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MRI CONDITIONALLY SAFE LEAD WITH LOW-PROFILE MULTI-LAYER CONDUCTOR FOR LONGITUDINAL EXPANSION

  • US 20110160828A1
  • Filed: 11/05/2010
  • Published: 06/30/2011
  • Est. Priority Date: 12/31/2009
  • Status: Active Grant
First Claim
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1. An implantable electrical lead, comprising:

  • a flexible body having a proximal region including a proximal end, a distal region, and a longitudinal body lumen extending from the proximal end through the distal region;

    a connector assembly configured to mechanically and electrically connect the implantable electrical lead to an implantable pulse generator;

    an electrode coupled to the flexible body in the distal region; and

    a multi-layer coil conductor extending within the longitudinal body lumen from the connector assembly to at least the electrode, the multi-layer coil conductor including;

    a first coil layer; and

    a second coil layer disposed about the first coil layer, wherein the first and second coil layers are configured such that the multi-layer coil conductor has an axial stiffness substantially equal to an axial stiffness of the lead body adjacent to the multi-layer coil conductor.

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