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CONCENTRIC PRIMARY COILS FOR INDUCTIVELY CHARGING AN IMPLANTABLE MEDICAL DEVICE, EXTERNAL POWER SOURCE AND METHOD

  • US 20090276016A1
  • Filed: 04/30/2008
  • Published: 11/05/2009
  • Est. Priority Date: 04/30/2008
  • Status: Active Grant
First Claim
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1. An external power source for an implantable medical device having therapeutic componentry and a secondary coil operatively coupled to said therapeutic componentry, comprising:

  • a plurality of concentric primary charging coils, each capable of transcutaneously inductively energizing said secondary coil when externally placed in proximity of said secondary coil; and

    drive circuitry selectively coupled to each of said plurality of concentric primary coils for energizing a selected one of said plurality of concentric primary coils.

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