Patent ID: 6748277
Filing Date: 2004-06-08
Classification: A61N

Abstract:
An implantable endocardial lead extending between proximal and distal ends for use with a cardiac stimulation device comprising:an elongated lead body of flexible resilient material comprising: a first elongated tubular component having a first face and a first longitudinally extending channel forming a partial lumen in the first face; a second elongated tubular component having a second face opposite the first face and a second longitudinally extending channel forming a partial lumen in the second face; the first and second elongated tubular components being integrated by contiguously uniting the first and second faces to form a planar interface, the first and second partial lumina being in overlying relationship resulting in a full lumen within the elongated lead body; wherein the elongated lead body has a peripheral outer surface with a pair of longitudinally spaced annular grooves therein and a second pair of longitudinally spaced annular grooves therein, a first length of the lead body between the first pair of annular grooves being smaller than a second length of the lead body between the second pair of annular grooves; and a ring received in each of the annular grooves to bias together the first and second faces of the first and second elongated tubular components; wherein the flexibility of the elongated lead body is greater along the second length than along the first length.