Air pressure adjusting device of anaesthesia machine

Abstract

The invention discloses an anaesthesia machine air pressure adjusting device, and relates to the technical field of anaesthesia machines, the anaesthesia machine air pressure adjusting device comprises a machine body, two exhaust pipes are fixedly installed on the machine body, and an adjusting assembly communicated with the two exhaust pipes is fixedly installed on the machine body; the two exhaust pipes are respectively an oxygen pipe and an anesthetic gas pipe; the adjusting assembly comprises two gas adjusting devices fixedly installed on the two exhaust pipes. Moisture in oxygen is filtered through the filter element, the purity of the oxygen is improved, and the uniformity of anesthesia mixed gas is ensured; the moisture content is reduced, non-uniform concentration of anesthetic gas is prevented, and the stability and consistency of anesthetic mixed gas are ensured; the water absorption sponge and the filter element are matched for use, so that the filtering capacity of the filter element is maintained, and long-term effective water filtration is ensured; through the specific mechanical structure design, uniform mixing of anesthetic gas and oxygen is achieved, the anesthetic gas is prevented from being directly transmitted into the body of a patient, and the uniformity of mixed gas is improved.

Description

Technical Field

[0001] The invention relates to the technical field of anesthesia machines, and in particular to a gas pressure regulating device for anesthesia machines. Background Art

[0002] Anesthetic drugs (usually volatile anesthetics) are placed in the evaporator of the anesthesia machine. The evaporator uses the changes in the temperature and heat source of the surrounding environment to convert the anesthetic drugs into evaporated gas. A certain amount of carrier gas (oxygen) is passed through, and part of the gas carries away the saturated anesthetic gas to form anesthetic vapor with a certain concentration, which is then delivered to the patient through the breathing tube of the anesthesia machine.

[0003] Uneven anesthetic gas leads to unstable concentration of anesthetic drugs inhaled by patients. If the concentration of anesthetic gas is too high, it may cause excessive anesthesia, which in turn inhibits the patient's respiratory and circulatory systems, such as respiratory depression and circulatory depression. In severe cases, it may even cause life-threatening complications such as respiratory and cardiac arrest.

[0004] At the same time, uneven anesthetic gas will interfere with the anesthesiologist's judgment and control of the depth of anesthesia. The doctor needs to constantly adjust the administration of anesthetic drugs according to the patient's response and the display of the anesthesia machine to ensure the appropriate depth of anesthesia. However, if the anesthetic gas is uneven, the doctor's judgment will be affected, making it difficult to accurately control the depth of anesthesia, which is very unfavorable to the smooth progress of the operation.

[0005] The stability of the gas source has an important impact on the output concentration of anesthetic gas. If the gas source pressure is unstable, for example, the central oxygen supply system commonly used in hospitals may experience a slight pressure drop during certain periods of time due to unbalanced pressure adjustment of the gas supply network. At this time, the gas source pressure obtained by the connected anesthesia machine is insufficient, which directly leads to fluctuations in the output concentration of anesthetic gas. Or if trace impurities and moisture are mixed into the gas source, the output concentration of anesthetic gas will inevitably be affected.

[0006] When oxygen is mixed with anesthetic gas, if the mixture is not uniform, it will also lead to uneven concentration distribution of anesthetic gas in the inhaled gas; this uneven concentration distribution will affect the diffusion and absorption of anesthetic gas in the patient's respiratory tract and alveoli, thereby affecting the anesthesia effect. Oxygen and anesthetic gas have different solubility in the blood, and the composition of the mixed gas will affect the dissolution equilibrium of anesthetic gas in the blood. If the mixture is not uniform, the concentration of anesthetic gas in some areas will be too high or too low, which will affect the uniformity and depth of anesthesia.

[0007] There will be residual water vapor in the oxygen of the existing anesthesia machine, which will affect the output concentration of the anesthetic gas. At the same time, the anesthesia machine obtains insufficient gas source pressure due to the unbalanced pressure adjustment of the gas supply network, which affects the mixing degree of oxygen and anesthetic gas, causing the output concentration of the anesthetic gas to fluctuate. Summary of the invention

[0008] The purpose of the present invention is to solve the problem that water vapor remains in the oxygen of the existing anesthesia machine, thereby affecting the output concentration of the anesthetic gas; at the same time, the anesthesia machine obtains insufficient gas source pressure due to the unbalanced pressure allocation of the gas supply network, which affects the mixing degree of oxygen and anesthetic gas, resulting in fluctuations in the output concentration of the anesthetic gas, and proposes an anesthesia machine gas pressure regulating device.

