Patent ID: 8498721

Claim:
An implantable medical lead for implantation within a body vessel, comprising: a lead body having a proximal end and an open distal end, and including a pre-formed biased portion between the proximal and distal ends, and an-unbiased portion extending distally from the pre-formed biased portion, wherein the pre-formed biased portion is adapted to fixate the lead against an interior wall of a body vessel upon implantation and includes a three-dimensional bias having a helical shape; a connector configured for coupling the lead to an implantable pulse generator; a plurality of electrodes on the lead body in the pre-formed biased portion; an electrode on the lead body in the un-biased portion; a first conductor extending within the lead body from the proximal end toward the distal end and coupled to the electrode in the un-biased portion; a plurality of second conductors extending within the lead body from the proximal end toward the distal end, each of the second conductors coupled to a respective one of the plurality of electrodes in the pre-formed biased portion; and an open lumen extending longitudinally through the distal end of the lead body.