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Transvenous internal cardiac defibrillation apparatus having lead and electrode providing even distribution of electrical charge

  • US 5,662,697 A
  • Filed: 10/17/1995
  • Issued: 09/02/1997
  • Est. Priority Date: 10/17/1995
  • Status: Expired due to Fees
First Claim
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1. An apparatus for ventricular cardioverting or defibrillation of a heart comprising:

  • an implantable pulse generator;

    a lead having a proximal end and a distal end;

    a connector assembly attached to the proximal end of said lead, said connector assembly allowing connection of said lead to said pulse generator;

    an electrode assembly located at the distal end of said lead, said electrode assembly including a defibrillation electrode positioned proximally from the distal end of said lead;

    a defibrillation conductor extending from said connector assembly at the proximal end of said lead to the defibrillation electrode at the distal end of said lead; and

    means for evenly distributing electrical charge emitted by said defibrillation electrode comprising at least one insulator dividing said defibrillation electrode into at least two electrically interconnected segments, each segment having an axial length, and wherein the respective axial lengths of said electrically interconnected segments decreases from a proximal end of said defibrillation electrode to a distal end of said defibrillation electrode.

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