Anesthesia waste gas extractor

Abstract

The present application relates to the technical field of medical equipment, and specifically discloses a kind of anesthesia exhaust gas extraction machine, comprising: tank, air suction pipe and exhaust pipe, still comprising: first detection mechanism, first detection mechanism detects the airflow in air suction pipe;First adjusting mechanism, first adjusting mechanism selectively extracts exhaust gas in exhaust pipe according to airflow change;Second detection mechanism, second detection mechanism detects the amount of exhalation of patient;Second adjusting mechanism, second adjusting mechanism adjusts the size of negative pressure in tank;Control module, control adjusting mechanism action, first, first detection mechanism and first adjusting mechanism can when patient inhales first adjusting mechanism can transfer negative pressure to atmospheric pressure instead of acting on exhaust pipe, so that it can be guaranteed that there is no negative pressure generated in exhaust pipe when patient inhales, in addition, second detection mechanism and second adjusting mechanism can automatically adjust the size of negative pressure according to the amount of exhalation of patient, more convenient when using.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an anesthetic waste gas extraction machine. Background Technology

[0002] Anesthesia waste gas is the waste gas containing trace amounts of anesthetic gas that patients exhale during surgery after inhaling anesthetic gases through the respiratory tract. Among volatile anesthetics, N2O and fluorine-containing gases (sevoflurane, desflurane, and isoflurane) are the most widely used. Volatile anesthetics are hardly metabolized in the body, and most of them are exhaled.

[0003] Because anesthesia is performed in a semi-closed or semi-open system, users and staff will inhale residual anesthetic gas that passes through the pressure relief valve of the circulation system. This can cause symptoms such as headache, dizziness, fatigue, and irritability, as well as certain health risks such as liver disease, kidney disease, neurological diseases, cancer, miscarriage, or congenital malformations.

[0004] Based on the above, some hospitals use an anesthetic exhaust gas system (AGSS) to remove anesthetic exhaust gas from the operating room. Its working principle is mainly to use the negative pressure generated by the central negative pressure pump to connect with the extraction device. At the same time, the extraction device is connected to the exhaust port of the anesthesia machine. The exhaust gas discharged from the anesthesia machine is extracted and treated by the extraction device before being discharged.

[0005] However, since central negative pressure equipment generally operates continuously, while anesthetic waste gas is only discharged when the patient exhales, the negative pressure equipment is still working even when the patient is inhaling normally. The negative pressure generated by the equipment can affect the patient's normal breathing, easily leading to symptoms of hypoxia. In addition, the pressure of the negative pressure equipment is generally high, and the discharge of anesthetic waste gas is affected by factors such as the patient's respiratory rate and respiratory volume. The regulating valve on the extraction device needs to be adjusted for each patient, which is quite troublesome.

[0006] Therefore, we propose an anesthetic waste gas extraction machine. Summary of the Invention

[0007] The purpose of this invention is to provide an anesthetic waste gas extraction machine to solve the problems mentioned in the background art, such as the existing anesthetic waste gas treatment process easily affecting the patient's normal breathing and the need to adjust the negative pressure according to each patient's condition, which makes the operation inconvenient.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an anesthetic waste gas extraction machine, comprising: a tank, an inhalation pipe, and an exhaust pipe, wherein both the inhalation pipe and the exhaust pipe are installed on the tank, the inhalation pipe is connected to a negative pressure device, and the exhaust pipe is connected to the waste gas outlet of the anesthesia machine; further comprising:

[0009] The first detection mechanism is installed at the end of the exhaust pipe and detects the airflow in the intake pipe.

[0010] The first regulating mechanism is installed on the exhaust pipe and selectively extracts exhaust gas from the exhaust pipe according to changes in airflow.

[0011] The second testing unit, installed on the exhaust pipe, measures the patient's expiratory volume.

[0012] The second regulating mechanism is installed on the tank body and regulates the magnitude of the negative pressure inside the tank.

[0013] The control module is fixed on the tank body. The control module receives signals from the first detection mechanism and the second detection mechanism and controls the first adjustment mechanism and the second adjustment mechanism to operate.

[0014] The first testing device is an airflow sensor.

