In one embodiment, an implantable lead for electrical stimulation of a patient, comprises: a bidirection frequency dependent current limiter (BFDCL) circuit that limits a magnitude of current that can flow through the at least one conductor from the at least one terminal to the at least one electrode,...http://www.google.de/patents/US7734354?utm_source=gb-gplus-sharePatent US7734354 - Stimulation lead, stimulation system, and method for limiting MRI induced current in a stimulation lead
