Patent ID: 7617006
Filing Date: 2009-11-10
Classification: A61N

Abstract:
1. A medical electrical lead for spinal cord stimulation, comprising: a first elongate lead body including a first plurality of conductors isolated from one another and a first plurality of conductive rings longitudinally spaced apart from one another and separated from one another by a first set of insulating members, each conductive ring of the first plurality of conductive rings being electrically coupled to a corresponding conductor of the first plurality of conductors; a second elongate lead body including a second plurality of conductors isolated from one another and a second plurality of conductive rings longitudinally spaced apart from one another and separated from one another by a first set of insulating members, each conductive ring of the second plurality of conductive rings being electrically coupled to a corresponding conductor of the second plurality of conductors; a distal portion surrounding the first and second plurality of conductive rings and coupling the first lead body to the second lead body, the first and second lead bodies extending proximally from the distal portion; a first column of electrode surfaces being exposed along the distal portion, each of the electrode surfaces of the first column being electrically coupled to a corresponding conductor of the first plurality of conductors, via a weld to a corresponding conductive ring of the first plurality of conductive rings, and each of the electrode surfaces of the first column extending laterally away from the first lead body; and a second column of electrode surfaces being exposed along the distal portion and extending alongside, and spaced apart from, the first column, each of the electrode surfaces of the second column being electrically coupled to a corresponding conductor of the second plurality of conductors, via a weld to a corresponding conductive ring of the second plurality of conductive rings, and each of the electrode surfaces of the second column extending laterally away from the second lead body.