[0015] The first regulating mechanism includes a first branch pipe, a first solenoid valve, and a second solenoid valve. The first solenoid valve is installed on the exhaust pipe, the first branch pipe is installed on the exhaust pipe and connected to the exhaust pipe, and the second solenoid valve is installed on the branch pipe. The first and second solenoid valves are electrically connected to the control module.

[0016] The first adjustment mechanism includes a second branch pipe, a sealing cavity, a plug plate, a rack, a gear, and a motor. The second branch pipe is installed on the exhaust pipe and is connected to and perpendicular to the exhaust pipe. The sealing cavity is installed on the exhaust pipe and the second branch pipe respectively. The plug plate is slidably installed in the sealing cavity. The gear meshes with the rack on the second branch pipe and the exhaust pipe. The motor is fixed on the tank body and its output end is fixed to the gear. The motor is electrically connected to the control module.

[0017] The second detection mechanism includes an airbag, a pressure plate, a distance sensor, a mounting plate, and an electromagnet. The pressure plate is fixed on the tank body, the airbag is installed on the exhaust pipe, the pressure plate is set on both sides of the airbag and is slidably connected to the mounting plate, the distance sensor is fixed on the mounting plate, and the electromagnet is fixedly installed on the pressure plate. The electromagnet and the distance sensor are electrically connected to the control module.

[0018] The pressure plate has a connecting rod fixed to its bottom, and a movable plate is fixed to the bottom of the connecting rod. Both sides of the movable plate have through holes. A sliding rod is fixed to the mounting plate. The pressure plate is connected to the movable plate through the connecting rod. The movable plate is slidably mounted on the sliding rod through the through holes. The electromagnet is fixed to the bottom of the movable plate.

[0019] The second adjustment mechanism includes a sliding rheostat and a telescopic rod. The sliding rheostat is fixedly installed on the tank body, one end of the telescopic rod is fixed to the slider of the sliding rheostat, and the other end of the telescopic rod is fixed to the tank body. The sliding rheostat is electrically connected to the negative pressure equipment, and the telescopic rod is electrically connected to the control module.

[0020] The tank contains a uniformly distributed plate, an activated carbon adsorption layer, and an absorption tank. The uniformly distributed plate, the activated carbon adsorption layer, and the absorption tank are arranged sequentially from top to bottom along the length of the tank. The upper end face of the absorption tank is uniformly provided with multiple perforations and a vent hole.

[0021] The tank body contains an inner tank, and the side of the tank body is equipped with a mounting bracket for fixing it to the guide rail of the anesthesia machine.

[0022] The present invention has at least the following beneficial effects:

[0023] Firstly, the first detection mechanism can detect the gas flow rate at the anesthesia machine's exhaust port. The first adjustment mechanism can selectively generate negative pressure in the exhaust pipe based on changes in gas flow rate. That is, when the patient inhales, the first adjustment mechanism can transfer the negative pressure to atmospheric pressure instead of acting on the exhaust pipe. Therefore, it can ensure that no negative pressure is generated in the exhaust pipe when the patient inhales, thus avoiding the impact of continuous negative pressure from the negative pressure device on the patient's breathing. In addition, the second detection mechanism can detect the patient's expiratory volume. The second adjustment mechanism can automatically adjust the negative pressure according to the size of the patient's expiratory volume, making it more convenient to use. Furthermore, the negative pressure matched to the expiratory volume can reduce the possibility of anesthetic waste gas remaining in the exhaust pipe, effectively preventing the remaining waste gas from leaking into the operating room from the exhaust pipe joint. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall first-view structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall second-view structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the top structure of the tank body of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the second embodiment of the first adjusting mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the second detection mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the pressure plate structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the second adjustment mechanism of the present invention;

[0032] Figure 9 This is a schematic cross-sectional view of the absorption tank of the present invention.

