Patent ID: 6141594
Filing Date: 2000-10-31
Classification: A61N

Abstract:
A bifurcated lead adapted for implantation in, on or about a heart, the lead comprising:a main lead body adapted to carry signals to and from the heart, the main lead body extending from a proximal end to a distal end, the distal end of the main lead body having a first electrode leg and a second electrode leg;the first electrode leg including a first electrode assembly comprising a bipolar electrode having a first electrode and a second electrode, the first electrode assembly being adapted to be disposed within a first chamber of the heart;the second electrode leg including a second electrode assembly, the second electrode assembly comprising a bipolar electrode having a third electrode and a fourth electrode, the second electrode assembly being adapted to be disposed within a second chamber of the heart; andwherein at least the first electrode assembly or the second electrode assembly includes a retractable active fixation device coupled with a mesh screen, the mesh screen coupled with the fixation device such that the fixation device and the mesh screen advance together as the active fixation device is advanced relative to the main lead body towards a portion of the heart wall, where the mesh screen is adapted for contacting a portion of the heart.