CN103853064A - Fluid electronic control system and anaesthesia machine - Google Patents

Abstract

The invention discloses a fluid electronic control system and an anaesthesia machine with the control system. The fluid electronic control system comprises a driving valve and an electronic control valve system. The driving valve comprises a piston, a fluid inlet, a first fluid outlet and a second fluid outlet, wherein the piston comprises a first channel and a second channel, the first channel is isolated from the second channel, and the piston can be switched between a first position and a second position under driving of fluid; the fluid inlet is used for leading in fluid to be conveyed, when the piston is switched to be at the first position, the fluid inlet is communicated with the first channel, and when the piston is switched to be at the second position, the fluid inlet is communicated with the second channel; the first fluid outlet is communicated with the first channel and the second fluid outlet is communicated with the second channel. The electronic control valve system drives the fluid to flow to the driving valve so as to drive the piston to be switched between the first position and the second position. The anaesthesia machine has good compatibility.

Description

Fluid electronic control system and Anesthesia machine

Technical field

The present invention relates to a kind of electronic control system of controlling fluid in anesthesia transmission system, especially control the fluid electronic control system that fluid switches transmission between main respiratory system and assisted respiartion system, and there is the Anesthesia machine of this fluid electronic control system and auxiliary common gas vent.

Background technology

Anesthesia machine must accurately and reliably be controlled patient's throughput.In existing anesthetic gases induction system, can divide into adult with Anesthesia machine and children's's Anesthesia machine according to the design feature of internal system part, taking better as different crowd enforcement anesthesia surgery.But can increase thus the equipment purchase cost of hospital, moreover the Anesthesia machine that is exclusively used in certain crowd can be lower in frequency of utilization, and the most structure of Anesthesia machine not of the same race is identical, such as anesthetic gases mixing portion.Visible, the compatibility of Anesthesia machine of the prior art has much room for improvement.

Summary of the invention

The main technical problem to be solved in the present invention is that the compatibility of Anesthesia machine has much room for improvement.

For solving the problems of the technologies described above, the invention provides a kind of fluid electronic control system, it comprises driver's valve and electrically-controlled valve system.This driver's valve comprises piston, fluid intake, first fluid outlet and second fluid outlet.Piston comprises first passage and the second channel of mutual isolation, and this piston can switch under the driving of drive fluid between primary importance and the second place.Fluid intake is used for introducing fluid to be transmitted, and in the time that piston is switched to primary importance, described fluid intake is connected with first passage, and in the time that piston is switched to the second place, described fluid intake is connected with second channel.First fluid outlet is communicated with first passage.Second fluid outlet is communicated with second channel.Thereby this electrically-controlled valve system control drive fluid flows to driver's valve driven plunger and switches between primary importance and the second place.

The present invention also provides a kind of Anesthesia machine that adopts above-mentioned fluid electronic control system.This Anesthesia machine comprises anesthetic gases commingled system, fluid electronic control system, main respiratory system and auxiliary common gas vent.Anesthetic gases commingled system output mixed gas, fluid electronic control system control mixed gas select one flow to described main respiratory system or auxiliary common gas vent.

The mixed gas that Anesthesia machine of the present invention forms anesthetic gases commingled system by fluid electronic control system with automatically controlled mode select one guide to main respiratory system or auxiliary common gas vent, thus for Anesthesia machine provides more connected mode, the compatible more external respiratory system of energy, improves its practical compatibility.In addition, the fluid control systems of electric-controlled type can obtain higher fluid flow, the usable range of Hoisting System.

Brief description of the drawings

Fig. 1 is the schematic diagram of the gas electronic control system of the anesthesia transmission system 100 of one embodiment of the present invention, and this electronic control system is used for controlling oxygen, laughing gas, air;

Fig. 2 is the schematic diagram of the gas electronic control system of the anesthesia transmission system 200 of another embodiment of the present invention;

Fig. 3 is the schematic perspective view of the Anesthesia machine of one embodiment of the present invention;

Fig. 4 is the local enlarged diagram of Anesthesia machine shown in Fig. 3;

Fig. 5 is the system chart of a kind of Anesthesia machine of the present invention;

Fig. 6 is the schematic diagram of the Anesthesia machine of one embodiment of the present invention;

Fig. 7 is the local enlarged diagram of the Anesthesia machine of one embodiment of the present invention;

Fig. 8 is the schematic diagram of the control panel of the Anesthesia machine of one embodiment of the present invention;

Fig. 9 A is the schematic diagram of the ACGO valve system that adopts of a kind of Anesthesia machine of the present invention in the first state;

Fig. 9 B is the schematic diagram that shown in Fig. 9 A, ACGO valve system is switched to the second state;

Figure 10 is the perspective view for the driver's valve of ACGO valve in the anesthesiaing system of one embodiment of the present invention;

Figure 11 A is the cross-sectional view of a kind of driver's valve of the present invention in the time of primary importance;

Figure 11 B is the cross-sectional view of driver's valve shown in Figure 11 A in the time of the second place;

Figure 12 is the principle schematic of the valve system of controlling for ACGO of another embodiment of the present invention;

Figure 13 A is the structural representation of valve system in the first state (state 1) of controlling for ACGO of another embodiment of the present invention;

Figure 13 B is the structural representation of the valve system of controlling for ACGO shown in Figure 13 A in the second state (state 2);

Figure 14 is the perspective view of the interior drive valve system of valve system of one embodiment of the present invention;

Figure 15 A is the ACGO valve system of another embodiment of the present invention principle schematic in the first state (state 1), and wherein valve system comprises a kind of four-way valve of form;

Figure 15 B is the principle schematic of ACGO valve system shown in Figure 15 A in the second state (state 2);

Figure 16 A is the ACGO valve system of another embodiment of the present invention principle schematic in the first state (state 1), and wherein valve system comprises the four-way valve of another kind of form;

Figure 16 B is the principle schematic of ACGO valve system shown in Figure 16 A in the second state (state 2).

Embodiment

By reference to the accompanying drawings the present invention is described in further detail below by embodiment.

In various embodiments, doctor can be in modern anesthetic induction system with electronics and/or mechanically control the flow of fluid (gas and/or liquid), as the flow of oxygen, laughing gas and air.One or more control handles can be configured to by the flow of one or more gases of mode control of electronics or machinery.Anesthesia transmission system can utilize manual control to control one or more gases and/or narcotic flow for basic control system.In addition, manually control also can be used as for subsequent use of electronic control system.

Mixed gas, comprises one or more gases and/or anesthetic, flows to patient by main respiratory system.Main respiratory system can comprise the respiratory system of any type, as the non-respirator of suction-type again, Closed Cycle respirator, and semi-enclosed rebreathing device.This mixed gas can also be transported to patient by an assisted respiartion system extraly.For example, an anesthetic induction system can comprise an auxiliary common gas vent.Combination gas physical efficiency is directed to auxiliary common gas vent, is input to an assisted respiartion machine or other gas systems by this outlet.

In some embodiment, mixed gas can optionally be imported to main respiratory system or auxiliary common gas vent.In one embodiment, the importing of mixed gas is by being used manually operated pneumatic adjusting or switch to realize.For example, the switching from main respiratory system to assisted respiartion system can realize with manually operated air operated reversing valve.

In the embodiment having, an electronically controlled auxiliary common gas vent valve (ACGO valve) can be configured to optionally mixed gas be imported main respiratory system or ACGO.This transfer process can be passed through electronic switch, button, driver plate, slide block, touch-screen, or other electronic input apparatus controls.This ACGO valve can be configured to one or more gases and/or arcotic, and system can provide relatively high flow, and the use compatibility of Anesthesia machine is provided.

In addition, the state that still remains on last operating and setting from Mechanical Driven switch is different, and automatically controlled ACGO valve can be configured to return to the state that a kind of next most probable uses.In addition, in one is implemented, ACGO based on detecting has the detection signal that is connected (for example, tracheae) or electronics connection with outside auxiliary breathing apparatus generation gas, and this ACGO valve can be configured to automatically air-flow is switched to ACGO from main respiratory system.

As rear described in detail, reversal valve can optionally import main respiratory system and ACGO by mixed gas air-flow.And the driving to reversal valve by driving gas can make reversal valve switch between two states.Driving gas can be by the control of one or more locking selector valve.In different enforcement, locking selector valve is bistable.In some embodiments, one or more locking selector valves can replace various valves, comprise non-bistable valve.Reversal valve can be configured to the bistable state switching valve of gas-powered.

In addition, reversal valve can be configured to by default a kind of mixed gas be imported to main respiratory system, unless it is driven change state by a driving gas and mixed gas is switched and imports to ACGO.For example, reversal valve can provide biasing precompressed by spring, and the passage that this reversal valve forms by default can import to mixed gas main respiratory system.Reversal valve comprises valve body and be configured in the piston moving back and forth in valve body.Valve body comprises air intake opening and two gas outlets of a gas to be transmitted (mixed gas).In the time transferring to primary importance, piston can import gas main respiratory system outlet, in the time transferring to the second place, imports to ACGO.

In one embodiment, valve body comprises a flexible member, as spring, makes piston give tacit consent in primary importance in one end of piston.Valve body comprise driving gas air intake opening make driving gas optionally driven plunger to the second place.In some implementations, valve body comprises a second driving gas entrance.In such embodiment, can, by optionally applying driving gas in the first driving gas air intake opening and the second driving gas air intake opening (or claiming the first driving gas entrance and the second driving gas entrance), piston be changed between primary importance and the second place.

