CN114392442A - Artificial assisted respiratory system for emergency internal medicine - Google Patents

Abstract

The invention discloses an artificial respiration system for emergency internal medicine, which comprises a supply air path, an air flow detection device, an air heating device and an air humidifying device, wherein the air flow detection device comprises a body, the body is provided with a first channel and a second channel which are arranged at intervals, the body is also provided with a valve path which is arranged in a way of crossing with the first channel, two ends of the valve path are respectively communicated with the supply air path and the second channel, a valve rod is arranged in the valve path in a penetrating way, the valve rod can slide in the valve path, the flow area of the first channel can be adjusted when the valve rod slides, one end of the first channel is communicated with the air humidifying device, the air humidifying device can adjust the water spraying amount according to the medium flow in the first channel, and the water adding amount and the heating amount can be intelligently and scientifically controlled and adjusted according to the oxygen flow in the air supply path through the arrangement mode, the water adding amount and the heating amount are matched with the oxygen flow, and the constant humidity and temperature of the oxygen are ensured.

Description

Artificial assisted respiratory system for emergency internal medicine

Technical Field

The invention relates to the technical field of medical instruments, in particular to an artificial assisted respiratory system for emergency internal medicine.

Background

In emergency internal medicine, some critically ill patients with dyspnea need artificial assisted respiration, a mask is mostly arranged at the mouth and nose of a patient in the currently commonly used artificial assisted respiration method, then oxygen is provided for the patient, and the blood oxygen concentration of the patient reaches a normal level.

Disclosure of Invention

In view of the above problems, the present application provides an artificial respiration system for emergency internal medicine, which solves the technical problems in the background art.

The invention provides an artificial respiration assisting system for emergency internal medicine, which comprises a supply air path, and a gas flow detection device, a gas heating device and a gas humidifying device which are arranged on the supply air path, wherein the gas flow detection device comprises a body, the body is provided with a first channel and a second channel which are arranged at intervals, the body is also provided with a valve channel which is arranged in a cross way with the first channel, two ends of the valve channel are respectively communicated with the supply air path and the second channel, a valve rod penetrates through the valve channel, the valve rod can slide in the valve channel, the flow area of the first channel can be adjusted when the valve rod slides, one end of the first channel is communicated with the gas humidifying device, and the gas humidifying device can adjust the water spraying amount according to the medium flow in the first channel.

Further, when the air flow in the air supply branch is increased, the flow area of the first channel is increased, and the water spraying amount of the air humidifying device is increased; when the air flow in the air supply branch is reduced, the flow area of the first channel is reduced, and the water spraying amount of the air humidifying device is reduced.

Furthermore, a first piston cavity and a second piston cavity are respectively arranged at two end parts of the valve passage, and a first piston and a second piston are respectively arranged in the first piston cavity and the second piston cavity, the first piston and the second piston are respectively arranged at two ends of the valve rod, and the first piston cavity is positioned between the first passage and the second passage.

Further, the first piston cavity and the second piston cavity are coaxially arranged with the valve passage, and the cross-sectional area of the first piston cavity is smaller than that of the second piston cavity.

Furthermore, the gas humidifying device comprises a humidifying cavity arranged on the supply gas path, a liquid pump and an atomizer arranged in the humidifying cavity, the liquid pump comprises a driving device and a working cavity, the driving device comprises a first gas path with one end communicated with the first channel, a third piston cavity arranged on one side of the first gas path, and a third piston arranged in the third piston cavity, one side of the third piston far away from the first gas path is coaxially provided with a driving rod, the end part of the driving rod can extend out of the side wall of the first end of the third piston cavity, the driving rod is sleeved with a first pressure spring, one end of the first pressure spring is pressed against the third piston, the other end of the first pressure spring is pressed against the side wall of the first end of the third piston cavity, and the gas humidifying device further comprises a second gas path and a third gas path which are respectively arranged at two ends of the third piston cavity and communicated with the third gas path, the second air passage is communicated with the third piston cavity and the first air passage, the third air passage is communicated with the third piston cavity and the external atmospheric pressure, the third piston is further provided with a fourth air passage, a valve body is arranged in the fourth air passage, a first magnet is arranged on the side wall of the first end of the third piston cavity, a second magnet is arranged on the valve body, and when the third piston is close to the side wall of the first end of the third piston cavity, the first magnet and the second magnet are adsorbed to open the valve body; the working chamber includes the first opening with the water source intercommunication, with the second opening that the atomizer is connected and with the fourth piston chamber of the coaxial setting in third piston chamber, be provided with the fourth piston in the fourth piston chamber, the fourth piston with the end connection of actuating lever, first opening is provided with and allows the medium to get into the first check valve of working chamber, the second opening is provided with and allows the medium to flow out the second check valve of working chamber.

