Carbon dioxide absorption device for general anesthesia and circulating respiration loop system thereof

Abstract

The invention belongs to the technical field of carbon dioxide absorption, and particularly relates to a carbon dioxide absorption device for general anesthesia and a circulating breathing loop system thereof.The carbon dioxide absorption device comprises a first-stage carbon dioxide absorption tank, the first-stage carbon dioxide absorption tank comprises two shell plates, the two shell plates are connected through a connecting ring, and one shell plate is fixedly connected with a first gas conveying pipe; a first gas conveying pipe opposite to the first gas conveying pipe is fixedly connected to one shell plate, a second gas conveying pipe opposite to the first gas conveying pipe is fixedly connected to the other shell plate, a plurality of movable tank bodies are installed between the two shell plates, each tank body is of a hollow structure with an upper opening and a lower opening, filter element materials soaked with sodium hydroxide are installed in the tank bodies, and sealing units are arranged between the shell plates and the tank bodies. The sealing unit comprises a sealing state and a moving state. The carbon dioxide absorption device can keep a good absorption effect on carbon dioxide for a long time by rapidly replacing the filter element material and sodium hydroxide, and the phenomenon of sodium hydroxide leakage in the using process is few.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of carbon dioxide absorption, and particularly relates to a carbon dioxide absorption device for general anesthesia and a circulation breathing circuit system thereof. BACKGROUND

[0002] General anesthesia surgery is a common surgical procedure, which usually requires the use of general anesthetic drugs to make the patient unconscious and maintain stable respiratory and circulatory functions during the operation. In general anesthesia surgery, the carbon dioxide absorption device and the circulation breathing circuit system are essential components, which are responsible for removing the carbon dioxide exhaled by the patient and maintaining the normal composition of respiratory gas to ensure the patency of the patient's airway and normal respiratory function.

[0003] However, the traditional carbon dioxide absorption device may encounter some problems during use. First, the filter core in the carbon dioxide absorption device will gradually fail over time and needs to be replaced regularly. The traditional replacement process may be cumbersome, requiring the operation to be stopped and a long maintenance time, resulting in a shorter single-use time of the carbon dioxide absorption device. SUMMARY

[0004] The purpose of the present application is to provide a carbon dioxide absorption device for general anesthesia and a circulation breathing circuit system thereof, which can maintain good absorption effect of carbon dioxide for a long time by quickly replacing the filter core material and sodium hydroxide, and the leakage of sodium hydroxide during use is less.

[0005] The technical solutions adopted by the present application are as follows:

[0006] A carbon dioxide absorption device for general anesthesia, comprising a primary carbon dioxide absorption tank, the primary carbon dioxide absorption tank comprising two shell plates, the two shell plates being connected by a connecting ring, the connecting ring and the two shell plates forming a sealed shell, the inside of the sealed shell being set as a vacuum;

[0007] One of the shell plates is fixedly connected with a first gas inlet pipe, and the other shell plate is fixedly connected with a second gas inlet pipe opposite to the first gas inlet pipe;

[0008] A plurality of movable tank bodies are installed between the two shell plates, the tank bodies being hollow structures with upper and lower openings, and the inside of the tank bodies being installed with filter core material soaked with sodium hydroxide;

[0009] A sealing unit is provided between the shell plates and the tank bodies, the sealing unit comprising a sealing state and a moving state, when the sealing unit is in the sealing state, the sealing unit fills and seals the gap between the shell plates and the tank bodies, and when the sealing unit is in the moving state, the sealing unit releases the sealing of the gap between the shell plates and the tank bodies.

[0010] Further, the filter core material is flannelette or wood chips, the flannelette is arranged in a stacked manner, and the flannelette is provided with air holes, and the wood chips have a particle size of 4-15 mesh.

