Patent ID: 8396569

Claim:
An apparatus comprising: an elongate body extending from a proximal end to a distal end; a conductor disposed within the elongate body; an electrode coupled to the elongate body, wherein the electrode is in electrical communication with the conductor; a push tube extending along at least a portion of the elongate body; and a distal tip coupled to the elongate body substantially adjacent to the distal end, wherein the distal tip is sized and shaped to couple with a push tube distal end and at least a portion of an outer perimeter of the distal tip includes a seat sized and shaped to receive a push tube distal end, wherein the seat includes a socket sized and shaped to grasp and immobilize the push tube distal end, and wherein the seat includes a deformable coil disposed within the socket, and the deformable coil has an inner perimeter smaller than the outer perimeter of the push tube.