Further, the gas heating device comprises a heating medium conveying branch for conveying a heating medium, a control valve is arranged on the heating medium conveying branch, the control valve is connected to the gas flow detection device, and the valve rod can drive the control valve to work when moving in the valve passage.

Further, when the flow rate of the gas in the gas supply branch is increased, the flow area of the first passage is increased, the opening degree of the control valve is increased, and the flow rate of the heating medium passing through the heating medium delivery branch is increased.

Further, the control valve includes a valve body located on one side of the gas supply path away from the gas flow detection device, a heating medium passage and a second valve passage communicated with the heating medium passage in an intersecting manner are arranged in the valve body, the second valve passage and the valve passage are coaxially arranged, a second valve rod penetrates through the second valve passage, a third magnet is arranged at one end, away from the heating medium passage, of the second valve rod, a fourth magnet connected with the third magnet in a driving manner is arranged on the second piston, a spring is further arranged between the third magnet and the end portion of the second valve passage, and the spring is opposite to the elastic force direction of the third magnet and the magnetic force direction of the fourth magnet to the third magnet.

Further, the three magnets are arranged between the heating medium channel and the second piston, the same magnetic poles of the fourth magnet and the third magnet are arranged oppositely, and the spring is a pressure spring.

Further, the gas heating device comprises a first heat exchanger and a second heat exchanger which are arranged in series, the first heat exchanger comprises a first heat exchange branch connected with the supply gas path and a second heat exchange gas path connected with the human body expiration end, and the second heat exchanger comprises a third heat exchange gas path communicated with the heating medium conveying branch and a fourth heat exchange branch connected with the supply gas path.

Further, the first heat exchange branch is arranged at the upstream of the fourth heat exchange branch.

Further, the gas flow rate detecting device, the gas heating device, and the gas humidifying device are sequentially provided along the gas supply direction of the supply gas path.

The technical effect brought by the technical scheme of the invention is as follows: the invention provides an artificial respiration assisting system for emergency department, wherein a gas flow detecting device is arranged on a supply gas path to detect the flow of oxygen in the gas supply gas path, the structure of the gas flow detecting device can change the gas flow passing through a first channel when the flow of the oxygen changes, so that the water adding amount of a gas humidifying device is controlled according to the change of the gas flow, the water adding amount corresponds to the oxygen amount, and the opening of a control valve can be correspondingly adjusted when the gas flow in the gas supply gas path changes by arranging the control valve, so that the flow of liquid for heating the oxygen is adjusted, and the water adding amount and the heating amount can be adjusted according to the oxygen flow.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of an artificial respiration system for emergency internal medicine provided by the invention.

Fig. 2 is a schematic structural diagram of a gas heating device in an artificial assisted respiration system for emergency internal medicine provided by the invention.

Fig. 3 is a schematic structural diagram of a gas flow detection device in an artificial assisted respiration system for emergency internal medicine provided by the invention.

Fig. 4 is a schematic structural diagram of a gas humidifying device in an artificial respiration system for emergency internal medicine provided by the invention.

Fig. 5 is a schematic diagram of a partially enlarged structure at a position a in an artificial assisted respiration system for emergency internal medicine provided by the invention.

Fig. 6 is a schematic diagram of a partial enlarged structure at a position B in an artificial assisted respiration system for emergency internal medicine provided by the invention.

Fig. 7 is a schematic structural diagram of a second heat exchanger in an artificial respiration system for emergency internal medicine provided by the invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The invention provides an artificial respiration assisting system for emergency department, referring to fig. 1, as a specific implementation mode, the system comprises a supply air path 1, a gas flow detection device 2, a gas heating device 3 and a gas humidifying device 5 which are arranged on the supply air path 1, wherein the gas flow detection device 2 comprises a body 21, the body 21 is provided with a first channel 22 and a second channel 23 which are arranged at intervals, the body 21 is also provided with a valve channel 24 which is arranged to intersect with the first channel 22, two ends of the valve channel 24 are respectively communicated with the supply air path 1 and the second channel 23, a valve rod 25 is arranged in the valve channel 24 in a penetrating way, the valve rod 25 can slide in the valve channel and can adjust the flow area of the first channel 22 when the valve rod slides, one end of the first channel 22 is communicated with the gas humidifying device 5, the gas humidifying device 5 can adjust the amount of water spray according to the medium flow rate in the first passage.

