Leadless Cardiac Pacemaker with Secondary Fixation Capability
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United States of America Patent
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Issued Date -
Mar 26, 2009
app pub date -
Sep 19, 2008
filing date -
Sep 20, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to leadless cardiac pacemakers (LBS), and elements and methods by which they affix to the heart. The invention relates particularly to a secondary fixation of leadless pacemakers which also include a primary fixation. Secondary fixation elements for LBS's may either actively engage an attachment site, or more passively engage structures within a heart chamber. Active secondary fixation elements include a tether extending from the LBS to an anchor at another site. Such sites may be either intracardial or extracardial, as on a vein through which the LBS was conveyed to the heart, the internal or external surface thereof. Passive secondary fixation elements entangle within intraventricular structure such as trabeculae carneae, thereby contributing to fixation of the LBS at the implant site.
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