[0011] Further, the sealing unit comprises a micro air pump and an inflatable sealing strip in communication with each other, the micro air pump is fixedly connected to the outside of the tank body, a first groove is formed in the end of the tank body, the inflatable sealing strip is fixedly connected to the inside of the first groove, a hollow air cavity is formed in the inside of the inflatable sealing strip, a plurality of second grooves are formed in the side surface of the shell plate close to the tank body, and the inner wall of the second grooves is provided with a concave-convex shaped portion.

[0012] Further, the shell plate is fixedly connected with a transmission motor, the output end of the transmission motor is fixedly connected with a multi-arm support between the two primary carbon dioxide absorption tanks, the plurality of tank bodies are arranged in a ring array around the shaft of the multi-arm support, and the plurality of tank bodies are fixedly connected with the multi-arm support.

[0013] Further, the filter core material is wood chips, a driving group is arranged in the inside of the tank body, a rotating rod is installed on the driving group, a spiral pushing piece is fixedly connected to the outside of the rotating rod, and a space for the flow of wood chips is arranged between the spiral pushing piece and the inner wall of the tank body.

[0014] A circulating respiration circuit system comprises a breathing machine and an inhalation branch pipe and an exhalation branch pipe connected with the breathing machine, and a Y-shaped joint is communicated at the end of the inhalation branch pipe and the exhalation branch pipe away from the breathing machine.

[0015] A fresh gas inlet is communicated on the inhalation branch pipe, an inhalation one-way valve is installed on the inhalation branch pipe between the fresh gas inlet and the Y-shaped joint, a waste gas discharge pipe is communicated on the exhalation branch pipe, an exhalation one-way valve is installed on the exhalation branch pipe between the Y-shaped joint and the waste gas discharge pipe, and a primary carbon dioxide absorption tank is installed on the exhalation branch pipe between the exhalation one-way valve and the waste gas discharge pipe.

[0016] The technical effects achieved by the present application are as follows:

[0017] (1) The carbon dioxide absorption device for general anesthesia and the circulating respiration circuit system thereof can absorb carbon dioxide through filter core material and sodium hydroxide, have good absorption effect on carbon dioxide, can maintain the continuous use of the carbon dioxide absorption device by switching the tank body, prolong the single use time of the carbon dioxide absorption device, and can reduce the leakage of sodium hydroxide through the gap by filling and sealing the gap between the shell plate and the tank body through the sealing unit. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1is a structural schematic diagram of a primary carbon dioxide absorption tank in Embodiment 2 of the present application;

[0019] Figure 2 is a structural exploded view of the present application;

[0020] Figure 3 is a sectional structural schematic diagram of an expansion sealing strip of the present application;

[0021] Figure 4 is a structural exploded view of the present application Figure 3 ;

[0022] Figure 5 is a sectional structural schematic diagram of a tank body of the present application;

[0023] Figure 6 is an enlarged side view of A in Embodiment 2 of the present application Figure 5 ;

[0024] Figure 7 is a structural schematic diagram of a circulation breathing circuit system in Embodiment 2 of the present application.

[0025] In the drawings, the components represented by each reference numeral are listed as follows:

[0026] 1. A primary carbon dioxide absorption tank; 2. A shell plate; 3. A connecting ring; 4. A first gas conveying pipe; 5. A second gas conveying pipe; 6. A transmission motor; 7. A multi-arm support; 8. A tank body; 9. A first groove; 10. An expansion sealing strip; 11. A micro air pump; 12. A second groove; 13. A concave-convex shaped portion; 14. A support body; 15. A rotating rod; 16. A spiral pushing blade; 17. A rubber wheel; 18. A gear set; 19. A small support; 20. An inhalation branch pipe; 21. An exhalation branch pipe; 22. A Y-shaped joint; 23. A breathing machine; 24. An inhalation one-way valve; 25. An exhalation one-way valve; 26. A fresh gas inlet; 27. A waste gas discharge pipe; 28. A secondary carbon dioxide absorption tank. DETAILED DESCRIPTION

[0027] In order to make the objects and advantages of the present application clearer, the present application is specifically described below in conjunction with embodiments. It should be understood that the following text is merely used to describe one or several specific implementation manners of the present application, and does not strictly limit the specific protection scope requested by the present application.

