Artificial larynx. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Electronics in medicine
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In some cases, with such serious diseases as cancer of the larynx, it is possible to prevent the development of the disease in a patient only by removing the larynx by surgery. Loss of vocal cords leads to the fact that the patient loses the ability to speak. In this case, the use of an "artificial larynx" can alleviate the patient's situation.
One of the designs of such an "artificial larynx", manufactured by the Italian company Ticchioni, is shown schematically in Fig. 1. The low-frequency generator generates electrical vibrations, which are transmitted through wires to a vibrator 2 with a membrane 3, mounted in a housing 1, resembling an ordinary smoking pipe. The generator is switched on by pressing button 4 located on the side of the tube. Thus, the vibrator, when the button is pressed, performs the functions of the lost vocal cords.
Sound vibrations are fed through the tube channel into the oral cavity, where they are modulated with the help of the articulatory apparatus - tongue, lips, etc. - and turn into a fairly clear speech. The speech can then be amplified by an additional amplifier with loudspeaker.
The small size of the case, which houses the electronic part of such a larynx, together with a power source, allows you to carry it in your pocket. According to the report, the design of the artificial larynx by Ticchioni turned out to be the most successful both in terms of external design and in terms of natural sounding of the patient's voice. "Radio-Electronics", June 1959
Literature
- Radio No. 10, 1957, p. 61
Publication: N. Bolshakov, rf.atnn.ru
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