Instrument for detecting gastrointestinal tract malignant pathogenic bacteria by using respiration

Abstract

The invention relates to the medical field and in particular to an instrument for detecting gastrointestinal tract bacteria by using respiration. The instrument specifically comprises an air circuit end, an air inlet pump, a pre-processing device, a processing stabilizing device, a pressure gauge, an aspirator pump and an infrared testing device, the pre-processing device is provided with a dryer.The air circuit end, the air inlet pump, the pre-processing device, the processing stabilizing device, the pressure gauge and the aspirator pump are successively connected through a pipeline, the infrared testing device comprises a middle gas channel, an infrared light source, an infrared sensing detecting element, a light switching motor provided with an electric frequency modulator and a mechanical chopper, the middle gas channel is internally provided with a gas inlet and a gas outlet, the gas inlet is connected with the aspirator pump through the pipeline, the infrared light source and the infrared sensing detecting element are respectively positioned at two sides of the middle gas channel; the light switching motor provided with the electric frequency modulator is positioned betweenthe middle gas channel and the infrared light source. The instrument is high in detection accuracy, and extensive in detection type, and has the extensive application in the medical rapid detection field.

Description

technical field [0001] The invention relates to the medical field, in particular to an instrument for detecting bacteria in the gastrointestinal tract by breathing. Background technique [0002] Medical data in recent years show that Chinese people suffer from frequent and long-term gastrointestinal diseases, such as bad breath, gastritis and other chronic diseases. The survey shows that more than 60% of chronic gastritis patients have Helicobacter pylori infection. Therefore, timely diagnosis and eradication of Helicobacter pylori infection is the prerequisite for blocking recurrent gastric disease and curing gastric disease. More than 60% of chronic gastritis patients have Helicobacter pylori infection. Therefore, timely diagnosis and eradication of Helicobacter pylori infection is the premise of blocking recurrent gastric disease and curing gastric disease. more attention by clinicians. There are many ways to detect HP infection. The commonly used rapid urease test need...

AI Technical Summary

Problems solved by technology

Invasive examinations include rapid urease method for biopsy under gastroscope, bacterial culture method for biopsy under gastroscope, and bacteriological examination of biopsy under gastroscope; Gas test and urea carbon 14 ( 14 C ) breath test, etc. Among them, the serum antibody method and fecal Hp antigen detection require patients to draw blood or leave stool, which is cumbersome to operate. Carbon 14 causes the subject to worry

At present, mass spectrometers and infrared sensing detection spectrometers are usually used to detect the concentration of CO2 composed of C13 and C12 at home and abroad. The cost of mass spectrometers and infrared sensing detection spectrometers is very high, about 500,000 to 1 million, and mass spectrometers are used A bottle of argon gas needs to be replaced every two months during detection, which will result in high cost of use. Existing high-precision analysis equipment has inaccurate sampling, and there is a problem that air and other impurities are mixed into the leaking string, and the test results are vulnerable. The deviation results caused by the external environment and temperature, the stability of the gas source pressure is not good, and the error of the gas volume inhaled each time is relatively large, resulting in different absorption of infrared light by carbon dioxide, which affects the measurement of the concentration of the measured substance. contains a large amount of water, and the sealing sheet that enters the gas collection path with the gas has a corrosion effect, which will also affect the measurement results. In addition, the existing equipment lacks the separation and detection of halitosis gas and urea carbon 13 ( 13 C) breath, so it is necessary to More in-depth research to improve the urea breath test is a non-invasive detection method to solve the above problems

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