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Systems and methods for making and using electrical stimulation systems with improved RF compatibility

  • US 8,694,120 B2
  • Filed: 02/14/2012
  • Issued: 04/08/2014
  • Est. Priority Date: 02/17/2011
  • Status: Active Grant
First Claim
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1. An implantable control module for an electrical stimulation system, the control module comprising:

  • an electronic subassembly disposed in a sealed housing, the electronic subassembly comprising a pulse generator, wherein at least a portion of the housing is formed from a conductive material;

    a connector configured and arranged for receiving a lead or lead extension, the connector disposed outside the sealed housing, wherein the connector comprises a plurality of connector contacts;

    a plurality of feedthrough pins extending through the sealed housing, each of the plurality of feedthrough pins being electrically coupled to a different one of the connector contacts;

    a plurality of conductive pathways disposed in the housing, each of the plurality of conductive pathways electrically coupling a different one of the plurality of feedthrough pins to the electronic subassembly;

    a ground line electrically coupling the electronic subassembly to a ground pin that, in turn, is electrically coupled to a conductive portion of the housing; and

    a capacitive flex circuit disposed in the housing, the capacitive flex circuit comprising a multi-layered flexible substrate comprising a top layer, a bottom layer, and a dielectric layer disposed between the top layer and the bottom layer, wherein the top layer comprises a plurality of first conductive traces electrically coupling the plurality of feedthrough pins to the plurality of conductive pathways, and wherein the bottom layer comprises a plurality of second conductive traces electrically coupling the plurality of first conductive traces to the ground pin.

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