A novel carbon dioxide absorber
By designing a top air inlet and outlet in the carbon dioxide absorber and setting up a multi-layer filtration structure inside the tank, the problems of inconvenient operation and high cost in the existing technology are solved, achieving the effect of simplified operation and reduced cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN KOPAL TECH MEDICAL CO LTD
- Filing Date
- 2025-03-19
- Publication Date
- 2026-08-04
AI Technical Summary
The inlet and outlet positions of existing carbon dioxide absorbers are inconvenient to connect, resulting in troublesome operation, complex structure, inconvenient assembly, and high cost.
The transparent tank is designed with an air inlet and an air outlet at the top, and a carbon dioxide absorption chamber is set inside the tank, which includes a first filter cotton layer, a carbon dioxide absorbent layer and a second filter cotton layer. The absorbent layer is filled with a color-changing indicator made of calcium lime and ethyl violet, and the filter cotton layer is a mesh sponge.
It enables patients to obtain clean breathing gases, simplifies operation, reduces manufacturing costs, is easy to assemble, and reduces the use of anesthetics and environmental impact.
Smart Images

Figure CN224585162U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of carbon dioxide absorption equipment, and in particular to a novel carbon dioxide absorber. Background Technology
[0002] With the continuous development of science and technology, the types of medical devices are also increasing, including carbon dioxide absorbers. These absorbers are used to absorb carbon dioxide expelled from inhalation anesthesia devices equipped with a rebreathing system. The principle is that the carbon dioxide absorbent reacts chemically with the carbon dioxide, thereby achieving absorption. When using a carbon dioxide absorber to absorb exhaled gas from the anesthesia machine's breathing circuit, the exhaled gas enters the absorber through the gas inlet tube, and the absorbed gas returns to the anesthesia machine's breathing circuit through the gas outlet tube.
[0003] A search revealed that Chinese utility model patent CN202320528245.6 discloses a carbon dioxide absorber, including a shell. An exhaust port is fixedly installed on the top of the shell, and a flow distribution chamber is fixedly installed on the bottom. This utility model achieves uniform carbon dioxide distribution by incorporating a first guide plate, a second guide plate, and a first separation plate. The first and second guide plates guide the flue gas, which is then evenly discharged into the interior of the shell through the first and second air inlets. This ensures that the carbon dioxide flue gas enters and fills the interior of the shell evenly. The absorption plate filters the carbon dioxide in the flue gas, and the filtered flue gas is discharged through the exhaust port. This ensures that the flue gas entering the shell is evenly distributed within the shell and passes evenly through the absorption plate, resulting in better carbon dioxide filtration and achieving uniform carbon dioxide distribution.
[0004] However, the existing carbon dioxide absorber has its air inlet located on the side of the casing and its exhaust port located on the top of the casing. This results in a large distance between the air inlet and the exhaust port, making it inconvenient to insert the pipes and cumbersome to operate. Furthermore, its structure is relatively complex, making it difficult to assemble and resulting in high manufacturing costs. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a novel carbon dioxide absorber that addresses the above-mentioned deficiencies of the prior art. When in use, it is connected to a ventilator and anesthesia machine through the air inlet and air outlet respectively, which can ensure that the patient receives clean breathing gas, help the patient effectively expel excess carbon dioxide from the body, maintain airway patency and oxygen supply, and the air inlet and air outlet are both located at the top of the transparent canister, making it more convenient to use. The overall structure is relatively simple, easy to assemble, and has a low manufacturing cost.
[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0007] A novel carbon dioxide absorber includes a transparent canister with an air inlet and an air outlet on the top side. The transparent canister contains a carbon dioxide absorption chamber that communicates with the air inlet and the air outlet. The carbon dioxide absorption chamber contains, from top to bottom, a first filter cotton layer, a carbon dioxide absorbent layer, and a second filter cotton layer. The carbon dioxide absorbent layer is filled with a color-changing indicator.
[0008] Preferably, the air inlet and air outlet are symmetrically arranged on the left and right sides of the top of the transparent tank.
[0009] Preferably, the longitudinal section of both the air inlet and the air outlet is circular.
[0010] Preferably, the carbon dioxide absorbent layer is made of calcium lime, and the color-changing indicator is made of ethyl violet.
[0011] Preferably, both the first and second filter cotton layers are made of mesh sponge.
[0012] Preferably, the longitudinal section of the first filter cotton layer is arc-shaped.