In one embodiment, electric-controlled switch or electrically-controlled valve system can comprise a reversal valve, to optionally make mixed gas import main respiratory system or ACGO.Electrically-controlled valve system can comprise the piston being driven by driving gas, the translation between two positions of this piston.Based on a network being made up of multiple reversal valves of three-way diverter valve control, driving gas can optionally be imported the two ends of piston.This three-way diverter valve can be locking bistable state selector valve.

Reversal valve can also comprise one or more pressure safety valve (PSV)s and/or position detecting switch.Reversal valve also can comprise protective device and/or cover various different devices, as used protection switch protection position detecting switch.Although in the different examples of here enumerating, fluid is described to a kind of gas, as oxygen, laughing gas, and/or air.But various liquid and/or gas can be applicable to system and method described herein or the system and method through adaptability revision.

Once comprise anesthetic gases or narcotic the mixed gas automatically controlled or manual flow control component of flowing through, just can continue finally forward to flow to outlet.Mixed gas can be directed to a main respiratory system or be directed to ACGO by an auxiliary common gas vent valve (Auxiliary Common Gas Outlet valve, ACGO valve).This ACGO valve can be used as the replacement of manual operation pneumatic control switch or supplements.ACGO valve of the present invention, goes for high flow capacity anesthesiaing system, and good bio-compatibility is provided, and can under oxygen-enriched environment, use, and can carry the anesthetic with potential corrosion.For the purpose of easy description, the unified saying that has used ACGO valve below, this title can be equal to the title that replaces with common gas vent operation valve, common gas vent valve etc. and can represent its function original idea.

Main respiratory system can be various forms of respiratory systems, includes but not limited to non-circulating type respiratory system (non-regenerative respiratory system), closed loop regenerative respiratory system, semiclosed loop regenerative respiratory system.User can optionally be transferred to patient by mixed gas by the assisted respiartion system that is connected to ACGO by ACGO valve.The mode of selecting can be passed through the realizations such as electronic case, switch, rotating disk, slide block, touch-screen.

In addition, consider that the mechanically actuated switch in anesthesiaing system can keep the end-state using last time, the ACGO valve of electric-controlled type can be configured to the state that next most probable is used that automatically restores to.Such as, when ACGO valve is restarted, restores electricity, brought into use at every turn in system or according to the gas of the ACGO detecting and outer secondary auxiliary system/electric situation that connects, automatically air-flow is transferred to ACGO from main respiratory system, vice versa.

In some embodiments, ACGO valve comprises driver's valve.Driver's valve is controlled mixed gas and is flowed to respiratory system or ACGO under the driving of input driving gas/drive fluid.Described driving gas is controlled by one or more automatically controlled locking selector valve or claims reversal valve.Described locking selector valve can be bistable valve.In some embodiments, locking selector valve also can be made up of other the various valves that can realize similar two or more selection modes, and bistable is not necessary yet.

In some embodiments, the driver's valve main respiratory system that can by default mixed gas be led, can realize this purpose by the biasing of flexible member, such as spring or drawing plate.By guiding driving gas into driver's valve, mixed gas can then flow to ACGO.Driver's valve can comprise valve body and piston, and wherein piston can to-and-fro movement in valve body.Valve body comprises a mixed gas entrance and two mixed gas outlets, and wherein mixed gas entrance is used for introducing mixed gas, and mixed gas can be fresh air or the next gas of quick oxygenation module transmission that front end anesthetic gases commingled system transports.One of them mixed gas outlet is for mixed gas is drained to main respiratory system, and another mixed gas outlet is for being drained to ACGO by mixed gas.When piston is during in primary importance, mixed gas is drained to main respiratory system, and when piston movement is during to the second place, mixed gas is drained to ACGO.By default, any one that piston can be in two positions, system state in acquiescence mixed gas is drained to main respiratory system or ACGO one of them.Can select to arrange the system state under default situations according to different demands.

In one embodiment, valve body also comprises a flexible member, and this flexible member is arranged on one end of piston, for control piston by default in primary importance.Valve body also comprises a driving gas entrance, for introducing driving gas, piston actuated is arrived to the second place.In some embodiments, valve body can comprise two driving gas entrances, and driving gas is introduced and can be realized driven plunger arrival primary importance or the second place from different driving gas entrances.In one embodiment, driving gas can the driver's valve network based on by a dedicated three-way selector valve control be optionally directed to wherein one end of the opposite end of piston.This dedicated three-way selector valve can be a kind of self-locking, bistable selector valve.

Driver's valve can comprise one or above pressure valve or/and position detecting switch.Driver's valve can further include the various element of various forms of sheaths for the protection of valve, such as switch protection cover is for protective position detector switch.

In various embodiments, controller or control system can be realized by the various forms such as hardware, software, firmware or combination, such as realizing by FPGA.The module that is respectively used to control subsystems in controller or control system can be separate, also can be separated from each other independent setting, or part is integrated.Compare by software control and may make whole system more reliable by hardware controls, or the submodule scattering device of control system also can be reduced to mutual interference and improves reliability.Controller or control system can be passed through multi-purpose computer, special purpose computer, supporting storer, network etc. composition, and storer can adopt various suitable poke mediums, comprises herein and introducing no longer in detail.

The embodiment of the present invention is all with gas control system, be that in Anesthesia machine, to anaesthetize transmission system be that example is set forth design of the present invention, but persons skilled in the art should be understood, basic conception of the present invention and method and adaptive deformation method can be used for any fluid control systems.Oxygen, nitrous oxide (laughing gas) and the air using in wherein giving an example is also the object lesson of lifting for setting forth the present invention, can replace to easily other and be suitable for or required gas or fluid.

Below in conjunction with accompanying drawing, various embodiments of the present invention are described, wherein in different embodiments, like has adopted the similar element numbers of first association.In the following embodiments, a lot of details descriptions are for the present invention can better be understood.But those skilled in the art can recognize without lifting an eyebrow, wherein Partial Feature is omissible under different situations, or can be substituted by other elements, material, method.In some cases, the certain operations that the present invention is relevant does not show or describes in instructions, this is to be flooded by too much description for fear of core of the present invention, and to those skilled in the art, it is not necessary describing these associative operations in detail, and they can complete understanding associative operation according to the general technology knowledge of the description in instructions and this area.

In addition, the feature described in instructions, operation or feature can be in suitable arbitrarily mode in conjunction with forming various embodiments.Meanwhile, the each step in method description or action also can an apparent mode be carried out order exchange or adjustment according to those skilled in the art institute.Therefore, the various orders in instructions and accompanying drawing just, for the some embodiment of clear description, are not meant to be necessary order, and wherein certain order is mandatory except as otherwise noted.

Fig. 1 is the schematic diagram of the gas electronic control system of the anesthesia transmission system 100 of one embodiment of the present invention, and this electronic control system is used for controlling oxygen, laughing gas, air.This anesthesia transmission system 100 also comprises manual gas control system for subsequent use, and gas control system for subsequent use is mechanical type control system, for maintaining the normal operation of Anesthesia machine when the system power failure.As shown in the figure, the first knob 101 can be used for controlling the flow of the first gas 141; The second knob 102 can be used for controlling the flow of the second gas 142; The 3rd knob 103 can be used for controlling the flow of the 3rd gas 143.As shown in the figure, the first gas 141, the second gas 142, the 3rd gas 143 can be respectively oxygen, laughing gas, air.

Under automatically controlled pattern, such as normal power-up is used in the situation of Anesthesia machine, doctor selects or machine acquiescence is used automatically controlled pattern, and now the controller 105 in system normally moves.Can implement various functions by controller 105, carry out gas flow control with coordinating of gas electronic control system, receive the signal of user from various peripherals inputs, and output display signal is to display device, display is mainly patient monitoring data, can supply doctor (user) or patient to observe conditions.The electronic control system of gas can by hardware, firmware or software with and combination realize, can also be separatedly installed with anesthesia other control assemblies in transmission system 100.

Under automatically controlled pattern, anesthesia transmission system can also be utilized a signals input that touches dull and stereotyped 106 reception users (doctor, patient etc.).Anesthesia transmission system 100 also can be carried out demonstration information and receive signal input with a display 107 that has assembled touch-screen 108 under automatically controlled pattern.System can allow the anesthetic gases total amount of user's control inputs to patient.

Under automatically controlled pattern, after electronic code, outputed to controller 105 by the conditioning signal of knob 101,102,103 inputs respectively by supporting scrambler 111,112,113.Controller 105 by the encoded conditioning signal receiving respectively correspondence export to electronics proportioning valve 171,172,173, thereby corresponding control first gas 141, second gas 142, three gas 143 corresponding with it.

Under automatically controlled pattern, normally close valve 161,162,163 is all opened, thereby the first gas 141, the second gas 142, the 3rd gas 143 can flow to corresponding electronics proportioning valve 171,172,173 by the normally close valve corresponding with it respectively.And now normally open valve 151,152,153 is all closed, to prevent that the first gas 141, the second gas 142, the 3rd gas 143 from flowing out by mechanical needle-valve 131,132,133.Clutch coupling 121,122,123 makes respectively knob 101,102,103 depart from corresponding needle-valve 131,132,133, thereby prevents that user is delivered to needle-valve to the adjustment operation of knob.By above-mentioned system architecture, ensure that in the time that system is under automatically controlled pattern, only having that circuit of Electronic Control is that signal is unimpeded.The first gas 141, the second gas 142, the 3rd gas 143 is by the normally closed switch 161,162,163 of the opening electronics proportioning valve 171,172,173 of flowing through, and its flow is respectively by the conditioning signal control of knob 101,102,103 outputs.

