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Systems and Methods for Selecting Components for Use in RF Filters Within Implantable Medical Device Leads Based on Inductance, Parasitic Capacitance and Parasitic Resistance

  • US 20100138192A1
  • Filed: 12/01/2008
  • Published: 06/03/2010
  • Est. Priority Date: 12/01/2008
  • Status: Abandoned Application
First Claim
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19. A lead for use with an implantable medical device subject to radio-frequency (RF) fields, the lead comprising:

  • an electrode;

    a conductor connected to the electrode; and

    an inductive filtering element connected along the conductor, wherein the filtering element includes an inductor achieving a target impedance at a particular frequency to be filtered, the inductor having an inductance and a parasitic capacitance, and wherein the inductance and parasitic capacitance are sufficient to achieve a target impedance value at the particular frequency despite variations in the inductance and parasitic capacitance due to device tolerance.

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