[0009] In order to achieve the above-mentioned object, the present invention adopts the following technology: an anesthesia machine gas pressure regulating device: comprising a machine body, on which two exhaust pipes are fixedly installed, and on which a regulating assembly connected with the two exhaust pipes is fixedly installed; the two exhaust pipes are respectively an oxygen pipe and an anesthesia gas pipe; The regulating assembly comprises two gas regulating devices fixedly mounted on two exhaust pipes, gas regulating cylinders are fixedly mounted on the two gas regulating devices, and a concentration uniformity device is installed in the gas regulating cylinders; Each gas regulating device comprises a connecting pipe 1 fixedly mounted on the exhaust pipe, a tee pipe being fixedly connected to the connecting pipe 1, a gas pressure regulating valve being rotatably mounted in the tee pipe via a bearing, and a connecting pipe 2 being fixedly connected to the other end of the tee pipe.

[0010] As a further description of the above-mentioned technology, a gas pressure regulating device for an anesthesia machine: The concentration uniformity device comprises a uniformity component and an oxygen purification component assembled in a gas regulating cylinder, a uniformity cavity is provided in the gas regulating cylinder, a gas guide cavity connected to the uniformity cavity is provided in the gas regulating cylinder, and the gas guide cavity is connected to the uniformity cavity, a gas outlet is fixedly installed on the gas regulating cylinder, the gas outlet is connected to the uniformity cavity, a pressure relief component is fixedly installed on the gas regulating cylinder, and the pressure relief component is connected to the gas guide cavity; The uniform component includes a rotating frame rotatably mounted in the gas regulating cylinder through a bearing, the rotating frame is connected to one of the connecting pipes 2, a plurality of arc plates are mounted on the rotating frame in a circular array, and a driving member driving the rotating frame to rotate is mounted on the gas regulating cylinder; The driving member comprises a base fixedly mounted on the gas regulating cylinder, a driving motor is fixedly mounted on the base, an output shaft of the driving motor is fixedly connected to a rotating frame, and a transmission gear is fixedly sleeved on the output shaft of the driving motor.

[0011] As a further description of the above-mentioned technology, a gas pressure regulating device for an anesthesia machine: The oxygen purification component includes a filter element rotatably installed in an air regulating cylinder through a bearing, one end of the filter element is fixedly connected to an adjusting rod, the adjusting rod passes through the air regulating cylinder, a water-absorbing sponge is slidably installed at the bottom of the air regulating cylinder, the water-absorbing sponge is in contact with the bottom of the filter element, and a driving spring is fixedly installed between the water-absorbing sponge and the air regulating cylinder.

[0012] As a further description of the above-mentioned technology, a gas pressure regulating device for an anesthesia machine: The air outlet component comprises an air outlet pipe fixedly mounted on the air regulating cylinder, the air outlet pipe is communicated with the uniform cavity, one end of the air outlet pipe is fixedly connected to an air outlet head, a switch slot is provided on the air outlet pipe, a switch plate is slidably mounted in the switch slot, an elastic sealing sleeve is fixedly mounted on the air regulating cylinder, the elastic sealing sleeve fits the outside of the switch plate, a slide plate is fixedly mounted on the switch plate, a tension spring is fixedly connected between the slide plate and the air regulating cylinder, a rack is fixedly connected to the slide plate, the rack is slidably mounted on the air regulating cylinder, and the rack is meshed and transmission-connected with a transmission gear; The pressure relief component comprises a pressure relief pipe fixedly mounted on the air regulating cylinder, and the pressure relief pipe is communicated with the air guide cavity.

