Patent ID: 7983764

Claim:
A lead assembly, comprising: a lead body extending from a lead proximal end portion to a lead distal end portion, the lead body including a first conductor and a second conductor disposed therein, the first conductor is co-radial with the second conductor; an extendable and retractable active fixation mechanism disposed at the lead distal end portion; a lead lumen extending within the lead body from the lead proximal end portion to at least an active fixation mechanism proximal end, the lumen at least partially formed within the outer diameter of the first and second co-radial conductors; a driver removably and rotatably seatable within the lead lumen, the driver including a stylet or guidewire receiving lumen therein; and the active fixation mechanism actuatable by rotation of the driver; wherein the driver is capable of being removed from the lead assembly after actuation of the active fixation mechanism.