Method and apparatus for visual neural stimulation
The present invention is a flexible circuit electrode array for stimulating neurons where the electrode are less than 20 μm in size and less than 60 μm apart. The array is preferably arranged in a hexagonal pattern to maximize electrode density, and longer in the horizontal direction to correspond to a normal visual scene. The array includes a polymer base layer, metal traces deposited on the polymer base layer, including electrodes suitable to stimulate neural tissue, and a polymer top layer deposited on the polymer base layer and the metal traces defining openings for the electrodes smaller than the electrodes to overlap the electrodes.
Second Sight Medical Products, Inc.
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A61N Y10T
inventional additional
E. J. Chris Robert J. Matthew J.
Chichilnisky Sekirnjak Greenberg McMahon