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Flexible retinal electrode array

Patent ·
OSTI ID:908141

An electrode array which has applications for neural stimulation and sensing. The electrode array can include a large number of electrodes each of which is flexibly attached to a common substrate using a plurality of springs to allow the electrodes to move independently. The electrode array can be formed from a combination of bulk and surface micromachining, with electrode tips that can include an electroplated metal (e.g. platinum, iridium, gold or titanium) or a metal oxide (e.g. iridium oxide) for biocompatibility. The electrode array can be used to form a part of a neural prosthesis, and is particularly well adapted for use in an implantable retinal prosthesis where the electrodes can be tailored to provide a uniform gentle contact pressure with optional sensing of this contact pressure at one or more of the electrodes.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM
Sponsoring Organization:
United States Department of Energy
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
7,127,301
Application Number:
10/426,152
OSTI ID:
908141
Country of Publication:
United States
Language:
English

References (4)

Single chip CMOS imagers and flexible microelectronic stimulators for a retina implant system journal May 2000
Ocular implants for the blind journal May 1996
Micromachined conformal electrode array for retinal prosthesis application conference January 2003
Pattern electrical stimulation of the human retina journal July 1999

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