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METHOD AND APPARATUS FOR SUPPLYING ENERGY TO A MEDICAL DEVICE

  • US 20100222849A1
  • Filed: 10/10/2008
  • Published: 09/02/2010
  • Est. Priority Date: 10/16/2007
  • Status: Active Grant
First Claim
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1. A method of controlling transmission of wireless energy supplied to an electrically operable medical device (100) implanted in a mammal patient, said wireless energy being transmitted by means of a primary coil in an external energy source (104) located outside the patient and received inductively by means of a secondary coil in an internal energy receiver (102) located inside the patient, the internal energy receiver being connected to the medical device for directly or indirectly supplying received energy thereto, wherein feedback control information (S) is transferred from the secondary coil to the primary coil by switching the secondary coil on and off to induce a detectable impedance load variation in the primary coil encoding the feedback control information, where the feedback control information relates to the energy for operating the medical device and is used for controlling the transmission of wireless energy from the external energy source.

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