CN218075944U

CN218075944U - Gas circuit system and anesthesia machine

Info

Publication number: CN218075944U
Application number: CN202220723187.8U
Authority: CN
Inventors: 唐克锋; 叶巧; 梁登云; 胡榜
Original assignee: Ambulanc Shenzhen Tech Co Ltd
Current assignee: Ambulanc Shenzhen Tech Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-12-20
Anticipated expiration: 2032-03-30

Abstract

The embodiment of the utility model discloses a gas circuit system and an anesthesia machine, wherein the gas circuit system comprises a gas branch circuit; the control branch is connected with the gas branch and is used for controlling the mixing proportion of the gases and outputting target gas; the circulating branch comprises a first branch and a second branch, the first branch is connected with the control branch to convey the target gas to the target position, and the second branch is used for outputting the exhaust gas generated by the target position and the target gas which is not applied; the breathing circuit comprises a breathing module, the breathing module can store target gas output by the second branch, the breathing circuit further comprises an electric driving piece and a pneumatic module, and the breathing module can work under the driving of the electric driving piece or/and the pneumatic module. Through setting up pneumatic module and electric drive spare for breathing module has two kinds of drive modes, has not only promoted the stability of gas circuit system, has still reduced the reliance of gas circuit system to high pressurized air source, increases the application area of gas circuit system.

Description

Gas circuit system and anesthesia machine

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a gas circuit system and anesthesia machine.

Background

The anesthesia machine can send the anesthetic into the alveolus of the patient through the mechanical loop to form the gas partial pressure of the anesthetic, and after the gas partial pressure is dispersed to blood, the gas partial pressure directly inhibits the central nervous system, thereby generating the effect of general anesthesia. The anesthesia machine is used for conveying anesthesia gas, an internal gas path system is relied on, the anesthesia gas can be generated and sent to alveoli of a patient through the gas path system, a breathing loop is included in the gas path system, gas exhaled by the patient or the anesthesia gas which is not applied can be conveyed into the breathing loop, and the breathing loop can re-input the anesthesia gas which is not applied into the patient for application.

The breathing circuit in the related art is mainly pneumatic and electric control type, and the gas is used for providing driving force, so that the gas is required to have higher pressure, but in some cases, high-pressure gas is not introduced into a gas path system, so that the anesthesia machine cannot be normally used, and the use area of the anesthesia machine is limited.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a gas path system and an anesthesia apparatus having a wide application area.

In a first aspect, an embodiment of the present invention provides a gas circuit system, which includes:

the gas branch is used for conveying various required gases;

the control branch is connected with the gas branch and is used for controlling the mixing proportion of the gases and outputting target gas;

a circulating branch circuit comprising a first branch circuit and a second branch circuit, wherein the input end of the first branch circuit is connected with the output end of the control branch circuit so as to convey the target gas output by the control branch circuit to a target position, and the second branch circuit is used for outputting the waste gas generated by the target position and the target gas which is not applied; and

the breathing circuit comprises a breathing module connected with the second branch, the breathing module can store the target gas which is output by the second branch and is not applied, the breathing circuit further comprises an electric driving piece connected to the breathing module and a pneumatic module connected between the gas branch and the breathing module, and the breathing module can work under the driving of the electric driving piece or/and the pneumatic module so as to convey the stored target gas to a target position.

In some embodiments of the gas path system, the gas branch comprises an oxygen branch, a laughing gas branch and an air branch, the oxygen branch comprises an oxygen delivery pipe, and an oxygen pipe inlet, a filter, an oxygen pressure relief valve and an oxygen pressure relief valve which are arranged along the oxygen delivery pipe in sequence;

the laughing gas branch comprises a laughing gas conveying pipeline, and a laughing gas pipeline inlet, the filter, a laughing gas pressure relief valve and a laughing gas pressure reducing valve which are sequentially arranged along the laughing gas conveying pipeline;

the air branch comprises an air delivery pipeline, and an air pipeline inlet, a filter, an air pressure relief valve and an air pressure reducing valve, wherein the air pipeline inlet is formed in the air delivery pipeline in sequence.