Once system power supply stops or breaking down, or user selects to anaesthetize transmission system by operate in manual mode, still can control the flow of the first gas 141, the second gas 142, the 3rd gas 143 by knob 101,102,103 operations, but intrasystem control mode switching is mechanical type control.Under manual control model, controller 105, touch flat board 106, display 107, touch-screen 108, scrambler 111,112,113 or unavailable.

Being equipped with in the Anesthesia machine of mechanical type gas control system for subsequent use, no matter system normal power supply or power supply trouble occurs, can regulate gas flow by knob 101,102,103 is uninterrupted, to ensure the normal operation of whole system.Wherein knob is designed to optionally control electronics proportioning valve or needle-valve, can certainly separately control for it configures respectively a set of knob.Introduce the process of manual control model down-off control below.Manually, under control model, normally close valve 161,162,163 keeps cutting out, and normally open valve 151,152,153 is held open, thereby makes the first gas 141, the second gas 142, the 3rd gas 143 flow to the needle-valve 131,132,133 of mechanically controlled type.Clutch coupling 121,122,123 make knob 101,102,103 respectively the needle-valve corresponding with it 131,132,133 be connected, thereby the conditioning signal of exporting by knob-operated is delivered to needle-valve, directly control needle-valve to control the gas of the needle-valve of flowing through.

No matter anaesthetize transmission system in automatically controlled pattern or manual control model, the first gas 141, the second gas 142, the 3rd gas 143 can carry out flow measurement by corresponding flowmeter 181,182,183 respectively.Non-return valve 195,196,197 is respectively used to prevent the backflow of three road gases.San road gas intersection, measures by a total flow meter 198 flow that three road gases mix the rear mixed gas forming.In anesthesia transmission system 100, can also comprise evaporator 199, after anesthetic being flashed to gas, sneak into aforesaid mixed gas, flow in the lump patient.Gas in evaporator 199 shown in figure is sneaked in mixed gas after total flow meter 198, here the mixed gas being mixed by oxygen and balanced gas also can be called live gas, add on this basis anesthetic steam to form gaseous mixture, below for convenience of describing, this is not strictly distinguished, mixed gas can represent not containing the mixed gas of the anesthetic steam from anesthesia evaporator, also can represent the mixed gas containing from the anesthetic steam of anesthesia evaporator.

Mixed gas (comprising the anesthetic after three road gases and evaporation) flows into ACGO valve 185 subsequently.In some embodiments, ACGO valve 185 can be manually actuated valve selector switch, for mixed gas being switched between main respiratory system 186 and ACGO187 to circulation.ACGO can be used for being connected with assisted respiartion system.In other embodiments, ACGO valve 185 can be automatically controlled threshold switch, such as by driving gas control driver's valve, this by after embodiment in specifically describe.In other embodiment, the ACGO valve of electric-controlled type can be controlled by controller 105, touch flat board 106, display 107 or touch-screen 108.

Such as, user is by touching flat board 106 or touch-screen 108, or other external input equipments select/control mixed gas to flow to main respiratory system 186.The electronic signal of the operation correspondence that user exports drives or triggers one and select valve, and such as a bistable selector valve, thereby guiding driving gas promotion driver's valve changes the position of its inner piston.Driver's valve is activated and mixed gas is guided to one of them outlet, is communicated with that outlet of main respiratory system 186.Similarly, if fruit selects mixed gas to flow to assisted respiartion equipment,, by the corresponding electric signal of controlling of various input equipment output, make the piston movement of driver's valve inside to making mixed gas flow to ACGO.Below can further introduce the embodiment of the various valves, switch and the unitized construction that realize above-mentioned functions.

Fig. 2 is the schematic diagram of the gas electronic control system of the anesthesia transmission system 200 of another embodiment of the present invention.The electronic control system of this anesthesia transmission system 200 is used for controlling oxygen 241, laughing gas 242, air 243.This anesthesia transmission system 200 comprises stepper motor 251,252,253, for coordinating with needle-valve 231,232,233 function that realizes similar electronics proportioning valve.No matter anaesthetizing transmission system 200 is that knob 201,202,203 is respectively for controlling the flow of oxygen 241, laughing gas 242, air 243 in automatically controlled pattern or manual control model.In the time that user wants to regulate the flow of any road gas or total flow, as long as the corresponding knob of rotation.

Under automatically controlled pattern, anesthesia transmission system 200 realizes the flow control of gas by controller 205.Can implement various functions by controller 205, carry out gas flow control with coordinating of gas electronic control system, receive the signal of user from various peripherals inputs, and output display signal is to display device, display is mainly patient monitoring data, can supply doctor (user) or patient to observe conditions.Anesthesia transmission system 200 can also be utilized a signals input that touches dull and stereotyped 206 reception users (doctor, patient etc.).Anesthesia transmission system 200 also can be carried out demonstration information and receive signal input with display 207 and/or touch-screen 208 under automatically controlled pattern.System can allow user's control inputs to the electronic control system of patient's anesthesia total amount gas can by hardware, firmware or software with and combination realize, can also with anesthesia transmission system 200 in other control assemblies be separatedly installed.

Under automatically controlled pattern, after electronic code, outputed to controller 205 by the flow regulating signal of knob 201,202,203 inputs respectively by supporting scrambler 211,212,213.The encoded conditioning signal receiving is exported to respectively one or above stepper motor 251,252,253 by controller 205.Thereby stepper motor 251,252,253 is adjusted the flow of needle-valve 231,232,233 corresponding control oxygen 241, laughing gas 242, air 243.

Under automatically controlled pattern, for instance, in the time of user's manual adjustments knob 201, the flow regulating signal of output is carried out electronic code by scrambler 211.Subsequently, controller 205 is exported corresponding control signal to stepper motor 251 according to the conditioning signal after the electronic code receiving, thereby Driving Stepping Motor 251 is according to flow regulating signal metering pin valve 231, and then adjusting is by the flow of the oxygen 241 of this needle-valve.Clutch coupling 221,222,223 departs from corresponding needle-valve 231,232,233 by knob 201,202,203 under automatically controlled pattern, to prevent that the adjustment operation of knob is directly delivered to each self-corresponding needle-valve and causes that operation is chaotic.

Under manual control model, or system power supply stops or breaking down, controller 205, to touch the electronic units such as dull and stereotyped 206, display 207, touch-screen 208 or scrambler 211,212,213 or/and stepper motor 251,252,253 all unavailable or produce and break down.Now knob 201,202,203 still can the continual flow regulation for oxygen 241, laughing gas 242, air 243, be that it still can regulate gas flow in response to user operation, just adjusting is now to complete by the mechanical adjustment structure of internal system.Concrete, now system is switched under manual control model, clutch coupling 221,222,223 is connected knob 201,202,203 respectively with corresponding needle-valve 231,232,233, thereby user is directly delivered to corresponding needle-valve 231,232,233 to the adjustment operation of knob 201,202,203, and then control the flow of corresponding gas of the needle-valve of flowing through, such as oxygen 241, laughing gas 242, air 243.

In some embodiments, clutch coupling 221,222,223 can also depart from needle-valve 231,232,233 by control step motor 251,252,253, under manual control model.In some embodiments, can further include switching valve or its combination, for the work at present pattern according to system, air-flow is guided to different valves, than outfit electronic flow valve as shown in Figure 1 and the system of needle-valve.

No matter anaesthetize transmission system 200 in automatically controlled pattern or manual control model, oxygen 241, laughing gas 242, air 243 can carry out flow measurement by corresponding flowmeter 281,282,283 respectively.Flow can carry out electronic type demonstration by display 207, or shows by mechanical flow pipe.Non-return valve 295,296,297 is respectively used to prevent the backflow of three road gases.San road gas intersection, measures by a total flow meter 298 flow that three road gases mix the rear mixed gas forming.In anesthesia transmission system 200, can also comprise evaporator 299, after anesthetic being flashed to gas, sneak into aforesaid mixed gas, flow in the lump patient.

As previously mentioned, the mixed gas of output (comprising the anesthetic after mixed gas and the evaporation that three road gases form) flows into ACGO valve 285 subsequently.ACGO valve 285 can be automatically controlled threshold switch, such as by driving gas control driver's valve.The ACGO valve 285 of electric-controlled type can be controlled by controller 205, touch flat board 206, display 207 or touch-screen 208.

Such as, user is by touching flat board 206 or touch-screen 208, or other external input equipments select/control mixed gas to flow to ACGO287.The electronic signal of the operation correspondence that user exports drives or triggers one and select valve, and such as a bistable selector valve, thereby guiding driving gas promotion driver's valve changes the position of its inner piston.Driver's valve is activated and mixed gas is guided to one of them outlet, is communicated with that outlet of ACGO287, and then mixed gas can be drained to assisted respiartion equipment or other equipment by ACGO287.Similarly, if fruit selects mixed gas to flow to main respiratory system 286,, by the corresponding electric signal of controlling of various input equipment output, make the piston movement of driver's valve inside to making mixed gas flow to main respiratory system 286.

