Cardiac lead with composite insulating structure

摘要

A lead for implantation in a human body exhibits improved combined biodegradation, blood surface compatibility, wear and flexibility characteristics. The lead includes at least one electrode and at least one connector connecting the electrode to a connector at the proximal end of the lead. An outer insulation surrounds the at least one conductor, and includes a first insulation formed of silicone encircling the at least one conductor, and a second insulation formed from polyurethane encircling the silicone rubber insulation.