[0033] In the diagram: 1. Tank body; 2. Intake pipe; 3. Exhaust pipe; 4. First detection mechanism; 5. First adjustment mechanism; 6. Second detection mechanism; 7. Second adjustment mechanism; 8. Control module; 9. First branch pipe; 10. First solenoid valve; 11. Second solenoid valve; 12. Second branch pipe; 13. Sealing cavity; 14. Blocking plate; 15. Rack; 16. Gear; 17. Motor; 18. Airbag; 19. Pressure plate; 20. Distance sensor; 21. Mounting plate; 22. Electromagnet; 23. Connecting rod; 24. Movable plate; 25. Through hole; 26. Sliding rod; 27. Sliding rheostat; 28. Telescopic rod; 29. ​​Distributed plate; 30. Activated carbon adsorption layer; 31. Absorption tank; 32. Vent hole; 33. Inner tank; 34. Perforation; 35. Mounting base. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figure 1-9 The present invention provides a technical solution: an anesthetic waste gas extraction machine, including a tank 1, with an exhaust pipe 3 and an inhalation pipe 2 installed at the upper and lower ends of the tank 1, respectively. The exhaust pipe 3 is connected to the waste gas outlet of the anesthesia machine, while the inhalation pipe 2 is connected to a central negative pressure device.

[0036] Through the above technical solution, the exhaust gas discharged from the anesthesia machine enters the tank 1 through the exhaust pipe 3, and after passing through the tank 1, the exhaust gas is drawn in by the suction pipe 2.

[0037] Meanwhile, an inner tank 33 is fixed inside the tank body 1. The inner tank 33 is a waste gas treatment tank, while the outer tank body 1 is a protective tank that is detachably connected to the inner tank 33. On the outer wall of the tank body 1, there is a mounting base 35 that is fixed to the anesthesia machine guide rail.

[0038] With the above technical solution, most anesthesia machines on the market come with guide rails, and the tank 1 can be installed and fixed to the guide rail of the anesthesia machine through the mounting base 35, which improves the compatibility of the tank 1 installation. For a very small number of models that do not come with guide rails, they can be installed by changing the structure, without drilling holes in the anesthesia machine, thereby avoiding damage to the anesthesia machine during installation.

[0039] Inside the inner tank 33, a uniformly distributed plate 29, an activated carbon adsorption layer 30, and an absorption tank 31 are installed sequentially from top to bottom. The upper end face of the absorption tank 31 has multiple perforations 34 and a vent hole 32, wherein the vent hole 32 completely penetrates the absorption tank 31.

[0040] Through the above technical solution, the anesthetic waste gas entering the inner tank 33 from the exhaust pipe 3 is first evenly distributed by the distribution plate 29. After distribution, the anesthetic waste gas is adsorbed and purified by the activated carbon filter layer. After purification, it is discharged through the suction pipe 2. Since the main components of the anesthetic waste gas are fluorine-containing gas and nitrous oxide, the activated carbon adsorption layer 30 can only adsorb fluorine-containing gas and cannot treat nitrous oxide. Therefore, a solvent that can dissolve nitrous oxide, such as alcohol or water, can be placed in the absorption tank 31. At this time, the nitrous oxide in the waste gas needs to flow through the absorption tank 31 under the action of negative pressure and enter the solvent through the perforation 34 on the absorption tank 31 and be absorbed by the solvent. At the same time, a small part of nitrous oxide is discharged from the suction pipe 2 through the vent 32. However, this can greatly reduce the nitrous oxide content in the waste gas and reduce environmental pollution.

[0041] A first detection mechanism 4 is installed at the end of the exhaust pipe 3. The first detection mechanism 4 can detect the gas at the exhaust outlet of the anesthesia machine. Specifically, the first detection mechanism 4 is an airflow sensor. When there is gas exhaled by the patient after the anesthesia exhaust, the airflow sensor will detect the airflow. When the patient is inhaling, there is no gas coming out of the exhaust outlet, and the airflow sensor cannot detect the airflow signal.

[0042] A first adjustment mechanism 5 is also installed on the exhaust pipe 3. The first adjustment mechanism 5 can selectively draw air into the exhaust pipe 3 according to the signal of the first detection mechanism 4. That is, there is negative pressure in the exhaust pipe 3 when the patient exhales, but no negative pressure is generated in the exhaust pipe 3 when the patient inhales, so as not to affect the patient's normal inhalation.