[0013] In summary, due to the use of the above-mentioned technology, the gas pressure regulating device for an anesthesia machine has the following beneficial effects: 1. The anesthesia machine filters the moisture in oxygen through the filter element, which improves the purity of oxygen and ensures the uniformity of the anesthetic mixed gas; reduces the moisture content to prevent uneven concentration of anesthetic gas, and ensures the stability and consistency of the anesthetic mixed gas; through the coordinated use of the absorbent sponge and the filter element, the filtering capacity of the filter element is maintained, ensuring long-term and effective moisture filtration; through the specific mechanical structure design, the anesthetic gas and oxygen are evenly mixed and stably transmitted, avoiding the direct transmission of anesthetic gas into the patient's body, and improving the uniformity of the mixed gas; 2. The invention provides a protection mechanism by setting up multiple arc plates and rotating frames, so that the anesthetic mixed gas is allowed to be delivered to the patient only when the oxygen pressure reaches a certain level; when the oxygen pressure is unstable or too low, the tension spring drives the switch plate to close the outlet pipe to prevent the patient from inhaling excessive anesthetic gas; at the same time, the excessive air pressure is released through the pressure relief pipe to ensure that the pressure of the anesthetic gas inhaled by the patient is stable; these designs effectively improve the safety and reliability of anesthetic gas delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It shows a schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 It shows a schematic diagram of the installation state of the machine body and the gas regulating device provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of an adjustment component provided according to an embodiment of the present invention is shown; Figure 4 A schematic cross-sectional structural diagram of an adjustment component provided according to an embodiment of the present invention is shown; Figure 5A schematic diagram of an adjustment component provided in another angle according to an embodiment of the present invention is shown; Figure 6 A schematic front view of an adjustment component provided according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of a state where the gas regulating cylinder is removed according to an embodiment of the present invention is shown; Figure 8 A schematic diagram of the interior of an air regulating cylinder provided according to an embodiment of the present invention is shown.

[0015] Legend: 10. Machine body; 11. Exhaust pipe; 12. Driving motor; 13. Transmission gear; 14. Base; 15. Air cylinder; 20. Adjustment components; 21. Gas regulating device; 211. Connecting pipe 1; 212. Three-way pipe; 213. Connecting pipe 2; 214. Gas pressure regulating valve; 22. concentration uniformity device; 221. uniformity component; 2211. rotating frame; 2212. arc plate; 222. oxygen purification component; 2221. filter element; 2222. adjustment rod; 2223. water-absorbing sponge; 2224. driving spring; 23. air outlet; 231. air outlet pipe; 232. air outlet head; 233. switch plate; 234. elastic sealing sleeve; 235. slide plate; 236. tension spring; 237. rack; 24. Pressure relief parts; 241. Pressure relief pipe. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology of an anesthesia machine gas pressure regulating device in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1 - Figure 8 As shown, the present invention provides an anesthesia machine gas pressure regulating device, which includes a machine body 10, on which two exhaust pipes 11 are fixedly arranged, and at the same time, the machine body 10 is also provided with a regulating assembly 20 connected with the two exhaust pipes 11; the two exhaust pipes 11, namely the oxygen pipe and the anesthesia gas pipe, respectively bear important gas transmission responsibilities; Specifically, the regulating assembly 20 is composed of two gas regulating devices 21 fixedly mounted on the exhaust pipe 11, each gas regulating device 21 is fixedly mounted with a gas regulating cylinder 15, and the gas regulating cylinder 15 is equipped with a concentration uniformity device 22; Each gas regulating device 21 includes a connecting pipe 211 fixedly installed on the exhaust pipe 11, and a three-way pipe 212 is fixedly connected to the connecting pipe 211. The anesthetic gas reaches the three-way pipe 212 through the connecting pipe 211. A gas pressure regulating valve 214 is rotatably installed in the three-way pipe 212 through a bearing. There, the gas pressure of the anesthetic gas is accurately adjusted by the gas pressure regulating valve 214 in the three-way pipe 212; the other end of the three-way pipe 212 is fixedly connected to a connecting pipe 213; after the gas pressure is adjusted, the anesthetic gas is passed into the uniform cavity of the gas regulating cylinder 15 through the connecting pipe 213 to ensure uniform distribution of the gas.

