Patent ID: 7715923

Claim:
An electrode for an implantable medical device, the electrode comprising: a) an electrical contact having an electrical contact sidewall extending from an electrical contact upper face to an electrical contact lower face, wherein the electrical contact has an opening extending from the electrical contact lower face toward the upper face; b) at least one electrical conductor extending from a proximal end connectable to the medical device to a distal portion having a helical shape forming a lumen; c) a mandrel comprising a sidewall extending from a distal mandrel portion to a proximal mandrel portion comprising a tapered nose that extends downwardly and inwardly along a longitudinal axis thereof to a proximal mandrel end received in the lumen at the distal portion of the at least one electrical conductor; and d) wherein the distal mandrel portion is received in the opening in the electrical contact and wherein the lumen of the at least one electrical conductor is absent from the distal mandrel portion received in the contact opening.