attached to the valve of flexible volume and and then to vaporizer.
Resilient material is can to rebound or resilience forming shape after bending, stretching, extension or compression as noted herein
Material.Elastomeric material is to produce the counter-force increasing when volume increases and produce reduction in volume reducing as noted herein
The material of counter-force.
The technique effect of at least one embodiment includes the range of flow extending.For example, due to being attached to flexible volume
When valve fluid flow scope increase, valve can have relatively small range of flow, rather than needs in fixing input pressure
Under there is the valve of larger fluid flow scope.In some cases, the fluid flow scope of valve can be by related to flexible volume
Join and effectively increase, valve receives fluid under pressure from this flexible volume.
In FIG, anesthesiaing system 100 is drawn according to an enforcement illustrative.Anesthesiaing system 100 include anesthetic machine 102,
Multiple gas reservoir part 104a, 104b and 104c and evaporator system 103.Evaporator system 103 includes flexible volume
105.As discussed in greater detail below, liquid (such as anesthetic fluid) is pressurizeed and blood pressure lowering by flexible volume 105.
Anesthetic machine 102 illustrate for illustrative purposes it is to be understood that, other types of anesthetic machine can be alternatively real
Apply.In typical hospital environment, gas reservoir part 104a, 104b and 104c be concentrate positioning storage tank, its be configured to by
Medical gas are supplied to multiple anesthetic machines and multiple ward.Storage tank generally pressurizes and transmits to anesthesia to help by medical gas
Machine 102.
Then gas reservoir part 104a, 104b and 104c will be described as including air tank 104a, oxygen (O respectively2) tank
104b and nitrous oxide (N2O) tank 104c；It should, however, be understood that other memory devices and other types of gas can be alternative
Ground is implemented.Gas storage tanks 104a, 104b and 104c are each respectively connecting to the gas selector valve of gas mixer 108
One of 106a, 106b and 106c.Gas selector valve 106a, 106b and 106c are embodied as not operating in anesthetic machine 102
When close from storage tank 104a, 104b and 104c medical gas stream.When in gas selector valve 106a, 106b and 106c
One of when opening, the gas from respective stored tank 104a, 104b and 104c transmits under stress to anesthetic machine 102.
Anesthetic machine 102 includes being suitable to receiving the gas mixer 108 of medical gas from storage tank 104a, 104b and 104c.
Gas mixer 108 includes multiple control valves 110a, 110b and 110c, they be respectively connecting to gas selector valve 106a,
One of 106b and 106c.Gas mixer 108 also includes multiple flow transducer 112a, 112b and 112c, each of which
It is arranged in the downstream of corresponding control valve 110a, 110b and 110c.Through one of control valve 110a, 110b and 110c and warp
After excessively stream quantity sensor one of 112a, 112b and 112c, various gas (that is, air, O2And N2O) combination is with carrier gas
Export formation carrier gas at 114.
Control valve 110a, 110b and 110c and flow transducer 112a, 112b and 112c are each attached to controller 116.
Controller 116 is configured to respond to carry out operational control valve from the specific gas flow rate feedback of flow transducer 112a, 112b and 112c
110a, 110b and 110c.Therefore, controller 116 is embodied as maintaining various gases (that is, air, O2And N2O) selectable
Flow rate is so that the carrier gas at carrier gas outlet 114 includes air, the O that ratio may be selected2And N2O.
Carrier gas flow to pneumatic circuit 118.Evaporator system 103 is incorporated into anaesthetizing steam in pneumatic circuit 118.With respect to
The gas that evaporator system 103 is arranged in the pneumatic circuit 118 of upstream exclusively includes carrier gas.With respect to evaporator system
103 gases being arranged in the pneumatic circuit 118 in downstream include the mixture of carrier gas and anesthesia steam and are therefore referred to as gaseous mixture
Body.Mixed gas are delivered to patient 124 by respiratory system 126.Although evaporator system 103 schematically depicts anesthesia system as
The independent component of system 100, however, it should be noted that it can alternatively be attached in the design of anesthetic machine 102.
