Transmission of information from an implanted medical device

  • US 6,772,011 B2
  • Filed: 08/20/2002
  • Issued: 08/03/2004
  • Est. Priority Date: 08/20/2002
  • Status: Active Grant
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First Claim
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1. An implantable device requiring electrical power from an external power source for operation, comprising:

  • an LC tank circuit that receives power from the external power source;

    a load-generating device to which the received power is delivered; and

    feedback circuitry that senses a load voltage level of the power delivered to the load-generating device, produces a pulsed feedback signal indicative of the bad voltage level, and superimposes the feedback signal on the LC tank circuit for communication to the external power source, wherein during a time that the feedback signal is superimposed on the LC tank circuit receipt of power from the external power source is interrupted.

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