A disposable material for absorbing carbon dioxide in general anesthesia and a method for using the same

Abstract

The present application relates to a kind of disposable general anesthesia with alkali liquefaction absorption carbon dioxide material and its using method, disposable general anesthesia with alkali liquefaction absorption carbon dioxide material is placed in the carbon dioxide absorption tank of anesthesia machine, including placement seat and the high water absorption material placed in the placement seat, the high water absorption material is adsorbed with liquefied CO2 absorbent, the bottom of the placement seat is provided with multiple ventilation holes.The present application can filter CO2 in exhaled gas, realize dust-free environment.

Description

Technical Field

[0001] This invention relates to the field of medical consumables technology, and in particular to a disposable alkali-liquefied carbon dioxide-absorbing material for general anesthesia and its application method. Background Technology

[0002] General anesthesia utilizes a closed or semi-closed respiratory cycle. The main components of the patient's exhaled air are carbon dioxide and fluorine-containing anesthetic gases. Currently, CO2 in the patient's exhaled air needs to be fully absorbed, while anesthetic gases are directly emitted. Domestically and internationally, the standard carbon dioxide absorption equipment for general anesthesia is a CO2 absorption tank, an essential component of closed-loop anesthesia machines. It utilizes soda lime (or barium lime) in the absorber to chemically react with CO2, thus removing CO2 from the exhaled air. There are two types of CO2 absorbents: soda lime and barium lime, with soda lime being more commonly used. Soda lime is composed of 5% NaOH or KOH and 95% Ca(OH)2, containing 15%–19% water and 0.2% silica for fusion. A particle size of 4–8 mesh is optimal, maximizing absorption area and minimizing airflow resistance. However, currently, domestically produced soda lime dust is still higher than imported high-end products, exhibiting issues such as easy pulverization and the need for sieving. Summary of the Invention

[0003] The purpose of this invention is to provide a disposable alkali-liquefied carbon dioxide absorption material for general anesthesia and its application method, which can solve the problem of high dust levels. It can be placed in a special absorption tank that is compatible with an anesthesia machine, thereby reducing medical costs and significantly reducing environmental pollution.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a disposable alkali-liquefied carbon dioxide absorbent material for general anesthesia, placed inside the carbon dioxide absorption tank of an anesthesia machine, comprising a placement seat and a highly absorbent material placed inside the placement seat, wherein the highly absorbent material adsorbs liquefied CO2 absorbent, and the bottom of the placement seat is provided with multiple ventilation holes.

[0005] Furthermore, a limiting post is provided around the vent.

[0006] Furthermore, the superabsorbent material is in columnar form.

[0007] Furthermore, the superabsorbent material is a degreased cotton roll, paper, superabsorbent resin, or sponge.

[0008] Furthermore, the diameter of the vent is smaller than the diameter of the highly absorbent material.

[0009] Furthermore, the spacing between the highly absorbent materials is 1.0-1.2cm, and the inclination of the highly absorbent materials is 0-45° in the vertical direction.

[0010] Furthermore, the cross-section of the limiting post is a concave arc triangle. The height of the limiting post... Furthermore, the placement base has multiple layers.

[0011] Furthermore, the side wall of the absorption tank is provided with a placement groove for placing the placement seat.

[0012] A method for using a disposable alkali-liquefied carbon dioxide absorption material for general anesthesia, characterized by the following steps: Step S1: The liquefied CO2 absorbent hydrates the highly absorbent material with alkali until it is saturated but no longer drips. Step S2: Place the alkali-wetted superabsorbent material in a certain order in the placement seat, and then place the placement seat in the carbon dioxide absorption canister of the anesthesia machine to filter out carbon dioxide from the exhaled air.

[0013] The beneficial effects of this invention are as follows: By improving the CO2 absorption material, a highly absorbent material with liquefied CO2 absorbent adsorbed is used in conjunction with the placement base. The carrier of the CO2 absorbent is innovatively replaced with a highly absorbent material placed inside the placement base, thus filtering CO2 from exhaled gas. 2， To achieve a dust-free environment, realize the transformation to domestic substitution, and achieve "leapfrog development"; and to improve to disposable materials, one material package per patient, to avoid cross-infection, reduce medical costs, and significantly reduce environmental pollution. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the placement seat in this invention; Figure 2 This is a partial structural diagram of the placement seat in this invention. Figure 3 This is a partial cross-sectional view of the placement seat inside the carbon dioxide absorption tank.

