Patent ID: 8601672

Claim:
A method of fabricating a stimulation lead for stimulation of tissue of a patient, wherein the stimulation lead is adapted to reduce tissue heating when present in an MRI system, the method comprising: helically wrapping a plurality of conductors about an axis such that each conductor of the plurality of conductors comprises an inner segment of multiple windings and an outer segment of multiple windings relative to the axis, wherein the outer segment comprises a first winding pitch and the inner segment comprises a second winding pitch, the second winding pitch is less than the first winding pitch, the inner segment of each respective conductor being disposed interior to the outer segments of other conductors of the plurality of conductors, an impedance of each conductor at a MRI pulsed RF frequency of the plurality of conductors substantially reduces MRI-induced current when the stimulation lead is present in the MRI system; forming a lead body with the helically wrapped plurality of conductors; providing a plurality of electrodes that are electrically coupled to the plurality of conductors; and providing a plurality of terminals that are electrically coupled to the plurality of conductors.