Fig. 3 is the schematic perspective view of the Anesthesia machine of one embodiment of the present invention.This Anesthesia machine 300 has configured three flow regulation selector switchs 350, is respectively used to control the flow of oxygen, laughing gas and air.This Anesthesia machine 300 also comprises main respiratory system 310, anesthesia evaporator 330 and other anesthesia transmission system elements.Anesthesia machine 300 can be loaded in go-cart 340, and go-cart can provided with wheels 345, so that mobile.Electronic console 320 can be used for providing intuitively the information about gas flow or anesthesia transmission procedure, state to user.Electronic console 320 can also be the display with touch function, for can further comprising ACGO375 and ACGO valve (or ACGO selector valve, figure does not show) by aobvious Anesthesia machine 300.In some embodiments, ACGO valve can comprise an automatically controlled selector valve, such as an automatically controlled selector valve that optionally piston of driver's valve inside is switched to diverse location by automatically controlled driving gas.ACGO valve can be also manual manipulation or pneumatic control selector valve.

Fig. 4 is the local enlarged diagram of Anesthesia machine shown in Fig. 3.The electronic type flow of this Anesthesia machine 400 selects knob 450,451,452 under manual adjustments pattern, to select knob as mechanical flow, no matter under which kind of pattern, can regulate by 450,451,452 pairs of gas flows of knob.As shown in the figure, the patient parameter monitoring and other relevant informations can be presented to doctor by a display 477.Display 477 can also be the display with touch-screen, and doctor can control the operation of Anesthesia machine 400 by display 477.In specific embodiment, flow selects knob 450 to can be used for controlling the flow of oxygen, and flow selects knob 451 to can be used for controlling the flow of laughing gas, flow selects knob 452 to can be used for controlling the flow of air, and user reaches by rotating these knob control gases the flow of wanting.

Flow quantity display unit 460 can be used for showing intuitively the present flow rate that is conditioned gas.Flow quantity display unit 460 can be electronic type, such as the flowtube of simulating on display screen; Or can be also mechanical flowtube; Or the flow quantity display unit of two kinds of forms is set in system simultaneously; Also or this flow quantity display unit 460 under different operation modes, be switched to respectively corresponding display mode, such as showing flow at automatically controlled pattern down-off display unit by electronical display mode, and manually under control model, showing with the variation of mechanical type scale the flow that is conditioned gas, to can normally show gas flow under control model under automatically controlled pattern and manually.As shown in FIG., each flow selects knob 450,451,452 respectively to there being a flowtube, thereby can show separately the flow of every kind of gas.

Although shown the Anesthesia machine 400 of selecting knob 450,451,452 with three flows in figure, but be appreciated that, knob more or smaller amounts all can be set as required, does not represent that the present invention only limits to arrange three flows and selects knob.The object regulating is also not limited to three kinds of gases, can be more or still less, can also control other fluids beyond gas.Although shown a corresponding flow that regulates a kind of gas of knob in figure, but in some embodiments, also can carry out flow regulation to certain gas by more than one knob, or by internal mechanical structure multiplexing/switched design, knob can be for regulating the flow of multiple gases.

Jet system of the present invention, or claim gas Flowrate Control System, fluid control systems, fluid flow control system, flow control system, can be applicable to, in the current-controlled machine of various needs, equipment, not limit to and be applied to Anesthesia machine.

Although the flow of various gases can pass through knob 450,451,452 manual operation controls in Anesthesia machine, or the mixed gas forming after the mixing of various gas can be directed into main respiratory system ACGO475 by electronic control mode.Be in embodiment at some, user can utilize the electronic input apparatus control mixed gass such as electronic switch, button, slide block, touch-screen, touch flat board (containing the anesthetic after evaporation) to flow to main respiratory system or ACGO.

Fig. 5 is the system chart of a kind of Anesthesia machine of the present invention.This Anesthesia machine 500 comprises three electronic flow control valves 511,512,513, is respectively used to control the flow of the oxygen (O2) 521 that enters into Anesthesia machine, the flow of laughing gas (N2O) 522, the flow of air (AIR) 523.This Anesthesia machine 500 (or claiming anesthesia transmission system 500) also comprises three mechanical flow operation valves 501,502,503 for subsequent use, and it also can be for controlling the flow of the oxygen (O2) 521 that enters into Anesthesia machine, the flow of laughing gas (N2O), the flow of air (AIR).When Anesthesia machine 500 is during in normal power-up running status, can normal power supply during to each operational module of Anesthesia machine 500 such as external AC power supply 560 or electric battery 561, Anesthesia machine 500 can be controlled by being controlled by the electronic flow control valve 511,512,513 of outside electronic flow selector switch the flow of gas.Doing necessary conversion or inversion by power panel 579, mainboard 575, the electric power of inputting from AC power 560 or electric battery 561 outputs to gas flow template 550.Gas flow template 550 comprises the electronic/mechanical element of various control/monitoring Anesthesia machine 500 gas flows.

The gas flow template 550 of Anesthesia machine 500 can comprise FPGA unit, CPU element, microprocessor unit, logical circuit, driving circuit, D/A conversion unit, AD conversion unit, motor driver, power switch, input equipment, optical sensor, visual indicator, display, solenoid, stepper motor, touch dull and stereotyped, various function element/module/the unit such as peripheral component, gas flow template 550 also can only comprise the interface with above-mentioned various element/module/unit, and these element/module/unit scattering devices or concentrated setting are in Anesthesia machine 550 inner/outer.In addition, gas flow template 550 can comprise or be connected to various motor position switches, LED, needle valve switch, source of the gas and/or other selection input medias.Doctor or user can come to carry out alternately with Anesthesia machine by the operation input that is provided for controlling one or more gas flows.For instance, the operation that doctor or user can control flow by the input of electronic flow selector switch.Electronic flow selector switch can comprise mechanical knob and rotary encoder.

When anaesthetizing transmission system or Anesthesia machine 500 in power-up state, user can use/operate this system under automatically controlled pattern, or can initiatively select as required manual mode to operate.When anesthesia transmission system is in power-down state, this anesthesia transmission system can be used under manual mode.In automatically controlled pattern, enter three kinds of gases of system, comprise oxygen 521, laughing gas 522 and air 523 can flow through electronic flow control valve 511,512,513 and/or oxygen ratio controller (ORC) 525 and/or non-return valve 530 (check valves) and flow sensor.In manual mode, mechanical flow operation valve that oxygen 521, nitrous oxide 522 and air 523 can be flowed through for subsequent use 501,502 and 503, oxygen ratio controller 525 and/or counterbalance valve 527 (backpressure valve).

In various embodiments, user can be started in total flow, increase gas and observe the impact of every kind of gas for total flow simultaneously gradually by zero flow, thereby finally reaches the target rate of oxygen 521, laughing gas 522 and air 523.In other variant embodiment, user reaches from each that has that the oxygen 521 of " ground state " flow of system default starts to adjust three road gases the flow of wanting, and obtains the target rate of oxygen 521, laughing gas 522 and air 523 with this.Oxygen ratio controller 525 can ensure safe clinically oxygen and the ratio of laughing gas.Non-return valve 530 can prevent by the potential caused system Nei Ge of high pressure following current road gas backstreaming.

User can select to be supplied to patient's oxygen and the flow of air gas mixture (air is as balanced gas).User also can select the flow (now laughing gas is as balanced gas) that replaces air to be supplied to patient's laughing gas.In certain embodiments, air and laughing gas can be input in system as balanced gas simultaneously.Under manual mode, select no matter what user does, the amount of oxygen that meets safety requirements can ensure to be automatically supplied to patient by oxygen ratio controller 525.Under automatically controlled pattern, can guarantee by control circuit the security of operation.

In any flow control mode, after non-return valve 530, the air-flow of three kinds of gases can merge that become can be by the single air-flow of total flow instrumentation amount, and the total flow meter 537 of flowing through.Anesthesia evaporator 540 can be vaporized into gas by liquid anesthetic.Can use T-valve 535 (three-way selector valve) to select to adopt air flow path corresponding to pattern to be communicated with total flow meter 537 with current system, for example, guide air flow stream mistake one of from stand-by machine formula flowrate control valve 501,502,503 and 511,512,513 liang of groups of electronic flow control valve.Optionally, the replaceable one-tenth of T-valve is one or more often opens and/or the combination of normally close valve.Other forms of switching valve system can be used for substituting T-valve 535 and/or Chang Kai and/or normally close valve.

The mixed gas that three road gases mix and the anesthesia steam being injected in gas circuit can flow to main respiratory system 586 or ACGO587 through the guiding of ACGO valve 585.ACGO valve 585 can comprise a driver's valve, and driver's valve switches the flow direction of mixed gas according to being controlled by the driving gas of automatically controlled selector valve module 588.Automatically controlled selector valve module 588 can comprise one and above automatically controlled selector valve, and it is controlled by other electric signal or driving circuit from the electric signal of CPU or gas flow template 550.

Be in embodiment at some, ACGO valve 585 comprises the driver's valve of a gas-powered, such as a guiding reciprocable valve.Driver's valve can be driven and mixed gas is guided or be switched to main respiratory system 586 or ACGO587.So to guiding to main respiratory system 586 or ACGO587, determined by the driving gas that is controlled by automatically controlled selector valve module 588.In some embodiments, the driver's valve main respiratory system 586 that can by default mixed gas be led, can realize this purpose by the biasing of flexible member.And by guiding driving gas into driver's valve through automatically controlled selector valve module 588, mixed gas can then flow to ACGO587.

