Coronary sinus lead having expandable matrix anchor
First Claim
1. An electrical lead for applying cardiac stimulating pulses to the left ventricle of a patient'"'"'s heart, comprising:
- (a) an elongated, flexible conductor contained within an insulating elastomeric jacket, the conductor terminating at an electrode proximate a distal end thereof and at an electrical terminal at a proximal end thereof; and
(b) a fixation member located on the lead proximal of the electrode for restraining displacement of the electrode, the fixation member comprising a water-permeable polymeric material incorporating an osmotically active agent that swells upon absorbing body fluids therein.
1 Assignment
0 Petitions
Accused Products
Abstract
An intravenous lead for use with a cardiac device for implantation in the coronary venous system of the heart includes a lead body that is adapted to be routed through the vascular system into the coronary sinus with the distal end portion of the lead placed in the great cardiac vein or branch vein. The lead body includes a fixation member disposed just proximal of its tip. The fixation member comprises a radially expandable polymeric matrix that incorporates an osmotic agent so that when placed in a aqueous medium it will swell. Thus, when placed in a cardiac vein, the swelling of the fixation member will anchor the lead against longitudinal displacement due to body motion, blood flow and the beating action of the heart.
92 Citations
9 Claims
-
1. An electrical lead for applying cardiac stimulating pulses to the left ventricle of a patient'"'"'s heart, comprising:
-
(a) an elongated, flexible conductor contained within an insulating elastomeric jacket, the conductor terminating at an electrode proximate a distal end thereof and at an electrical terminal at a proximal end thereof; and (b) a fixation member located on the lead proximal of the electrode for restraining displacement of the electrode, the fixation member comprising a water-permeable polymeric material incorporating an osmotically active agent that swells upon absorbing body fluids therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification