A human body exhaled air processing system and processing method thereof

Abstract

A human body exhaled gas processing system and processing method thereof, the air inlet is provided with a trachea I and a trachea II, the trachea I and the trachea II are respectively connected to two inlet ports of a two-position three-way solenoid valve, and the two-position three-way solenoid valve The gas outlet port is connected to the membrane gas drying tube through the trachea. A closed space is formed between the inner membrane and the outer tube of the membrane gas drying tube. One end of the inner membrane is connected to the trachea, and the other end of the inner membrane is connected to the gas outlet through the trachea. A mass flow meter and a mass flow control meter are installed on the trachea connected to the two-position three-way solenoid valve, and a temperature and humidity recorder is installed on the trachea connected between the inner membrane and the gas outlet, and only one through hole is opened at the connection between the outer tube and the inner membrane. It is sealed and connected with the suction port of the vacuum pump; a heating line and a particulate filter are installed on the trachea II; the present invention can quickly and stably control the humidity of the exhaled air under the premise of reducing the impact on VOCs, and control the humidity of the exhaled air. Particle and droplet filtration, and the system is self-cleaning.

Description

technical field [0001] The invention relates to a gas processing system, in particular to a human body exhaled gas processing system and a processing method thereof, which belong to the technical field of biomedical equipment, and are especially suitable for the analysis and measurement of the human body exhaled gas components involving chromatography mass spectrometry, and the detection of exhaled gas. Electronic nose analysis and other application scenarios. Background technique [0002] Some products of human metabolism can be transported by the blood to the lungs, enter the alveoli through gas exchange, and appear in the exhaled air. Metabolomics and preventive medicine have demonstrated that volatile organic compounds (VOCs) in exhaled breath change with pathological changes in the body. At present, there are thousands of volatile organic compounds (VOCs) detected in the exhaled breath of the human body, and the average number of volatile organic compounds (VOCs) in th...

AI Technical Summary

Problems solved by technology

First of all, the concentration level of volatile organic compounds (VOCs) in human exhaled air is very low, usually at ppbv level, which puts high demands on the sensitivity of collection, storage, processing and analysis methods; secondly, human exhaled air contains a large amount of The presence of water is an unfavorable factor for the detection method of gas chromatography, because many chromatographic columns used in detecting volatile organic compounds (VOCs) are very sensitive to the moisture in the sample; in addition, in the process of sample adsorption and enrichment, The presence of water will reduce the ability of the adsorbent to absorb volatile organic compounds (VOCs). In addition, due to the complex composition of exhaled gas, the collection, storage and processing methods of samples are also limited, and it is very easy to cause volatilization in the sample during processing. Due to the lack or increase of VOCs, the exhaled gas treatment system significantly affects the detection of exhaled gas components. However, the existing technology does not specifically develop a targeted exhaled gas treatment system.

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