Patent ID: 6684109
Filing Date: 2004-01-27
Classification: A61N

Abstract:
A bipolar endocardial defibrillation lead comprising:a) an elongated insulative lead body having opposed proximal and distal end portions, and having an interior lumen extending therethrough; b) a shock electrode having an electrically active central annular portion disposed at the distal end of the lead body and a plurality of electrically active defibrillation arms depending from electrically connected to the central annular portion for delivering electrical energy to cardiac tissue, wherein the arms are configured for movement from an axially extended position located outside the interior lumen of the lead body to a radially extended position relative to the central annular portion of the shock electrode; c) a ring electrode operatively associated with the lead body and spaced proximally from the shock electrode; d) a fixation screw disposed axially within the central annular portion of the shock electrode for securing the distal end portion of the lead body to cardiac tissue; e) a connector assembly operatively associated with the proximal end portion of the lead body to facilitate electrical connection with an automated energy generating device; and f) a coiled multifilar conductor assembly extending through the lead body to electrically join the shock electrode and the ring electrode to the connector assembly.