[0028] Embodiment 1:

[0029] As shown in Figures 1-7 , a carbon dioxide absorption device for general anesthesia includes a primary carbon dioxide absorption tank 1, the primary carbon dioxide absorption tank 1 includes two shell plates 2, the two shell plates 2 are connected through a connecting ring 3, the connecting ring 3 and the two shell plates 2 form a sealed shell body, and the inside of the sealed shell body is set in a vacuum.

[0030] A first gas supply pipe 4 is fixedly connected to one of the shell plates 2, and a second gas supply pipe 5, which is opposite to the first gas supply pipe 4, is fixedly connected to the other shell plate 2.

[0031] The core of this technical solution is that multiple movable tanks 8 are installed between the two shell plates 2. The tanks 8 are hollow structures with openings at the top and bottom. The inside of the tanks 8 is filled with filter material soaked in sodium hydroxide. When exhaled carbon dioxide enters the tank 8 through the second gas delivery pipe 5, it will be filtered by the filter material and neutralized by sodium hydroxide and carbon dioxide, thus achieving a good absorption effect on carbon dioxide.

[0032] As the ability of sodium hydroxide and filter material to neutralize carbon dioxide gradually decreases after long-term use, the filter material soaked in sodium hydroxide needs to be replaced. In order to extend the single use time of the carbon dioxide absorption device, this technical solution can quickly replace the tank 8 opposite to the first gas supply pipe 4 and the second gas supply pipe 5 by moving the tank 8, thus maintaining the continuous use of the carbon dioxide absorption device.

[0033] At this time, the tank 8 opposite to the first gas supply pipe 4 and the second gas supply pipe 5 can ensure the effectiveness of the carbon dioxide absorption device. The filter material inside the other tanks 8 can be replaced to increase the single use time of the carbon dioxide absorption device.

[0034] The filter material can be velvet or wood chips. The velvet is arranged in layers and has air pores. The wood chips have a particle size of 4 to 15 mesh.

[0035] like Figures 1-4 As shown, in order to reduce the gap between the tank body 8 and the shell plate 2, thereby reducing the leakage of sodium hydroxide inside the tank body 8 through the gap, this technical solution selects to set a sealing unit between the shell plate 2 and the tank body 8. The sealing unit includes a sealed state and a movable state. When the sealing unit is in the sealed state, the sealing unit fills and seals the gap between the shell plate 2 and the tank body 8. When the sealing unit is in the movable state, the sealing unit releases the seal on the gap between the shell plate 2 and the tank body 8.

[0036] At this time, when the tank body 8 is adjusted and displaced, the sealing unit is switched to the moving state to reduce the wear caused to the sealing unit when the tank body 8 moves. After the tank body 8 has moved, the sealing unit is switched to the sealing state so that the sealing unit fills and seals the gap between the shell plate 2 and the tank body 8, reducing the leakage of sodium hydroxide through the gap.

[0037] like Figures 1-3As shown, the sealing unit comprises a micro air pump 11 and an inflatable sealing strip 10 in communication with each other, the micro air pump 11 is fixedly connected to the outside of the tank body 8, the inflatable sealing strip 10 is installed at the end of the tank body 8 close to the shell plate 2, and a hollow air cavity is formed in the inside of the inflatable sealing strip 10. At this time, the air cavity of the inflatable sealing strip 10 is inflated by the micro air pump 11, so that the inflatable sealing strip 10 is inflated into a sealing state, and the gap between the shell plate 2 and the tank body 8 is sealed. When the tank body 8 moves, the air cavity of the inflatable sealing strip 10 is deflated by the micro air pump 11, so that the inflatable sealing strip 10 shrinks into a moving state, the inflatable sealing strip 10 and the shell plate 2 are separated, and the wear of the inflatable sealing strip 10 caused by the movement of the tank body 8 is reduced.