In some embodiments of the gas circuit system, the oxygen delivery pipeline and the air delivery pipeline are both connected to the pneumatic module, and the driving gas for driving the breathing module to work can be switched through the pneumatic module.

In some embodiments of the gas path system, the oxygen branch further includes an oxygen backup gas source module connected to the oxygen delivery pipe and located between the oxygen pressure relief valve and the oxygen pressure reducing valve, and the oxygen delivery pipe is further provided with an oxygen selection valve for selecting an oxygen source between the oxygen pipe inlet and the oxygen backup gas source module;

the laughing gas branch also comprises a laughing gas standby gas source module which is connected to the laughing gas conveying pipeline and is positioned between the laughing gas pressure relief valve and the laughing gas pressure relief valve, and the laughing gas conveying pipeline is also provided with a laughing gas selection valve which is used for selecting a laughing gas source between the inlet of the laughing gas pipeline and the laughing gas standby gas source module;

the air branch road is including connecting on the air conveying pipeline and being located the air pressure relief valve with air compressor machine module between the air relief valve that is used for providing the high-pressure air supply, still be provided with on the air conveying pipeline and be used for the air duct entry with select the air selection valve in air source between the air compressor machine module.

In some embodiments of the gas path system, the oxygen delivery pipe, the laughing gas delivery pipe and the air delivery pipe are all provided with gas check valves for preventing gas from flowing back;

the gas check valves are arranged between the oxygen standby gas source module and the oxygen conveying pipeline, between the laughing gas standby gas source module and the laughing gas conveying pipeline and between the air compressor module and the air conveying pipeline.

In some embodiments of the gas path system, the control branch comprises a system switch, an oxygen smile stop valve, a flow meter module and a volatile tank module which are sequentially connected, the oxygen delivery pipe sequentially leads into the system switch, the oxygen smile stop valve and the flow meter module, the laughing gas delivery pipe sequentially leads into the oxygen smile stop valve and the flow meter module, and the air delivery pipe sequentially leads into the system switch and the flow meter module;

the control branch road still include with the ACGO switch module that has the ACGO interface that volatilizees jar module and connect, an output of ACGO switch module with first branch road is connected.

In some embodiments of the gas circuit system, a fast oxygenation module is further connected between the oxygen pressure reducing valve and the system switch, an output end of the fast oxygenation module is connected with the ACGO switch module, and the ACGO interface is connectable with the breathing module to deliver oxygen in the fast oxygenation module to the breathing module.

In some embodiments of the gas circuit system, the first branch circuit includes a breathing check valve, an oxygen concentration monitoring module and a breathing mechanics monitoring module which are connected in sequence, the breathing check valve is connected with the output end of the control branch circuit, and the breathing mechanics monitoring module is used for monitoring gas pressure and flow and can convey gas to a target position.

In some embodiments of the gas circuit system, the second branch comprises a respiratory mechanics monitoring module, a water collecting cup, a respiratory one-way valve and a carbon dioxide absorption module which are connected in sequence, and the carbon dioxide absorption module is connected with the respiratory module, so that the waste gas released from a target position and the mixed gas which is not applied can respectively pass through the respiratory mechanics monitoring module, the water collecting cup, the respiratory one-way valve and the carbon dioxide absorption module and then enter the respiratory module.

In a second aspect, the embodiment of the present invention further provides an anesthesia machine, which comprises an anesthesia machine body and the gas circuit system, wherein the gas circuit system is installed in the anesthesia machine body.

