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Leadless cardiac pacemaker with secondary fixation capability

  • US 9,272,155 B2
  • Filed: 08/14/2013
  • Issued: 03/01/2016
  • Est. Priority Date: 02/02/2009
  • Status: Active Grant
First Claim
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1. A leadless biostimulator comprising:

  • a housing sized and configured to be disposed within a heart chamber of a human;

    a primary fixation element configured to actively affix the biostimulator to a heart wall within the heart chamber; and

    an expandable structure connected to a proximal portion of the housing, the expandable structure being adapted to assume a compressed linear configuration during delivery and an expanded configuration after delivery, wherein the expanded configuration of the expandable structure has a cross-sectional dimension that is greater than a diameter of a vascular exit pathway from the heart chamber so that expansion of expandable structure confines the leadless biostimulator and the expandable structure to the heart chamber.

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