Implantable power and data receiver and neuro-stimulus chip for a retinal prosthesis system

Mark Clements, Kasin Vichienchom, Wentai Liu, Chris Hughes, Elliot McGucken, Chris DeMarco, Jeff Mueller, Mark Humayun, Eugene De Juan, Jim Weiland, Rob Greenberg

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

In certain diseases of the retina, the photoreceptor cells do not respond to light and thus cause blindness. We describe an electronic retinal prosthesis system that can provide some vision to patients by direct electrical stimulation of the retinal neurons. Power and image data are transferred to the implanted stimulator through a wireless inductive link. The system consists of an external video camera with image processing and encoding hardware and a power and data transmitter. Implanted in the eye are power and data receivers, stimulus circuits, and electrode array. The most recent prototype implant device, implemented in 1.2 micron CMOS, implements demodulation and decoding of the data stream and produces the biphasic current stimulus pulses for an array of 100 retinal electrodes at video frame rates.

Original languageEnglish
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
PublisherIEEE
PagesI-194 - I-197
ISBN (Print)0780354729
Publication statusPublished - 1999
EventProceedings of the 1999 IEEE International Symposium on Circuits and Systems, ISCAS '99 - Orlando, FL, USA
Duration: 1999 May 301999 Jun 2

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume1
ISSN (Print)0271-4310

Other

OtherProceedings of the 1999 IEEE International Symposium on Circuits and Systems, ISCAS '99
CityOrlando, FL, USA
Period99-05-3099-06-02

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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