Transvenously implantable lead
First Claim
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1. A body-implantable lead of materials substantially inert to body fluids and tissue comprising:
- a length of electrical conductor having proximal and distal ends;
an electrode connected to the distal end of said conductor, said electrode having tissue engaging means for securely engaging said electrode in contact with body tissue;
sheath means having proximal and distal ends for loosely receiving and insulating said conductor from body tissue, said conductor being adapted to be axially advanced from its proximal end in and relative to said sheath means; and
electrode head means attached to the distal end of said sheath means for receiving and isolating said electrode from body fluids and tissue, said electrode head means further comprising means for loosely engaging at least a portion of said electrode and for allowing the axial advancement of said electrode a predetermined distance from said sheath means upon advancement of said conductor in and relative to said sheath means.
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Abstract
A body-implantable, intravascular lead affixed with a pin or pins at its proximal end adapted to be connected to a cardiac pacemaker pulse generator and with an electrode or electrodes at its distal end adapted to be securely and permanently attached to a body organ through endothelial tissue. An electrode in spiral shaped form of a rigid, electrically conductive helix with a sharp tip at the distal end of the lead is adapted to be screwed through endothelial tissue into the body organ by means of a rotational motion applied to the conductor at the proximal end of the lead.
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Citations
21 Claims
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1. A body-implantable lead of materials substantially inert to body fluids and tissue comprising:
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a length of electrical conductor having proximal and distal ends; an electrode connected to the distal end of said conductor, said electrode having tissue engaging means for securely engaging said electrode in contact with body tissue; sheath means having proximal and distal ends for loosely receiving and insulating said conductor from body tissue, said conductor being adapted to be axially advanced from its proximal end in and relative to said sheath means; and electrode head means attached to the distal end of said sheath means for receiving and isolating said electrode from body fluids and tissue, said electrode head means further comprising means for loosely engaging at least a portion of said electrode and for allowing the axial advancement of said electrode a predetermined distance from said sheath means upon advancement of said conductor in and relative to said sheath means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification