Anesthetic gas anti-inhalation device special for anesthetist in operating room

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an anesthetic gas anti-inhalation device special for an anesthetist in an operating room, which comprises a breathing mask, a connecting hose, a sealed sterilization box, a conveying pipe, a mass flow meter, a disinfection assembly, a concentration adjusting assembly and a flow limiting assembly, the output end of the sealed sterilization box is tightly attached to one end of the connecting hose, the conveying pipe is installed on the outer side of the air inlet end of the sealed sterilization box, the mass flow meters are installed on the two sides of the sealed sterilization box, the disinfection assembly is installed in the sealed sterilization box, and the concentration adjusting assembly is installed on one side of the disinfection assembly. The flow limiting assembly is mounted in the sealed sterilization box; according to the device, the two mass flow meters are additionally arranged on the two sides of the sealed sterilization box to detect the flow of inhaled anesthetic gas, the multiple ultraviolet lamp poles are used for sterilizing and disinfecting the inhaled anesthetic gas, the introduction amount of the anesthetic gas is controlled by rotating the handle rod at the bottom of the two-way connector, and then the health of a patient is protected.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an anesthetic gas inhalation prevention device specially used by an anesthesiologist in an operating room. Background Art

[0002] With the continuous development of social and economic conditions, anesthetic gases have been widely used in medical means. Anesthetic gases such as enflurane, ether and nitrous oxide are injected into the human body to reduce the pain of the victim and ensure the normal progress of the operation. Anesthetic gases have promoted the progress of modern medicine and the improvement of the level of civilization of human society. However, the leakage of anesthetic gases may cause doctors to fall into a coma and cause medical accidents. Therefore, anti-inhalation devices are needed to solve the problem.

[0003] There are many types of anti-inhalation devices on the market. Generally, anti-inhalation devices have low specificity. The anesthetic gas storage devices on the market are leak-proof, but they are powerless in the face of tube rupture or side leakage of the nebulizer. Therefore, a mask-type anti-inhalation device is needed. However, the back of the mask may become locally moist due to exhalation, or the anesthetic gas may flow back into the mask through the exhaust pipe when exhaling, causing the doctor to become unconscious. In addition, the traditional device does not involve relevant sterilization operations in the breathing circuit, so that the anesthesia device may be contaminated by the patient's exhaled gas and secretions.

[0004] Therefore, an anesthetic gas inhalation prevention device specially used by anesthesiologists in operating rooms is designed to solve the above problems. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides an anesthetic gas inhalation prevention device dedicated to anesthesiologists in operating rooms to solve the problems of sterilization and concentration adjustment of anesthetic gas.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anesthetic gas inhalation prevention device dedicated to anesthesiologists in an operating room, comprising a sterilization type inhalation prevention mechanism, wherein the sterilization type inhalation prevention mechanism comprises a breathing mask, a connecting hose, a sealed sterilization box, a delivery pipe, a mass flow meter, a disinfection component, a concentration adjustment component and a current limiting component, wherein the air inlet end of the breathing mask is clamped with one end of the connecting hose, the output end of the sealed sterilization box is tightly fitted with one end of the connecting hose, the delivery pipe is installed on the outside of the air inlet end of the sealed sterilization box, the mass flow meter is installed on both sides of the sealed sterilization box, the disinfection component is installed inside the sealed sterilization box, the concentration adjustment component is installed on one side of the disinfection component, and the current limiting component is installed inside the sealed sterilization box; The breathing mask is used together with the connecting hose for patients to inhale anesthetics, the sealed sterilization box is used to provide a sealed environment for the disinfection component and the concentration adjustment component, the delivery pipe is used to connect the anesthetic and deliver the anesthetic gas, the mass flow meter is used to monitor the anesthetic dosage on both sides of the sealed sterilization box and for leakage detection, the disinfection component is used for efficient sterilization of inhaled anesthetic gas, the concentration adjustment component is used to reduce or increase the concentration of inhaled anesthetic gas, and the flow limiting component is used to unidirectionally control the anesthetic flow rate passing into the connecting hose.

[0007] Preferably, the flow limiting assembly includes a straight-connecting pipe, a two-way joint, a handle rod, an air intake baffle and a hollow cover. The straight-connecting pipe is installed and clamped on the inner side of the connecting hose, and the two-way joint is installed on the other side of the straight-connecting pipe. The handle rod is rotatably connected to the bottom of the two-way joint, the air intake baffle is fixedly connected to the upper end of the handle rod, and the hollow cover is fixedly connected to the inner side of the top of the two-way joint.

[0008] Preferably, the disinfection assembly includes an L-shaped elbow, a clamping disc, a hollow sleeve, a sealing cover, a handle ring and an ultraviolet lamp post, the L-shaped elbow is installed at the upper end of the two-way joint, the clamping disc is fixedly connected to the top outside of the L-shaped elbow, the hollow sleeve is installed on the outside of the clamping disc, the sealing cover plate fits tightly on the top of the hollow sleeve, the handle ring is installed at the upper end of the sealing cover plate, and the ultraviolet lamp post is arranged in an annular array inside the hollow sleeve and is used for disinfecting anesthetic gas.

[0009] Preferably, the concentration adjustment component includes a support frame, a connecting frame, a guide shaft, a socket disk, a circular frame and nanofiber filter paper, the support frame is fixedly connected to the inside of the sealed sterilization box, the connecting frame is socketed on the outside of the hollow sleeve, the guide shaft is rotatably connected to one side of the connecting frame, the socket disk is clamped on the outer wall of the guide shaft, the circular frame is fixedly connected to the outside of the socket disk, and the nanofiber filter paper is installed on the inside of the socket disk.

[0010] Preferably, a stepper motor, a drive shaft and a heterogenic gear are also provided on the other side of the guide shaft, the stepper motor is installed on the top of the support frame, one end of the drive shaft is fixedly connected to the motor shaft of the stepper motor, and the heterogenic gear is sleeved on the opposite sides of the drive shaft and the guide shaft.

[0011] Preferably, an electric telescopic rod, a sleeve, a positioning seat, a sponge board and a linear shaft are also provided on the inner side of the connecting bracket; the output end of the electric telescopic rod is fixedly connected to the middle part of the positioning seat; the sleeve is installed on the outer side of the connecting bracket and is used to connect the electric telescopic rod; the positioning seat is slidably connected to the inner side of the sleeve; the sponge board is rotatably connected to the outer side of the positioning seat; and the linear shaft passes through the outer side of the positioning seat and is fixedly connected to the inner surface of the sleeve.

[0012] Preferably, a small motor is also provided on the inner side of the positioning seat, and the output end of the small motor is fixedly connected to the middle part of one side of the sponge board.

[0013] Preferably, a notch matching the size of the circular frame is also provided inside the clamping plate.

[0014] Preferably, the nanofiber filter papers are provided in three groups, and the fiber density of the three groups of nanofiber filter papers increases successively.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the device detects the flow rate of inhaled anesthetic gas by adding two sets of mass flow meters on both sides of the sealed sterilization box, and determines whether there is anesthetic gas leakage in the device by comparing the two sets of flow detection values, thereby alerting the anesthesiologist to prevent inhalation of anesthetic gas.

[0016] 2. In the present invention, the device sterilizes and disinfects the inhaled anesthetic gas by using multiple sets of ultraviolet lamp columns, and controls the amount of anesthetic gas introduced by rotating the handle bar at the bottom of the two-way joint, thereby protecting the health of the patient.

[0017] 3. In the present invention, three groups of nanofiber filter papers with different fiber densities are used to control the concentration of anesthetic gas, and the rotating sponge plate can be used to clean the nanofiber filter papers that have been used for a long time without disassembly, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a cross-sectional view of the sealed sterilization box in the present invention; Figure 3 It is a schematic diagram of the structure of the activated carbon filler box in the present invention; Figure 4 It is a cross-sectional view of the two-way connector in the present invention; Figure 5It is an exploded view of the hollow cover and the air intake baffle of the present invention; Figure 6 It is a schematic diagram of the structure inside the hollow casing in the present invention; Figure 7 is a distribution diagram of the eccentric gears in the present invention; Figure 8 It is a cross-sectional view of the interior of the sleeve in the present invention; Fig. 9 This is a distribution diagram of the small and medium-sized motors of the present invention.

[0019] In the figure: 1. Sterilization type anti-inhalation mechanism; 2. Respiratory mask; 3. Connecting hose; 4. Sealed sterilization box; 5. Delivery pipe; 6. Mass flow meter; 7. Disinfection assembly; 8. Concentration adjustment assembly; 9. Current limiting assembly; 10. Direct connection pipe; 11. Two-way joint; 12. Handle bar; 13. Inlet baffle; 14. Hollow cover; 15. L-shaped elbow; 16. Snap-on disc; 17. Hollow sleeve; 18. Sealing cover; 19. Handle ring; 20. Ultraviolet lamp column; 21. Support frame; 22. Connecting bracket; 23. Guide shaft; 24. Socket disc; 25. Circular frame; 26. Nanofiber filter paper; 27. Stepper motor; 28. Drive shaft; 29. ​​Heteromorphic gear; 30. Electric telescopic rod; 31. Sleeve; 32. Positioning seat; 33. Sponge board; 34. Linear axis; 35. Small motor; 36. Notch; 37. Activated carbon filler box. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0021] like Figure 1-8 The anesthetic gas inhalation prevention device shown is dedicated to an anesthesiologist in an operating room, comprising a sterilization type inhalation prevention mechanism 1, the sterilization type inhalation prevention mechanism 1 comprising a breathing mask 2, a connecting hose 3, a sealed sterilization box 4, a delivery pipe 5, a mass flow meter 6, a disinfection component 7, a concentration adjustment component 8 and a current limiting component 9, the air inlet end of the breathing mask 2 is clamped with one end of the connecting hose 3, the output end of the sealed sterilization box 4 is tightly fitted with one end of the connecting hose 3, the delivery pipe 5 is installed on the outside of the air inlet end of the sealed sterilization box 4, the mass flow meter 6 is installed on both sides of the sealed sterilization box 4, the disinfection component 7 is installed inside the sealed sterilization box 4, the concentration adjustment component 8 is installed on one side of the disinfection component 7, and the current limiting component 9 is installed inside the sealed sterilization box 4; The breathing mask 2 cooperates with the connecting hose 3 for the patient to inhale the anesthetic, the sealed sterilization box 4 is used to provide a sealed environment for the disinfection component 7 and the concentration adjustment component 8, the delivery pipe 5 is used to connect the anesthetic and deliver the anesthetic gas, the mass flow meter 6 is used to monitor the anesthetic dosage on both sides of the sealed sterilization box 4 and for leakage detection, the disinfection component 7 is used for efficient sterilization of inhaled anesthetic gas, the concentration adjustment component 8 is used to reduce or increase the concentration of the inhaled anesthetic gas, and the current limiting component 9 is used to unidirectionally control the anesthetic flow rate entering the connecting hose 3.

[0022] The device detects the flow rate of inhaled anesthetic gas by adding two sets of mass flow meters 6 on both sides of the sealed sterilization box 4, and determines whether there is anesthetic gas leakage in the device by comparing the two sets of flow detection values, thereby alerting the anesthesiologist to prevent inhalation of anesthetic gas. The concentration of anesthetic gas is controlled by three sets of nanofiber filter papers 26 with different fiber densities, and the rotating sponge plate 33 can be used to clean the nanofiber filter paper 26 that has been used for a long time without removal, which is easy to use.

[0023] The flow limiting assembly 9 includes a straight-connecting pipe 10, a two-way joint 11, a handle rod 12, an air intake baffle 13 and a hollow cover 14. The straight-connecting pipe 10 is installed and clamped on the inner side of the connecting hose 3, the two-way joint 11 is installed on the other side of the straight-connecting pipe 10, the handle rod 12 is rotatably connected to the bottom of the two-way joint 11, the air intake baffle 13 is fixedly connected to the upper end of the handle rod 12, and the hollow cover 14 is fixedly connected to the top inner side of the two-way joint 11.

[0024] The breathing mask 2 can be hung on the patient's face, and then the delivery tube 5 can be connected to the outer side of the gas delivery pipe port of the anesthesia machine. When the anesthetic gas is inhaled, the gas flows from the delivery tube 5 into the sealed sterilization box 4 and is then inhaled into the patient's body through the connecting hose 3. During this process, the anesthetic gas in the delivery tube 5 enters the hollow sleeve 17. The ultraviolet lamp column 20 can be turned on in advance to ensure the irradiation intensity, thereby sterilizing the anesthetic gas retained in the hollow sleeve 17; on the other hand, the staff can open the box cover of the sealed sterilization box in advance to rotate the handle bar 12, and the handle bar 12 drives the upper air intake baffle 13 to rotate. When the air intake baffle 13 coincides with the air discharge point of the hollow cover 14, the anesthetic is fully blocked, and the staff can control the rotation angle of the air intake baffle 13 by themselves to control the overall intake amount of anesthetic gas, thereby improving the inhalation safety.