Adopt the embodiment of the utility model provides a, following beneficial effect has:

according to the gas circuit system and the anesthesia machine of the above embodiment, the breathing module is connected with the second branch circuit, so that the waste gas exhaled by the patient and the anesthesia gas which is not applied can be stored, and the breathing module can re-deliver the stored anesthesia gas to the patient. Through setting up pneumatic module and electric drive piece, when having high pressurized air source to insert in the gas circuit system, can switch high pressurized air source as the drive gas through pneumatic module, realize pneumatic automatically controlled mode, control breathing module conveying gas. When no high-pressure air source is connected into the air path system, the breathing module can be driven by the electric driving piece to convey air, and the air path system can work normally. Through setting up pneumatic module and electric drive spare for breathing module has two kinds of drive modes of pneumatic automatically controlled mode and electronic automatically controlled mode, has not only promoted the stability of gas circuit system, has still reduced the reliance of gas circuit system to high pressurized air source, increases the application area of gas circuit system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Wherein:

fig. 1 shows a schematic structural diagram of a gas circuit system according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of an air path system provided in accordance with an embodiment of the present invention;

fig. 3 is a schematic structural diagram illustrating an oxygen branch of a gas circuit system according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram illustrating a laughing gas branch of a gas circuit system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram illustrating an air branch of an air path system according to an embodiment of the present invention;

fig. 6 shows a schematic structural diagram of an anesthesia machine according to an embodiment of the present invention.

Description of the main element symbols:

100. a gas path system;

1. a gas branch; 11. an oxygen branch circuit; 111. an oxygen delivery conduit; 112. an oxygen conduit inlet; 113. a filter; 114. an oxygen pressure relief valve; 115. an oxygen pressure reducing valve; 116. an oxygen standby gas source module; 117. an oxygen selection valve; 118. an auxiliary oxygen supply flow meter;

12. laughing gas branch; 121. a laughing gas delivery conduit; 122. laughing gas duct inlet; 123. a laughing gas pressure relief valve; 124. a laughing gas pressure reducing valve; 125. a laughing gas standby gas source module; 126. a laughing gas selector valve;

13. an air branch; 131. an air delivery conduit; 132. an air duct inlet; 133. an air pressure relief valve; 134. an air relief valve; 135. an air compressor module; 136. an air selection valve; 137. an auxiliary air flow meter; 140. a gas check valve; 150. a rapid oxygenation module;

2. a control branch; 21. a system switch; 22. an oxygen smile stop valve; 23. a flow meter module; 24. a volatilization pot module; 25. an ACGO switch module; 26. an ACGO interface;

3. a circulation branch; 31. a first branch; 311. a breathing check valve; 312. an oxygen concentration monitoring module; 313. a respiratory mechanics monitoring module; 32. a second branch circuit; 321. a water accumulation cup; 322. a carbon dioxide absorption module;

4. a breathing circuit; 41. a breathing module; 42. an electric drive; 43. a pneumatic module; 44. a breather valve; 45. an exhaust gas recovery module;

200. an anesthesia machine body.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In a first aspect, the embodiment of the present invention provides a gas circuit system 100, and this gas circuit system 100 is used for conveying gas, for example, in the embodiment of the present invention, the gas circuit system 100 is changed to be applied to conveying anesthetic gas. In one embodiment, the pneumatic system 100 includes a gas branch 1, a control branch 2, a circulation branch 3, and a breathing circuit 4.

The gas branch 1 is used to deliver a plurality of required gases, where the required gases are determined according to practical application scenarios, for example, in this embodiment, the required gases are oxygen, laughing gas and air, and these three gases can be delivered through the gas branch 1.

Control branch road 2 is connected with gas branch road 1, and control branch road 2 is used for controlling the mixture of multiple gas, and can produce the target gas, and the target gas of this application embodiment is anesthetic gas, can export the anesthetic gas who produces. The anesthetic gas is required to be delivered into the human body, the mixing proportion of the gases is required to be paid attention, the proportion of each gas is not too much or too little, the reasonable proportion is carried out by the control branch 2, and the specific proportion problem is specified in the prior art and is not described herein.

