Patent ID: 7738970
Filing Date: 2010-06-15
Classification: A61N

Abstract:
1. A medical electrical lead, comprising: an outer sleeve formed of a first polymer material, the outer sleeve having a proximal end and a distal end; an electrical conductor situated relative the outer sleeve and extending between the proximal and distal ends of the outer sleeve, the electrical conductor comprising a coil conductor; at least one electrode electrically coupled to the electrical conductor; a first load bearing sleeve extending between the proximal and distal ends of the outer sleeve and situated within a longitudinally extending cavity of the coil conductor, the first load bearing sleeve formed of a second polymer material different from the first polymer material; and a second load bearing sleeve formed of a third polymer material different from the first material and situated between the outer sleeve and the coil conductor, the first and second load bearing sleeves offering resistance to axial loading forces applied to the lead, each of the second polymer material and the third polymer material having tensile strength greater than that of the first polymer material, and the first polymer material having tensile elongation greater than that of each of the second polymer material and the third polymer material.