The block diagram of Fig. 1 is not intended to point out that anesthesiaing system 100 includes the whole components shown in Fig. 1 in each case.This
Outward, any number of extra or alternative component not shown in Fig. 1 may include in anesthesiaing system 100, and this depends on specific reality
The details applied.
Fig. 2 shows the schematic diagram of the evaporator system according to embodiment.Evaporator system including flexible volume 105
103 schematically show in fig. 2.Evaporator system 103 may include controller 202, liquid reservoir 204, pump 206, valve 208,
Vaporizer 210, carrier gas sensor 212 and/or hybrid gas sensor 214.In fig. 2, dotted line can represent logical between component
Letter, dotted line can represent the gas stream between component, and solid line can represent the liquid flow between component.
Controller 202 may be operably coupled to user input 216, liquid reservoir 204, pump 206, valve 208, vaporizer 210,
Carrier gas sensor 212 and hybrid gas sensor 214 and be suitable to from their receives input signals.User input 216 may include suitable
In any device of the transmission of the information of promotion, such as, such as keyboard, mouse, touch screen, dial, tracking ball, speech recognition device
Part etc..According to an embodiment, controller 202 may include computer.
Liquid reservoir 204 is suitable to keep anesthetic fluid.According to an embodiment, anesthetic fluid may include desflurane；However,
Other anesthetis can alternately be implemented.Those skilled in the art will be appreciated that, desflurane has at 1 atmosphere pressure
23.5 degrees Celsius of boiling point is so that it can evaporate at room temperature or near it.Therefore desirable be implement heat regulating system and/
Or pressure regulating system is to maintain its liquid phase until providing to vaporizer 210 by anesthetis.Such as in various components (such as liquid
Body reservoir 204, pump 206, flexible volume 105, valve 208 and/or vaporizer 210) temperature at place, pressure, the operation of liquid level
Condition can sense and be conveyed to controller 202.
Pump 206 is configured to from liquid reservoir 204 extraction anesthetic fluid and anesthetic fluid is back to liquid reservoir 204.Pump
206 pumps that may include number of different types, such as, the micro-fluid pump of such as solenoid-activated or piezoelectric micro-pump.At some
In embodiment, pump 206 can be peristaltic pump.As discussed in greater detail below, peristaltic pump can show when pump does not enable
Writing prevents flowing in either direction for the liquid.Therefore, in some cases, evaporator system 103 can be not required in addition to pump 206
Want secure closure mechanism.
Pump 206 can have adjustable variable frequency in the range of limiting in advance, to adjust the fiber crops with flexible volume 105
The volume-exchange (volumetric exchange) of liquor-saturated liquid.Those skilled in the art will be appreciated that, the frequency of pump 206
It is the measurement of the speed of operation of pump, it can measure into cycle of oscillation per second.Pump 206 can have can in the range of limiting in advance
The variable duty cycle adjusting, to adjust the volume-exchange with the anesthetic fluid of flexible volume 105.Those skilled in the art will
It is appreciated that, the cycle of operation of pump 206 is the measurement of enabling time during longer period for the pump, it can measure into percentage
Number.Pump 206 can have adjustable variable drive level in the range of limiting in advance, to adjust the fiber crops with flexible volume 105
The volume-exchange of liquor-saturated liquid.Those skilled in the art will be appreciated that, the driving level of pump 206 is the survey of the excitation amplitude of pump
Amount, it can measure into volt or ampere.Pump 206 can have adjustable route-variable length in the range of limiting in advance, with
Adjust the volume-exchange with the anesthetic fluid of flexible volume 105.Those skilled in the art will be appreciated that, the stroke of pump 206
Length is the measurement of the mechanical deflection of operating mechanism (for example, barrier film or piston) of pump.Pump 206 can have forward and inverse operation
Pattern to adjust the direction with the volume-exchange of the anesthetic fluid of flexible volume 105.Additionally, check valve (not shown) can be along liquid
Body circulation road is bound to pump 206 only to guide anesthetic fluid towards patient, and prevents the retrograde flow towards liquid reservoir 204.