[0038] As shown in Figures 2-4 , the end of the tank body 8 is provided with a first groove 9, and the inflatable sealing strip 10 is fixedly connected in the inside of the first groove 9, and the fixed mode is preferably adhesion. The side surface of the shell plate 2 close to the tank body 8 is provided with a plurality of second grooves 12, and the lower part of the inflatable sealing strip 10 can extend into the inside of the second grooves 12 when the inflatable sealing strip 10 is inflated, thereby enhancing the sealing effect of the inflatable sealing strip 10.

[0039] At the same time, as shown in Figure 4 , the inner wall of the second groove 12 is provided with a concave-convex shaped part 13, and the cross section of the concave-convex shaped part 13 can be a wave line composed of a plurality of arcs, or a polyline composed of a plurality of line segments. At this time, when the inflatable sealing strip 10 is inflated, the shape of the concave-convex shaped part 13 can shape the side edge of the inflatable sealing strip 10 close to the concave-convex shaped part 13, thereby further enhancing the sealing effect of the inflatable sealing strip 10.

[0040] As shown in Figures 1-2 , the tank body 8 can be linearly and repeatedly moved, or can be rotated and moved, and in the technical solution, the rotation movement is preferred, and specifically, the transmission motor 6 is fixedly connected to the shell plate 2, the output end of the transmission motor 6 is fixedly connected with a multi-arm support 7 located between the two primary carbon dioxide absorption tanks 1, and the plurality of tank bodies 8 are arranged in a ring array around the axis of the multi-arm support 7, and the plurality of tank bodies 8 are fixedly connected with the multi-arm support 7. At this time, the multi-arm support 7 can drive the plurality of tank bodies 8 to rotate by starting the transmission motor 6, and the movement mode is relatively simple.

[0041] As shown in Figures 1-2 and Figure 5As shown, when the filter material is wood chips, in order to ensure the carbon dioxide absorption effect of the wood chips during long-term use, the inside of the tank body 8 is equipped with a driving group, a rotating rod 15 is installed on the driving group, a spiral pushing piece 16 is fixedly connected to the outside of the rotating rod 15, and a space for the flow of wood chips is arranged between the spiral pushing piece 16 and the inner wall of the tank body 8. When the driving group is started, the wood chips at the middle position of the tank body 8 will be pushed upward by the rotation of the spiral pushing piece 16, so that the wood chips at the middle position of the tank body 8 move upward. When the wood chips at the middle position of the tank body 8 move upward, the wood chips on the side of the spiral pushing piece 16 will move downward, so that the wood chips move inside the tank body 8, so that the wood chips are evenly contacted with carbon dioxide, thereby reducing the phenomenon that the wood chips are rapidly ineffective due to excessive contact of the lower wood chips with carbon dioxide, and cannot effectively absorb carbon dioxide.

[0042] As shown in the figure, Figures 5-6 The driving group includes a bracket body 14 fixedly connected to the inside of the tank body 8 and located on the upper side of the spiral pushing piece 16, the rotating rod 15 is rotatably connected to the bracket body 14, the bracket body 14 is fixedly connected with a small bracket 19 on the upper side, the small bracket 19 is rotatably connected with a rubber wheel 17, and the top of the rubber wheel 17 is in abutment with the shell plate 2. When the transmission motor 6 drives the tank body 8 to move, the rubber wheel 17 will move on the shell plate 2. At this time, the rubber wheel 17 will rotate when it moves, and the rubber wheel 17 and the rotating rod 15 are connected through a gear set 18. When the rubber wheel 17 rotates, the rotating rod 15 can be driven to rotate through the gear set 18, thereby providing the rotating rod 15 with rotational kinetic energy.