The circulation branch 3 comprises a first branch 31 and a second branch 32, and an input end of the first branch 31 is connected with an output end of the control branch 2 so as to convey the anesthetic gas output by the control branch 2 to a target position. It should be noted that, in the embodiment of the present invention, the gas circuit system 100 is applied in a scenario for outputting anesthetic gas inhaled by a human body, and therefore, the target position mentioned above is referred to as a patient in the embodiment of the present invention, and the patient can inhale the anesthetic gas through the first branch 31.

The second branch 32 is used for outputting waste gas and unused anesthetic gas, the expired gas can be transported from the second branch 32 after the patient inhales the anesthetic gas, and when the patient inhales the anesthetic gas, the anesthetic gas delivered by the first branch 31 may not be inhaled by the patient completely and remains, and the anesthetic gas can also be delivered through the second branch 32.

The breathing circuit 4 comprises a breathing module 41 connected to the second branch 32, the breathing module 41 being able to store the residual anesthetic gas output by the second branch 32. The breathing circuit 4 further comprises an electric drive 42 connected to the breathing module 41, and a pneumatic module 43 connected between the gas branch 1 and the breathing module 41, the breathing module 41 is capable of operating under the drive of the electric drive 42 or/and the pneumatic module 43, and the electric drive 42 is an electric turbine module. The pneumatic module 43 uses the gas in the gas branch 1 as a driving gas to drive the breathing module 41 to work, the breathing module 41 mainly stores unused anesthetic gas, and when in use, the driving gas can be switched by the pneumatic module 43, or one of the two is selected as a driving member by the electric driving member 42 to drive the breathing module 41 to work, or the two driving manners can be simultaneously used to drive the breathing module 41 to work. The drive breathing module 41 is operative to re-deliver the stored anesthetic gases to the patient for use. It should be noted that, in the prior art, the internal structure and the working principle of the breathing module 41 are known, and are not described herein again.

It is worth mentioning that in a specific embodiment, the breathing module 41 may further be connected with a breathing valve 44 and an exhaust gas recycling module 45 for recycling the exhaust gas to avoid the exhaust gas from polluting the environment as much as possible.

By providing the breathing module 41, the breathing module 41 connected to the second branch 32 can receive the exhaust gas exhaled by the patient and the anesthetic gas not applied, and the breathing module 41 can store the anesthetic gas, and the stored anesthetic gas can be re-delivered to the patient when necessary. Through setting up pneumatic module 43 and electric drive 42, both can both drive breathing module 41 work alone, when having high pressurized air source to access in gas circuit system 100, can switch high pressurized air source as drive gas through pneumatic module 43, realize pneumatic automatically controlled mode, control breathing module 41 work. In some application scenarios, when no high-pressure air source is connected to the air path system 100, the pneumatic module 43 cannot drive the breathing module 41 to normally operate, and the electric driver 42 can drive the breathing module 41 to normally operate. By arranging the pneumatic module 43 and the electric driving member 42, the work of the breathing module 41 has two driving modes, namely a pneumatic electric control mode and an electric control mode, so that the stability of the gas circuit system 100 is improved, the dependence of the gas circuit system 100 on a high-pressure gas source is reduced, and the application area of the gas circuit system 100 is increased. Furthermore, when the high-pressure gas is used as the driving force in general, most of the high-pressure gas is oxygen, which results in a great deal of waste of oxygen in practical application, and when the high-pressure gas is driven by the electric driving member 42, the waste of oxygen can be avoided.

In a specific embodiment, the gas branch 1 comprises an oxygen branch 11, a laughing gas branch 12 and an air branch 13, the oxygen branch 11 comprises an oxygen delivery pipe 111 for delivering oxygen, and the oxygen branch 11 further comprises an oxygen pipe inlet 112, a filter 113, an oxygen pressure relief valve 114 and an oxygen pressure reducing valve 115, which are sequentially arranged along the oxygen delivery pipe 111. The oxygen pipeline inlet 112 is used for connecting an oxygen gas source, the filter 113 is used for filtering impurities in oxygen provided by the gas source, when the oxygen delivery pipeline 111 is under high pressure, partial pressure can be relieved through the oxygen relief valve 114 to prevent the high pressure from damaging subsequent elements, and the pressure in the oxygen delivery process can be reduced through the oxygen relief valve 115 to ensure stable gas supply in subsequent gas circuits.

