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Expandable fixation mechanism

  • US 8,489,189 B2
  • Filed: 10/29/2004
  • Issued: 07/16/2013
  • Est. Priority Date: 10/29/2004
  • Status: Active Grant
First Claim
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1. An implantable medical device comprising:

  • a housing comprising a first end and a second end substantially opposite the first end;

    an electrode coupled to the housing;

    a pulse generator coupled to the electrode; and

    a plurality of collapsible fixation structures coupled to the housing, wherein the collapsible fixation structures are configured to collapse in a first direction toward the first end of the housing and in a second direction toward the second end, wherein the fixation structures include flanges, and the flanges each comprise a plurality of ribs and webbing deployed between at least two of the ribs.

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