A breathing guidance device and its control method and system

By providing constant flow of gas and real-time feedback through a breathing guidance device, the problem of mirror fogging during rigid nasopharyngoscopy is solved, allowing patients to breathe through their mouths, improving examination efficiency and comfort, and making it suitable for various medical scenarios.

CN122075858APending Publication Date: 2026-05-26WEST CHINA HOSPITAL SICHUAN UNIV
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Patent Information

Application Number
CN202610332910.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-18
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The current rigid nasopharyngoscopy has serious problems with mirror fogging, making it difficult for patients to cooperate by breathing through their mouths. It also lacks a real-time feedback mechanism, affecting the field of view and efficiency of the examination. The existing device cannot balance the comfort of short-term examinations with that of long-term treatments.

Method used

Design a breathing guidance device, including an air supply unit, a lip tube, an exhalation detection module, and a feedback module. By providing a constant flow of gas, detecting the patient's expiratory flow rate, and providing real-time feedback, the device guides the patient to breathe through their mouth, avoiding contact between the mirror and the warm, moist gas.

Benefits of technology

It effectively solves the problem of mirror fogging, reduces the difficulty of patient cooperation, improves examination efficiency, is suitable for short-term examinations and long-term treatments, and has a temperature and humidification function, taking into account both comfort and prevention of cross-infection.

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Abstract

This invention discloses a respiratory guidance device and its control method and system, relating to the field of medical device technology. The device includes a gas supply unit, a disposable lip-holding tube, an exhalation detection module, and a feedback module. The lip-holding tube has a middle lip-holding section with a breathing port. When the patient is in working condition, they hold this lip-holding section with their lips, the breathing port being located between the lips and outside the teeth, allowing the upper and lower teeth to close normally, achieving natural swallowing without stress on the masseter muscle. The gas supply unit provides a constant flow of clean gas, the exhalation detection module collects the patient's expiratory flow rate in real time, and the feedback module provides guidance prompts based on the expiratory status, helping the patient adjust to the correct oral breathing mode in real time. This invention, through its unique lip-holding tube design and intelligent feedback guidance, fundamentally solves the problem of nasal exhalation causing endoscope fogging during endoscopic examinations, significantly improving patient comfort and compliance, and can be extended to scenarios such as nebulizer therapy and postoperative monitoring.
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