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Apparatus and methods for vacuum- and mechanically-assisted fixation of medical electrical leads

  • US 7,729,783 B2
  • Filed: 04/26/2006
  • Issued: 06/01/2010
  • Est. Priority Date: 04/26/2006
  • Status: Active Grant
First Claim
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1. An apparatus for securing an implantable medical device (IMD) within the pericardial space via vacuum-and/or mechanically-assisted techniques, comprising:

  • a body structure comprised of biocompatible material, said body structure having an epicardium-contacting side and an opposing pericardial sac-contacting side, wherein said body structure includes a recessed portion on the pericardial sac-contacting side;

    an elongated medical electrical lead mechanically and electrically coupled to said body structure and fluidly coupled to the recessed portion, wherein the fluid coupling results from a lumen extending from a proximal end portion of the lead to said recessed portion;

    an electrode mounted on the epicardium contacting side of the body structure;

    a vacuum source coupled to the lumen and configured to evacuate the recessed portion; and

    a deployable stylet disposed within the lumen and configured to pierce a portion of pericardial tissue when the vacuum source evacuates the recessed portion.

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