Flexible volume 105 can be formed by resilient and/or elastomeric material.Flexible volume 105 can cyclically accept and
Release liquid.As discussed in greater detail below, flexible volume 105 shows the counter-force of increase when expanding, by
Increase in volume and produce the fluid pressure of rising.On the contrary, flexible volume 105 shows the counter-force of reduction when shrinking, by
Remove in volume and produce the fluid pressure of reduction.In some cases, expansion or shrinkage in flexible volume 105 and leading to
The change of fluid pressure can be the result of one or more factors of pump 206.Factor include the frequency of pump circulation, cycle of operation,
Driving level, the haul distance of pump, the pattern of operation or any of the above described combination.
Valve 208 optionally operates in open position or pattern, and wherein anesthetic fluid can be transmitted from flexible volume 105
To vaporizer 210.Valve 208 optionally operates in closed position or pattern, and wherein anesthetic fluid is prevented from holding from flexible
Long-pending 105 transmit to vaporizer 210.Controller 202 is embodied as the operator scheme of selector valve 208.As an example, controller 202
The operation of adjustable valve 208 is so that anesthetic fluid is sent to the order that vaporizer 210 is derived from user input 216 for response
And it is delivered to patient (patient 124 of such as Fig. 1).
Vaporizer 210 is suitable to for the anesthetic fluid from valve 208 to be transformed into anesthesia steam.Vaporizer 210 may include thermal source
(not shown), thermal source is suitable to raise the temperature of anesthetic fluid and thus contribute to it to be transformed into anesthesia steam.For example, thermal source can wrap
Include resistive heater, cartridge heater, peltier device, sintered heater (sintered heater) or passive heating system
(such as including the system of heat pipe).The anesthesia steam carrying out flash-pot 210 is delivered to entrance 122 and and then is mixed with shape with carrier gas
Become mixed gas.In an alternative embodiment, carrier gas can directly supply to vaporizer 210 to help anesthetic fluid evaporation, and
Improve mixing and transmission anesthesia steam to form the efficiency of mixed gas.
Carrier gas sensor 212 and hybrid gas sensor 214 may include the known device being suitable to the property feature measuring fluid
Part.For the purpose of the disclosure, term fluid should be defined as including any nothing continuously deforming under the shear stress applying
Amorphous mass, and therefore may include both liquids and gases.
According to an embodiment, carrier gas sensor 212 is suitable to measure fluid flow rate, and hybrid gas sensor 214 constructs
Become measurement anesthesia vapour concentration.In another embodiment, carrier gas sensor 212 and hybrid gas sensor 214 both construct
Become measurement fluid flow rate, and the contrast of fluid flow rate provides the concentration output of the measurement of vaporizer 210, and will be conveyed by pump 206
The amount of the anesthetic fluid being exported with the concentration reaching anesthesia evaporator 210.In yet another embodiment, anaesthetize vapour concentration
Can directly be measured by the sensor 214 being configured to the concentration detecting anesthesia steam.The vapour concentration of measurement anesthetic fluid is
Know that technology is including but not limited to infrared, ultrasonic, mass spectral analyses and laser refraction technology.Anesthesia vapour concentration may be based on autobiography
Measuring, sensor 212 and 214 is respectively configured to estimate any physics of carrier gas and mixed gas the feedback of sensor 212 and 214
Property (for example, gas density).Feedback control system in conjunction with the anesthesia vapour concentration recording and user input 216 concentration can structure
Cause to adjust the operation of pump 206 to reach the operation that user setup vaporizer exports concentration and/or adjusts pump 206.
