Artificial larynx capable of normally sounding after total laryngeal resection

By designing an epiglottic structure with an axial joint connection and a magnet mechanism, the problems of breathing, voice and swallowing difficulties in patients after total laryngectomy were solved, enabling normal voice production and preventing aspiration and choking, providing a near-natural speaking voice and concealing the tracheal stump.

CN121003510APending Publication Date: 2025-11-25崔哲洙
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Patent Information

Application Number
CN202511261263.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-05
Publication Date
2025-11-25

AI Technical Summary

Technical Problem

After total laryngectomy, patients are prone to aspiration or choking when speaking, breathing, or swallowing food. In addition, the tracheal stump is exposed in the center of the neck. Existing artificial larynxes have problems with aesthetics, sound quality, cost, and operation difficulty.

Method used

Design an artificial larynx that can produce normal voice after total laryngectomy. It adopts an epiglottis structure with a axial joint connection, uses a magnet and rod mechanism to keep the airway open, and achieves sound production by blocking the blade and metal chip. Combined with steel wire springs or magnets, it maintains the position of the epiglottis to prevent aspiration and choking.

Benefits of technology

It enables unobstructed breathing in any body position, prevents aspiration and choking, maintains a voice close to normal speech, avoids exposure of the tracheal stump, and satisfies normal vocalization and swallowing functions.

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Abstract

The invention discloses an artificial larynx capable of normally sounding after total laryngeal resection, which comprises a larynx body, a first epiglottis and a second epiglottis are respectively hinged to two sides of the top end of the larynx body through shaft joints, and a connecting mechanism and a movable mechanism are respectively mounted at the upper part and the lower part of the interior of the larynx body. According to the principle that homopolar magnets are mutually detached, mutual detaching force always exists between the two corresponding magnets, so that a certain gap is always kept between the blocking blade and the inner wall of the throat body, smooth breathing is always kept under any body position, the first epiglottis gradually falls down backwards through contraction of upper, middle and lower contractive muscles of the pharynx, and the first epiglottis is prevented from falling down. Under the action of the first rod body, the second rod body and the third rod body, the second epiglottis falls down forwards, so that the first epiglottis and the second epiglottis are overlapped above the larynx body, the upper part of the artificial larynx is sealed, food is prevented from entering the trachea, and serious symptoms such as mistaken pharynx or bucking are avoided.
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