[0043] The working principle of the embodiment is: when the exhaled carbon dioxide enters the inside of the tank body 8 through the second gas conveying pipe 5, it is filtered through the filter material, and is neutralized by sodium hydroxide and carbon dioxide, and then is discharged through the first gas conveying pipe 4;

[0044] When the tank body 8 is used for a long time, the filter material and sodium hydroxide gradually lose effectiveness, and the first gas conveying pipe 4 and the second gas conveying pipe 5 are replaced with the tank body 8. When the tank body 8 is replaced, the transmission motor 6 is started to drive the tank body 8 to move, and at the same time, the air cavity of the expansion sealing strip 10 is deflated by the micro air pump 11 to separate the expansion sealing strip 10 from the shell plate 2, so as to reduce the abrasion of the expansion sealing strip 10 caused by the movement of the tank body 8. At this time, the sealing is ensured only by the cooperation of the shell plate 2 and the tank body 8. After the movement of the tank body 8 is completed, the air cavity of the expansion sealing strip 10 is inflated by the micro air pump 11, so that the expansion sealing strip 10 is inflated to a sealed state, and the gap between the shell plate 2 and the tank body 8 is sealed.

[0045] In summary, in the embodiment, carbon dioxide is absorbed by the filter material and sodium hydroxide, which has a good absorption effect on carbon dioxide, the continuous use of the carbon dioxide absorption device can be maintained by switching the tank 8, the single use time of the carbon dioxide absorption device is prolonged, and the leakage of sodium hydroxide through the gap can be reduced by filling and sealing the gap between the shell plate 2 and the tank 8 by the sealing unit.

[0046] Embodiment 2:

[0047] As shown in Figure 7 The embodiment discloses a circulating respiration circuit system based on the embodiment 1, the circulating respiration circuit system comprises a breathing machine 23 and an inhalation branch pipe 20 and an exhalation branch pipe 21 connected with the breathing machine 23, a Y-shaped joint 22 is communicated at the end away from the breathing machine 23 of the inhalation branch pipe 20 and the exhalation branch pipe 21, the Y-shaped joint 22 is used for being communicated with a lung pipeline, and the gas can flow between the inhalation branch pipe 20 and the exhalation branch pipe 21 through the control of the breathing machine 23;

[0048] The inhalation branch pipe 20 is communicated with a fresh gas inlet 26 for the entry of fresh gas, and then the fresh gas flows into the Y-shaped joint 22 through the inhalation branch pipe 20, at the same time, the inhalation branch pipe 20 is installed with an inhalation one-way valve 24 between the fresh gas inlet 26 and the Y-shaped joint 22, which is used for avoiding the reverse flow of the fresh gas, the exhalation branch pipe 21 is communicated with a waste gas discharge pipe 27 for discharging the carbon dioxide exhaled by the patient, the exhalation branch pipe 21 is installed with an exhalation one-way valve 25 between the Y-shaped joint 22 and the waste gas discharge pipe 27, which is used for avoiding the reverse flow of the carbon dioxide, and a first carbon dioxide absorption tank 1 is installed on the exhalation branch pipe 21 between the exhalation one-way valve 25 and the waste gas discharge pipe 27, which is used for absorbing the carbon dioxide, at the same time, a second carbon dioxide absorption tank 28 is installed on the exhalation branch pipe 21 between the first carbon dioxide absorption tank 1 and the waste gas discharge pipe 27, so that the carbon dioxide can be absorbed through the cooperation of the first carbon dioxide absorption tank 1 and the second carbon dioxide absorption tank 28.

[0049] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A carbon dioxide absorption device for general anesthesia, comprising a primary carbon dioxide absorption tank (1), characterized in that: The primary carbon dioxide absorption tank (1) comprises two shell plates (2), the two shell plates (2) are connected through a connecting ring (3), the connecting ring (3) and the two shell plates (2) form a sealed shell, and the inside of the sealed shell is provided with a vacuum; One of the shell plates (2) is fixedly connected with a first gas conveying pipe (4), and the other shell plate (2) is fixedly connected with a second gas conveying pipe (5) opposite to the first gas conveying pipe (4); A plurality of movable tank bodies (8) are installed between the two shell plates (2), the tank body (8) is a hollow structure with an upper opening and a lower opening, and a filter core material soaked with sodium hydroxide is installed in the inside of the tank body (8); A sealing unit is arranged between the shell plate (2) and the tank body (8), the sealing unit comprises a sealing state and a moving state, when the sealing unit is in the sealing state, the sealing unit fills and seals the gap between the shell plate (2) and the tank body (8), and when the sealing unit is in the moving state, the sealing unit releases the sealing of the gap between the shell plate (2) and the tank body (8).