[0015] The components include: 1. Placement base, 2. Ventilation hole, 3. Limiting post, 4. Hollowed-out opening, 5. Carbon dioxide absorption tank, and 6. Small ventilation hole. Detailed Implementation

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Please see Figures 1 to 3This invention provides an embodiment: a disposable alkaline liquefaction carbon dioxide absorption material for general anesthesia, placed inside the carbon dioxide absorption tank 5 of an anesthesia machine, including a placement seat 1 and a highly absorbent material placed inside the placement seat 1. The highly absorbent material adsorbs a liquefied CO2 absorbent, and the bottom of the placement seat 1 is provided with multiple ventilation holes 2. This disposable alkaline liquefaction carbon dioxide absorption material for general anesthesia is applied in a closed or semi-closed circulatory breathing circuit under general anesthesia, and is used in a filter device to fully and rapidly absorb carbon dioxide (CO2) from the patient's exhaled air. The placement seat 1 is a three-dimensional mesh made of PP (polypropylene) material with a skeletal structure. The highly absorbent material inside the placement seat 1 can be arranged horizontally or vertically, with cotton swabs placed as follows: when vertically arranged, odd and even columns are aligned or staggered; when horizontally arranged, odd and even layers can be aligned or staggered. The liquefied CO2 absorbent is a sodium hydroxide solution, or a clear solution of sodium hydroxide and calcium hydroxide. The humidification degree of superabsorbent materials is 85%-90% water content, which is a saturated state with no dripping water. Water molecules fill the micropores to form a capillary network, which enhances the adsorption and interception of particles. Excessive moisture will cause water film blockage.

[0018] Please continue reading. Figure 1 , Figure 2 As shown, in one embodiment of the present invention, a limiting post 3 is provided around the vent 2. The limiting post 3 can limit the highly absorbent material, helping the highly absorbent material to be placed more effectively. Small ventilation holes 6 are also provided around the vent 2 to facilitate gas flow.

[0019] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the superabsorbent material is columnar. The diameter of the superabsorbent material can be 0.5-1.0 cm, and the length can be 2.5-4.0 cm.

[0020] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the superabsorbent material is a degreased cotton roll, paper, superabsorbent resin, or sponge.

[0021] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the diameter of the vent 2 is smaller than the diameter of the superabsorbent material. The superabsorbent material is positioned directly above the vent 2, corresponding to its location.

[0022] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the spacing between the highly absorbent materials is 1.0-1.2 cm, and the inclination of the highly absorbent materials is 0-45° in the vertical direction. The spacing of 1.0-1.2 cm ensures expansion space and prevents adhesion that could lead to localized blockage of the flow channels.

[0023] Please continue reading. Figure 2 As shown, in one embodiment of the present invention, the cross-section of the limiting post 3 is a concave arc triangle. The height of the limiting post 3 is 1-2 cm, and the slope of the limiting post 3 can be set according to the required slope of the highly absorbent material. The concave arc of the limiting post 3 fits relatively well with the surface of the columnar highly absorbent material, thus achieving better positioning.

[0024] Please continue reading. Figure 3 As shown, in one embodiment of the present invention, the placement seat 1 is provided with multiple layers. Preferably, the placement seat 1 can be provided with 3-5 layers. The placement seat 1 is provided with multiple layers within the carbon dioxide absorption tank 5. The placement of highly absorbent materials in the odd-numbered and even-numbered layers of the multiple placement seats 1 can also be staggered. The stagger between layers can be 30°-60°, that is, each layer rotates 30°-60° to break the symmetrical flow resistance and symmetrical flow field, prolonging particle retention time and increasing the probability of deep-layer capture. The height of the placement seat 1 is 3-4 cm, and the overall height of the multi-layer placement seat 1 is 12-16 cm. The sidewall of the placement seat 1 is provided with multiple hollow openings 4, which can also be irregular in shape and are not limited to a long strip.

