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External Charger for a Medical Implantable Device Using Field Inducing Coils to Improve Coupling

  • US 20110093048A1
  • Filed: 10/15/2009
  • Published: 04/21/2011
  • Est. Priority Date: 10/15/2009
  • Status: Active Grant
First Claim
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1. An external charger for use with an implantable medical device, comprising:

  • a primary coil for producing a first magnetic field for providing power to the implantable medical device;

    a plurality of position determination coils for producing second magnetic fields; and

    an alignment sensing circuit for determining an alignment of the primary coil relative to the implantable medical device, wherein the determination is based on electrical measurements taken from the plurality of position determination coils.

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