Patent ID: 8244346

Claim:
A medical device, comprising: a pulse generator; a lead electrically coupled to the pulse generator, the lead including an inner electrode conductor wire helically disposed along all or a portion of a length of the lead, the inner electrode conductor wire having a hollowed, multifilar configuration including six or more co-radially wound wire filars, each filar of the inner electrode conductor wire comprising a first material having a resistance; an outer electrode conductor wire helically disposed about and spaced apart from the inner electrode conductor wire along all or a portion of the length of the lead, the outer electrode conductor wire having a single or double filar configuration, each filar of the outer electrode conductor wire comprising a second material having a resistance less than the resistance of the first material; at least one insulation layer disposed radially about the inner electrode conductor wire; and wherein the outer electrode conductor wire is configured to dissipate electromagnetic energy received by the lead during a magnetic resonance imaging procedure.