Laughing gas branch 12 includes laughing gas conveying pipe 121 that is used for carrying laughing gas, and laughing gas branch 12 still includes laughing gas pipe entry 122, filter 113, laughing gas pressure relief valve 123 and laughing gas relief valve 124 that set gradually along laughing gas conveying pipe 121. The laughing gas pipeline inlet 122 is used for connecting a laughing gas source, and the structures and the functions of the filter 113, the laughing gas pressure relief valve 123 and the laughing gas pressure relief valve 124 are the same as the functions of the filter 113, the oxygen pressure relief valve 114 and the oxygen pressure relief valve 115 in the oxygen branch 11, so that redundant description is omitted.

The air branch 13 includes an air delivery pipe 131 for delivering air, and the air branch 13 further includes an air pipe inlet 132, a filter 113, an air relief valve 133, and an air relief valve 134, which are sequentially disposed along the air delivery pipe 131. The air pipe inlet 132 is used for connecting an air source, and the structures and functions of the filter 113, the air pressure relief valve 133 and the air pressure reducing valve 134 are the same as those of the filter 113, the oxygen pressure relief valve 114 and the oxygen pressure reducing valve 115 in the oxygen branch 11, so that the description is omitted.

It should be noted that the pneumatic module 43 drives the breathing module 41 to work through a high-pressure air source, which may be oxygen or air, so that the oxygen delivery pipe 111 and the air delivery pipe 131 are both connected to the pneumatic module 43, specifically, one input end of the pneumatic module 43 is connected between the oxygen pressure relief valve 114 and the oxygen pressure reducing valve 115, and the other input end is connected between the air pressure relief valve 133 and the air pressure reducing valve 134. The drive gas for driving the operation of the breathing module 41 can be switched between oxygen and air by the pneumatic module 43.

It is worth mentioning that an auxiliary oxygen supply flow meter 118 is further connected to the oxygen delivery pipe 111 behind the oxygen pressure reducing valve 115, an auxiliary air flow meter 137 is further connected to the air delivery pipe 131 behind the air pressure reducing valve 134, and oxygen transported through the oxygen delivery pipe 111 can be output through the auxiliary oxygen supply flow meter 118 after passing through the oxygen pressure reducing valve 115 to supply oxygen. The air transported through the air delivery pipe 131 passes through the air reducing valve 134 and then can be output through the auxiliary air flow meter 137 to be supplied with air. By providing the auxiliary oxygen flow meter 118 and the auxiliary air flow meter 137, oxygen can be supplied to meet clinical needs.

In a specific embodiment, the oxygen branch 11 further comprises an oxygen backup gas source module 116 connected to the oxygen delivery pipe 111 and located between the oxygen pressure relief valve 114 and the oxygen pressure reducing valve 115, wherein the oxygen backup gas source module 116 mainly comprises a gas cylinder containing high-pressure oxygen, a high-pressure check valve and a gas cylinder pressure reducer (not shown). Oxygen backup gas supply module 116 is used to provide a second source of oxygen. An oxygen selection valve 117 is also provided on the oxygen delivery conduit 111 for selecting a source of oxygen between the oxygen conduit inlet 112 and the oxygen backup gas source module 116. At this time, two supply ways of the oxygen pipeline inlet 112 and the oxygen standby gas source, which are supplied to the oxygen gas source on the oxygen branch 11, are selectable, and under the action of the oxygen selection valve 117, the following are specifically provided: 1. when the oxygen gas source and the oxygen backup gas source module 116 are connected through the oxygen pipeline inlet 112 and simultaneously deliver oxygen to the oxygen branch 11, under the action of the oxygen selection valve 117, the oxygen gas input through the oxygen pipeline inlet 112 is preferentially selected to be supplied to the subsequent gas circuit system 100; 2. when only one of the oxygen gas source and the oxygen backup gas source module 116 is connected to the inlet 112 of the oxygen pipeline for supplying oxygen to the gas path system 100, the input end for supplying oxygen is directly selected; 3. when the oxygen gas source is connected to the oxygen gas pipe inlet 112 to provide oxygen gas to the gas circuit system 100, and the pressure of the provided oxygen gas is insufficient, the oxygen gas standby gas source module 116 needs to be selected to provide oxygen gas to the gas circuit system 100 through the oxygen gas selection valve 117. By providing the oxygen backup gas source module 116, an additional oxygen supply path is provided, ensuring a continuous supply of oxygen and ensuring the pressure at which oxygen is supplied.

