Breath test filter device, mouthpiece and breath test method for preventing cross contamination

By designing independent channel structures and one-way valves for the mouthpiece and device body in the breath testing equipment, the problem of cross-contamination when used by multiple people is solved, and the safety and accuracy of breath testing are achieved.

CN113633273BActive Publication Date: 2025-09-30TAIZHOU E LINKCARE MEDITECH CO LTD
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Patent Information

Application Number
CN202010346890.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-04-27
Publication Date
2025-09-30
Estimated Expiration
2040-04-27

AI Technical Summary

Technical Problem

Existing breath detection equipment has the risk of cross-contamination when used by multiple people, especially the cross-contamination problem caused by the shared parts of the exhalation path and the inhalation path has not been effectively solved.

Method used

A filtering device including a mouthpiece and a device body is designed. The inhalation channel and exhalation channel of the mouthpiece correspond to the channels of the device body and are airtightly combined with each other. A one-way valve ensures one-way gas flow. The mouthpiece is dedicated to a single person, while the device body is shared by multiple people. Filter material and humidifying paper are set in the mouthpiece to filter saliva, droplets, etc.

Benefits of technology

It effectively prevents cross contamination, ensures the independence of each user's exhalation and inhalation paths, reduces the risk of cross contamination, and is suitable for the accuracy of indicators such as nitric oxide in clinical breath testing.

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Abstract

The present invention provides a breath detection filter device that prevents cross contamination, a mouthpiece used therewith, and a breath detection method. The filter device includes a mouthpiece and a device body, and the mouthpiece is detachably connected to the device body. The mouthpiece includes an exhalation channel and an inhalation channel, a one-way valve is provided on the inhalation channel, and an opening and closing device is provided on the exhalation channel. The exhalation channel and the inhalation channel of the mouthpiece correspond to the exhalation channel and the inhalation channel of the device body respectively and are tightly connected without leakage. The mouthpiece in the filter device of the present invention is for single use, which can avoid contamination of the inhalation channel of the device body used by multiple people, so as to achieve the purpose of preventing cross contamination during the exhalation detection process of exhaled nitric oxide, etc., and is very suitable for promotion and application in clinical practice.
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