Further, as a specific embodiment, when the flow rate of the gas in the gas supply branch 1 increases, the flow area of the first passage 22 increases, and the amount of water sprayed by the gas humidifier 5 increases; when the air flow in the air supply branch 1 is reduced, the flow area of the first channel 22 is reduced, the water spraying amount of the air humidifying device 5 is reduced, and the water spraying amount of the air humidifying device can be controlled through the air flow detecting device by the arrangement mode, so that the water spraying amount is matched with the oxygen amount, and the constant humidity of the oxygen is ensured.

Further, referring to fig. 3, as a specific embodiment, a first piston cavity 241 and a second piston cavity 242 are respectively disposed at two end portions of the valve passage 24, and a first piston 243 and a second piston 244 are respectively disposed in the first piston cavity 241 and the second piston cavity 242, the first piston 243 and the second piston 244 are respectively disposed at two end portions of the valve rod 25, the first piston cavity 241 is located between the first passage 22 and the second passage 23, and a second compression spring 245 is disposed between the second piston 244 and a bottom portion of the second piston cavity.

Further, referring to fig. 3, as a specific embodiment, the first piston chamber 241 and the second piston chamber 242 are coaxially disposed with the valve passage 24, and the cross-sectional area of the first piston chamber 241 is smaller than that of the second piston chamber 242, by which the pushable valve rod is moved by a slight change in the flow rate of oxygen gas in the gas supply branch 1, so that the flow rate of gas in the first passage is changed, thereby improving the detection sensitivity of the gas flow rate detection device 2.

Further, in order to further ensure the detection accuracy of the gas flow rate detection device 2, the sectional areas of the first piston cavity 241 and the second piston cavity 242 are set as follows: the cross-sectional area of the first piston cavity is S1, the cross-sectional area of the second piston cavity is S2, the gas pressure of the gas in the second channel is P1, the elastic coefficient of the second pressure spring is K1, and then S2 is 3/4S 1P 1^1/2* K1*&1, wherein&1 is an adjustment coefficient, and the value range is 0.36-0.58.

Specifically, referring to fig. 1 and fig. 2, as a specific embodiment, the detection method of the gas flow rate detection device 2 is as follows: one end of a first channel 22 is communicated with an air source, the other end of the first channel is communicated with an air humidifying device 5, a second channel 23 is connected to the air source, in order to ensure the stability of air flow in the first channel and the second channel, pressure stabilizing valves 7 are arranged at the front ends of air inlets of the first channel and the second channel, when oxygen is transported, constant-pressure air flow is introduced into the first channel 22 and the second channel, oxygen air flow passes through a supply branch 1, the pressure on the valve rod end is different, the valve rod resists the pressure movement of a first pressure spring 245, the flow area of the first channel 22 is changed, the flow rate of the air flow passing through the first channel 22 is changed until the stress is balanced, the position of the valve rod is determined, the flow rate of the air flow passing through the first channel is stable and unchanged, when the oxygen air flow in the air supply path 1 is increased, the first pressure spring continues to be compressed by the first valve rod, until the stress is balanced, so that the flow area of the first channel is increased, the flow rate of the air flow passing through the first channel is increased, the flow rate of the air flow in the air supply path 1 is obtained by detecting the flow rate of the air flow in the first channel, specifically, the air flow can be detected by arranging a flow sensor (not shown), the air flow in the first channel is increased when the oxygen air flow in the air supply path 1 is increased by the arrangement mode, the water adding amount of the gas humidifying device 5 can be increased, the air flow in the first channel is decreased when the oxygen air flow in the air supply path 1 is decreased, the water adding amount of the gas humidifying device 5 can be controlled to be matched with the oxygen amount, and the specific structure of the gas humidifying device 5 and the method for controlling the water adding amount are detailed below.