[0025] The disinfection assembly 7 includes an L-shaped elbow 15, a clamping disc 16, a hollow sleeve 17, a sealing cover plate 18, a handle ring 19 and an ultraviolet lamp column 20. The L-shaped elbow 15 is installed at the upper end of the two-way joint 11, the clamping disc 16 is fixedly connected to the top outside of the L-shaped elbow 15, the hollow sleeve 17 is installed on the outside of the clamping disc 16, the sealing cover plate 18 is tightly fitted on the top of the hollow sleeve 17, the handle ring 19 is installed at the upper end of the sealing cover plate 18, and the ultraviolet lamp column 20 is arranged in a ring array inside the hollow sleeve 17 and is used for disinfecting anesthetic gas.

[0026] The concentration adjustment component 8 includes a support frame 21, a connecting frame 22, a guide shaft 23, a socket disk 24, a circular frame 25 and a nanofiber filter paper 26. The support frame 21 is fixedly connected to the inside of the sealed sterilization box 4, the connecting frame 22 is socketed on the outside of the hollow sleeve 17, the guide shaft 23 is rotatably connected to one side of the connecting frame 22, the socket disk 24 is clamped on the outer wall of the guide shaft 23, the circular frame 25 is fixedly connected to the outside of the socket disk 24, and the nanofiber filter paper 26 is installed on the inside of the socket disk 24.

[0027] When the anesthetic gas is introduced into the L-shaped elbow 15, it will first flow through the clamping disk 16. During this process, the stepper motor 27 above the support frame 21 can be started to drive the drive shaft 28 to rotate. The eccentric gears 29 of the drive shaft 28 and the guide shaft 23 are meshed. Under the gear transmission, the guide shaft 23 can drive the sleeve disk 24 and the circular frame 25 to rotate. Multiple groups of circular frames 25 can be inserted into the inner side of the clamping disk 16 in a single group along the slot 36. The concentration of the anesthetic gas is controlled by three groups of nanofiber filter papers 26 with different fiber densities, thereby achieving the purpose of gas concentration regulation.

[0028] A stepper motor 27, a drive shaft 28 and a skew gear 29 are also provided on the other side of the guide shaft 23. The stepper motor 27 is installed on the top of the support frame 21, one end of the drive shaft 28 is fixedly connected to the motor shaft of the stepper motor 27, and the skew gear 29 is sleeved on the opposite sides of the drive shaft 28 and the guide shaft 23.

[0029] An electric telescopic rod 30, a sleeve 31, a positioning seat 32, a sponge board 33 and a linear shaft 34 are also provided on the inner side of the connecting bracket 22. The output end of the electric telescopic rod 30 is fixedly connected to the middle of the positioning seat 32. The sleeve 31 is installed on the outer side of the connecting bracket 22 and is used to connect the electric telescopic rod 30. The positioning seat 32 is slidably connected to the inner side of the sleeve 31. The sponge board 33 is rotatably connected to the outer side of the positioning seat 32. The linear shaft 34 passes through the outer side of the positioning seat 32 and is fixedly connected to the inner surface of the sleeve 31.

[0030] A small motor 35 is also provided inside the positioning seat 32 , and an output end of the small motor 35 is fixedly connected to the middle part of one side of the sponge board 33 .

[0031] When the mesh of the nanofiber filter paper 26 that has been used for a long time needs to be cleaned, the used nanofiber filter paper 26 can be rotated to the cleaning position, and the electric telescopic rod 30 on the outside of the sleeve 31 is started to push the positioning seat 32. Under the limiting effect of the linear shaft 34, the positioning seat 32 can drive the sponge board 33 to translate along the inside of the sleeve 31 to the surface of the nanofiber filter paper 26 and fit the surface of the filter paper. Then, the small motor 35 on the inside is started to drive the sponge board 33 to rotate, thereby cleaning the used nanofiber filter paper 26 to achieve a self-cleaning effect of the filter paper.

[0032] The interior of the clamping plate 16 is also provided with a notch 36 matching the size of the circular frame 25 .

[0033] Three groups of nanofiber filter papers 26 are provided, and the fiber densities of the three groups of nanofiber filter papers 26 increase in sequence.

