Patent ID: 6988007
Filing Date: 2006-01-17
Classification: A61N

Abstract:
1. An implantable cardiac stimulation lead suitable for single-pass placement of electrodes into electrical contact with two chambers of a patient's heart, the lead comprising: a first lead body having a first proximal connector, a first tip electrode located at a distal end thereof, and a first conductor electrically connected between the first tip electrode and the first proximal connector; and a second lead body having a second proximal connector, a second tip electrode at a distal end of the second lead body, and a second conductor electrically connected between the second tip electrode and the second proximal connector, the second lead body having an internal lumen dimensioned such that the first lead body slidably fits within the internal lumen and is extendable from the second lead body at an exit port, the exit port disposed at a point spaced from and proximally adjacent to the distal end of the second lead body to permit the exit port, the first tip electrode, and the second tip electrode to be positioned in the coronary sinus region; wherein the sliding of the first lead body relative to the second lead body enables the first tip electrode to have a varying distance from the second tip electrode and enables the first lead body to extend into the coronary sinus region of the patient's heart to place the first tip electrode into electrical contact with the left ventricle and the second tip electrode into electrical contact with the atria; and wherein the second tip electrode has a continuous surface without an opening.