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Expiratory air nitric oxide content detection system and detection method thereof

A nitric oxide and detection system technology, which is applied in the direction of measuring devices, analyzing gas mixtures, and the structural details of gas analyzers, can solve the problems of affecting detection results, detector burnout, and affecting the detector's reception of energy signals. Achieve the effects of reducing interference, improving accuracy, and avoiding detector burnout

Inactive Publication Date: 2019-01-25
深圳市龙华区中心医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing detection technology usually directly collects the breath exhaled by the subject, which contains a large amount of water mist. The existence of water mist will absorb part of the energy, and it is easy to form a water film on the detector, which will affect the detector's reception of energy signals. Cause serious interference and affect the detection results; at the same time, the water film on the detector is also easy to cause the detector to burn out

Method used

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  • Expiratory air nitric oxide content detection system and detection method thereof
  • Expiratory air nitric oxide content detection system and detection method thereof
  • Expiratory air nitric oxide content detection system and detection method thereof

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Embodiment 1

[0031] see Figure 1-3 , an exhaled breath nitric oxide content detection system and its detection method, comprising an exhaled air collection unit 1, an exhaled air preprocessing unit 2, an exhaled air nitric oxide detection unit 3, a processor 4, an information input unit 5, a display unit 6;

[0032] The exhaled breath collection unit 1 is used for collecting the exhaled air in the human airway, and conveying the exhaled air to the exhaled air nitric oxide detection unit 3;

[0033] The expired breath pretreatment unit 2 is connected in series between the expired breath collection unit 1 and the expired breath nitric oxide detection unit 3, and is used to filter the water mist in the expired breath and retain the gaseous water in the expired breath;

[0034] The exhaled breath nitric oxide detection unit 3 is used to detect the exhaled breath nitric oxide content, and includes an oxidation chamber 7 and a detection chamber 8 that communicate with each other, and the oxida...

Embodiment 2

[0043] see Figure 4 , a detection method of exhaled nitric oxide content, comprising the following steps:

[0044] Step 1. Collect the exhaled air of the subject: the exhaled air collected by the subject includes one or both of the exhaled air from the lower respiratory tract and the exhaled air from the nasal cavity;

[0045] Step 2. Filter the water mist in the exhaled breath;

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Abstract

The invention relates to the technical field of medical assistance equipment, and discloses an expiratory air nitric oxide content detection system and a detection method thereof. The detection systemcomprises an expiratory air collection unit, an expiratory air pretreatment unit, an expiratory air nitric oxide detection unit, a processor, an information input unit and a display unit, wherein theexpiratory air nitric oxide detection unit uses nitric oxide to be oxidized into excited state nitrogen dioxide; through a detector, the energy signal released during the returning of the excited state nitrogen dioxide to the basic state is detected; the quantification of the nitric oxide in the expiratory air is performed. Through a front-mounted expiratory air pretreatment unit of the expiratory air nitric oxide detection unit, water mist in the expiratory air is eliminated; the interference of the water mist on the energy signals is reduced; the data detection accuracy is improved; meanwhile, the problem of burnt damage of the detector due to formation of a water film on the detector is solved.

Description

technical field [0001] The invention relates to the technical field of medical auxiliary equipment, in particular to a system for detecting nitric oxide content in exhaled breath and a method for detecting the same. Background technique [0002] Exhaled nitric oxide (FeNO) detection is an examination item that is gradually popularized in respiratory department. The entire human airway will synthesize nitric oxide. Exhaled nitric oxide usually comes from respiratory epithelial cells, airway and vascular endothelial interstitial cells under the action of nitric oxide synthase, arginine oxidative deamination produces endogenous Nitric oxide. [0003] Under normal physiological conditions, most nitric oxide synthases are not expressed, but in inflammatory states, nitric oxide synthase is activated to produce large amounts of nitric oxide. Therefore, the content of nitric oxide in exhaled breath can be used as a judgment indicator of respiratory diseases to a certain extent; it...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/004
Inventor 黄冬生
Owner 深圳市龙华区中心医院