Patent ID: 8250753
Filing Date: 2012-08-28
Classification: A61N,H01B,Y10T

Abstract:
1. A method of fabricating an electrically active helix for an electrical medical lead comprising: a) forming an elongated helix body precursor having a proximal end and a distal end, the helix body precursor comprising at least one electrically conducting core surrounded by an insulating sheath; b) removing a predetermined length of the insulating sheath such that a portion of a surface of each electrically conductive core between the distal end and the proximal end is exposed; c) applying a continuous electrically conducting, biocompatible coating to the longitudinally-extending surface of the insulating sheath and each exposed surface of each electrically conducting core; d) removing a portion of the biocompatible coating on the insulating sheath to form a biocompatible coating free window surrounding each continuous portion of the surface of each electrically conducting core such that each biocompatible coating on the exposed surface of each electrically conducting core is not in electrical contact with the remaining biocompatible coating on the insulating sheath; and e) forming the helix body precursor into a helix body in which a plurality of helical revolutions are formed between the proximal end and the distal end of the helix body precursor, and wherein each exposed surface of each electrically conducting core faces in a predetermined direction.