Have been described with the exemplary elements of evaporator system 103, the operation of evaporator system 103 now will be according to enforcement
Example is describing.Controller 202 may be adapted to receive the narcotic target dose from user input 216 or concentration.When receiving use
During the aimed concn that family requires, the bootable pump 206 of controller 202 extracts anesthetic fluid from liquid reservoir 204.Controller 202 is right
After pump 206 can be adjusted by pump factor discussed above, to be suitable for reaching based on user require narcotic target agent
The mode of the given fluid pressure of amount or concentration conveys anesthetic fluid's flow rate to flexible volume 105.Then pressure anesthesia liquid can be
There is provided to valve 208.
In an embodiment, can be changed by flexible volume 105 to the input pressure of valve 208, thus the flow model of extension valve 208
Enclose.Valve due to having larger fluid flow scope can be more expensive compared to the valve with less fluid flow scope, manufactures and steams
The cost sending out device system 103 can be reduced by being attached to the using of flexible volume 105 of valve 208.Additionally, because pressurization occurs in
At flexible volume 105, liquid reservoir 204 can be not pressurized.When be configured to the liquid reservoir phase that fluid under pressure provided to pump 206
Than when, being not pressurized liquid reservoir can be relatively not expensive.In this way, the overall cost of evaporator system 103 can reduce.
Pressure anesthesia liquid provides to vaporizer 210 from valve 208, and anesthetic fluid is transformed into anesthesia by vaporizer 210 and steams
Vapour.Then anesthesia steam mixed with carrier gas to form mixed gas.The aimed concn of the anesthesia steam selecting including user mixed
Close gas and then the patient 124 discussing above with respect to Fig. 1 can be delivered to.
As discussed above, controller 202 may be adapted to be based on self contained gas sensor 212 and/or hybrid gas sensor
214 feedback operation valve 208 and pump 206.As an example, controller 202 can be based on carrier gas flow rate (as by carrier gas sensor 212
Measurement) and/or mixed gas flow rate (as measured by hybrid gas sensor 214) operation valve 208 and pump 206 to adjust anesthesia liquid
The stream conveying of body and/or pressurization.As another example, controller 202 can be based on the recording of anesthesia steam in mixed gas
Concentration (as measured by hybrid gas sensor 214) adjusts the stream conveying of anesthetic fluid and/or pressurizes.
In some cases, controller 202 can receive and carrier gas flow rate, the user input being such as derived from sensor 212
216th, it is derived from the mixed gas concentration of sensor 214 information related with the variable of the pressure feedback from flexible volume 105.Base
In the information receiving, controller 202 can perform operation, regulation operation adjusting operation, valve of pump etc..
Fig. 3 shows a part for the evaporator system including pump and flexible volume.In the example shown in fig. 3, Fig. 2
Pump 206 be peristaltic pump, point out at 302.Flexible volume 105 is metal bellowss, points out at 304.In this case, compacted
Dynamic pump 302 can be back to liquid reservoir 204 from liquid reservoir 204 extraction liquid or by liquid, and liquid is provided to metal wave
Stricture of vagina pipe 304 or from metal bellowss 304 extract liquid.When deactivation or closing, peristaltic pump 302 can significantly prevent liquid arbitrary
Flowing on direction.Therefore, in certain embodiments it may be unnecessary to provide the external security mechanism of similar functions.When by wriggling
When pump 302 provides the liquid volume of the accumulation to metal bellowss 304 to increase, the elastic reaction of metal bellowss 304 can increase,
Thus raising the liquid providing to the valve of evaporator system (valve 208 in the evaporator system 103 such as discussed) above for Fig. 2
The pressure of body.When the liquid volume of the accumulation extracted from metal bellowss 304 by peristaltic pump 302 increases, metal bellowss 304
Elastic reaction can reduce, thus reduce provide to evaporator system valve (such as above for Fig. 2 discuss evaporator system
Valve 208 in 103) liquid pressure.As the pump 206 above for Fig. 2 is discussed, the operation of peristaltic pump 302
Multiple factors can affect the pressurization being applied to liquid, such as frequency, cycle of operation, driving level, stroke by metal bellowss 304
Length, forward or contrary operator scheme etc..
