Patent ID: 7412290

Claim:
A permanently implantable intravenous lead capable of pacing the heart, comprising: a permanently implantable elongated, flexible body member made of an electrically insulative material, said body member having a proximal end portion and a distal end portion; a lumen extending through the body member from the proximal end portion to the distal end portion of the body member; a conductive member extending through the body member from the proximal end portion toward the distal end portion; and a sealing assembly located at a distal end portion of the lead, the sealing assembly including a seal coupling element having a proximal portion, a distal portion, and a passage coaxial with the lumen and extending through the seal coupling element, the passage and lumen configured to allow for implantation of the lead over a guidewire, and the distal portion of the seal coupling element having a maximum outer diameter greater than a maximum outer diameter of the proximal portion, and a sealing element coupled to the distal portion of the seal coupling element.