[0025] Please continue reading. Figure 3 As shown, in one embodiment of the present invention, the side wall of the absorption tank 5 is provided with a placement groove for placing the placement seat 1. The placement groove is used to place the placement seat 1, so that there is a gap between the upper and lower placement seats 1. The placement groove can be provided with multiple placement grooves of different lengths, which can be used to place placement seats 1 of different layers, or they can be directly fitted by the bottom edge of the upper placement seat 1 and the top opening edge of the lower placement seat 1, so that the carbon dioxide absorption tanks 5 can be stacked.

[0026] Please see Figures 1 to 3 The present invention provides an embodiment: a method for using a disposable alkali-liquefied carbon dioxide absorption material for general anesthesia, characterized by comprising the following steps: Step S1: The liquefied CO2 absorbent hydrates the highly absorbent material to a saturated state without dripping water; the water content is 85%-90%, maintaining the open capillary channels.

[0027] Step S2: The alkali-wetted superabsorbent material is stacked in a specific order in the placement seat 1, and then the placement seat 1 is placed in the carbon dioxide absorption canister 5 of the anesthesia machine to filter the carbon dioxide in the exhaled air. The airflow velocity inside the anesthesia machine is set to ≤0.5m / s. At low speeds, particles are more easily adsorbed by fibers, while high speeds can easily cause penetration and turbulence loss.

[0028] The present invention has the following working principle: by improving the CO2 absorption material, a highly absorbent material with liquefied CO2 absorbent adsorbed is used in conjunction with the placement seat 1, and the carrier attached to the CO2 absorbent is innovatively changed to a highly absorbent material and placed in the placement seat 1 to filter CO2 in the exhaled gas and achieve a dust-free environment.

[0029] The above description is only a preferred embodiment of the present invention and should not be construed as a limitation of this application. All equivalent changes and modifications made in accordance with the scope of the patent application of the present invention should be covered by the present invention.

Claims

1. A disposable alkali-liquefied carbon dioxide absorption material for general anesthesia, characterized in that: The device is placed inside the carbon dioxide absorption canister of an anesthesia machine, including a placement seat and a highly absorbent material placed inside the placement seat. The highly absorbent material adsorbs liquefied CO2 absorbent, and the bottom of the placement seat is provided with multiple ventilation holes.

2. The disposable alkali-liquefied carbon dioxide absorption material for general anesthesia according to claim 1, characterized in that: A limiting post is provided around the vent.

3. The disposable alkali-liquefied carbon dioxide absorption material for general anesthesia according to claim 1, characterized in that: The superabsorbent material is in columnar form.

4. The disposable alkali-liquefied carbon dioxide absorption material for general anesthesia according to claim 1, characterized in that: The superabsorbent material is degreased cotton rolls, paper, superabsorbent resin, or sponge.

5. The disposable alkali-liquefied carbon dioxide absorption material for general anesthesia according to claim 3, characterized in that: The diameter of the vent is smaller than the diameter of the superabsorbent material.

6. The disposable alkali-liquefied carbon dioxide absorption material for general anesthesia according to claim 1, characterized in that: The spacing between the highly absorbent materials is 1.0-1.2cm, and the inclination of the highly absorbent materials is 0-45° in the vertical direction.

7. The disposable alkali-liquefied carbon dioxide absorption material for general anesthesia according to claim 2, characterized in that: The cross-section of the limiting post is a concave circular arc triangle.

8. The disposable alkali-liquefied carbon dioxide absorption material for general anesthesia according to claim 2, characterized in that: The placement base has multiple layers.

9. The disposable alkali-liquefied carbon dioxide absorption material for general anesthesia according to claim 2, characterized in that: The absorption tank has a placement slot on its side wall for placing the placement seat.

10. A method of using the alkali-liquefied carbon dioxide-absorbing material for disposable general anesthesia as described in claim 1, characterized in that: Includes the following steps: Step S1: The liquefied CO2 absorbent hydrates the highly absorbent material with alkali until it is saturated but no longer drips. Step S2: Place the alkali-wetted superabsorbent material in a certain order in the placement seat, and then place the placement seat in the carbon dioxide absorption canister of the anesthesia machine to filter out carbon dioxide from the exhaled air.

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