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Retrieval of information from an implantable medical device

  • US 9,636,509 B2
  • Filed: 01/27/2012
  • Issued: 05/02/2017
  • Est. Priority Date: 01/27/2012
  • Status: Active Grant
First Claim
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1. An implantable medical system, comprising:

  • an interrogating device for sending a communication signal including a command and energy; and

    an implantable medical device, having;

    an energy harvesting circuit for remotely obtaining energy from the communication signal transmitted provided by the interrogating device;

    a memory module having a non-volatile memory;

    a memory access unit powered by the energy harvesting circuit to access and transfer information from the non-volatile memory to the interrogating device in response to the command contained in the communication signal from the interrogating device;

    an internal energy source, wherein the memory access unit is powered by the energy harvesting circuit subsequent to a depletion of energy stored by the internal energy source to access and transfer the information;

    a processor configured to provide an indication of a battery level of the internal energy source and perform storage of the information in a memory location of the non-volatile memory when the internal energy source reaches a predetermined portion of an initial battery level; and

    an external programmer configured to retrieve the information from the implantable medical device via a first frequency band prior during a lifetime of the internal energy source,wherein the interrogating device sends the communication signal utilizing a second frequency band different than the first frequency band subsequent to depletion of the energy stored by the internal energy source, andthe memory access unit remaining in a powered down mode during the lifetime of the internal energy source until the interrogation device sends the communication signal.

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