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Coronary sinus lead having expandable matrix anchor

  • US 5,951,597 A
  • Filed: 04/14/1998
  • Issued: 09/14/1999
  • Est. Priority Date: 04/14/1998
  • Status: Expired due to Term
First Claim
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1. An electrical lead for applying cardiac stimulating pulses to the left ventricle of a patient'"'"'s heart, comprising:

  • (a) an elongated, flexible conductor contained within an insulating elastomeric jacket, the conductor terminating at an electrode proximate a distal end thereof and at an electrical terminal at a proximal end thereof; and

    (b) a fixation member located on the lead proximal of the electrode for restraining displacement of the electrode, the fixation member comprising a water-permeable polymeric material incorporating an osmotically active agent that swells upon absorbing body fluids therein.

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