Laughing gas branch 12 is similar to oxygen branch 11, and also comprises a laughing gas standby gas source module 125 which is connected to laughing gas delivery pipe 121 and is located between laughing gas pressure relief valve 123 and laughing gas pressure reducing valve 124. The laughing gas delivery conduit 121 is further provided with a laughing gas selector valve 126 for selecting a source of laughing gas between the laughing gas conduit inlet 122 and the laughing gas backup gas source module 125. The principles of the laughing gas standby gas source module 125 and the laughing gas selector valve 126 for supplying laughing gas are the same as the principles of the oxygen standby gas source module 116 and the oxygen selector valve 117 for supplying oxygen, and are not described herein again.

The air branch 13 includes an air compressor module 135 connected to the air delivery pipe 131 between the air relief valve 133 and the air pressure reducing valve 134 for providing a source of high pressure air, and an air selection valve 136 is provided on the air delivery pipe 131 for selecting a source of air between the air pipe inlet 132 and the air compressor module 135. The air supply to the air branch 13 is divided into two cases, one is to directly connect the air pipe inlet 132 to the air supply for air supply, and the other is to provide air to the air branch 13 through the air compressor module 135 when the air selector valve 136 detects that the air pipe inlet 132 is not connected to the air supply.

It is worth mentioning that the oxygen delivery pipe 111, the laughing gas delivery pipe 121 and the air delivery pipe 131 are all provided with gas check valves 140 for preventing gas from flowing back. Specifically, the gas check valve 140 on the oxygen delivery pipe 111 is arranged on the pipe before the connection between the oxygen delivery pipe 111 and the oxygen standby gas source module 116, and the positions of the gas check valves 140 on the laughing gas delivery pipe 121 and the air delivery pipe 131 are the same as the positions of the gas check valves 140 on the oxygen delivery pipe 111.

Gas check valves 140 are arranged between the oxygen standby gas source module 116 and the oxygen delivery pipe 111, between the laughing gas standby gas source module 125 and the laughing gas delivery pipe 121, and between the air compressor module 135 and the air delivery pipe 131. Of course, in the foregoing embodiment, two gas check valves 140 are provided to prevent backflow to the two gas supply paths, respectively, and in another embodiment, one gas check valve 140 may be provided after the gas selector valve to prevent backflow to the two gas supply paths through the one gas check valve 140.

In one embodiment, the control branch 2 includes a system switch 21, an oxygen smile stop valve 22, a flow meter module 23 and a volatilization tank module 24 which are connected in sequence, the oxygen delivery pipe 111 sequentially passes through the system switch 21, the oxygen smile stop valve 22 and the flow meter module 23, the laughing gas delivery pipe 121 sequentially passes through the oxygen smile stop valve 22 and the flow meter module 23, and the air delivery pipe 131 sequentially passes through the system switch 21 and the flow meter module 23.

