论文信息 - A CMOS implantable multielectrode auditory stimulator for the deaf

A CMOS implantable multielectrode auditory stimulator for the deaf

Describes an implantable multielectrode neural stimulator developed for electrical stimulation of the auditory nerves with the aim of producing a sensation of sound in sensory deaf ears. Power and digitally coded amplitude and frequency data are transcutaneously transmitted to the implantable stimulator using an inductively coupled RF link and an ultrasonic link, respectively. A novel low-power low-component count CMOS charge-redistribution digital-to-analog (D/A) demultiplexer which produces a high resolution neuro-compatible charge output is described. An extended missing pulse code is developed which assures higher reliability and protection against excess and erroneous stimulations. An experimental 4-electrode system capable of stimulating up to a 5-kHz rate and consuming less than 10 mW of power is presented.

T.R. Gheewala | R.D. Melen | R.L. White

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