Patent ID: 8170691

Claim:
An implantable medical lead comprising: a lead body adapted for in vivo implantation in a living subject, said lead body comprising a proximal end configured for electrical and mechanical connection to a therapy device, and a distal end configured for in vivo interaction with tissue; a header at said distal end, said header being comprised of a biostable and biocompatible polymer, said header comprising a first tubular portion, a helical fixation element located within said first tubular portion and being extendable from said distal end to interact with said tissue, and a radiopaque ring; said header further comprising a second tubular portion at said distal end located coaxially with respect to said first tubular portion, said second tubular portion having a second tubular portion distal end and a free proximal end, said second tubular portion being connected to said first tubular portion at said second tubular portion distal end to form a circumferential pocket; said header having a header proximal end and said first tubular portion extending from said header proximal end at least to said second tubular portion distal end; and said radiopaque ring extending around said first tubular portion and being received in said circumferential pocket.