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Single channel microstimulator

  • US 5,314,458 A
  • Filed: 05/24/1993
  • Issued: 05/24/1994
  • Est. Priority Date: 06/01/1990
  • Status: Expired due to Fees
First Claim
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1. An electrical stimulator system for delivering a controlled electrical stimulation into the body of a living being, the system comprising:

  • a non-implantable portion, said non-implantable portion being provided with;

    code generator means for producing a coded information; and

    transmitter means for transmitting an electromagnetic energy signal, said electromagnetic energy signal containing said coded information;

    an implantable portion comprising a silicon substrate upon which are provided;

    a receiver coil for receiving said electromagnetic energy signal;

    code detector means coupled to said receiver coil for detecting coded information contained in said electromagnetic energy signal;

    energy storage means coupled to said receiver coil for storing electrical energy obtained from said electromagnetic energy signal;

    a housing cover having an edge portion which is bonded to a surface of said silicon substrate to form an hermetically sealed housing with said silicon substrate, said receiver coil, said code detector means, and said energy storage means being arranged in said hermetically sealed housing;

    stimulator electrode means formed directly on said surface of said silicon substrate coupled to said energy storage means for coupling electrically with the living being, said stimulator electrode means being formed of a plurality of electrode subportions, said stimulator electrode means being arranged exterior of said hermetically sealed housing; and

    electrical coupling means for coupling said stimulator electrode means electrically to the interior of said hermetically sealed housing, said electrical coupling means comprising thin metallic conductor means interposed intermediate of said silicon substrate and said edge portion of said housing cover bonded thereto.

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