Driver's valve can comprise valve body and piston, and wherein piston can to-and-fro movement in valve body.Valve body comprises a mixed gas entrance and two mixed gas outlets, and wherein mixed gas entrance is used for introducing mixed gas, and mixed gas can be fresh air or the next gas of quick oxygenation module transmission that front end anesthetic gases commingled system transports.One of them mixed gas outlet is for mixed gas is drained to main respiratory system 586, and another mixed gas outlet is for being drained to ACGO587 by mixed gas.When piston is during in primary importance, mixed gas is drained to main respiratory system 586, and when piston movement is during to the second place, mixed gas is drained to ACGO587.By default, any one that piston can be in two positions, system state in acquiescence mixed gas is drained to main respiratory system 586 or ACGO587 one of them.Can select to arrange the system state under default situations according to different demands.In one embodiment, valve body also comprises a flexible member, and this flexible member is arranged on one end of piston, for control piston by default in primary importance.Valve body also comprises a driving gas entrance, for introducing driving gas, piston actuated is arrived to the second place.In some embodiments, valve body can comprise two driving gas entrances, and driving gas is introduced and can be realized driven plunger arrival primary importance or the second place from different driving gas entrances.In one embodiment, driving gas can the driver's valve network based on by a dedicated three-way selector valve control be optionally directed to wherein one end of the opposite end of piston.This dedicated three-way selector valve can be a kind of self-locking, bistable selector valve.

Driver's valve can comprise one or above pressure safety valve (PSV) or/and position detecting switch.Driver's valve can further include the various element of various forms of sheaths for the protection of valve, such as switch protection cover is for protective position detector switch.

Under automatically controlled pattern, the flow control selector switch associated with stand-by machine formula flowrate control valve (being needle-valve in embodiment) 501,502 and 503 can be deactivated or be retracted into internal system.According to system, whether power down or user have selected corresponding operating, system automatically or enter manual mode according to instruction, now the flow control selector switch associated with mechanical flow operation valve 501,502 and 503 can be activated, ejection, release etc. and available.Some elements that are listed in the Anesthesia machine 500 of element declaratives 590 do not describe in detail in instructions.In addition, various assembly, testing apparatus, watch-dog and/or the opertaing devices that can be used for anaesthetizing transmission system, gas delivery system, liquid transfer system and/or other related systems, can add as required, supplement and/or replace shown in intrasystem assembly.

Fig. 6 is the schematic diagram of the Anesthesia machine of one embodiment of the present invention.This Anesthesia machine 699 comprises two electronic flow selector switchs 651 and three mechanical flow selector switchs 660, for control the flow of three road gases under different operation modes.This Anesthesia machine 699 also comprises go-cart 640 and the display 620 of main respiratory system 610, ACGO675, anesthesia evaporator 630, provided with wheels 645.Go-cart 640 and/or wheel 645 can make the movement of Anesthesia machine 699 more convenient.Display 620 can provide the information about flow and/or anesthesia transmitting procedure to operator.In addition, display 620 also can comprise touch display screen, can be for user by screen input control information.

Under automatically controlled pattern, three mechanical flow selector switchs 660 can be deactivated or be retracted into the inside of Anesthesia machine 699.According to system whether power down or user whether selected corresponding operating, system enters manual mode, mechanical flow control selector switch 660 can be activated, ejection, release etc. and available.

The mixed gas regulating through electronic flow selector switch 651 or stand-by machine formula flow selector switch 660, by determining to be sent to main respiratory system 610 or the ACGO675 of Anesthesia machine 699 according to the slave mode of this ACGO valve after automatically controlled ACGO valve.As previously mentioned, ACGO valve can utilize automatically controlled driving gas to promote the piston in driver's valve and switch the flow direction of mixed gas.

Fig. 7 is the local enlarged diagram of the Anesthesia machine of one embodiment of the present invention.This Anesthesia machine 700 is similar to Anesthesia machine 699 shown in Fig. 6, comprises two electronic flow selector switchs 715,717, is respectively used to control the flow of oxygen and balanced gas.Concrete, select laughing gas as balanced gas when system, two electronic flow selector switchs 715,717 are respectively used to control the flow of oxygen and laughing gas; Select air as balanced gas when system, two electronic flow selector switchs 715,717 are respectively used to control the flow of oxygen and air.The display panel 730 of Anesthesia machine 700 can be used for showing other information that patient's monitoring information, gas flow, anaesthesia process are correlated with etc.Various screen manipulation buttons 740 can be realized user profile input, for changing display format, the state etc. of display panel 730, or for controlling the operation of Anesthesia machine.

As shown in Figure 7, in the time that selector switch 710 is chosen " O2+N2O ", show that in current system, selected balanced gas is laughing gas, can regulate respectively the flow of oxygen and laughing gas by electronic flow selector switch 715,717.In the time that selector switch 710 is chosen " O2+Air ", show that in current system, selected balanced gas is air, can regulate respectively the flow of oxygen and air by electronic flow selector switch 715,717.According to the selected location of selector switch 710, what correspondingly traffic monitoring/monitoring means, the gas ratio detection means of coupling can be supporting operationalizes.Such as in the time that selector switch 710 is chosen " O2+N2O ", oxygen flow indicator 725 and laughing gas flow indicator 727 start respectively for showing that the flow summation flowmeter indicator 720 of oxygen and laughing gas shows oxygen and the mixed total flow of laughing gas.

Although illustrated embodiment has been shown two electronic flow selector switchs 715 and 717, can use the arbitrary number flow selector switch associated with gas.For example, configurable flow control system makes it have 1,2,3,4 ... or the electronics of N kind gas or liquid and manual flow control for subsequent use.In certain embodiments, configurable more than one flow selector switch (as, knob, toggle switch, dial (of a telephone), slide block, switch) control the flow of same gas.Can select to be selected the arbitrary number of knob control and the gas of combination by flow control by more selector switch 710 and/or similar multiselect position selector switch.Flow selector switch can comprise and/or use any analog or digital selection mechanism for selecting flow, includes but not limited to the knob shown in figure.

In various embodiments, can select mixed gas to flow to assisted respiartion equipment through ACGO by an ACGO selector switch 750.Can certainly manipulate button 740, display panel 730 etc. and realize by screen the selection/control of this kind of function.Once ACGO selector switch 750 is pressed or is selected, valve in automatically controlled selector valve module 588 is controlled and driving gas is delivered to the relevant position of driver's valve, thereby driver's valve moves to the second place, and then the mixed gas of the ACGO valve of flowing through is guided to ACGO.

Fig. 8 is the schematic diagram of the control panel of the Anesthesia machine of one embodiment of the present invention.This control panel 800 comprises ACGO875 and ACGO selector switch 850.ACGO selector switch 850 can be electronic selector, can be also mechanical selector (manual activation).The mixed gas forming by various selections can under the selection of driver's valve, flow to main respiratory system or ACGO one of them.Similarly, driver's valve can be also pneumatic valve, is controlled by the driving gas of the automatically controlled selector valve module of flowing through.

Still as shown in Figure 8, Anesthesia machine can also comprise three mechanical flow selector switchs 881,882,883, for independently controlling respectively the flow of three road gases.In some embodiments, in the time that Anesthesia machine normal power supply operation and user specially do not select manual mode, Anesthesia machine works under automatically controlled pattern.Under automatically controlled pattern, user can be controlled/be regulated by two electronic flow selector switchs 815,817 flow of oxygen and balanced gas.Similar with Fig. 7 illustrated embodiment, balanced gas can be selected by selector switch, can be laughing gas or air here.Electronic Display Panel 830 can be used for showing monitoring information or the flow monitoring relevant information relevant to patient.Various screen manipulation buttons 840 are as similar available in aforementioned screen manipulation button 740.

When Anesthesia machine power-off or when power fail or user occur specially selecting manual mode, Anesthesia machine works under manual mode.Under manual mode, flow and the total flow of in Anesthesia machine, transmitting Ge road gas can be opened control by manual panel 855.Now, electronic console 830, screen manipulation button 840, electronic flow selector switch 815 and 817 and other electronic devices and components/module/unit unavailable, or select manual mode voluntarily under normal power supply time, these electronic units wherein part or all can be cancelled or stop using.

Manually panel 855 can comprise a summation flowmeter indicator 890, manual mode selector switch 885 and one and an above mechanical flow selector switch, as mechanical flow selector switch 881,882,883.Manual mode selector switch 885 can be the plunger of a loading spring.Mechanical flow selector switch 881,882,883 only can be designed as and just ejects under manual mode, under automatically controlled pattern, stashes.

Fig. 9 A is the schematic diagram of the ACGO valve system that adopts of a kind of Anesthesia machine of the present invention in the first state.This ACGO valve system 900 comprises a driver's valve 910, and as shown in the figure, this driver's valve 910 arrives the first state under the driving of the first driving gas 950, makes mixed gas 905 flow to main respiratory system 915.Please also refer to Fig. 9 B, be the schematic diagram of the ACGO valve system 910 shown in Fig. 9 A while being driven into another state (i.e. the second state).In this ACGO valve system 910, comprise a piston 911, between the corresponding primary importance of the first state that it can illustrate respectively in Fig. 9 A and 9B and the corresponding second place of the second state, move.For mixed gas 905 being transferred to main respiratory system 915, the reversal valve 930 (in order to distinguish mutually with another reversal valve 940, can be called the first reversal valve 930 here) of an Electronic Control locking can be controlled the first driving gas 950 and flow to the first driving gas air intake opening on driver's valve 910.The reversal valve 940 (in order to distinguish mutually with previous reversal valve 930, can be called the second reversal valve 940) of electric-controlled locking can prevent that the second driving gas 951 from flowing to the second driving gas import on driver's valve 910.Therefore, driving gas 950 can driven plunger 911 be transformed into primary importance, and this mixed gas 905 piston channel of flowing through is transferred to main respiratory system 915.In various embodiments, the first driving gas 950 and the second driving gas 951 can be identical driving gases, can be from identical source of the gas, and air-flow is by the first locking reversal valve 930 and the second locking reversal valve 940 co-controllings.Here for the convenience on describing, to various flows to driving gas done differentiation nominally, such as being divided into the first driving gas and the second driving gas, but in fact gas itself can be a kind of, be that concrete controlled object, direction etc. are different, therefore in Fig. 9 A and Fig. 9 B, driving gas itself do not carried out to differentiation nominally.

