Secure wireless energy transfer in medical applications

  • US 9,106,203 B2
  • Filed: 11/07/2011
  • Issued: 08/11/2015
  • Est. Priority Date: 09/27/2008
  • Status: Active Grant
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First Claim
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1. A power source capable of wirelessly providing power to at least two wireless receivers, which are each coupled with an electrically powered medical device, the power source comprising:

  • a power supply;

    a source electromagnetic resonator coupled with the power supply;

    power and control circuitry coupled with the source electromagnetic resonator, the power and control circuitry configured to;

    establish a first out-of-band communication channel for information exchange with a first device electromagnetic resonator and a second out-of-band communication channel for information exchange with a second device electromagnetic resonator;

    receive a first in-band communication signal on a first in-band communication channel from the first device electromagnetic resonator and a second in-band communication signal on a second in-band communication channel from the second device electromagnetic resonator;

    use the first in-band communication signal from the first device electromagnetic resonator and the second in-band communication signal from the second device electromagnetic resonator to determine a characteristic of wireless coupling between the source electromagnetic resonator and each of the first and second device electromagnetic resonators based on the information exchanged via a corresponding one of the first and second out-of-band communication channels; and

    select one of the first device electromagnetic resonator and the second device electromagnetic resonator based on the characteristic of wireless coupling to provide resonant, non-radiative wireless power;

    wherein the source electromagnetic resonator provides resonant, non-radiative wireless power to the selected device electromagnetic resonator; and

    wherein each of the first and second out-of-band communication channels comprises a secure communication channel over which the information comprising a verification code is sent, and the verification code is signaled in response through the corresponding one of the first and second in-band communication channels.

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  • 1 Assignment