[0043] The first regulating mechanism 5 includes a first branch pipe 9, a first solenoid valve 10, and a second solenoid valve 11. The first branch pipe 9 is installed on the exhaust pipe 3 and is connected to the exhaust pipe 3. The first solenoid valve 10 is installed on the exhaust pipe 3, and the second solenoid valve 11 is installed on the first branch pipe 9. A control module 8 is fixed on the outer wall of the tank body 1. The control module 8 can receive the signal from the airflow sensor and control the action of the first regulating mechanism 5 through the signal information.

[0044] Through the above technical solution, the airflow sensor detects the airflow at the exhaust port of the anesthesia machine. When the patient exhales, the exhaled gas enters the exhaust port of the anesthesia machine, and the airflow sensor detects the airflow and transmits the detection signal to the control module 8. The control module 8 controls the first solenoid valve 10 to open and the second solenoid valve 11 to close. At this time, the entire exhaust pipe 3 is in a connected state, and the negative pressure will normally enter through the exhaust pipe 3, and the exhaust gas can be normally drawn out by the inhalation pipe 2. When the patient inhales, the exhaust port of the anesthesia machine will not discharge gas, and the airflow sensor will not detect the airflow. At this time, the control module 8 controls the first solenoid valve 10 to close and the second solenoid valve 11 to open. At this time, the negative pressure will draw in the external atmospheric pressure through the first branch pipe 9 and will not generate a negative pressure effect in the exhaust pipe 3, thus avoiding the influence of negative pressure on the patient when inhaling.

[0045] It should be added that leaks are most likely to occur at the patient's mouth and nose and at the connection points of the tubes during the operation. Therefore, the end of the second branch pipe 12 can be placed in the areas prone to leakage, thereby also purifying the key areas and improving the thoroughness of exhaust gas treatment.

[0046] In summary, the first detection mechanism 4 can detect the gas flow rate at the exhaust port of the anesthesia machine, and the first adjustment mechanism 5 can selectively generate negative pressure on the exhaust pipe 3 according to the change in gas flow rate. That is, when the patient inhales, the first adjustment mechanism 5 can transfer the negative pressure to atmospheric pressure instead of acting on the exhaust pipe 3. Therefore, it can ensure that no negative pressure is generated in the exhaust pipe 3 when the patient inhales, thereby avoiding the continuous negative pressure of the negative pressure device from affecting the patient's breathing.

[0047] Regarding the second embodiment of the first adjustment mechanism 5, in this embodiment the first adjustment mechanism 5 includes a second branch pipe 12, a sealing cavity 13, a blocking plate 14, a rack 15, a gear 16 and a motor 17. The second branch pipe 12 is installed on the exhaust pipe 3, and the second branch pipe 12 and the exhaust pipe 3 are interconnected and perpendicular to each other. The sealing cavity 13 is installed on the exhaust pipe 3 and the second branch pipe 12 respectively. The blocking plate 14 is slidably installed in the sealing cavity 13. The gear 16 meshes with the rack 15 on the second branch pipe 12 and the exhaust pipe 3. The motor 17 is fixed on the tank body 1 and its output end is fixed with the gear 16. The motor 17 is electrically connected to the control module 8.

[0048] With the above technical solution, when the airflow sensor detects airflow, the control module 8 controls the motor 17 to rotate forward. At this time, the blocking plate 14 on the exhaust pipe 3 separates from the mounting cavity, so that the exhaust pipe 3 forms a passage to extract the exhaust gas. At the same time, the blocking plate 14 on the second branch pipe 12 will block the opening of the mounting cavity, so that the second branch pipe 12 forms an open circuit. Conversely, the second branch pipe 12 forms a passage, and the exhaust pipe 3 forms an open circuit.

[0049] It should be noted that, in the first embodiment of the first regulating mechanism 5, the solenoid valve has high precision and fast response. However, since the patient's exhaled air contains a lot of moisture during suction, the solenoid valve is easily affected by the humidity of the medium and is prone to damage. In the second embodiment of the first regulating mechanism 5, the structure is relatively simple and less affected by the medium. The disadvantage is that the sealing is not as reliable as in the first embodiment. Users can choose the appropriate embodiment according to their own needs.

