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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Design of a radio-linked implantable cochlear prosthesis using surface acoustic wave devices
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Design of a radio-linked implantable cochlear prosthesis using surface acoustic wave devices

机译：使用表面声波装置设计无线电链接的植入式人工耳蜗

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摘要

Cochlear prosthesis systems for postlingually deaf individuals (those who have become deaf due to disease or injury after having developed mature speech capability) are considered. These systems require the surgical implantation of an array of electrodes within the cochlea and are driven by processed sound signals from outside the body. A system that uses an analog signal approach for transcutaneous transfer of six processed speech data channels using frequency multiplexing is described. The system utilizes a filterbank of six narrowband surface acoustic wave (SAW) filters in the range 72-78 MHz with a 1.2-MHz channel spacing to multiplex the six carrier signals, frequency modulated, by the processed speech signals, onto a composite signal. The same SAW filters are used in the receiver filterbank for signal separation, but are housed in a miniaturized package. The system includes a portable transmitter and a receiver package which is to be implanted in the patient. The implanted circuits are supplied exclusively from power transferred from outside the body via a separate 10-MHz transcutaneous link.
机译：考虑用于耳聋后个体的耳蜗系统（那些因发展成熟的语言能力而因疾病或受伤而失聪的人）。这些系统需要在耳蜗内外科手术植入一系列电极，并由来自体外的经过处理的声音信号驱动。描述了一种系统，该系统使用模拟信号方法通过频率复用经皮传输六个处理后的语音数据通道。该系统利用六个在72-78 MHz范围内的窄带表面声波（SAW）滤波器的滤波器组，并以1.2 MHz的信道间隔将经过处理的语音信号进行频率调制的六个载波信号复用到一个复合信号上。接收器滤波器组中使用了相同的SAW滤波器来分离信号，但它们被封装在小型封装中。该系统包括便携式发射器和将被植入患者体内的接收器包装。植入的电路完全是通过单独的10 MHz经皮链路从人体外部传输的功率提供的。

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