In certain embodiments, one or more sensors 306 may include a part or company as metal bellowss 304
It is connected to metal bellowss 304.For example, metal bellowss 304 can combination pressure sensor, strain transducer, displacement transducer etc..
The sensor 306 being combined with metal bellowss 304 can be provided with regard to metal bellowss and evaporator system (generally all as above
The evaporator system that literary composition is discussed with regard to Fig. 1 and Fig. 2) associated various conditions feedback.
Fig. 4 shows for by the block diagram of the method for liquid pressing and blood pressure lowering.At square frame 402, liquid is by pump from liquid
Body reservoir extracts.At square frame 404, liquid receives from pump at flexible volume.Flexible volume configuration becomes resilient and/or bullet
Property, have to the counter-force expanding.When liquid receives at flexible volume, depending on the volume of the liquid receiving, liquid
The counter-force based on the expansion to flexible volume for the pressure and increase, as pointed out at square frame 406.Fluid under pressure is being attached to
Receive at the valve of flexible volume, as pointed out at square frame 408.
In an embodiment, method 400 includes being attached at the vaporizer of valve from valve reception fluid under pressure.There is provided to evaporation
The particular press of the liquid of device may depend on the dosage of the anesthesia steam providing to patient and/or desired concentration, such as closes above
As Fig. 2 discusses.
Receive liquid to may include from pump reception liquid at the ingress port of flexible volume at flexible volume, and will pressurize
Liquid provides to valve from the outlet port of flexible volume.In other words, in an embodiment, flexible volume is in the downstream of pump, and not
It is the integration component of pump.
Additionally, method 400 may include the blood pressure lowering of liquid.For example, in flexible volume, the liquid of pressurization can based on offer extremely
The anesthesia given dose of steam of patient and/or desired concentration and blood pressure lowering, such as above for as Fig. 2 discussion.
In certain embodiments, the pressure limit of valve is less than the pressure limit of flexible volume.As discussed above for Fig. 2
Like that, flexible volume can increase the fluid flow scope of evaporator system 103 effectively, and not necessarily has increase using itself
Fluid flow scope valve.
Although embodiment is herein relative to the vapo(u)rization system description using in the medical field, to vapo(u)rization system
Reference can be construed broadly as.Additionally, those skilled in the art will recognize that this technology can be applicable to many different structures, group
Knit or process.
Although detailed accompanying drawing and given particular example describe specific embodiment, they are used only as the mesh illustrating
's.The system and method illustrating and describing are not limited to exact details provided herein and condition.On the contrary, without departing from appended right
In the case of the spirit of this technology of expression in requirement, any number of replacement, modification, change and/or omission can be retouched herein
Make in the design of the embodiment stated, operating condition and configuration.
This written description uses examples to disclose the present invention, including optimal mode, and also makes the technology of any this area
Personnel can put into practice the present invention, including manufacture and using any device or system and executes any method comprising.The present invention
Patentable scope is defined by the claims, and may include the other examples that those skilled in the art expects.If
These other examples have not different from the literal language of claim structural elements, or if they include wanting with right
The equivalent structural elements of the literal language asked no essence difference, then be intended to the scope making these other examples be in claim
Interior.
Claims (20)
1. a kind of for by the system of liquid pressing, including：
Liquid reservoir；
Pump, it is attached to described liquid reservoir, and described pump is in order to extract liquid from described liquid reservoir；
Flexible volume, it is attached to described pump to receive liquid from pump, and described flexibility volume is made up of elastomeric material with described
The volume of flexible volume raises the pressure of described liquid when increasing；And
Valve, it is attached to described flexibility volume to receive fluid under pressure from described flexibility volume.
