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IMPLANTABLE MEDICAL DEVICE HOUSING MODIFIED FOR PIEZOELECTRIC ENERGY HARVESTING

  • US 20100317978A1
  • Filed: 05/06/2010
  • Published: 12/16/2010
  • Est. Priority Date: 06/10/2009
  • Status: Abandoned Application
First Claim
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1. An implantable sensor for sensing one or more physiologic parameters within a body lumen, comprising:

  • a housing including an exterior housing wall having an inner surface and an outer surface, the exterior housing wall defining an internal cavity and including an electrically conductive material forming a first electrical conductor;

    a flexible piezoelectric layer disposed adjacent to a portion of the exterior wall;

    a second electrical conductor disposed adjacent to the piezoelectric layer;

    a sensor module disposed within the interior cavity of the housing, the sensor module configured to sense one or more physiologic parameters within the body lumen; and

    power circuitry configured to convert a voltage differential between the first and second conductors into an operating current for powering one or more components of the implantable sensor;

    wherein the piezoelectric layer is configured to displace in response to periodic pressure pulses within the body lumen and generate a voltage differential between the first and second electrical conductors.

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