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MRI detector for implantable medical device

  • US 8,335,563 B2
  • Filed: 03/24/2009
  • Issued: 12/18/2012
  • Est. Priority Date: 02/16/2006
  • Status: Active Grant
First Claim
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1. A device, comprising:

  • an implantable medical device, further comprising;

    an inductive switching regulator having an inductor with a ferromagnetic core;

    wherein the inductive switching regulator alternately stores and discharges energy in the inductor in a power conversion cycle;

    a core saturation detector for detecting saturation in the inductor core of the inductive switching regulator indicating the presence of a magnetic field by monitoring the power conversion cycle; and

    ,circuitry for producing a core saturation signal when core saturation is detected.

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