2. system according to claim 1 is it is characterised in that described flexibility volume reduces in the volume of described flexibility volume
When reduce the pressure of described liquid.
3. system according to claim 1 is it is characterised in that described flexibility volume includes：
Ingress port, in order to receive liquid from described pump；With
Outlet port, in order to provide fluid under pressure to described valve.
4. system according to claim 1 is it is characterised in that the inlet pressure to described valve is changed by described flexibility volume
Become so that the flow rate range of described valve increases.
5. system according to claim 4 it is characterised in that described system also include being attached to the vaporizer of described valve with
Receive described liquid from described valve, wherein said rate of throughput is based in part on the rebound elasticity of described flexibility volume.
6. system according to claim 1 is it is characterised in that described flexibility volume includes flexibly deformable ripple
Pipe.
7. system according to claim 1 is it is characterised in that the pressure portion ground of described fluid under pressure depends on described pump
Factor, described factor includes：
The frequency of pump circulation；
Cycle of operation；
Driving level；
The haul distance of described pump；
The operator scheme of described pump；Or
Above-mentioned any combinations.
8. system according to claim 1 is it is characterised in that described pump is configured to provide liquid to described flexibility volume
And extract liquid from described flexibility volume.
9. a kind of for by the method for liquid pressing, including：
Liquid is extracted from liquid reservoir by pump；
Receive liquid being attached at the flexible volume of described pump from pump；
The pressure of described liquid is raised based on the described flexibility rebound elasticity of volume；And
Receive fluid under pressure from described flexibility volume at the valve being attached to described flexibility volume.
10. method according to claim 9 is it is characterised in that methods described is additionally included in the evaporation being attached to described valve
Described liquid is received from described valve at device.
11. methods according to claim 9 include it is characterised in that receiving liquid at described flexibility volume：
Receive liquid from described pump at the ingress port of described flexibility volume；With
Fluid under pressure is provided to described valve from the outlet port of described flexibility volume.
12. methods according to claim 9 are it is characterised in that the inlet pressure to described valve is changed by described flexibility volume
Become so that the flow rate range of described valve increases.
13. methods according to claim 12 are it is characterised in that methods described is additionally included in the valve being attached to receive
Vaporizer at from described valve receive described liquid, wherein said rate of throughput based on described flexibility volume rebound elasticity.
14. methods according to claim 9 are it is characterised in that the pressure portion ground of described fluid under pressure is depending on described
The factor of pump, described factor includes：
The frequency of pump circulation；
Cycle of operation；
Driving level；
The haul distance of described pump；
The operator scheme of described pump；Or
Above-mentioned any combinations.
A kind of 15. anesthesia evaporator devices, including：
Liquid reservoir；
Pump, it is attached to described liquid reservoir, and described pump is in order to extract liquid from described liquid reservoir；
Flexible volume, it is attached to described pump to receive liquid from described pump, and described flexibility volume is made up of resilient material
To raise the pressure of described liquid；
Valve, it is attached to described flexibility volume to receive fluid under pressure from described flexibility volume；And
Vaporizer, it is attached to described valve to receive described liquid from described valve.
16. anesthesia evaporator devices according to claim 15 are it is characterised in that described pump includes closed position with substantially
Prevent liquid from extracting from described liquid reservoir or slipping back to described liquid reservoir.
17. anesthesia evaporator devices according to claim 15 it is characterised in that to described valve inlet pressure by described
Flexible volume changes so that the flow rate range of described valve increases.
18. anesthesia evaporator devices according to claim 15 are it is characterised in that described flexibility volume includes flexibly may be used
The corrugated tube of deformation.
19. anesthesia evaporator devices according to claim 15 it is characterised in that described fluid under pressure pressure portion ground
Depending on the factor of described pump, described factor includes：
The frequency of pump circulation；
Cycle of operation；
Driving level；
The haul distance of described pump；
The operator scheme of described pump；Or
Above-mentioned any combinations.
