Airway patency evaluation device and method

By designing an airway patency assessment device comprising a catheter body and a reed assembly, and utilizing vibration data analysis of the reeds under airflow, the subjective and misjudgment problems of airway patency assessment in the prior art are solved, achieving a more accurate airway patency assessment.

CN121845554APending Publication Date: 2026-04-14RUIJIN HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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Patent Information

Application Number
CN202511605272.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-05
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing methods for assessing airway patency rely on physicians’ subjective feelings, lack objective and quantitative standards, make it difficult to accurately determine mild obstruction, and are easily affected by external airflow, leading to misjudgment and delayed intervention.

Method used

Design an airway patency assessment device, including a catheter body, a reed assembly, a measuring component, and an assessment component. The device uses the reeds to generate vibrations under the action of airflow, and collects and analyzes the vibration data to assess airway patency.

Benefits of technology

It provides an objective and quantitative assessment method that can distinguish between airway patency and obstruction, improves the response to weak airflow, enhances clinical adaptability and assessment accuracy, and reduces misjudgments and false negative results.

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Abstract

The invention discloses an airway patency assessment device. The airway patency assessment device comprises a catheter body, a measuring assembly and an assessment assembly, the catheter body is trumpet-shaped, the two ends of the catheter body are open, the opening of the large-diameter end is an expiration port, the opening of the small-diameter end is an air outlet, an air flow channel is formed between the expiration port and the air outlet, and air enters the air flow channel through the expiration port formed in the catheter body; a reed set is arranged on the inner wall of the guide pipe body and comprises at least one reed, and the reed can generate vibration when making contact with airflow. The measuring assembly is used for collecting vibration data of the reed group; and the evaluation assembly is used for evaluating the airway patency based on the vibration data acquired by the measurement assembly. And the smoothness of the air passage can be evaluated through vibration generated when the arranged reed is in contact with the air flow.
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