Patent ID: 8401669

Claim:
A lead assembly comprising: a lead body, defined in part by a longitudinal axis, including elongate tubing extending from a first end portion to a second end portion and having an intermediate portion therebetween; at least one electrode coil disposed along the lead body; the at least one electrode coil having an outer surface oriented away from the longitudinal axis, and at least one treated portion, the at least one treated portion including at least one laser weld portion formed between consecutive windings on the coil outer surface; at least one coating of fibrosis limiting material along the at least one electrode coil, the at least one electrode coil defined in part by the longitudinal axis; the fibrosis limiting material defined in part by an inner diameter, the fibrosis limiting material having at least one or more first portions and one or more second portions, the second portion includes one or more selectively modified portions; and the fibrosis limiting material is directly attached to the laser welded portion and the outer surface of at least one electrode coil, the at least one laser weld portion forms a surface for promoting adhesion of the fibrosis limiting material to the at least one outer surface of the electrode coil, and the one or more selectively modified portions are coupled with at least one of the at least one treated portion.