[0018] At the same time, oxygen also reaches the three-way pipe 212 through another connecting pipe 1 211, and the air pressure of oxygen is also finely adjusted through the air pressure regulating valve 214 in the three-way pipe 212; the oxygen after air pressure adjustment is passed into the air guide cavity of the air regulating cylinder 15 through the connecting pipe 2 213 to ensure a stable supply of oxygen; Specifically, the concentration uniformity device 22 is composed of a uniformity component 221 and an oxygen purification component 222 assembled in the gas adjustment cylinder 15; the gas adjustment cylinder 15 is provided with a uniformity cavity inside, and at the same time, the gas adjustment cylinder 15 is provided with a gas guide cavity connected to the uniformity cavity, and the connectivity between the gas guide cavity and the uniformity cavity is ensured; in addition, a gas outlet 23 is fixedly installed on the gas adjustment cylinder 15, and the gas outlet 23 is connected to the uniformity cavity; a pressure relief component 24 is also fixedly installed on the gas adjustment cylinder 15, and the pressure relief component 24 is connected to the gas guide cavity; In detail, the uniform assembly 221 is composed of a rotating frame 2211 rotatably mounted in the gas regulating cylinder 15 by a bearing, the rotating frame 2211 is connected to one of the connecting pipes 213, a plurality of arc plates 2212 are mounted on the rotating frame 2211 in a circular array, and a driving member for driving the rotating frame 2211 to rotate is mounted on the gas regulating cylinder 15; Specifically, the driving assembly includes a base 14 fixedly mounted on the gas regulating cylinder 15, a driving motor 12 is provided on the base 14, an output shaft of the driving motor 12 is fixedly connected to the rotating frame 2211, and a transmission gear 13 is fixedly sleeved on the output shaft of the driving motor 12; the driving motor 12 is a common motor, and its output shaft can rotate at will. When the transmission of oxygen and anesthetic gas is stable, the driving motor 12 can also drive the rotating frame 2211 and the plurality of arc-shaped plates 2212 to rotate, as an auxiliary means for evenly mixing oxygen and anesthetic gas; The oxygen purification component 222 is composed of a filter element 2221 rotatably installed in the gas regulating cylinder 15 through a bearing, and one end of the filter element 2221 is fixedly connected to the adjusting rod 2222; the adjusting rod 2222 penetrates the gas regulating cylinder 15, and a water-absorbing sponge 2223 is slidably installed at the bottom of the gas regulating cylinder 15, and the water-absorbing sponge 2223 contacts the bottom of the filter element 2221; in addition, a driving spring 2224 is fixedly installed between the water-absorbing sponge 2223 and the gas regulating cylinder 15; a mounting plate is detachably installed on the gas regulating cylinder 15, and the mounting plate is located on one side of the water-absorbing sponge 2223; Anesthetic gas and oxygen are generated inside the body 10 of the anesthesia machine, and the oxygen is guided into the gas guide cavity of the gas regulating cylinder 15 through a special oxygen pipe; in the gas guide cavity, the oxygen passes through a carefully designed filter element 2221, and the function of the filter element 2221 is to remove moisture from the oxygen; through this filtering process, the moisture content in the oxygen can be significantly reduced, which is very important for ensuring the uniformity of the mixed gas in the later stage, because the reduction of moisture helps to improve the uniformity of the anesthetic gas mixing, thereby ensuring the safety and effectiveness of the anesthesia process; The filter element 2221 filters the water vapor in the oxygen through the filter medium inside it. The filter element 2221 contains hygroscopic materials inside, and these materials have a strong adsorption capacity for water vapor. When the oxygen containing water vapor passes through the filter element 2221, the water vapor will be adsorbed by these materials and fixed inside the filter element 2221, while the dry oxygen will flow out through the filter element 2221. The moisture content of oxygen filtered by the filter element 2221 is greatly reduced, which not only improves the purity of oxygen, but also creates favorable conditions for the uniform mixing of subsequent anesthetic mixed gas; reducing the moisture content can prevent uneven concentration of anesthetic gas due to condensation of moisture during the mixing process, thereby ensuring the stability and consistency of the anesthetic mixed gas; such a uniform mixed gas is essential for maintaining the physiological stability of the patient during the operation, and can effectively avoid uneven anesthesia depth or respiratory discomfort caused by fluctuations in gas concentration; The water-absorbing sponge 2223 is pushed into close contact with the filter element 2221 by the driving spring 2224, so that the excess water on the surface of the water-absorbing sponge 2223 can be effectively absorbed; this process is essential to maintain the high-efficiency filtering ability of the filter element 2221; in addition, the operator can control the rotation of the filter element 2221 by operating the adjustment lever 2222; In this way, the other side of the filter element 2221 can also contact the water-absorbing sponge 2223, ensuring that both sides of the filter element 2221 can participate in the water filtering process; when the device is not in use, the mounting plate can be easily removed, and then the water-absorbing sponge 2223 can be squeezed to effectively drain the water therein, ensuring that the device is dry and clean; The function of the filter element 2221 is to filter out moisture to ensure the purity of the gas; the oxygen processed by the filter element 2221 will pass through the gas guide cavity and then flow into the uniform cavity; at the same time, the evaporation cavity is responsible for transporting the evaporated anesthetic gas to the uniform cavity through a special anesthetic gas pipe; in the uniform cavity, the anesthetic gas is guided by the rotating frame 2211 and evenly distributed between the multiple arc plates 2212; It is worth noting that, during this process, the multiple arc plates 2212 remain stationary and do not rotate; this design is to prevent the anesthetic gas from being directly transmitted into the patient's body, thereby ensuring the uniform distribution of the anesthetic gas and the safety of the patient.

