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Body-implantable lead

  • US 3,974,834 A
  • Filed: 04/23/1975
  • Issued: 08/17/1976
  • Est. Priority Date: 04/23/1975
  • Status: Expired due to Term
First Claim
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1. A body-implantable, intravascular lead adapted to be connected at its proximal end to a source of electrical energy and permanently secured at its distal end through the endothelial tissue of a living animal body for electrical stimulation thereof and for detecting electrical signals comprising:

  • electrically conductive lead means for insertion in and guidance through a body vessel to a desired location and position inside an organ of a living animal body, the lead means having a cross-section which will fit within a body vessel;

    electrode means affixed to the distal end of said lead means and adapted to supply electrical impulses to tissue at a desired location inside the living animal body, said electrode means including a tissue piercing portion and further including separate tissue engaging means for allowing said electrode means to be firmly and permanently secured through the endothelial tissue at the desired location;

    material means substantially inert to body fluids and tissue encasing said lead means and a portion of said electrode means for sealing them from living animal body fluids and tissue; and

    sleeve means attached to said distal end of said lead means for shrouding said tissue piercing portion and said tissue engaging means thereby allowing the insertion and guidance through a body vessel of said lead means while preventing injury to said body vessel by said tissue piercing portion and for retracting upon contact with endothelial tissue from said tissue piercing portion and said tissue engaging means for allowing said electrode means to be firmly lodged in and secured through the endothelial tissue.

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