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Penetrating electrodes for retinal stimulation

  • US 8,718,784 B2
  • Filed: 01/14/2010
  • Issued: 05/06/2014
  • Est. Priority Date: 01/14/2010
  • Status: Active Grant
First Claim
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1. An apparatus configured for implantation in a body of a subject, comprising:

  • a support substrate; and

    at least 500 electrodes protruding at least 50 um from the support substrate, each electrode having (a) a distal tip, (b) an electrically-exposed tip portion, (c) an electrically-insulated body portion, proximal to the electrically-exposed tip portion, and (d) a cross-section of 50-200 um2, at a site 20 um from the distal tip,wherein the electrically-exposed tip portion of each electrode and the electrically-insulated body portion of each electrode are configured to penetrate retinal tissue of an eye of the subject, andwherein each electrode is less than 600 um in length.

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