Further, as a specific embodiment, referring to fig. 4 and 5, the specific structure of the gas humidifying device is as follows: the gas humidifying device 5 comprises a humidifying cavity 51 arranged on the supply gas path 1, a liquid pump 52 and an atomizer 53 arranged in the humidifying cavity 51, wherein the liquid pump 52 comprises a driving device 520 and a working cavity 522, the driving device 520 comprises a first gas path 5201 with one end communicated with the first channel 22, a third piston cavity 5202 arranged on one side of the first gas path, and a third piston 5203 arranged in the third piston cavity, one side of the third piston 5203 far away from the first gas path 5201 is coaxially provided with a driving rod 5204, the end part of the driving rod can extend out of the side wall of the first end of the third piston cavity, the driving rod is sleeved with a first pressure spring 5209, one end of the first pressure spring is pressed against the third piston, the other end is pressed against the side wall of the first end of the third piston cavity, and the gas path 5205 and the third gas path 5206 are respectively arranged at two ends of the third piston cavity, the second air passage 5205 is communicated with the third piston cavity and the first air passage, the third air passage 5206 is communicated with the third piston cavity and the external atmospheric pressure, the third piston is further provided with a fourth air passage 5207, a valve body 5208 is arranged in the fourth air passage, the side wall of the first end of the third piston cavity is provided with a first magnet 5210, the valve body is provided with a second magnet 5211, and when the third piston is close to the side wall of the first end of the third piston cavity, the first magnet 5210 and the second magnet 5211 adsorb to open the valve body; the working chamber comprises a first opening 5221 communicating with a water source, a second opening 5222 connected with the atomizer 53 and a fourth piston chamber 5223 coaxially arranged with the third piston chamber, a fourth piston 5226 is arranged in the fourth piston chamber, the fourth piston is connected with the end of the driving rod 5204, the first opening 5221 is provided with a first one-way valve 5224 allowing a medium to enter the working chamber 522, and the second opening is provided with a second one-way valve 5225 allowing a medium to flow out of the working chamber 522.

Specifically, the use method of the gas humidifying device comprises the following steps: the air flow from the first channel 22 flows into the first air passage 5201, so that a certain air pressure is generated in the first air passage, and thus a pressure difference is generated between the third piston chamber 5202 and the third piston 5203, and the air thrust exerted on the third piston is greater than the elastic force of the first compression spring 5209, so that the third piston 5203 case can be pushed to move away from the first air passage 5201, when the third piston moves closer to the first end of the third piston, the magnetic force of the first magnet 5210 and the second magnet 5211 can open the valve body 5208, so as to open the fourth air passage on the third piston, so that the pressure difference between the two sides of the third piston is reduced, the air thrust exerted on the third piston is less than the elastic force of the first compression spring 5209, the third piston moves in the opposite direction, so that the driving rod 5204 can reciprocate, and the pressure difference between the two sides of the third piston becomes greater as the air flow in the first air passage becomes greater, the reciprocating speed of the third piston in the third piston cavity becomes fast, and the reciprocating speed of the third piston becomes slow when the air flow in the first air passage becomes small; the driving rod drives the fourth piston to reciprocate in the fourth piston cavity, so that the pressure in the working cavity 522 is increased and decreased in a reciprocating manner, when the pressure in the working cavity is decreased, the first check valve 5224 is opened, the second check valve 5225 is closed, so that water flow is sucked into the working cavity 522 through the first opening 5221, when the pressure in the working cavity is increased, the first check valve is closed, the second check valve is opened, so that the water flow in the working cavity is pushed to flow out from the second opening 5222 and is sprayed out from the atomizer 53 to humidify the oxygen flowing into the humidification cavity 51, and then the humidified oxygen flows out from the air outlet of the humidification cavity to supply oxygen to a patient, because when the air flow in the first air passage is increased, the reciprocating motion speed of the third piston is increased, the reciprocating motion speed of the first air passage is decreased, and the reciprocating motion speed of the third piston is decreased, the air flow in the first air passage is increased, so that the water pumping amount is increased, the air flow in the first air passage is reduced, and the pump water amount is reduced.

In a further embodiment of the present invention, referring to fig. 4, as a specific implementation manner, a guide hole intersecting with the fourth air channel 5207 is perforated in the third piston 5203, the valve body 5208 includes a guide rod perforated in the guide hole, a positioning plate is disposed at an end of the guide rod close to the first air channel 5201, a fifth compression spring is disposed between the positioning plate and the third piston 5203, a valve is disposed at another end of the guide rod, the second magnet 5211 is disposed on the valve, the fifth compression spring can push the guide rod to press the valve to seal the fourth air channel 5207, by this arrangement, when the third piston 5203 is farther from the first magnet 5210, the suction force between the first magnet and the second magnet is smaller than the elastic force of the fifth compression spring, the valve is not opened, and when the third piston is gradually closer to the first magnet 5210, the suction force between the first magnet and the second magnet is gradually larger, and when the suction force between the first magnet and the second magnet is larger than the elastic force of the fifth compression spring, the valve is opened in the pulling guide bar motion, the both sides of intercommunication third piston, reduce the pressure differential, thereby make the third piston keep away from first magnet motion under the spring action of first pressure spring 5209, magnetic force along with apart from first magnet and second magnet diminishes, until magnetic force is less than the elasticity of fifth pressure spring, the valve is closed fourth gas channel 5207, make third piston both sides production pressure differential again, thereby make the third piston can reciprocating motion, the mode of opening valve body 5208 through first magnet and second magnet magnetic force can be opening the valve body to the in-process of closing the valve body and have the time delay function, thereby can increase the movement distance of third piston, improve the efficiency of pumping.

