Self-calibrating breath nitric oxide analyzer

A nitric oxide and analyzer technology, applied in the direction of material analysis, material analysis through electromagnetic means, instruments, etc., can solve the problems of inconvenient correction, achieve great application value, and solve the effect of calibration problems

Active Publication Date: 2017-01-25
SUNVOU MEDICAL ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this effect can be corrected by zero gas measurement, too frequent correction is not convenient in practical application

Method used

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  • Self-calibrating breath nitric oxide analyzer
  • Self-calibrating breath nitric oxide analyzer
  • Self-calibrating breath nitric oxide analyzer

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Embodiment Construction

[0027] For the detection of exhaled nitric oxide, the expiratory flow and pressure recommended by the "Standard" are 50ml / s and 5-20cmH respectively 2 O, the exhalation time is greater than 6s, so at least about 300ml of exhaled breath sample is exhaled, the former part must be discharged because it is the gas in the mouth rather than the airway or lungs, and the latter part is used for detection. In addition, what must be considered is how to discharge the original gas in the gas circuit and components of the detector at the same time, so as to prevent these gases from being mixed into the incoming breath and affect the reliability of the detection.

[0028]The design of the exhalation control module fully considers the requirements of the above standards for exhalation flow, pressure, and time control. The control of exhalation pressure is realized by adjusting the resistance of the air circuit, and the control of exhalation flow is realized by setting the flow pressure feedb...

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Abstract

The invention relates to a self-calibration exhaled nitric oxide analyzer. The concentration of exhaled nitric oxide is calculated by using two algorithms through one-time exhaling measurement on the analyzer. The repeatability, the accuracy and the reliability of a measurement result are improved by comparison and mutual authentication of the results of the two algorithms.

Description

technical field [0001] The invention relates to the field of exhalation gas detection. Background technique [0002] The use of exhaled nitric oxide as a marker of airway inflammation in the detection and analysis of asthma and other respiratory diseases has been fully affirmed by the medical community. In 2005, the American Thoracic Society and the European Respiratory Society jointly formulated and published a standardized method for this measurement "ATS / ERS Recommendations for Standardized Procedures for the Online and Offline Measurement of Exhaled Low Respiratory Nitric Oxide and NasalNitric Oxide, 2005", proposed in 2011 Its clinical application guidelines (An Official ATS Clinical Practice Guideline: Interpretation of exhaled Nitric Oxide Level (FeNO) for Clinical Applications), these standards and guidelines are used to guide how to conduct detection and use the detection results for the diagnosis and efficacy evaluation of respiratory diseases such as asthma . ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/416
Inventor 谢雷邓中全郭世英韩杰曹青韩益苹
Owner SUNVOU MEDICAL ELECTRONICS
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