Endocardial difibrillation lead with strain-relief coil connection
AssigneeIntermedics, Inc.
InventorsSteven Conger, Stephen L. Goldman
Life of this patent
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Abstract
An implantable endocardial defibrillation lead having a conductor for conducting at least high voltage defibrillation shocks. A coil electrode is connected to an elongated, flexible, electrically non-conductive lead body and is supplied with electrical power for delivering electrical shocks to the heart through a looped cable conductor that extends through the lead body and is associated with a power source. The coil electrode extends proximately from a connection between the conductor and the coil electrode, forming a proximal segment. The proximal segment is preferably at least 5 mm long, more preferably between 7 mm and 10 mm long.
Claims27
An implantable cardiac defibrillation lead comprising:
- an elongated lead body having a proximal and a distal end;
- an electrical connector at said proximal end;
- a first defibrillation electrode near said distal end, and
- an electrical conductor electrically connecting said electrical connector and said electrode, the electrical conductor including a conductive wire having a first end and a second end, said wire being folded into a bend at a point substantially midway along said wire and positioned in said lead body such that said bend is near one end of said lead body and both said first and second ends are near the other end of said lead body, said defibrillation electrode comprising at least one wire having a plurality of coils wrapped around a portion of said lead body, said electrode having a distal end and a proximal end, and a connection between two of the conductive wire of said electrical conductor and said electrode, said connection being between said distal end and said proximal end of said coiled electrode and spaced distally away from said proximal end of said electrode.
An implantable cardiac defibrillation system comprising
- a hermetically sealed can containing
- a power source;
- a control circuit connected to said power source;
- a sense circuit capable of detecting the electrical condition of the heart;
- a stimulus generator capable of producing an electrical output to stimulate the heart as controlled by said control circuit;
- and
- a lead connected to said generator, said lead comprising
- an elongated lead body having a proximal and a distal end;
- an electrical connector at said proximal end;
- a first defibrillation electrode near said distal end, and
- an electrical conductor electrically connecting said electrical connector and said electrode, the electrical conductor including a conductive wire having a first end and a second end, said wire being folded into a bend at a point substantially midway along said wire and positioned in said lead body such that said bend is near one end of said lead body and both said first and second ends are near the other end of said lead body, said defibrillation electrode comprising at least one wire having a plurality of coils wrapped around a portion of said lead body, said electrode having a distal end and a proximal end, and a connection between two of the conductive wire of said electrical conductor and said electrode, said connection being between said distal end and said proximal end of said coiled electrode and spaced distally away from said proximal end of said electrode.
Dependencies are inferred from the claim text.