In a further embodiment of the present invention, as a preferred embodiment, in order to ensure that the cross-sectional area of the third piston chamber 5202 is S3 and the cross-sectional area of the fourth piston chamber is S4, S3 ≧ 2.5S4, which is calculated by: s3 ═ (K2 × L)^-2*&2/S4, wherein K2 is the elastic coefficient of the first compression spring 5209, L is the maximum displacement of the third piston in the piston cavity,&and 2 is an adjustment coefficient, the value range is 0.05-1.45, and the cross sectional area of the third piston cavity and the cross sectional area of the fourth piston cavity are determined in such a way, so that the third piston has enough kinetic energy to drive the fourth piston to move when the driving device 520 works, and the working cavity is effectively driven to pump water.

In a further embodiment of the present invention, referring to fig. 2, as a specific implementation manner, the gas heating device 3 includes a heating medium delivery branch 30 for delivering a heating medium, a control valve 4 is disposed on the heating medium delivery branch 30, the control valve 4 is connected to the gas flow rate detection device 2, and the valve rod 25 can drive the control valve 4 to operate when moving in the valve channel 24.

In a further embodiment of the present invention, when the flow rate of the air in the air supply branch 1 increases, the flow area of the first passage 22 increases, the opening degree of the control valve 4 increases, and the flow rate of the heating medium passing through the heating medium delivery branch 30 increases.

In a further embodiment of the present invention, referring to fig. 6, as a specific implementation manner, the control valve includes a valve body 41 located on a side of the supply gas path 1 away from the gas flow rate detection device 2, a heating medium channel 42 and a second valve channel 43 intersecting with the heating medium channel are provided in the valve body, the second valve channel is provided coaxially with the valve channel 24, a second valve rod 44 is inserted in the second valve channel, a third magnet 45 is provided at an end of the second valve rod away from the heating medium channel 42, a fourth magnet 46 drivingly connected with the third magnet 45 is provided on the second piston 244, a spring 47 is further provided between the third magnet and an end of the second valve channel, and a direction of an elastic force of the spring on the third magnet is opposite to a direction of a magnetic force of the fourth magnet on the third magnet.

In a further embodiment of the invention, with continued reference to fig. 6, the three magnets 45 are arranged between the heating medium channel 42 and the second piston 244, the same poles of the fourth magnet and the third magnet are arranged opposite to each other, the spring is a compression spring, and specifically, the control valve 4 operates in the following manner: when the oxygen flow in the supply gas path 1 is increased, the valve rod 25 slides towards the direction far away from the control valve 4, so that the distance between the third magnet and the fourth magnet is increased, the magnetic force is reduced, the second valve rod moves towards the direction close to the second piston under the action of the elastic force of the spring 47, the flow area of the heating medium channel is increased, and the flow of the heating water source is increased; when the oxygen flow is reduced, the flow area of the heating medium channel is reduced, and the flow of the heating water source is reduced, so that the matching of the flow of the heating water source and the flow of the oxygen is ensured, and the constant temperature of the oxygen is ensured.

In a further embodiment of the present invention, referring to fig. 2, as a specific implementation manner, the gas heating device 3 includes a first heat exchanger 31 and a second heat exchanger 32 which are arranged in series, the first heat exchanger includes a first heat exchange branch 310 connected to the supply gas path 1 and a second heat exchange gas path 311 connected to the exhalation end of the human body, and the second heat exchanger 32 includes a third heat exchange gas path 320 communicated with the heating medium conveying branch 30 and a fourth heat exchange branch 321 connected to the supply gas path 1.

In a further embodiment of the present invention, said first heat exchange branch 310 is arranged upstream of said fourth heat exchange branch 321.

Through this kind of mode of setting, pass through the tube coupling air pump with the gas of patient's exhalation, carry the steam of patient's exhalation to first heat transfer branch road 310 through the air pump, thereby through the oxygen in the first heat transfer branch road heating second heat transfer branch road, carry out the primary heating to oxygen, then oxygen flows into the fourth heat transfer branch road of second heat exchanger, the third heat transfer branch road intercommunication of second heat exchanger 32 has the heating water source, further heats oxygen through hot water, and through set up on the pipeline that adds the heating water source control valve 4, through the flow of control valve control heating water source.

In a further embodiment of the present invention, referring to fig. 7, as a specific implementation manner, a specific structure of the second heat exchanger includes a water tank 3212, a plurality of water flowing holes 3216 are uniformly arranged at intervals at a bottom 3215 of the water tank 3212, a liquid cavity 3213 is arranged below the water tank and corresponding to each water flowing hole, a heat conducting pipe 3214 is connected to the bottom of each liquid cavity, a heating cavity is further arranged below the water tank, the heat conducting pipe 3214 is located inside the heating cavity, an air inlet 3201 and an air outlet 3202 of the heating cavity are communicated with a supply air path, so that oxygen in the supply air path flows into the heating cavity to exchange heat with the heat conducting pipe, so as to heat the oxygen, wherein the water tank 3212 is provided with a liquid inlet 3210, and each heat conducting pipe 3214 is provided with a liquid outlet extending out of the heating cavity.

In a further embodiment of the present invention, referring to fig. 1 and 2, as a specific implementation, the gas flow rate detection device 2, the gas heating device 3, and the gas humidifying device 5 are sequentially arranged along the gas supply direction of the gas supply path 1.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (7)

1. The utility model provides an emergency internal medicine's artifical auxiliary respiratory, its characterized in that, including supplying with gas circuit (1) and setting up gas flow detection device (2), gaseous heating device (3) and gaseous humidification device (5) on supplying with gas circuit (1), gas flow detection device (2) include body (21), first passageway (22) and second passageway (23) that the interval set up are disposed to body (21), body (21) still dispose with first passageway (22) cross arrangement's valve way (24), the both ends of valve way (24) communicate respectively and supply with gas circuit (1) and second passageway (23), wear to be equipped with valve rod (25) in valve way (24), valve rod (25) slide in the valve way, and adjust when the valve rod slides the flow area of first passageway (22), the one end of first passageway (22) is linked together with gaseous humidification device (3), the gas humidifying device (5) adjusts the water spraying amount according to the medium flow in the first channel.

2. An artificial respiration system for emergency internal medicine according to claim 1, wherein the valve channel (24) is provided at both ends thereof with a first piston chamber (241) and a second piston chamber (242), respectively, and a first piston (243) and a second piston (244) respectively disposed in the first piston chamber (241) and the second piston chamber (242), the first piston (243) and the second piston (244) are respectively disposed at both ends of the valve rod (25), and the first piston chamber (241) is located between the first passage (22) and the second passage (23).

3. An emergency medical assisted respiration system according to claim 2, wherein the first piston chamber (241) and the second piston chamber (242) are coaxially arranged with the valve passage (24), and the cross-sectional area of the first piston chamber (241) is smaller than that of the second piston chamber (242).

4. An artificial respiration system for emergency internal medicine according to claim 2, wherein the gas heating device (3) comprises a heating medium delivery branch (30) for delivering a heating medium, a control valve (4) is arranged on the heating medium delivery branch (30), the control valve (4) and the gas flow detection device (2) are arranged, and the valve rod (25) can drive the control valve (4) to work when moving in the valve channel (24).

5. The artificial respiration system for emergency internal medicine according to claim 4, wherein the gas heating device (3) comprises a first heat exchanger (31) and a second heat exchanger (32) which are arranged in series, the first heat exchanger comprises a first heat exchange branch (310) connected with the supply gas path (1) and a second heat exchange gas path (311) connected with the exhalation end of the human body, and the second heat exchanger (32) comprises a third heat exchange gas path (320) communicated with the heating medium conveying branch (30) and a fourth heat exchange branch (321) connected with the supply gas path (1).

6. An artificial respiration system according to claim 5, wherein the first heat exchange branch (310) is arranged upstream of the fourth heat exchange branch (321).

7. The artificial respiration system for emergency internal medicine according to claim 6, wherein the gas flow detection device (2), the gas heating device (3) and the gas humidifying device (5) are arranged in sequence along the gas supply direction of the gas supply circuit (1).

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