[0050] A second detection mechanism 6 is also installed on the exhaust pipe 3. The second detection mechanism 6 mainly detects the patient's exhalation volume. Specifically, the second detection mechanism 6 includes a mounting plate 21, which is fixed to the tank body 1. An airbag 18 is installed on the mounting plate 21 and is connected to the exhaust pipe 3. Pressure plates 19 are installed on both sides of the airbag 18. A connecting rod 23 is fixed to the bottom of each pressure plate 19, and a movable plate 24 is fixed to the bottom of the connecting rod 23. Both ends of 24 are provided with through holes 25. At the same time, a sliding rod 26 is fixed on the mounting plate 21. The sliding rod 26 is located inside the through hole 25. Therefore, the pressure plate 19 is connected and fixed to the bottom movable plate 24 through the connecting rod 23. The movable plate 24 slides on the sliding rod 26 through the through hole 25. An electromagnet 22 is fixed at the bottom of the movable plate 24. A distance sensor 20 is fixed on the side of the mounting plate 21. Both the distance sensor 20 and the electromagnet 22 are connected to the control module 8.

[0051] With the above technical solution, when the patient exhales, the exhaled air enters the airbag 18, causing the airbag 18 to inflate. When the airbag 18 inflates, it pushes the pressure plates 19 on both sides to slide. Therefore, the greater the patient's exhalation volume, the greater the degree of inflation of the airbag 18, and the greater the distance the pressure plates 19 move. Thus, the position change of the pressure plates 19 can indirectly reflect the patient's exhalation volume. When the airbag 18 inflates to its limit, the pressure plates 19 stop moving. At this time, the distance sensor 20 detects the position information of the pressure plates 19 and transmits it to the control module 8. The control module 8 controls the electromagnet 22 to be energized, so that the adjusted pressure plates 19 are fixed on the mounting plate 21. At the same time, the second adjustment mechanism 7 is controlled to operate according to the position signal of the pressure plates 19.

[0052] The second adjustment mechanism 7 consists of a sliding rheostat 27 and a telescopic rod 28. The sliding rheostat 27 is connected to the central negative pressure device, and the resistance of the sliding rheostat 27 is the resistance of the central negative pressure device. The telescopic rod 28 is an electric push rod. One end of the electric push rod is fixed to the slider on the sliding rheostat 27, and the other end is fixed to the tank 1. The electric push rod is also electrically connected to the control module 8.

[0053] Through the above technical solution, after the distance sensor 20 detects the signal, the control module 8 controls the telescopic rod 28 to extend and retract. The telescopic rod 28 adjusts the resistance of the sliding rheostat 27. When the resistance of the central negative pressure device changes, its negative pressure will also be adjusted accordingly. Thus, when the exhalation volume is large, the negative pressure can be adjusted to a larger value, and when the exhalation volume is small, the negative pressure can be adjusted to a smaller value.

[0054] In summary, the negative pressure adjustment can be automatically adjusted according to the different patients' conditions without the need for manual adjustment by medical staff, making it more convenient to use. Furthermore, the negative pressure that matches the exhalation volume can reduce the possibility of anesthetic waste gas remaining in the exhaust pipe 3, thus preventing the remaining waste gas from leaking into the operating room from the exhaust pipe 3 connector.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anesthetic waste gas extraction machine, comprising: The device comprises a tank (1), an inhalation pipe (2), and an exhaust pipe (3), wherein the inhalation pipe (2) and the exhaust pipe (3) are both installed on the tank (1), the inhalation pipe (2) is connected to a negative pressure device, and the exhaust pipe (3) is connected to the exhaust outlet of the anesthesia machine; characterized in that it further comprises: The first detection mechanism (4) is installed at the end of the exhaust pipe (3) and detects the airflow in the intake pipe (2); The first regulating mechanism (5) is installed on the exhaust pipe (3) and selectively extracts exhaust gas from the exhaust pipe (3) according to the airflow change. The second detection unit (6) is installed on the exhaust pipe (3) and detects the patient's exhalation volume; The second regulating mechanism (7) is installed on the tank (1) and regulates the magnitude of the negative pressure inside the tank (1). The control module (8) is fixed on the tank body (1). The control module (8) receives signals from the first detection mechanism (4) and the second detection mechanism (6) and controls the first adjustment mechanism (5) and the second adjustment mechanism (7) to operate.

