Air collecting device for expiration test

By designing a breath test gas collection device and using components such as a one-way valve, a filter block and an inclined tube, the problems of cavity gas interference and time period classification and storage were solved, thereby improving the accuracy and efficiency of exhaled gas detection.

CN223453258UActive Publication Date: 2025-10-21XUCHANG CENT HOSPITAL
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Patent Information

Application Number
CN202422534956.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-18
Publication Date
2025-10-21
Estimated Expiration
2034-10-18

AI Technical Summary

Technical Problem

Existing breath test devices cannot effectively remove the interference of luminal air on alveolar air, and cannot conveniently collect and store exhaled gas samples in different time periods, affecting the accuracy of the test results.

Method used

A breath test gas collection device was designed, which includes a gas storage structure, a rotation structure, a gas circulation structure and an interference gas collection structure. Through components such as a one-way valve, a filter block and an inclined tube, the separation and filtration of the cavity gas are achieved, and the exhaled gas can be stored in different gas storage bags at different time periods.

Benefits of technology

The accuracy of exhaled gas test results is improved, and the batch collection and analysis of exhaled gas samples are ensured by reducing cavity gas interference and convenient time period classification storage.

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Abstract

The utility model relates to a gas collecting device for an expiration test, which effectively solves the problems that the existing expiration collecting device is inconvenient to remove interference gas, and is inconvenient to classify, collect and store gas exhaled by a detector in different time periods, so that the accuracy of an expiration test result is influenced. According to the expiration test gas collection device, cavity gas in a cavity of a detector can enter the gas circulation structure at the first time and is stored in the interference gas collection structure, so that the cavity gas is removed, and alveolar gas exhaled by the detector subsequently flows through the rotating structure and enters one gas storage bag in the gas storage structure; a filtering block in the rotating structure filters out part of non-target gas, so that the accuracy of a detection result is improved; the gas storage structure and the rotating structure can be convenient for a detector to store exhaled gas into different gas storage bags in different time periods, so that exhaled gas samples in different time periods can be stored in batches, and the accuracy of exhaled gas detection results is further improved.
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