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Signaling error conditions in an implantable medical device system using simple charging coil telemetry

  • US 10,105,543 B2
  • Filed: 06/14/2016
  • Issued: 10/23/2018
  • Est. Priority Date: 01/15/2009
  • Status: Active Grant
First Claim
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1. An implantable medical device, comprising:

  • a charging coil configured to receive power from an external charger; and

    error modulator circuitry configured to determine whether one of a plurality of errors is present in the implantable medical device and configured to modulate an impedance of the charging coil to communicate an indication of a determined error to the external charger,wherein the indication of each one of the plurality of errors is communicated by modulating an impedance of the charging coil at a unique frequency.

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