20. anesthesia evaporator devices according to claim 15 it is characterised in that described pump be configured to by liquid provide to
Described flexibility volume and from described flexibility volume extract liquid.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/327,159 US10668243B2 (en) | 2014-07-09 | 2014-07-09 | Anesthesia compliant volume system and method |
| US14/327159 | 2014-07-09 | ||
| PCT/US2015/038501 WO2016007327A1 (en) | 2014-07-09 | 2015-06-30 | Anesthesia compliant volume system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106470722A true CN106470722A (en) | 2017-03-01 |
| CN106470722B CN106470722B (en) | 2019-11-01 |
Family
ID=53673308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580037315.6A Expired - Fee Related CN106470722B (en) | 2014-07-09 | 2015-06-30 | Anaesthetize flexible volume system and method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10668243B2 (en) |
| EP (1) | EP3166670B1 (en) |
| CN (1) | CN106470722B (en) |
| WO (1) | WO2016007327A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112955205A (en) * | 2018-11-08 | 2021-06-11 | 通用电气公司 | System and method for ultrasonically driven anesthetic gasifier |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017102446A1 (en) * | 2016-09-15 | 2018-03-15 | Netzsch - Gerätebau Gesellschaft mit beschränkter Haftung | Method and apparatus for generating a continuous carrier gas / vapor mixture stream |
| RU2635127C1 (en) * | 2017-03-20 | 2017-11-09 | Андрей Владиславович Курочкин | Device for producing multicomponent gas mixtures (versions) |
| US11577042B2 (en) * | 2017-06-08 | 2023-02-14 | Case Western Reserve University | Vaporization system for delivery in a controlled concentration |
| US11179538B2 (en) * | 2017-09-29 | 2021-11-23 | General Electric Company | Systems for anesthetic agent vaporization |
| US10987475B2 (en) * | 2017-10-25 | 2021-04-27 | General Electric Company | Systems for feedback control of anesthetic agent concentration |
| US11154686B2 (en) * | 2018-05-23 | 2021-10-26 | General Electric Company | System and method for tracking anesthetic agent in a vaporizer reservoir |
| DE102021100090B4 (en) | 2020-05-13 | 2023-08-10 | Drägerwerk AG & Co. KGaA | System for providing gases or gas mixtures with the supply of substances |
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| GB9109021D0 (en) | 1991-04-26 | 1991-06-12 | Boc Group Plc | Dosing pump |
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| FR2727036B1 (en) | 1994-11-23 | 1996-12-13 | Taema | PROCESS FOR THE PREPARATION OF A GAS MIXTURE FORMED OF A SUPPORT GAS AND AN ADDITIVE |
| EP0911053A3 (en) * | 1997-10-15 | 1999-12-22 | Ohmeda Inc. | Anesthetic agent liquid metering device |
| SE9903193D0 (en) * | 1999-09-09 | 1999-09-09 | Siemens Elema Ab | Anesthetic vaporizers |
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-
2015
- 2015-06-30 EP EP15738797.8A patent/EP3166670B1/en not_active Not-in-force
- 2015-06-30 WO PCT/US2015/038501 patent/WO2016007327A1/en active Application Filing
- 2015-06-30 CN CN201580037315.6A patent/CN106470722B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1390144A (en) * | 1999-11-15 | 2003-01-08 | 安奈欧股份有限公司 | A system related to intravenous anaesthesia |
| GB2400566A (en) * | 2003-04-15 | 2004-10-20 | Penlon Ltd | Anaesthetic vaporizer with pressurized reservoir |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3166670A1 (en) | 2017-05-17 |
| US10668243B2 (en) | 2020-06-02 |
| US20160008567A1 (en) | 2016-01-14 |
| EP3166670B1 (en) | 2018-03-07 |
| CN106470722B (en) | 2019-11-01 |
| WO2016007327A1 (en) | 2016-01-14 |
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