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Tank filters placed in series with the lead wires or circuits of active medical devices to enhance MRI compatibility

  • US 8,180,448 B2
  • Filed: 03/29/2011
  • Issued: 05/15/2012
  • Est. Priority Date: 06/08/2006
  • Status: Expired due to Fees
First Claim
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1. An electrode assembly for an implantable active medical device, comprising:

  • an active fixation distal tip electrode including a helix coil insertable into biological tissue; and

    a tank filter electrically connected in series with the helix coil and to a lead of the active medical device, the tank filter having inductance in parallel with capacitance and an overall circuit Q such that the tank filter attenuates current flow over a range of selected frequencies.

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