Gas sensor for detecting exhaled gas methane

A technology of gas sensor and methane gas, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problem that the gas sensor cannot meet the requirements of human exhaled methane detection, so as to facilitate the promotion and popularization, reduce the detection cost, and operate Maintain Simple Effects
CN112557642APending Publication Date: 2021-03-26SUNVOU MEDICAL ELECTRONICS
1 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SUNVOU MEDICAL ELECTRONICS
Publication Date
2021-03-26

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a gas sensor for detecting exhaled gas methane. The gas sensor is composed of a gas sensitive element (1), a filtering structure (2), a catalytic combustion structure (3) and aconstant temperature structure (4). The gas sensitive element (1) is a gas sensitive semiconductor type element; the filtering structure (2), the gas sensitive element (1) and the catalytic combustion structure (3) are sequentially connected in a penetrating manner, and a gas outlet of the catalytic combustion structure (3) is connected with a gas inlet or a gas outlet of the filtering structure(2) to form a circulating gas path; the filtering structure (2) can filter responsive substances on the gas sensitive element (1), but does not filter methane gas; the filtering structure is composedof a carrier material, a catalyst or an adsorbent; the catalytic combustion structure (3) can fully combust methane gas; the constant temperature structure (4) is used for heating or keeping the temperature of the gas sensitive element (1) and the filtering structure (2) constant, so that the filtering efficiency of the filtering structure (2) and the signal stability of the gas sensitive element(1) are ensured.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of breath detection. Background technique

[0002] Studies have shown that human methanogens and the concentration of methane produced in exhaled breath can be used to detect intestinal diseases, including gastrointestinal microecological imbalance, inflammatory bowel disease and colorectal cancer. The research of laboratory analytical instruments shows that the normal concentration range of methane exhaled gas is 1-10ppm. If it is lower than 1ppm, it is considered to lack methanogenic bacteria or not produce methane gas. If it is higher than 10ppm, it is diagnosed as excessive reproduction of methanogenic bacteria or growth, which may lead to constipation, inflammatory bowel disease, or even colorectal cancer (see North American Consensus on Exhaled Hydrogen and Methane Testing for Gastrointestinal Diseases, 2017). However, at present, the technologies that can meet the measurement lower limit and accuracy requireme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More