Electronic larynx air sounding auxiliary system

Abstract

An electronic larynx air sounding auxiliary system belongs to the technical field of medical treatment and comprises a micro-air sensor, an A/D conversion module, a PWM generation module, a controllable electronic air pump, a reed artificial throat and a conduit, wherein the micro-air sensor is arranged in a pre-throat laryngocarcinoma post-surgery incision part to measure flow speed and flow amount parameters of air in a laryngeal tube to achieve a simulation signal; the A/D conversion module can convert the simulation signal into a digital signal representing air flow speed and flow amount; the digital signal is generated into a pulse width PWM wave; the PWM wave can control rotating speed of the controllable electronic air pump, so an air flow having the same flow speed and same flow amount as the air in the laryngeal tube can be produced; and the air flow enters the conduits and then an oral cavity and a sound can be made. The electronic larynx air sounding auxiliary system requires low cost and has great durableness, causes no secondary infections to patients and is suitable for carious pre-throat laryngocarcinoma post-surgery patients.

Description

technical field [0001] The invention relates to an electronic throat gas sounding auxiliary system, which belongs to the field of medical technology. [0002] technical background [0003] If the vocal cords are involved in advanced laryngeal cancer, the vocal cords cannot be preserved and a total laryngectomy is required. The vibration of the vocal cords and the transmission of airflow vibration between the larynx and the oropharynx are the most basic and important process of language formation. The loss of vocal cords and complete airflow transmission channels makes patients unable to vocalize autonomously after laryngeal cancer surgery, which seriously affects the quality of life of patients after surgery. [0004] For the reconstruction of voice after total laryngectomy, people continue to explore and research, but have not yet found a way to fully restore voice ability; currently there are mainly the following voice methods: [0005] 1. Esophageal pronunciation method I...

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Problems solved by technology

[0007] 2. Vocal reconstruction surgery Tracheostomy: This method is to use a section of esophageal mucosa and trachea to form a replacement vocalization channel. The esophageal feeding channel may be obstructed, coupled with the risk of aspiration infection, it is often difficult to achieve the sound effect; and for patients with a wide range of invasion and need to resect the esophagus, it is even more impossible to achieve

This kind of mechanical sound is coherent, can sound for a long time, and has no special requirements on the physical condition of the patient after surgery; however, the patient needs to free up one hand to fix the electronic vibration device tightly on the neck to ensure smooth vibration of the air in the throat; Synchronous control switch during vocalization to reduce the voice and improve the clarity of speech, but as an assisting vocalization device, it is expensive, and many postoperative patients cannot afford it

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