[0034] Working principle: The breathing mask 2 can be hung on the patient's face, and then the delivery tube 5 can be connected to the outside of the gas delivery pipe port of the anesthesia machine. When the anesthetic gas is inhaled, the gas flows from the delivery tube 5 into the sealed sterilization box 4, and then is inhaled into the patient's body through the connecting hose 3. Two sets of mass flow meters 6 are added on both sides of the sealed sterilization box 4 to detect the flow rate of the inhaled anesthetic gas. The two sets of flow detection values ​​are compared to determine whether there is an anesthetic gas leak in this device. During this process, the anesthetic gas in the delivery tube 5 enters the hollow sleeve 17, and the ultraviolet lamp column 20 can be turned on in advance to ensure the irradiation intensity, so as to sterilize the anesthetic gas retained in the hollow sleeve 17; on the other hand, the staff can open the box cover of the sealed sterilization box in advance to rotate the handle rod 12, and the handle rod 12 drives the upper air intake baffle 13 to rotate. When the air intake baffle 13 coincides with the air leakage point of the hollow cover 14, the anesthetic is completely blocked. The staff can control the rotation angle of the air intake baffle 13 by themselves to control the overall intake amount of the anesthetic gas, thereby improving the safety of inhalation. The gas finally passes through the activated carbon filler box 37 to remove organic pollution. It can also provide attachment sites for bacteria, further reducing the amount of bacteria inhaled; when the anesthetic gas is introduced into the direct-connection tube 10, it will first flow through the clamping disk 16. During this process, the stepper motor 27 above the support frame 21 can be started to drive the drive shaft 28 to rotate, and the eccentric gears 29 of the drive shaft 28 and the guide shaft 23 are meshed. Under the gear transmission, the guide shaft 23 can drive the sleeve disk 24 and the circular frame 25 to rotate. Multiple groups of circular frames 25 can be inserted into the inner side of the clamping disk 16 in a single group along the notch 36. The concentration of the anesthetic gas is controlled by three groups of nanofiber filter papers 26 with different fiber densities, thereby achieving the purpose of gas concentration regulation. On the other hand, when the mesh of the nanofiber filter paper 26 that has been used for a long time needs to be cleaned, the used nanofiber filter paper 26 can be rotated to the cleaning position, and the electric telescopic rod 30 on the outside of the sleeve 31 can be started to push the positioning seat 32. Under the limiting effect of the linear shaft 34, the positioning seat 32 can drive the sponge board 33 to translate along the inside of the sleeve 31 to the surface of the nanofiber filter paper 26 and fit with the surface of the filter paper. Then, the small motor 35 on the inside is started to drive the sponge board 33 to rotate, thereby cleaning the used nanofiber filter paper 26 to achieve a self-cleaning effect of the filter paper.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anesthetic gas inhalation prevention device for anesthesiologists in operating rooms, comprising a sterile inhalation prevention mechanism (1), characterized in that: The sterilization type anti-inhalation mechanism (1) comprises a breathing mask (2), a connecting hose (3), a sealed sterilization box (4), a delivery pipe (5), a mass flow meter (6), a disinfection component (7), a concentration adjustment component (8) and a flow limiting component (9); the air inlet end of the breathing mask (2) is snap-connected with one end of the connecting hose (3); the output end of the sealed sterilization box (4) is tightly fitted with one end of the connecting hose (3); the delivery pipe (5) is installed on the outside of the air inlet end of the sealed sterilization box (4); the mass flow meter (6) is installed on both sides of the sealed sterilization box (4); the disinfection component (7) is installed inside the sealed sterilization box (4); the concentration adjustment component (8) is installed on one side of the disinfection component (7); and the flow limiting component (9) is installed inside the sealed sterilization box (4); The breathing mask (2) cooperates with the connecting hose (3) for the patient to inhale an anesthetic agent; the sealed sterilization box (4) is used to provide a sealed environment for the disinfection component (7) and the concentration adjustment component (8); the delivery pipe (5) is used to connect the anesthetic agent and deliver the anesthetic gas; the mass flow meter (6) is used to monitor the anesthetic dosage on both sides of the sealed sterilization box (4) and to detect gas leakage; the disinfection component (7) is used for efficient sterilization of the inhaled anesthetic gas; the concentration adjustment component (8) is used to reduce or increase the concentration of the inhaled anesthetic gas; and the flow limiting component (9) is used to unidirectionally control the flow of the anesthetic agent entering the connecting hose (3).

