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Medical lead coil conductor with spacer element

  • US 8,688,236 B2
  • Filed: 12/13/2011
  • Issued: 04/01/2014
  • Est. Priority Date: 05/09/2008
  • Status: Active Grant
First Claim
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1. A medical electrical lead, comprising:

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

    an electrode coupled to the distal section of the lead body;

    at least one helically coiled electrical conductor disposed within an interior lumen of the lead body and electrically coupled to the electrode, the at least one helically coiled electrical conductor including a plurality of turns disposed about a longitudinal axis of the lead body and extending from the proximal section to the distal section of the lead body;

    at least one helically coiled spacer element electrically isolated from the electrode, the at least one helically coiled spacer element including a plurality of turns interstitially disposed between adjacent turns of the at least one helically coiled electrical conductor to form a coil assembly comprising the at least one helically coiled electrical conductor and the at least one helically coiled spacer element; and

    wherein the at least one helically coiled electrical conductor and the at least one helically coiled spacer element are wound together to have a first portion of the coil assembly that is close-wound and a second portion of the coil assembly that is open-wound.

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