2. A carbon dioxide absorption device for general anesthesia according to claim 1, characterized in that: The filter core material is flannelette or wood chips, the flannelette is arranged in a stacked manner, the flannelette is provided with air holes, and the particle size of the wood chips is 4-15 mesh.

3. A carbon dioxide absorption device for general anesthesia according to claim 1, characterized in that: The sealing unit comprises a micro air pump (11) and an inflatable sealing strip (10) in communication with each other, the micro air pump (11) is fixedly connected to the outside of the tank body (8), a first groove (9) is formed in the end of the tank body (8), the inflatable sealing strip (10) is fixedly connected to the inside of the first groove (9), and a hollow air cavity is formed in the inside of the inflatable sealing strip (10).

4. A carbon dioxide absorption device for general anesthesia according to claim 3, characterized in that: A plurality of second grooves (12) are formed in the side of the shell plate (2) close to the tank body (8), and a concave-convex shaped portion (13) is arranged on the inner wall of the second groove (12).

5. A carbon dioxide absorption device for general anesthesia according to claim 1, characterized in that: The shell plate (2) is fixedly connected with a transmission motor (6), the output end of the transmission motor (6) is fixedly connected with a multi-arm support (7) between the two primary carbon dioxide absorption tanks (1), the plurality of tank bodies (8) are arranged in a ring array around the axis of the multi-arm support (7), and the plurality of tank bodies (8) are fixedly connected with the multi-arm support (7).

6. A carbon dioxide absorption device for general anesthesia according to claim 5, characterized in that: The filter core material is wood chips, a driving group is arranged in the inside of the tank body (8), a rotating rod (15) is installed on the driving group, a spiral pushing piece (16) is fixedly connected to the outside of the rotating rod (15), and a space for the wood chips to flow is arranged between the spiral pushing piece (16) and the inner wall of the tank body (8).

7. A carbon dioxide absorption device for general anesthesia according to claim 6, characterized in that: The driving group comprises a support body (14) fixedly connected to the inside of the tank body (8) and located on the upper side of the spiral pushing piece (16), the rotating rod (15) is rotatably connected to the support body (14), a small support (19) is fixedly connected to the upper side of the support body (14), a rubber wheel (17) is rotatably connected to the small support (19), the top of the rubber wheel (17) abuts against the shell plate (2), and the rubber wheel (17) and the rotating rod (15) are connected through a gear set (18).

8. A rebreathing circuit system employing a primary carbon dioxide absorption canister (1) according to any one of claims 1-7, characterized by: The circulation breathing circuit system comprises a breathing machine (23) and an inhalation branch pipe (20) and an exhalation branch pipe (21) communicated with the breathing machine (23), and a Y-shaped joint (22) is communicated with the ends of the inhalation branch pipe (20) and the exhalation branch pipe (21) away from the breathing machine (23); A fresh gas inlet (26) is communicated with the inhalation branch pipe (20), an inhalation one-way valve (24) is installed on the inhalation branch pipe (20) and between the fresh gas inlet (26) and the Y-shaped joint (22), an exhaust gas discharge pipe (27) is communicated with the exhalation branch pipe (21), an exhalation one-way valve (25) is installed on the exhalation branch pipe (21) and between the Y-shaped joint (22) and the exhaust gas discharge pipe (27), and a first carbon dioxide absorption tank (1) is installed on the exhalation branch pipe (21) and between the exhalation one-way valve (25) and the exhaust gas discharge pipe (27).

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