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Bipolar body tissue electrode

  • US 4,010,758 A
  • Filed: 09/03/1975
  • Issued: 03/08/1977
  • Est. Priority Date: 09/03/1975
  • Status: Expired due to Term
First Claim
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1. A heart tissue implantable bipolar electrode assembly for disposition within a living animal comprising:

  • a. first and second insulated, flexible conductors, each having a proximal end adapted to be connected to an energizing source and a distal end;

    b. a first conductive, rigid, helically-shaped electrode adapted to be rotatively inserted within the tissue and having a proximal end electrically connected to said distal end of said first conductor;

    c. an inert insulating covering disposed about said first electrode leaving a limited portion thereof exposed;

    d. a second conductive, annularly-shaped electrode disposed about said first electrode and being electrically connected to said distal end of said second conductor, said second electrode having a substantially flat surface adapted for intimate contact with the tissue; and

    e. insulating housing means for mounting said second electrode in a spaced, insulated manner with respect to said first electrode and to dispose said limited portion of said first electrode in a spaced relationship from said flat surface so that said first electrode may be fully inserted within the tissue and said second electrode be in electrical contact with the surface of the tissue, whereby a relatively intense electrical field is established through the tissue between said exposed portion of said first electrode and said second electrode.

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