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Charger alignment indicator with adjustable threshold

  • US 8,598,841 B2
  • Filed: 09/28/2011
  • Issued: 12/03/2013
  • Est. Priority Date: 05/14/2007
  • Status: Active Grant
First Claim
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1. An external charger for an implantable medical device, comprising:

  • a source of electrical power;

    an alternating current (AC) coil configured for transcutaneously conveying electrical energy from the electrical power source to charge the implanted medical device;

    a charge strength indicator configured for generating a user-discernible signal at a threshold; and

    a processor configured for increasing the threshold if the medical device is implanted relatively deep, and decreasing the threshold if the medical device is implanted relatively shallow.

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