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External resonance matching between an implanted device and an external device

  • US 9,526,906 B2
  • Filed: 07/26/2013
  • Issued: 12/27/2016
  • Est. Priority Date: 07/26/2012
  • Status: Active Grant
First Claim
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1. A device for treating sleep apnea from a location external to a body of a subject by wirelessly powering an implant in the body of the subject, and wherein the implant includes a secondary antenna for wirelessly receiving energy, the device comprising:

  • a housing configured to be located external to the body of the subject at a location between a neck and chin of the subject, the housing including therein;

    a primary antenna configured to transmit a modulation signal to the secondary antenna, wherein the modulation signal causes stimulation of a nerve of the subject to treat sleep apnea;

    a circuit electrically connected to the primary antenna; and

    at least one processor electrically connected to the primary antenna and the circuit, the at least one processor configured to;

    determine a resonant frequency mismatch between a first resonant frequency associated with the primary antenna and the circuit and a second resonant frequency associated with the secondary antenna associated with the implant, when the implant is implanted in the body of the subject; and

    apply an adjustment to at least one component of the circuit to cause a change in the first resonant frequency associated with the primary antenna and the circuit and a reduction in the resonant frequency mismatch, wherein the adjustment is automatically determined by the at least one processor based on feedback from the secondary antenna associated with the implant.

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