Fig. 9 B is the schematic diagram of the ACGO valve system that adopts of a kind of Anesthesia machine of the present invention in the second state.Wherein, driver's valve 910 is driven into the second state by the second driving gas 951, and mixed gas 905 is drained to ACGO920 like this.For mixed gas 905 is switched to ACGO920, electric-controlled locking reversal valve 930 can prevent that driving gas 950 from flowing to the first driving gas air intake opening on driver's valve 910.Electric-controlled locking reversal valve 940 can allow the second driving gas 951 to flow to the second driving gas air intake opening on driver's valve 910.The second driving gas 951 driven plunger 911 are transformed into the second place, and on this position, mixed gas 905 flows to ACGO920 through the second piston channel.

As shown in the figure, first piston passage capable of being is connected to main respiratory system, and the second piston channel can be connected to ACGO.Switch between primary importance and the second place by driven plunger 911, and make the mixed gas 905 that is input to ACGO valve can be communicated with respectively first piston passage and the second piston channel.Piston 911 also has the structure that prevents that first piston passage and the second piston channel are communicated with.Therefore, it is independent that main respiratory system and ACGO can keep mutually, and under a state, mixed gas can only be from flowing to one of them.

Can find out by comparison diagram 9A and Fig. 9 B, by controlling selectively turning to/switching of locking switching valve 930 and locking switching valve 940, mixed gas 905 can be transported to main respiratory system 915 or ACGO920.Locking switching valve 930 and locking switching valve 940 can be by the manual interface controls of Electronic Control interface and/or a backup, under the automatically controlled pattern of Anesthesia machine and manual mode, control switching valve respectively by corresponding electronic control panel or mechanical, hand-driven control panel and switch between two states.The common gas vent operation valve of the Anesthesia machine of the above-mentioned embodiment of the present invention and employing thereof can be by reversal valve with electronic control mode work, system is corresponding rapidly, thereby the mixed gas of the driver's valve 910 of flowing through can have high flow rate relatively, be mixed gas and/or the anesthetic that common gas vent operation valve that Anesthesia machine of the present invention adopts by it can provide relative high flow rate, and there is good bio-compatibility, can be in oxygen-enriched environment good operation, be suitable for transmission and there is potential corrosive anesthetic or anesthetic steam.

Refer again to Fig. 9 A and Fig. 9 B, driving gas 950 and 951 can be gas-pressurized, as compressed oxygen or pressurized air. Locking reversal valve 930 and 940 can be a kind of stable electropneumatic valve that opens or closes state that is configured to keep.An electronic signal (from user's operation or controller) can make each locking reversal valve 930 and 940 switching states.Be applied to the concrete condition of Anesthesia machine according to the embodiment of the present invention, the locking reversal valve 930 and 940 here should be configured at any time only have one of them to open.

Figure 10 is the perspective view for the driver's valve of ACGO valve in the anesthesiaing system of one embodiment of the present invention.This driver's valve 1000 comprises valve body 1010, and this valve body 1010 comprises a piston room 1015.This piston room 1015 is communicated with mixed gas entrance 1025, ACGO1035 and main respiratory system interface 1030 respectively.The piston 1020 that driver's valve 1000 comprises is contained in piston room 1015, and can be in the interior to-and-fro movement of piston room 1015.Piston 1020 can comprise first valve passage 1022 being communicated with main respiratory system interface 1030, and a second valve path 10 21 being communicated with ACGO1035.

When the piston 1020 in driver's valve 1000 is in primary importance time, described the first valve passage 1022 is communicated with mixed gas entrance 1025, thereby mixed gas entrance 1025 is communicated with main respiratory system interface 1030, mixed gas is exported from main respiratory system interface 1030.When the piston 1020 of driver's valve 1000 is during in the second place, described second valve path 10 21 is communicated with mixed gas entrance 1025, thereby mixed gas entrance 1025 is communicated with ACGO1035, and mixed gas is exported from ACGO1035.So, can between primary importance and the second place, switch by the piston 1020 in driven plunger room 1015, realize by mixed gas be drained to main respiratory system interface 1030 or ACGO1035 one of them.

Described piston 1020 can be under being exerted pressure of driving gas and is moved in the interior generation of piston room 1015.One end of piston room 1015 can be communicated with the first driving gas entrance 1040, and the relative other end is communicated with the second driving gas entrance 1045, and the first driving gas entrance 1040 and the second driving gas entrance 1045 are isolated mutually.Driving gas is optionally from the first driving gas entrance 1040 and second driving gas entrance 1045 one of them inflow piston room 1015, thereby push inner piston 1020 to the other end from one end of piston room 1015 accordingly, therefore can make mixed gas through the 1015 interior formation of piston room flow to corresponding outlet when prepass, main respiratory system interface 1030 or ACGO1035 both one of.

Piston 1020 can comprise piston rod 1060, and piston rod 1060 is arranged at one end of piston 1020 or two ends (in Figure 10, only have the piston rod of one end visible).Piston rod 1060 triggers primary importance detector switch 1065 or second place detector switch 1070 in can moving to primary importance or the second place according to piston 1020 in piston room 1015, thereby the signal that system is exported by detector switch obtains the state of current ACGO valve.ACGO valve or driver's valve 1000 can also comprise sheath 1075, thus the protection that detector switch 1070 or 1065 is carried out in physical arrangement.

The first valve passage 1022, second valve path 10 21, piston room 1015 and various gas inlet-outlet, as one of them or the part of mixed gas entrance 1025, the first driving gas entrance 1040, the second driving gas entrance 1045, main respiratory system interface 1030 or ACGO1035/all can comprise/configure pressure safety valve (PSV).Such as, mixed gas entrance 1025 can be connected to a pressure safety valve (PSV) 1050, to guarantee the certain air pressure of the interior maintenance of mixed gas entrance 1025, such as remaining on 37.9 kpa pressures.In another example, ACGO1035 can be connected to pressure safety valve (PSV) 1055, to guarantee that this top hole pressure remains on below certain pressure, such as remaining on below 11 kPas.By the different set to pressure safety valve (PSV), can make the pressure of various element/interfaces in this driver's valve 1000 maintain in certain or certain section of force value/following/more than.

Figure 11 A is the diagrammatic cross-section of a kind of driver's valve of the present invention.This driver's valve 1100 comprises mixed gas entrance 1125, main respiratory system interface 1130, ACGO1135, moveable piston 1120 and piston room 1115.Piston 1120 shown in figure is in primary importance in piston room 1115, piston room 1115 is communicated with mixed gas entrance 1125, mixed gas is introduced in piston room 1115, piston room 1115 is also communicated with main respiratory system interface 1130, ACGO1135 respectively, with optionally by above-mentioned mixed gas from main respiratory system interface 1130, one of them output of ACGO1135.Piston 1120 comprises the first valve passage 1133 and the second valve passage 1137 that are separated from each other, and this first valve passage 1133 is communicated with main respiratory system interface 1130, and second valve passage 1137 is communicated with ACGO1135.

When the piston 1120 in driver's valve 1100 is in primary importance time, described the first valve passage 1133 is communicated with mixed gas entrance 1125, thereby mixed gas entrance 1125 is communicated with main respiratory system interface 1130, mixed gas is exported from main respiratory system interface 1030.And now mixed gas entrance is not communicated with second valve passage 1137, mixed gas cannot be exported from ACGO1135.

Piston 1120 comprises around the O-ring seal 1124 on it, for isolated main respiratory system interface 1130 and these two delivery outlets of ACGO1135, and driving gas and this two delivery outlets is isolated.Driving gas can be exerted pressure from any one end of the opposite end of piston 1120, thereby pushes piston 1120 to the other end, such as pushing piston 1120 to the second place shown in Figure 11 B from the primary importance shown in Figure 11 A.Specifically, the pressure that driving gas is applied in gap 1191 can make piston 1120 move to primary importance as shown in Figure 11 A.Similarly, the pressure that driving gas is applied in gap 1192 can make piston 1120 move to primary importance as shown in Figure 11 B.

Piston 1120 can comprise piston rod 1160, and piston rod 1160 is arranged at one end or the two ends of piston 1120.Piston rod 1160 can move to according to piston 1120 corresponding triggering primary importance detector switch 1165 or second place detector switch 1170 in primary importance or the second place in piston room 1115, thereby the signal that system is exported by detector switch obtains the state of current ACGO valve.ACGO valve or driver's valve 1100 can also comprise sheath 1175, thus the protection that detector switch 1170 or 1065 is carried out in physical arrangement.Pressure safety valve (PSV) 1150,1155 or similarly valve can be used for being arranged on each interface, element, passage etc. in system to be located, with the pressure at each main points place in restriction system.

Figure 11 B is diagrammatic cross-section when driver's valve 1100 is positioned at the second place shown in Figure 11 A.Now described second valve passage 1137 is communicated with mixed gas entrance 1125 and is connected to ACGO1135.Comparison diagram 11A and Figure 11 B can find out, change between primary importance and the second place by the piston 1120 in driven plunger room 1115, and what mixed gas was controlled is exported by main respiratory system interface 1130 or ACGO1035.