2. The anesthetic waste gas extraction machine according to claim 1, characterized in that: The first detection mechanism (4) is an airflow sensor.

3. The anesthetic waste gas extraction machine according to claim 2, characterized in that: The first regulating mechanism (5) includes a first branch pipe (9), a first solenoid valve (10), and a second solenoid valve (11). The first solenoid valve (10) is installed on the exhaust pipe (3), the first branch pipe (9) is installed on the exhaust pipe (3) and connected to the exhaust pipe (3), and the second solenoid valve (11) is installed on the branch pipe. The first solenoid valve (10) and the second solenoid valve (11) are electrically connected to the control module (8).

4. The anesthetic waste gas extraction machine according to claim 2, characterized in that: The first adjustment mechanism (5) includes a second branch pipe (12), a sealing cavity (13), a blocking plate (14), a rack (15), a gear (16), and a motor (17). The second branch pipe (12) is installed on the exhaust pipe (3). The second branch pipe (12) and the exhaust pipe (3) are interconnected and perpendicular to each other. The sealing cavity (13) is installed on the exhaust pipe (3) and the second branch pipe (12) respectively. The blocking plate (14) is slidably installed in the sealing cavity (13). The gear (16) meshes with the rack (15) on the second branch pipe (12) and the exhaust pipe (3). The motor (17) is fixed on the tank body (1) and its output end is fixed to the gear (16). The motor (17) is electrically connected to the control module (8).

5. The anesthetic waste gas extraction machine according to claim 3 or 4, characterized in that: The second detection mechanism (6) includes an airbag (18), a pressure plate (19), a distance sensor (20), a mounting plate (21), and an electromagnet (22). The pressure plate (19) is fixed on the tank (1). The airbag (18) is mounted on the exhaust pipe (3). The pressure plate (19) is located on both sides of the airbag (18) and is slidably connected to the mounting plate (21). The distance sensor (20) is fixed on the mounting plate (21). The electromagnet (22) is fixedly mounted on the pressure plate (19). The electromagnet (22) and the distance sensor (20) are electrically connected to the control module (8).

6. The anesthetic waste gas extraction machine according to claim 5, characterized in that: A connecting rod (23) is fixed to the bottom of the pressure plate (19), and a movable plate (24) is fixed to the bottom of the connecting rod (23). Through holes (25) are provided on both sides of the movable plate (24). A sliding rod (26) is fixed on the mounting plate (21). The pressure plate (19) is connected to the movable plate (24) through the connecting rod (23). The movable plate (24) is slidably mounted on the sliding rod (26) through the through holes (25). The electromagnet (22) is fixed to the bottom of the movable plate (24).

7. The anesthetic waste gas extraction machine according to claim 5, characterized in that: The second adjustment mechanism (7) includes a sliding rheostat (27) and a telescopic rod (28). The sliding rheostat (27) is fixedly installed on the tank (1). One end of the telescopic rod (28) is fixed on the slider of the sliding rheostat (27), and the other end of the telescopic rod (28) is fixed on the tank (1). The sliding rheostat (27) is electrically connected to the negative pressure equipment, and the telescopic rod (28) is electrically connected to the control module (8).

8. The anesthetic waste gas extraction machine according to claim 1, characterized in that: The tank (1) is fixed with a uniformly distributed plate (29), an activated carbon adsorption layer (30) and an absorption tank (31). The uniformly distributed plate (29), the activated carbon adsorption layer (30) and the absorption tank (31) are arranged from top to bottom along the length of the tank (1). The upper end face of the absorption tank (31) is uniformly provided with multiple perforations (34) and a vent hole (32).

9. The anesthetic waste gas extraction machine according to claim 8, characterized in that: The tank (1) has an inner tank (33) installed inside, and a mounting seat (35) for fixing to the anesthesia machine guide rail is installed on the side of the tank (1).

Images