Wireless energy transfer for implantable devices

  • US 9,496,719 B2
  • Filed: 09/25/2014
  • Issued: 11/15/2016
  • Est. Priority Date: 09/27/2008
  • Status: Active Grant
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First Claim
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1. A wireless energy transfer system for an implantable medical device comprising:

  • a device resonator configured to be included in the implantable medical device and supply power for a load of the implantable medical device by receiving wirelessly transferred power from a source resonator coupled with a power source;

    temperature sensors positioned to measure temperatures of the device resonator at different locations;

    a tunable component coupled to the device resonator; and

    control circuitry configured and arranged to adjust the tunable component to detune the device resonator in response to measurements from the temperature sensors;

    wherein the device resonator comprises a magnetic material with inhomogeneous flux distribution, and the temperature sensors are positioned to measure localized heating resulting from the inhomogeneous flux distribution or power dissipation in the device resonator.

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