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MRI compatible co-radially wound lead assembly

  • US 8,843,212 B2
  • Filed: 10/25/2013
  • Issued: 09/23/2014
  • Est. Priority Date: 03/04/2009
  • Status: Active Grant
First Claim
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1. A lead assembly comprising:

  • an elongate body having a proximal end and a distal end, said elongate body defining a lumen therewithin, the distal end arranged and configured to contact tissue and the proximal end operably coupled to an electronic control;

    at least a first electrode and at least a second electrode located on the elongate body;

    at least a first length of electrode wire and at least a second length of electrode wire co-radially wound within said elongate body;

    a first resonant LC filter formed from said at least a first length of electrode wire, said first resonant LC filter stacked physically in a plurality of layers and a second resonant LC filter formed from said at least a second length of electrode wire, said second resonant LC filter stacked physically in a plurality of layers, said at least a first length of electrode wire in electrical communication with said first electrode and said at least a second length of electrode wire in electrical communication with said second electrode, said first resonant LC filter positioned proximate said first electrode and said second resonant LC filter positioned proximate said second electrode,wherein said co-radially wound first and second electrode wires form a non-resonant filter having a substantially uniformly distributed inductance along the length of said non-resonant filter.

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