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Implantable system with improved RF tolerance

  • US 8,670,839 B2
  • Filed: 12/12/2012
  • Issued: 03/11/2014
  • Est. Priority Date: 12/12/2011
  • Status: Active Grant
First Claim
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1. An implantable lead, comprising:

  • a lead body having a proximal end and a distal end;

    a plurality of electrodes disposed along the distal end of the lead body;

    a plurality of terminal contacts disposed along the proximal end of the lead body;

    a plurality of stimulation conductors extending along the lead body and electrically coupling the plurality of electrodes to the plurality of terminal contacts;

    at least one diversionary terminal contact disposed along the proximal end of the lead body; and

    at least one diversionary conductor, disposed within the lead body, extending at least partially along the length of the lead body, conductively attached directly and solely to a one of the at least one diversionary terminal contact, and not coupled to any of the electrodes, wherein the at least one diversionary conductor is configured and arranged to capacitively couple to the stimulation conductors and each diversionary conductor is a single wire that presents a lower impedance to RF energy at a preselected MRI frequency than any of the stimulation conductors.

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