Patent ID: 7930038

Claim:
A lead assembly comprising: an implantable lead body including a lumen; a conductor extending through the lumen in the lead body; and a helical electrode including a elongated, conductive tubular body having a continuous conductive surface extending between a first end and a second end and a lumen extending between the first and second ends defining an inner surface of the elongated, conductive tubular body, the elongated, conductive tubular body at least partially wound around an exterior surface of the implantable lead body, the helical electrode expandable from a first shape to a second shape, the conductor extending from the lead body into the first end of the elongated, conductive tubular body and electrically coupled to the elongated conductive tubular body such that the electrode is adapted to transmit one or more electrical signals between the exposed outer conductive surface of the tube and adjacent bodily tissue.