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A breath ammonia analyzer

An analyzer and ammonia technology, applied in the field of exhaled gas detection, can solve problems such as inability to eat and drink

Active Publication Date: 2016-01-13
SUNVOU MEDICAL ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Since ammonia gas is very soluble in water, the NH in the solution 3 and NH 4 + The relative amount depends on the pH of the solution and is in a dynamic balance problem. Fasting for 8-12 hours and not eating or drinking during the test can ensure the acid-base balance in the mouth. Slow exhalation can let the NH in the mouth 4 + More converted to NH 3

Method used

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  • A breath ammonia analyzer
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Embodiment Construction

[0032] figure 1 A schematic diagram of the specific structure of the breath ammonia analyzer is given: it consists of an analysis module 100 and a control module 200, which respectively measure and analyze the collected breath gas, control the analysis module, and collect information, processing, storage and communication, etc.

[0033] The analysis module (100) is composed of a sample chamber (101), a three-way valve (102), an ammonia sensor (104) and a pump (105) in series through a pipeline (106); one of the three-way valves (102) There is an ammonia filter (103) between the outlet and the ammonia sensor (104).

[0034] The material selected for the sample chamber (101) and the pipeline (106) is polytetrafluoroethylene. The volume of the sample chamber (101) is 500ml, and a constant temperature module is installed in the sample chamber to ensure that the temperature of the sample chamber is not lower than 38°C, preferably kept at 40-60°C.

[0035] The ammonia gas filter ...

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Abstract

The invention relates to an expiration ammonia gas analyzer. An analysis module is used for measuring and analyzing the collected exhaled air, and consists of a sample chamber, a three-way valve, an ammonia gas filter, an ammonia gas sensor and a pump; a control module is used for controlling the analysis module, and performing information collection, processing, storage and communication, and the like. The analyzer is used for analyzing and calculating the concentration of ammonia gas in the exhaled air.

Description

technical field [0001] The invention relates to the field of exhalation gas detection. Background technique [0002] Changes in the ammonia content in the blood are related to various physiological diseases (such as liver, stomach, lung dysfunction, etc.), and when the ammonia in the blood is too high, it can be discharged through exhalation, which means that the exhaled ammonia can As a biomarker of various diseases and metabolic processes, it provides a non-invasive diagnostic method for clinical practice. [0003] In recent years, there have been a lot of studies on the detection of breath ammonia, such as D.J.Kearney published in "DigestiveDiseasesandSciences" in 2002 about the study of exhaled ammonia measurement for the diagnosis of winding bacillus pylori infection; P.Gouma in 2010 in "IeeeSensorsJournal "Reported that the use of metal oxide-based microsensors for exhaled ammonia detection research can reach ppb-level detection sensitivity; Giovanni Neri published a ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26G01N1/28
Inventor 曹青韩杰谢雷
Owner SUNVOU MEDICAL ELECTRONICS