A SHIELDED IMPLANTABLE MEDICAL LEAD WITH GUARDED TERMINATION

摘要

A method of shielding an implantable medical lead, comprising providing an inner layer of insulation establishing an axial dimension, the inner layer surrounding at one conductive filar; providing a shield over the inner layer of insulation, the shield comprising at least six metal wires forming a braid about the inner layer of insulation with at least three of the at least six wires being coiled in the first direction and at least three of the at least six wires being coiled in the second direction, the metal wires each having a dimension that faces outward from the inner layer within a range from 0.5 to 2.5 mils (0.013 - 0.065 mm), providing an outer layer of insulation over the shield with the outer layer of insulation being adhered to the inner layer of insulation through openings within the braid formed by the metal wires; providing at least one proximal electrode on a proximal end of the inner layer of insulation and at least one distal electrode on distal end of the inner layer of insulation, with the at least one conductive filar establishing an electrical pathway between the at least one proximal electrode and the at least one distal electrode.