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System and method for positioning an implantable medical device within a body

  • US 6,909,920 B2
  • Filed: 04/27/2001
  • Issued: 06/21/2005
  • Est. Priority Date: 04/27/2001
  • Status: Active Grant
First Claim
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1. An implantable medical device (IMD) adapted for implantation within a body, comprising:

  • an elongated body having a proximal end and a distal end, the distal end including an inner lumen;

    a helix residing within the inner lumen and adapted to be extended beyond the distal end of the elongated body, at least a portion of the helix having a diameter that is larger than the diameter of the elongated body when the helix is extended to aid in affixing the helix in an implantation; and

    a fixation assembly coupled to a proximal end of the helix and including a coupling member having a stylet interface slot wherein selective engagement with and rotation of the coupling member via the stylet interface slot, in a respective predetermined direction causes the helix to be extended and retracted, the fixation assembly being adapted to allow for retraction of the helix such that the helix re-assumes a compressed configuration within the inner lumen.

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