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Proceedings Paper

Micromachined conformal electrode array for retinal prosthesis application
Author(s): Murat Okandan; Kurt O. Wessendorf; Todd R. Christenson; Tom Lemp; Randy J. Shul; Michael Baker; Conrad James; Ramona Myers; David Stein
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Paper Abstract

Retinal prosthesis projects around the world have been pursuing a functional replacement system for those with retinal degeneration. In this paper, we will outline the concept for a micromachined conformal electrode array and present preliminary fabrication results. Individual electrodes are designed to float on micromachined springs on a substrate that will enable the adjustment of spring constants and therefore contact force by adjusting the dimensions of the springs at each electrode. This will also allow us to accommodate the varying curvature/topography of the retina. We believe that this approach will provide several advantages by improving the electrode/tissue interface as well as generating some new options for in-situ measurements and overall system design.

Paper Details

Date Published: 17 January 2003
PDF: 7 pages
Proc. SPIE 4982, Microfluidics, BioMEMS, and Medical Microsystems, (17 January 2003); doi: 10.1117/12.478154
Show Author Affiliations
Murat Okandan, Sandia National Labs. (United States)
Kurt O. Wessendorf, Sandia National Labs. (United States)
Todd R. Christenson, Sandia National Labs. (United States)
Tom Lemp, Sandia National Labs. (United States)
Randy J. Shul, Sandia National Labs. (United States)
Michael Baker, Sandia National Labs. (United States)
Conrad James, Sandia National Labs. (United States)
Ramona Myers, Sandia National Labs (United States)
David Stein, Sandia National Labs. (United States)


Published in SPIE Proceedings Vol. 4982:
Microfluidics, BioMEMS, and Medical Microsystems
Holger Becker; Peter Woias, Editor(s)

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