Oxygen delivery pipe 111 and air delivery pipe 131 all are connected with system switch 21 after passing through oxygen relief valve 115, air relief valve 134, and system switch 21 can control the break-make of oxygen branch road 11, air branch road 13 and follow-up gas circuit, and when system switch 21 opened, the oxygen that oxygen branch road 11 provided transported to oxygen smile stop valve 22 via oxygen delivery pipe 111, and the air that air branch road 13 provided transported to flowmeter module 23 via air delivery pipe 131. Laughing gas directly carries to laughing gas stop valve 22 through laughing gas pipeline 121, and laughing gas stop valve 22 is used for controlling the mixing ratio of oxygen and laughing gas, through the increase and decrease condition of input value laughing gas stop valve 22, the increase and decrease of synchronous control laughing gas when the oxygen input is less than a certain amount, then stops the supply of laughing gas.

No matter be oxygen, laughing gas or air, all need to let in flowmeter module 23 and export to volatilizing jar module 24, volatilize jar module 24 inside have a volatile anesthetic substance, when the mist of oxygen, laughing gas and air let in volatilize jar module 24, can mix anesthetic substance and mist, so, the gas of exporting from volatilizing jar module 24 is anesthetic gas.

In a specific embodiment, the control branch 2 further comprises an ACGO switch module 25 having an ACGO interface 26 connected to the volatilization canister module 24, and an output of the ACGO switch module 25 is connected to the first branch 31. The ACGO switch module 25 provides a plurality of gas output channels, one of which is output via the ACGO interface 26, and another of which is connectable to the first branch 31 to deliver anesthetic gas to the first branch 31.

It should be noted that a rapid oxygenation module 150 is further connected between the oxygen pressure reducing valve 115 and the system switch 21, and the oxygen output through the oxygen pressure reducing valve 115 can be input into the rapid oxygenation module 150. The output end of the fast oxygen charging module 150 is connected with the ACGO switch module 25, the ACGO interface 26 is connected with the fast oxygen charging module 150, the ACGO interface 26 can be connected with the breathing module 41, and therefore oxygen in the fast oxygen charging module 150 can be conveyed to the breathing module 41. It should be noted that, it is said that another output end of the ACGO switch module 25 is connected to the first branch 31, and the first branch 31 is connected to the volatilization pot module 24 through the ACGO switch module 25, so that the anesthetic gas output by the volatilization pot module 24 can enter the first branch 31, it is worth mentioning that the output end of the ACGO switch module 25 cannot be opened simultaneously, that is, the gas delivered by the volatilization pot module 24 and the rapid oxygenation module 150 can only be output by selecting through the ACGO switch module 25.

In one embodiment, the first branch 31 includes a breathing check valve 311, an oxygen concentration monitoring module 312, and a respiratory mechanics monitoring module 313 connected in sequence, wherein the breathing check valve 311 is connected to an output end of the ACGO switch module 25 to receive the anesthetic gas output by the volatilization canister module 24, and the breathing check valve 311 can prevent the anesthetic gas from flowing back. The oxygen concentration monitoring module 312 is used to monitor the oxygen concentration in the anesthetic gas, and if the oxygen concentration is not qualified, the oxygen branch 11 needs to be controlled to increase the input amount of oxygen. The anesthetic gas qualified for monitoring the oxygen concentration is delivered to the respiratory mechanics monitoring module 313, and the respiratory mechanics monitoring module 313 is configured to monitor the pressure and flow rate of the anesthetic gas and deliver the gas to the patient.

The second branch 32 includes a respiratory mechanics monitoring module 313, a water accumulation cup 321, a respiratory one-way valve 311 and a carbon dioxide absorption module 322 connected in sequence, and the carbon dioxide absorption module 322 is connected with the respiratory module 41. The expired gas and the residual unabsorbed anesthetic gas of the patient can respectively pass through the respiratory mechanics monitoring module 313, the water accumulation cup 321, the breathing check valve 311 and the carbon dioxide absorption module 322 and then enter the breathing module 41. The water accumulation cup 321 is used for collecting condensed water generated by condensation of gas in the conveying process, and the carbon dioxide absorption module 322 is used for absorbing exhaled carbon dioxide. The gas output by the carbon dioxide absorption module 322 can enter the breathing module 41, and the breathing module 41 enters the waste gas into the waste gas recovery module 45 after passing through the breathing valve 44.