[0013] The novel carbon dioxide absorber provided by this utility model, using the above technical solution, has the following beneficial effects: The transparent canister of this novel carbon dioxide absorber has an air inlet and an air outlet on its top side. The transparent canister contains a carbon dioxide absorption chamber that communicates with both the air inlet and outlet. Within the carbon dioxide absorption chamber, from top to bottom, are arranged a first filter cotton layer, a carbon dioxide absorbent layer, and a second filter cotton layer. The carbon dioxide absorbent layer is filled with a color-changing indicator. During use, the absorbent is connected to a ventilator and anesthesia machine through the air inlet and outlet, respectively, ensuring that the patient receives clean breathing gas, effectively expelling excess carbon dioxide from the body, maintaining airway patency and oxygen supply, and is easy for medical staff to master. By reusing exhaled gas, anesthetic agents can be saved and environmental impact reduced. Furthermore, the air inlet and outlet are both located at the top of the transparent canister, making it convenient to insert tubing and use. The overall structure is relatively simple, easy to assemble, and has a low manufacturing cost. Attached Figure Description
[0014] Figure 1 This is a front structural diagram of the present invention;
[0015] Figure 2 This is a side view of the present invention.
[0016] Figure 3 This is a schematic diagram of the top structure of this utility model;
[0017] In the diagram, 1-transparent tank, 2-air inlet, 3-air outlet, 4-carbon dioxide absorption chamber, 5-first filter cotton layer, 6-carbon dioxide absorbent layer, and 7-second filter cotton layer. Detailed Implementation
[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0021] like Figure 1-3 As shown, the novel carbon dioxide absorber includes a transparent canister 1. An air inlet 2 and an air outlet 3 are respectively opened on the top side of the transparent canister 1. A carbon dioxide absorption chamber 4 is disposed inside the transparent canister 1, communicating with the air inlet 2 and the air outlet 3 respectively. A first filter cotton layer 5, a carbon dioxide absorbent layer 6, and a second filter cotton layer 7 are arranged sequentially from top to bottom inside the carbon dioxide absorption chamber 4. The carbon dioxide absorbent layer 6 is filled with a color-changing indicator. It can be understood that the carbon dioxide absorbent layer 6 is made of calcium lime, the color-changing indicator is made of ethyl violet, the first filter layer 5 and the second filter cotton layer 7 are both made of mesh sponge, and the transparent canister 1 is made of polycarbonate.
[0022] Specifically, the air inlet 2 and air outlet 3 are symmetrically arranged on the top left and right sides of the transparent container 1 for easy insertion of tubing. The longitudinal sections of both the air inlet 2 and air outlet 3 are circular. The carbon dioxide absorbent layer 6 consists of porous, loosely structured, uniformly sized particles. The longitudinal section of the first filter cotton 5 is arc-shaped, thus better absorbing the gas entering the carbon dioxide absorption chamber 4 from the air inlet 5. Understandably, the color-changing indicator changes from white to purple after absorbing carbon dioxide. The carbon dioxide absorbent is used to absorb carbon dioxide. The air inlet 2 is used to connect to the breathing circuit tubing, which is connected to the ventilator. The air outlet 3 is used to connect to the anesthesia machine.
[0023] Understandably, this utility model has a reasonable design and unique structure. When in use, it connects to the ventilator and anesthesia machine through the air inlet 2 and air outlet 3 respectively, which can ensure that the patient receives clean breathing gas, help the patient effectively expel excess carbon dioxide from the body, maintain airway patency and oxygen supply, and is easy for medical staff to master the usage method. By reusing the exhaled gas, it can save anesthetics and reduce the impact on the environment. In addition, the air inlet 2 and air outlet 3 are both located at the top of the transparent canister, which makes it convenient to insert the tubing and use. The overall structure is relatively simple, easy to assemble, and has a low manufacturing cost.
[0024] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A novel carbon dioxide absorber comprising a transparent tank characterized in that: The top side of the transparent can is provided with an air inlet and an air outlet. The transparent can is provided with a carbon dioxide absorption chamber that is connected to the air inlet and the air outlet respectively. The carbon dioxide absorption chamber is provided with a first filter cotton layer, a carbon dioxide absorbent layer and a second filter cotton layer from top to bottom. The carbon dioxide absorbent layer is filled with a color-changing indicator.
2. The novel carbon dioxide absorber according to claim 1, characterized by: The air inlet and air outlet are symmetrically arranged on the top left and right sides of the transparent tank.
3. The novel carbon dioxide absorber according to claim 1, wherein: The longitudinal sections of both the air inlet and the air outlet are circular.
4. The novel carbon dioxide absorber according to claim 1, wherein: The carbon dioxide absorbent layer is made of calcium lime, and the color-changing indicator is made of ethyl violet.
5. The novel carbon dioxide absorber according to claim 1, wherein: Both the first and second filter cotton layers are made of mesh sponge.
6. The novel carbon dioxide absorber as claimed in claim 1, wherein: The longitudinal section of the first filter cotton layer is arc-shaped.