[0019] Only when oxygen is blown to a series of arc plates 2212 through the air guide cavity, these arc plates 2212 will start to rotate in the same direction; this rotation action allows oxygen to be fully mixed with the anesthetic gas between these arc plates 2212; when oxygen is mixed with the anesthetic gas between two adjacent arc plates 2212, this mixed gas will further push these arc plates 2212 to continue rotating; As the rotation continues, oxygen will be mixed with the anesthetic gas between each subsequent pair of arc plates 2212 in turn, thereby gradually forming a uniform anesthetic mixture gas; this uniform anesthetic mixture gas will eventually be delivered to the gas outlet head 232 through the gas outlet pipe 231; the gas outlet head 232 is connected to the external inhalation mask, ensuring that the anesthetic mixture gas can be smoothly delivered to the patient who needs anesthesia.

[0020] like Figure 3 - Figure 8 As shown, specifically, the gas outlet member 23 is composed of a gas outlet pipe 231 fixedly mounted on the gas regulating cylinder 15, and the gas outlet pipe 231 is communicated with the uniform cavity; a gas outlet head 232 is provided at one end of the gas outlet pipe 231, and a switch slot is provided thereon, in which a switch plate 233 is slidably mounted; an elastic sealing sleeve 234 is fixedly mounted on the gas regulating cylinder 15, and the elastic sealing sleeve 234 is tightly fitted with the outer surface of the switch plate 233; On the switch plate 233, a slide plate 235 is fixedly installed, and a tension spring 236 is used to realize a fixed connection between the slide plate 235 and the air regulating cylinder 15; a rack 237 is further fixedly connected to the slide plate 235, and the rack 237 is slidably installed on the air regulating cylinder 15 and forms a meshing transmission connection with the transmission gear 13; the pressure relief member 24 is composed of a pressure relief pipe 241 fixedly installed on the air regulating cylinder 15, and the pressure relief pipe 241 is connected to the air guide cavity; The pressure relief pipe 241 is an existing technology, which ensures that the equipment or pipeline will not be damaged due to excessive internal air pressure during normal operation; when the internal air pressure exceeds the preset safety value, the pressure relief pipe 241 will play a role; when the internal air pressure increases, the valve in the pressure relief pipe 241 will sense this change; when the air pressure reaches or exceeds the set value, the valve will automatically open and deform, thereby allowing the gas to flow from the high-pressure area to the atmosphere; This mechanism will only be activated when the oxygen pressure reaches a certain threshold; at this time, the multiple arc plates 2212 and the rotating frame 2211 will be subjected to sufficient pressure and start to rotate; this rotation will in turn drive the output shaft of the drive motor 12 and the transmission gear 13 to start rotating; there is a precise meshing transmission relationship between the transmission gear 13 and the rack 237; When the transmission gear 13 rotates, the rack 237 will slide upward accordingly; as the rack 237 rises, the slide plate 235 will also move upward accordingly, and push the switch plate 233 to move to a specific position. During this process, the tension spring 236 will be stretched; when the switch plate 233 moves into place, it will open the outlet pipe 231, allowing the anesthetic mixed gas to be transported into the patient's body through this pipe; this series of actions constitutes a sophisticated protection mechanism to ensure that the patient will receive anesthetic gas only when the oxygen pressure reaches a safe level; When the oxygen pressure of the oxygen source becomes unstable, or the oxygen pressure drops to a too low level due to some reasons, that is, when the oxygen pressure is lower than the set threshold, the tension spring 236 contracts, and this action drives the switch plate 233 to move accordingly, thereby closing the air outlet pipe 231. This design is to prevent the patient from inhaling too high anesthesia gas concentration, thereby avoiding possible risks and injuries to the patient. On the other hand, when the oxygen pressure in the gas regulating cylinder 15 is too high, that is, the oxygen pressure exceeds the safe range, the system will discharge the excess gas through the pressure relief pipe 241; this process ensures that the pressure of the anesthetic gas inhaled by the patient remains at a stable and safe level, thereby ensuring the patient's breathing safety during the operation.

