Patent ID: 8219209

Claim:
A medical lead comprising: a multilumen tube having a distal end and a proximal end and a wall, the multilumen tube comprising a flexible material, the wall defining at least three lumens along a first longitudinal portion of the tube and less than three lumens along a second longitudinal portion of the tube, wherein a first, continuous lumen extends through both the first and second portions, wherein the wall is substantially continuous through both the first and second longitudinal portions; a proximal connector disposed at the proximal end of the medical lead, the proximal connector adapted to connect the lead to an implantable medical device; a fixation member disposed on a distal end of the lead body, the fixation member having a fixation helix that is adapted to fix the lead at a site within a patient; a conductor member disposed in the continuous lumen and electrically coupling the proximal connector to the fixation member; and a distal tip portion, the fixation member at least partially disposed within the distal tip portion; wherein the second portion of the multilumen tube is stretched to fit over a portion of the distal tip portion, providing a fluid-tight passageway extending through the first and second portions of the multilumen tube and into the distal tip portion.