Implant electronics for intraocular epiretinal neuro-stimulators

Torsten Lehmann, Nigel H. Lovell, Gregg J. Suaning, Philip Preston, Yan T. Wong, Norbert Dommel, Louis Hyunsuk Jung, Yashodhan Moghe, Kushal Das

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

8 Citations (Scopus)


In this paper, we discuss system architectures, design challenges and circuit implementation principles for intraocular epiretinal neuro-stimulators to be used as part of vision prostheses in partially restoring vision to the blind. Our unique hexagonal electrode placement allows focused simultaneous stimulation which allow the electrode count to scale. A new dual-channel transcutaneous inductive link is used to transfer power and data efficiently to the implant, and a new dualvoltage power rectifier provides two implant supplies without the need for a DC-DC converter. Low-power designs of current stimulators and ECAP amplifiers are also outlined in the paper.

Original languageEnglish
Title of host publication2008 IEEE International Symposium on Circuits and Systems, ISCAS 2008
Number of pages4
Publication statusPublished - 2008
Externally publishedYes
EventIEEE International Symposium on Circuits and Systems 2008 - Seattle, United States of America
Duration: 18 May 200821 May 2008 (Proceedings)


ConferenceIEEE International Symposium on Circuits and Systems 2008
Abbreviated titleISCAS 2008
Country/TerritoryUnited States of America
Internet address

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