[0021] Working principle: Anesthetic gas and oxygen are generated in the body 10 of the anesthesia machine. The oxygen enters the gas guide cavity of the gas regulating cylinder 15 through the oxygen pipe. The oxygen is filtered through the filter element 2221 in the gas guide cavity to reduce the moisture content in the oxygen, thereby improving the uniformity of the later anesthetic mixed gas. The moisture content of oxygen filtered by the filter element 2221 is greatly reduced, which not only improves the purity of oxygen, but also creates favorable conditions for the uniform mixing of subsequent anesthetic mixed gas; reducing the moisture content can prevent uneven concentration of anesthetic gas due to condensation of moisture during the mixing process, thereby ensuring the stability and consistency of the anesthetic mixed gas; such a uniform mixed gas is essential for maintaining the physiological stability of the patient during the operation, and can effectively avoid uneven anesthesia depth or respiratory discomfort caused by fluctuations in gas concentration; The water-absorbing sponge 2223 will contact the filter element 2221 under the push of the driving spring 2224, so as to absorb the excess water on the water-absorbing sponge 2223, thereby ensuring the filtering capacity of the filter element 2221. The operator can also operate the adjusting rod 2222 to drive the filter element 2221 to rotate, so that the other side of the filter element 2221 contacts the water-absorbing sponge 2223, so that both sides of the filter element 2221 can filter water. When not in use, the mounting plate can be removed and the water-absorbing sponge 2223 can be squeezed to discharge the water in the water-absorbing sponge 2223. After the filter element 2221 filters the water, oxygen flows into the uniform cavity through the gas guide cavity, and the evaporation cavity flows the evaporated anesthetic gas into the uniform cavity through the anesthetic gas pipe, and the anesthetic gas is evenly distributed between the multiple curved plates 2212 along the rotating frame 2211, while the multiple curved plates 2212 do not rotate at this time, so as to prevent the anesthetic gas from being directly transmitted to the patient's body; Only when oxygen blows the multiple curved plates 2212 through the air guide cavity, the multiple curved plates 2212 will rotate in one direction and mix the oxygen with the anesthetic gas between the multiple curved plates 2212. When the oxygen is mixed with the anesthetic gas between two curved plates 2212, the multiple curved plates 2212 will be pushed to rotate, so that the oxygen is mixed with the anesthetic gas between the lower two curved plates 2212, thereby forming a uniform anesthetic mixed gas, and the uniform anesthetic mixed gas will be transmitted to the gas outlet head 232 through the gas outlet pipe 231, and the gas outlet head 232 is connected to the external inhalation mask, so as to transport the anesthetic mixed gas; Only when the oxygen pressure reaches a certain level, that is, when the multiple arc plates 2212 and the rotating frame 2211 are driven to rotate, and the output shaft of the driving motor 12 and the transmission gear 13 are driven to rotate, the transmission gear 13 and the rack 237 are meshed and driven, so that the rack 237 and the slide plate 235 slide upward, the tension spring 236 is stretched, and the switch plate 233 is driven to open the air outlet pipe 231, the anesthetic mixed gas will be delivered to the patient's body through the air outlet pipe 231, that is, a protection mechanism is formed; When the air pressure of the oxygen source is unstable until the oxygen pressure is too low, the tension spring 236 contracts and drives the switch plate 233 to close the air outlet pipe 231 to prevent the patient from inhaling too high a concentration of anesthetic gas; when the air pressure in the gas regulating cylinder 15 is too high, that is, the oxygen pressure is too high, the excess gas is discharged through the pressure relief pipe 241, thereby ensuring that the pressure of the anesthetic gas inhaled by the patient is stable.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacement or changes to an anesthesia machine gas pressure regulating device and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anesthesia machine air pressure regulating device, comprising a machine body (10), two exhaust pipes (11) fixedly mounted on the machine body (10), and a regulating assembly (20) fixedly mounted on the two exhaust pipes (11), characterized in that: The regulating assembly (20) comprises two gas regulating devices (21) fixedly mounted on two exhaust pipes (11), a gas regulating cylinder (15) fixedly mounted on the two gas regulating devices (21), and a concentration uniformity device (22) installed in the gas regulating cylinder (15); The concentration uniformization device (22) comprises a uniformization component (221) and an oxygen purification component (222) which are assembled in the gas regulating cylinder (15); a gas outlet component (23) is fixedly mounted on the gas regulating cylinder (15); and a pressure relief component (24) is fixedly mounted on the gas regulating cylinder (15); The uniform component (221) comprises a rotating frame (2211) rotatably mounted in the gas regulating cylinder (15) via a bearing, a plurality of arc-shaped plates (2212) being mounted on the rotating frame (2211) in a circular array, and the rotating frame (2211) is in communication with the gas regulating device (21).

