Patent ID: 6671562
Filing Date: 2003-12-30
Classification: A61N

Abstract:
A high impedance bipolar cardiac lead comprising:a) an elongated lead body having opposed proximal and distal ends; b) a ring electrode operatively associated with the distal end of the lead body and defining an inner peripheral surface; c) a tip electrode coaxially disposed within the ring electrode and defining an (outer peripheral surface such that an annular gap is formed between the inner peripheral surface of the ring electrode and the outer peripheral surface of the tip electrode; d) a drug eluting insulating member disposed within the annular gap formed between the outer peripheral surface of the tip electrode and the inner peripheral surface of the ring electrode; e) a connector operatively associated with the proximal end of the lead body and electrically connected to the ring and tip electrodes; and f) conductor means extending through the lead body for delivering energy from the connector to the ring and tip electrodes to stimulate cardiac tissue.