In a second aspect, the embodiment of the present invention further provides an anesthesia apparatus, which includes an anesthesia apparatus body 200 and the gas circuit system 100, wherein the gas circuit system 100 is installed in the anesthesia apparatus body 200.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An air path system, comprising:

the gas branch is used for conveying various required gases;

a circulating branch comprising a first branch and a second branch, wherein the input end of the first branch is connected with the output end of the control branch so as to convey the target gas output by the control branch to a target position, and the second branch is used for outputting the exhaust gas generated by the target position and the target gas which is not applied; and

2. The gas circuit system of claim 1, wherein the gas branch comprises an oxygen branch, a laughing gas branch and an air branch, the oxygen branch comprises an oxygen delivery pipe, and an oxygen pipe inlet, a filter, an oxygen pressure relief valve and an oxygen pressure relief valve sequentially arranged along the oxygen delivery pipe;

3. The gas circuit system according to claim 2, wherein the oxygen delivery pipe and the air delivery pipe are connected to the pneumatic module, and the driving gas for driving the breathing module to operate can be switched through the pneumatic module.

4. The gas circuit system of claim 2, wherein the oxygen branch further comprises an oxygen backup gas source module connected to the oxygen delivery pipe and located between the oxygen pressure relief valve and the oxygen pressure reducing valve, and the oxygen delivery pipe is further provided with an oxygen selection valve for selecting a source of oxygen between the oxygen pipe inlet and the oxygen backup gas source module;

5. The gas circuit system of claim 4, wherein the oxygen delivery pipeline, the laughing gas delivery pipeline and the air delivery pipeline are all provided with gas check valves for preventing gas backflow;

6. The gas circuit system of claim 2, wherein the control branch comprises a system switch, an oxygen smile stop valve, a flow meter module and a volatilization tank module which are sequentially connected, the oxygen delivery pipe sequentially leads into the system switch, the oxygen smile stop valve and the flow meter module, the laughing gas delivery pipe sequentially leads into the oxygen smile stop valve and the flow meter module, and the air delivery pipe sequentially leads into the system switch and the flow meter module;

the control branch circuit further comprises an ACGO switch module which is connected with the volatilization pot module and is provided with an ACGO interface, and one output end of the ACGO switch module is connected with the first branch circuit.

7. The air circuit system of claim 6, wherein a fast oxygen charging module is further connected between the oxygen pressure reducing valve and the system switch, an output end of the fast oxygen charging module is connected to the ACGO switch module, and the ACGO interface is connectable to the breathing module to deliver oxygen in the fast oxygen charging module to the breathing module.

8. The gas circuit system according to claim 1, wherein the first branch comprises a breathing check valve, an oxygen concentration monitoring module and a breathing mechanics monitoring module, which are connected in sequence, the breathing check valve is connected with the output end of the control branch, and the breathing mechanics monitoring module is used for monitoring gas pressure and flow and delivering gas to a target position.

9. The gas circuit system according to claim 1, wherein the second branch comprises a respiratory mechanics monitoring module, a water collecting cup, a respiratory one-way valve and a carbon dioxide absorption module which are connected in sequence, and the carbon dioxide absorption module is connected with the respiratory module, so that the waste gas released from a target position and the mixed gas which is not applied can respectively enter the respiratory module after passing through the respiratory mechanics monitoring module, the water collecting cup, the respiratory one-way valve and the carbon dioxide absorption module.

10. An anesthesia machine comprising an anesthesia machine body and a gas circuit system as claimed in any of claims 1-9, said gas circuit system being mounted in said anesthesia machine body.