2. The gas pressure regulating device for an anesthesia machine according to claim 1, characterized in that: Each gas regulating device (21) comprises a connecting pipe 1 (211) fixedly mounted on the exhaust pipe (11), a three-way pipe (212) fixedly connected to the connecting pipe 1 (211), a gas pressure regulating valve (214) rotatably mounted in the three-way pipe (212) via a bearing, and a connecting pipe 2 (213) fixedly connected to the other end of the three-way pipe (212).

3. The gas pressure regulating device for an anesthesia machine according to claim 2, characterized in that: The rotating frame (2211) is in communication with one of the second connecting pipes (213), and the gas regulating cylinder (15) is equipped with a driving member for driving the rotating frame (2211) to rotate.

4. The gas pressure regulating device for an anesthesia machine according to claim 3, characterized in that: The driving member comprises a base (14) fixedly mounted on the gas regulating cylinder (15), a driving motor (12) fixedly mounted on the base (14), an output shaft of the driving motor (12) fixedly connected to a rotating frame (2211), and a transmission gear (13) fixedly sleeved on the output shaft of the driving motor (12).

5. The gas pressure regulating device for an anesthesia machine according to claim 1, characterized in that: The oxygen purification component (222) comprises a filter element (2221) rotatably mounted in the gas regulating cylinder (15) via a bearing, one end of the filter element (2221) being fixedly connected to an adjustment rod (2222), and the adjustment rod (2222) passes through the gas regulating cylinder (15); A water-absorbing sponge (2223) is slidably mounted in the air regulating cylinder (15); the water-absorbing sponge (2223) is in contact with the bottom of the filter element (2221); and a driving spring (2224) is fixedly mounted between the water-absorbing sponge (2223) and the air regulating cylinder (15).

6. The gas pressure regulating device for an anesthesia machine according to claim 1, characterized in that: The air outlet member (23) comprises an air outlet pipe (231) fixedly mounted on the air regulating cylinder (15); one end of the air outlet pipe (231) is fixedly connected to an air outlet head (232); a switch slot is provided on the air outlet pipe (231); a switch plate (233) is slidably mounted in the switch slot; an elastic sealing sleeve (234) is fixedly mounted on the air regulating cylinder (15); the elastic sealing sleeve (234) is fitted to the outside of the switch plate (233).

7. The gas pressure regulating device for an anesthesia machine according to claim 6, characterized in that: A slide plate (235) is fixedly mounted on the switch plate (233); a tension spring (236) is fixedly connected between the slide plate (235) and the air regulating cylinder (15); a rack (237) is fixedly connected to the slide plate (235); the rack (237) is slidably mounted on the air regulating cylinder (15); and the rack (237) is meshed and transmission-connected with the transmission gear (13).

8. The gas pressure regulating device for an anesthesia machine according to claim 1, characterized in that: The pressure relief component (24) comprises a pressure relief pipe (241) fixedly mounted on the gas regulating cylinder (15).

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