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Implantable defibrillation system with lead having improved porous surface coating

  • US 5,632,770 A
  • Filed: 03/17/1995
  • Issued: 05/27/1997
  • Est. Priority Date: 09/17/1992
  • Status: Expired due to Term
First Claim
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1. An implantable defibrillation system with an intracardial or subcutaneous defibrillation electrode, the improvement whereinthe defibrillation electrode includes portions with a porous surface coating comprising one of an inert element, an inert chemical compound, and an inert alloy, the porous surface coating having a fractal three dimensional geometry and an active surface area that is greater by a factor of at least 1000 than a corresponding surface area resulting from the basic geometrical shape of the electrode.

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