2. The anesthetic gas inhalation prevention device for anesthesiologists in an operating room according to claim 1, characterized in that: The flow limiting assembly (9) comprises a straight-connecting pipe (10), a two-way joint (11), a handlebar (12), an air intake baffle (13) and a hollow cover (14); the straight-connecting pipe (10) is mounted and clamped on the inner side of the connecting hose (3); the two-way joint (11) is mounted on the other side of the straight-connecting pipe (10); the handlebar (12) is rotatably connected to the bottom of the two-way joint (11); the air intake baffle (13) is fixedly connected to the upper end of the handlebar (12); and the hollow cover (14) is fixedly connected to the inner side of the top of the two-way joint (11).

3. The anesthetic gas inhalation prevention device for anesthesiologists in an operating room according to claim 2, characterized in that: The disinfection assembly (7) comprises an L-shaped elbow (15), a clamping plate (16), a hollow sleeve (17), a sealing cover plate (18), a handle ring (19) and an ultraviolet lamp post (20); the L-shaped elbow (15) is mounted on the upper end of the two-way joint (11); the clamping plate (16) is fixedly connected to the top outer side of the L-shaped elbow (15); the hollow sleeve (17) is mounted on the outer side of the clamping plate (16); the sealing cover plate (18) is tightly fitted on the top of the hollow sleeve (17); the handle ring (19) is mounted on the upper end of the sealing cover plate (18); and the ultraviolet lamp post (20) is arranged in a circular array inside the hollow sleeve (17) and is used for disinfecting anesthetic gas.

4. The anesthetic gas inhalation prevention device for anesthesiologists in an operating room according to claim 3, characterized in that: The concentration adjustment component (8) comprises a support frame (21), a connecting frame (22), a guide shaft (23), a sleeve disc (24), a circular frame (25) and a nanofiber filter paper (26); the support frame (21) is fixedly connected to the inside of the sealed sterilization box (4); the connecting frame (22) is sleeved on the outside of the hollow sleeve (17); the guide shaft (23) is rotatably connected to one side of the connecting frame (22); the sleeve disc (24) is clamped on the outer wall of the guide shaft (23); the circular frame (25) is fixedly connected to the outside of the sleeve disc (24); and the nanofiber filter paper (26) is installed on the inside of the sleeve disc (24).

5. The anesthetic gas inhalation prevention device for anesthesiologists in an operating room according to claim 4, characterized in that: A stepper motor (27), a drive shaft (28) and an eccentric gear (29) are also provided on the other side of the guide shaft (23); the stepper motor (27) is mounted on the top of the support frame (21); one end of the drive shaft (28) is fixedly connected to the motor shaft of the stepper motor (27); and the eccentric gear (29) is sleeved on opposite sides of the drive shaft (28) and the guide shaft (23).

6. The anesthetic gas inhalation prevention device for anesthesiologists in an operating room according to claim 4, characterized in that: An electric telescopic rod (30), a sleeve (31), a positioning seat (32), a sponge plate (33) and a linear shaft (34) are further provided on the inner side of the connecting bracket (22); the output end of the electric telescopic rod (30) is fixedly connected to the middle part of the positioning seat (32); the sleeve (31) is mounted on the outer side of the connecting bracket (22) and is used to connect the electric telescopic rod (30); the positioning seat (32) is slidably connected to the inner side of the sleeve (31); the sponge plate (33) is rotatably connected to the outer side of the positioning seat (32); and the linear shaft (34) passes through the outer side of the positioning seat (32) and is fixedly connected to the inner surface of the sleeve (31).

7. The anesthetic gas inhalation prevention device for anesthesiologists in an operating room according to claim 6, characterized in that: A small motor (35) is also provided inside the positioning seat (32), and an output end of the small motor (35) is fixedly connected to the middle portion of one side of the sponge board (33).

8. The anesthetic gas inhalation prevention device for anesthesiologists in an operating room according to claim 4, characterized in that: The interior of the clamping plate (16) is also provided with a notch (36) matching the size of the circular frame (25).

9. The anesthetic gas inhalation prevention device for anesthesiologists in an operating room according to claim 4, characterized in that: The nanofiber filter papers (26) are provided in three groups, and the fiber densities of the three groups of nanofiber filter papers (26) increase in sequence.

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