Figure 12 is the principle schematic of the valve system of controlling for ACGO of another embodiment of the present invention.This valve system 1200, or valve module 1200 comprises driver's valve 1210.This driver's valve 1210 is spring-loaded pneumatic valve, and its medi-spring 1240 is configured to apply biasing (pressure) to driver's valve 1210, can allow mixed gas 1205 to flow to main respiratory system 1215 like this at the driver's valve 1210 of default location.Electronic Control reversal valve 1230 can optionally allow driving gas 1250 to flow into driver's valve 1210.At the first state shown in figure, reversal valve 1230 can prevent that driving gas 1250 from flowing to driver's valve 1210.Accordingly, the piston that can switch back and forth of driver's valve inside can allow mixed gas 1205 to flow to the first valve passage to main respiratory system 1215.

Contrary, when valve system is in the second state time, reversal valve 1230 can allow driving gas 1250 to flow into the introducing port on driver's valve 1210.Thereby the pressure of driving gas 1250 can cause reversal valve 1210, inner moveable piston moves Compress Spring 1240.Driving gas 1250 makes inner moveable piston transform to the second place, and in the time of this position, the mixed gas 1250 second valve passage of flowing through enters ACGO1220.So mixed gas 1205 can be controlled selectively for turning to main respiratory system 1215 or ACGO1220, this depends on the electronic signal of controlling reversal valve 1230.The spring 1242 of reversal valve 1230 can be used for discharging the gas being trapped in driver's valve 1210.

Figure 13 A is the structural representation of valve system in the first state (state 1) of controlling for ACGO of another embodiment of the present invention.Valve system 1300 comprises driver's valve (or reversal valve) 1320,1330 and 1340, and a T-valve 1310.Under this first state, mixed gas 1305 is fed to main respiratory system 1315 instead of ACGO1399 (please refer to Figure 13 B).As shown in the figure, the first driver's valve 1320 can be by flexible member, and for example in figure, the spring 1323 on first driver's valve 1320 left sides applies bias pressure.Combination gas physical efficiency is passed through the first driver's valve 1320 under the default conditions of system like this.Similarly, the second driver's valve 1330 can be applied biasing by the flexible member on the right 1331, and gas can pass through the second driver's valve 1330 by default like this.Driver's valve in present embodiment and aforementioned or aftermentioned embodiment can be the valve that reversal valve, reciprocable valve etc. arbitrarily can switched system internal gas flow to.

A T-valve 1310 can switch between the first state and the second state.At the first state, see Figure 13 A, T-valve can guide driving gas to pass through smoothly the first reversal valve 1320 along direction shown in arrow.At the first state, the left side 1333 that driving gas also can be directed into the second reversal valve 1330 is simultaneously to drive the second reversal valve 1330 to close.Therefore,, under the first state, driving gas can be by the first reversal valve 1320 and by the second reversal valve 1330.

At the first state, driving gas first reversal valve 1320 of flowing through enters the left side 1343 of the 3rd reversal valve 1340.Driving gas drives the piston of the 3rd reversal valve 1340 to be transformed into primary importance.When the 3rd reversal valve 1340 is positioned at primary importance, mixed gas 1305 can enter main respiratory system 1315 by the 3rd reversal valve 1340.

Figure 13 B is the structural representation of valve system in the second state (state 2) of controlling for ACGO of another embodiment of the present invention.In the time that this T-valve 1310 is switched to the second state by Electronic Control, driving gas can flow through the second reversal valve 1330 under implied terms.Driving gas also flows into the right side 1321 of the first reversal valve 1320 simultaneously, thereby drives its internal piston to turn to Compress Spring that the first reversal valve 1320 cuts out.Therefore,, at the second state, driving gas can and can not pass through the first switching valve 1320 by the second switching valve 1330.

Under the second state, driving gas second reversal valve 1330 of flowing through enters the 3rd reversal valve from right side 1341.Driving gas can cause the piston movement of the 3rd reversal valve 1340 to transfer to the second place.In the time that the 3rd reversal valve 1340 is switched to the second place, mixed gas 1305 can enter ACGO1399 by the 3rd reversal valve 1340.

Therefore, by comparison diagram 13A and Figure 13 B, can find out, mixed gas 1305 can be switched to main respiratory system 1315 or ACGO1399 according to the state of T-valve 1310 and by automatically controlled mode.The state of this T-valve 1310 can carry out switching controls by electronic input signal.Electronic input signal can be produced by the automatic generation of controller or response user's selection.For example, it is main respiratory system 1315 or the ACGO1399 that is connected to fuselage configuration that user can select Anesthesia machine by an electronic signal input media, electronic signal input media can be a button, switch, switch, slide block, touch pad, touch-screen etc., and the mode of input can be machinery rotation, touch discrepancy, voice, gesture etc.

Figure 14 is the perspective view of the interior drive valve system of valve system of one embodiment of the present invention.This drive valve system 1400 can be a multichannel solenoid control valve or solenoid valve or manifold.This drive valve system 1400 is for optionally guiding mixed gas to enter main respiratory system 1415 or ACGO1499.Reversal valve 1400 can be regarded the concrete structure of the valve module of the function that realizes reversal valve/driver's valve 1320,1330,1340 of describing in Figure 13 A and Figure 13 B as.Accordingly, system generation electronic signal makes driving gas be directed into the first driving gas air intake opening 1450 or the second driving gas air intake opening 1455.Concrete, at the first state, driving gas can be imported into the first driving gas air intake opening 1450.Driving gas can make main piston 1480 be partial to primary importance (left side, as shown in the figure).In primary importance, mixed gas enters from air intake opening 1405, flows through the first valve passage and leads to main respiratory system interface 1415, and then can be transferred to main respiratory system.Meanwhile, driving gas the first reversal valve 1420 opened of also can flowing through, and make the piston 1431 motion compresses bias springs 1432 of the second reversal valve 1430 and the second reversal valve 1430 cuts out.The drive valve system 1400 here can be regarded an embodiment of the functional module that in Fig. 5, automatically controlled selector valve module 588 and ACGO valve 585 form as.

At the second state, driving gas can import in this valve system 1400 by the second air intake opening 1455.Driving gas can make main piston 1480 be biased to the second place (right side, with contrary described in epimere).In the second place, mixed gas enters from air intake opening 1405, flows to ACGO1499 by second valve door.Meanwhile, driving gas can flow out by the first switching valve 1430, thereby and the piston 1421 of the first switching valve 1420 be activated the driving of gas and compress bias spring 1422 the first switching valve 1420 cuts out.

Therefore,, by guiding selectively driving gas to flow into valve system 1400 from the first air intake opening 1450 and the second air intake opening 1455, drive accordingly main piston 1480 to switch between the two positions.According to the position of main piston 1480, the mixed gas entering from air intake opening 1405 can be directed to main respiratory system 1415 or ACGO1499.Optionally driving gas is imported to the first driving gas air intake opening 1450 or the second driving gas air intake opening 1455 by electrovalve.Therefore, the electrical interface of any type or guidance panel or controller can be used for selecting mixed gas to import main respiratory system 1415 or ACGO1499.

Figure 15 A is the ACGO valve system of another embodiment of the present invention principle schematic in the first state (state 1).This valve system has adopted four-way valve.As shown in the figure, automatically controlled reversal valve, for example four-way valve 1530 and driver's valve 1510 are in the first state, and mixed gas 1505 is directed to main respiratory system 1515.Driver's valve 1510 can comprise an internal piston 1511, after this piston is driven, can between primary importance (seeing Figure 15 A) and the second place (seeing Figure 15 B), change.For mixed gas 1505 being imported to main respiratory system 1515, four-way valve 1530 can make driving gas 1550 flow to the first driving gas air intake opening of driver's valve 1510.Four-way valve 1530 can stop driving gas 1550 to flow to the second driving gas air intake opening of driver's valve 1510.Therefore, driving gas 1550 can cause piston 1511 to transfer to primary importance, and mixed gas 1505 piston channel of flowing through enters main respiratory system 1515 like this.

Figure 15 B is the ACGO valve system of another embodiment of the present invention principle schematic in the second state (state 2).In the structure of describing in Figure 15 B and Figure 15 A, structure is similar, just in contrary state.This ACGO valve system is in the second state, and mixed gas 1505 is directed to ACGO1520.For mixed gas 1505 is imported to ACGO1520, four-way change-over valve 1530 can stop driving gas 1550 to flow to the first driving gas air intake opening of driver's valve 1510.Four-way valve 1530 can make driving gas 1550 flow to the second driving gas air intake opening on driver's valve 1510.Driving gas 1550 can driven plunger 1511 be transferred to the second place, and at this moment mixed gas 1505 piston channel of flowing through enters ACGO1520.

First piston passage is for being communicated with main respiratory system 1515, and the second piston channel is for being communicated with ACGO1520.Change between primary importance and the second place by driven plunger 1511, the input of mixed gas 1505 can be switched between first piston passage and the second piston channel.First piston passage and the second piston channel in piston 1511 are spaced from each other.Therefore, main respiratory system 1515 and ACGO1520 are separate, select to carry out under the state corresponding with it respectively the transmission of mixed gas in system.

