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Implantable medical device lead including a unifilar coiled cable

  • US 8,825,179 B2
  • Filed: 04/19/2013
  • Issued: 09/02/2014
  • Est. Priority Date: 04/20/2012
  • Status: Active Grant
First Claim
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1. A medical device lead comprising:

  • a flexible body formed from a polymeric material, the flexible body having a proximal region with a proximal end, a distal region with a distal end, and a plurality of lumens extending from the proximal region to the distal region, the plurality of lumens including a first lumen and a second lumen that is smaller in diameter than the first lumen;

    a connector coupled to the proximal end of the flexible body of the lead to electrically and mechanically connect the lead to an implantable pulse generator;

    a first electrode in the distal region of the flexible body;

    a second electrode in the distal region of the flexible body, the second electrode comprising a ring electrode;

    a coiled conductor extending within the first lumen from the proximal region to the distal region, the coiled conductor electrically connected to the connector and to the first electrode; and

    a cable conductor having a proximal end electrically coupled to the connector and a distal end electrically coupled to the ring electrode, the cable conductor consisting of a single helically coiled filar including a plurality of co-radial turns, the single helically coiled filar extending within the second lumen from the proximal region to the distal region, wherein the outer diameter of the coiling of each single helically coiled filar is less than about 0.020 inch (0.508 mm) and is less than the outer diameter of coiling of the coiled conductor.

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