Can find out by comparison diagram 15A and Figure 15 B, by electronically controlled four-way change-over valve 1510, mixed gas 1505 can be imported to respectively in main respiratory system 1515 or ACGO1520.Four-way change-over valve 1510 can be by the manual operation panel control of an electronic operation panel and/or backup.Configuration as above allows to control an ACGO valve (as shown in Fig. 1,2 and 5) by automatically controlled selector valve module (automatically controlled selector valve module 588 as shown in Figure 5), driver's valve 1510 can form mixed gas and/or the arcotic of relative high flow capacity simultaneously, improve biocompatibility, be suitable for moving Anesthesia machine under oxygen-enriched environment, this system can be suitable for transmitting and have potential corrosive anesthetic (steam) in addition.

Figure 16 A is the ACGO valve system of another embodiment of the present invention principle schematic in the first state (state 1).This valve system has adopted four-way valve.This four-way valve 1630 is that with the difference of the four-way valve with 5 ports 1530 shown in Figure 15 A it is the four-way valve with 4 ports.As shown in the figure, automatically controlled reversal valve, for example four-way valve 1630 and driver's valve 1610 are in the first state, and mixed gas 1605 is directed to main respiratory system 1615.Driver's valve 1610 can comprise an internal piston 1611, after this piston is driven, can between primary importance (seeing Figure 16 A) and the second place (seeing Figure 16 B), change.For mixed gas 1605 being imported to main respiratory system 1615, four-way valve 1630 can make driving gas 1650 flow to the first driving gas air intake opening of driver's valve 1610.Four-way valve 1630 can stop driving gas 1650 to flow to the second driving gas air intake opening of driver's valve 1610.Therefore, driving gas 1650 can cause piston 1611 to transfer to primary importance, and mixed gas 1605 piston channel of flowing through enters main respiratory system 1615 like this.

Figure 16 B is the ACGO valve system of another embodiment of the present invention principle schematic in the second state (state 2).In the structure of describing in Figure 16 B and Figure 16 A, structure is similar, just in contrary state.This ACGO valve system is in the second state, and mixed gas 1605 is directed to ACGO1620.For mixed gas 1605 is imported to ACGO1620, four-way change-over valve 1630 can stop driving gas 1650 to flow to the first driving gas air intake opening of driver's valve 1610.Four-way valve 1630 can make driving gas 1650 flow to the second driving gas air intake opening on driver's valve 1610.Driving gas 1650 can driven plunger 1611 be transferred to the second place, and at this moment mixed gas 1605 piston channel of flowing through enters ACGO1620.

First piston passage is for being communicated with main respiratory system 1615, and the second piston channel is for being communicated with ACGO1620.Change between primary importance and the second place by driven plunger 1611, the input of mixed gas 1605 can be switched between first piston passage and the second piston channel.First piston passage and the second piston channel in piston 1611 are spaced from each other.Therefore, main respiratory system 1615 and ACGO1620 are separate, select to carry out under the state corresponding with it respectively the transmission of mixed gas in system.

Roughly the same in ACGO valve system structure in the ACGO valve system of present embodiment and a upper embodiment, and can obtain roughly the same effect.

The various valves of describing in foregoing or valve module, valve system, also can be called is switch, switch module, switching system.

The gas Flowrate Control System of describing in the various embodiments of the present invention, can be applicable to, in the various equipment that contains gas flow control, machine, be not limited to Medical anesthetic system, Anesthesia machine.In this anesthesiaing system.In the mixed gas that anesthetic gases forms by anesthesia evaporator direct oxygen injection and balanced gas, form containing after narcotic mixed gas/gaseous mixture, by flowing to patient after system control.In brief, the gas to be transmitted (such as mixed gas) that driver's valve control of the present invention is inputted by gas access is exported from one of two gas delivery ports, in embodiment, these two gas delivery ports are connected respectively to the main respiratory system of anesthesiaing system and outside assisted respiartion equipment.Certainly, described valve system/switch element is equally applicable in the system of other similar selective control direction of flow.

Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims (20)

1. a fluid electronic control system, is characterized in that, comprises driver's valve and electrically-controlled valve system, and this driver's valve comprises:

Piston, it comprises first passage and the second channel of mutual isolation, this piston can switch under the driving of drive fluid between primary importance and the second place;

Fluid intake, it is for introducing fluid to be transmitted, and in the time that piston is switched to primary importance, described fluid intake is connected with first passage, and in the time that piston is switched to the second place, described fluid intake is connected with second channel;

First fluid outlet, it is communicated with first passage; With

Second fluid outlet, it is communicated with second channel;

Thereby this electrically-controlled valve system control drive fluid flows to driver's valve driven plunger and switches between primary importance and the second place.

2. control system as claimed in claim 1, is characterized in that, described fluid to be transmitted comprises one or more gas.

3. control system as claimed in claim 2, is characterized in that, described fluid to be transmitted further comprises anesthetic steam.

4. control system as claimed in claim 1, is characterized in that, described drive fluid comprises one or more gas.

5. control system as claimed in claim 1, is characterized in that, described fluid intake is for receiving the mixed gas from anesthesia transmission system; Described first fluid outlet is for being connected to the main respiratory system of anesthesia transmission system; Described second fluid outlet is used for being connected to auxiliary common gas vent.

6. control system as claimed in claim 1, is characterized in that, described driver's valve further comprises position detecting switch, this position detecting switch for detection of piston whether in primary importance or the second place.

7. control system as claimed in claim 6, is characterized in that, described driver's valve is further used for the sheath of protective position detector switch.

8. control system as claimed in claim 1, is characterized in that, described driver's valve further comprises one or above pressure safety valve (PSV) being connected to fluid intake and/or first passage and/or second channel.

9. control system as claimed in claim 1, it is characterized in that, described piston further comprises a flexible member and a drive fluid entrance, this flexible member is for providing bias pressure to make piston be switched to primary importance to piston, this drive fluid entrance is for receiving the drive fluid that is controlled by electrically-controlled valve system, and drive fluid driven plunger overcomes the bias pressure of flexible member and piston is switched to the second place.

10. control system as claimed in claim 9, is characterized in that, described flexible member comprises spring.

11. control system as claimed in claim 9, is characterized in that, described electrically-controlled valve system comprises T-valve, and described T-valve can automatically controlled switching and drive fluid is introduced to drive fluid entrance.

12. control system as claimed in claim 1, it is characterized in that, described driver's valve further comprises the first drive fluid entrance and the second drive fluid entrance, described the first drive fluid entrance for receive be controlled by electrically-controlled valve system drive fluid and by piston actuated to primary importance, described the second drive fluid entrance for receive be controlled by electrically-controlled valve system drive fluid and by piston actuated to the second place, described electrically-controlled valve system control drive fluid is selected one inflow the first drive fluid entrance or the second drive fluid entrance.

13. control system as claimed in claim 12, it is characterized in that, described electrically-controlled valve system comprises the first T-valve and the second T-valve, described the first T-valve is introduced described the first drive fluid entrance for automatically controlled switching by drive fluid, and described the second T-valve is introduced described the second drive fluid entrance for automatically controlled switching by drive fluid.

14. control system as claimed in claim 13, is characterized in that, described the first T-valve is drawn drive fluid from a fluid source, and described the second T-valve is drawn drive fluid from another fluid source.

15. control system as claimed in claim 13, is characterized in that, described the first T-valve and the second T-valve are respectively self-locking dedicated three-way selector valves.

16. control system as claimed in claim 12, it is characterized in that, described electrically-controlled valve system comprises the reciprocal driver's valve of the first biasing, the the second reciprocal driver's valve of biasing and T-valve, described the first reciprocal driver's valve of biasing and the reciprocal driver's valve of the second biasing can move back and forth respectively by its inner piston and flexible member between the opposite end in valve separately, when described T-valve is during in the first state, the passage that its guiding driving gas forms in the reciprocal driver's valve of the first biasing flows to the first drive fluid entrance of driver's valve, and guide the reciprocal driver's valve of driving gas to the second biasing by the second drive fluid entrance isolation of its inner passage and driver's valve simultaneously, when described T-valve is during in the second state, the passage that its guiding driving gas forms in the reciprocal driver's valve of the second biasing flows to the second drive fluid entrance of driver's valve, and guides the reciprocal driver's valve of driving gas to the first biasing by the first drive fluid entrance isolation of its inner passage and driver's valve simultaneously.

17. control system as claimed in claim 16, it is characterized in that, the reciprocal driver's valve of described the first biasing, the second reciprocal driver's valve of biasing and described driver's valve are integrated in same manifold assembly, wherein the drive fluid entrance of the ventilation entrance of the reciprocal driver's valve of the first biasing and the reciprocal driver's valve of the second biasing is all connected to the first drive fluid outlet of T-valve, the drive fluid entrance of the ventilation entrance of the reciprocal driver's valve of the second biasing and the reciprocal driver's valve of the first biasing is all connected to the second drive fluid outlet of T-valve, the aeration vent internal communication of the reciprocal driver's valve of the first biasing is to the first drive fluid entrance of driver's valve, the aeration vent internal communication of the reciprocal driver's valve of the second biasing is to the second drive fluid entrance of driver's valve.

18. control system as claimed in claim 12, is characterized in that, described electrically-controlled valve system comprises four-way valve, its for drive fluid is selected one guide to the first drive fluid entrance or the second drive fluid entrance.

19. control system as claimed in claim 18, is characterized in that, described four-way valve is self-locking four-way valve.

20. 1 kinds of Anesthesia machines, it comprises anesthetic gases commingled system, fluid electronic control system, main respiratory system and auxiliary common gas vent, described anesthetic gases commingled system output mixed gas, described fluid electronic control system control mixed gas select one flow to described main respiratory system or auxiliary common gas vent, it is characterized in that, comprise the fluid electronic control system described in claim 1-19 any one.

Images