Secure long-range telemetry for implantable medical device

  • US 20040260363A1
  • Filed: 06/23/2003
  • Published: 12/23/2004
  • Est. Priority Date: 06/23/2003
  • Status: Active Grant
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First Claim
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1. A method for enabling secure communications between an implantable medical device (IMD) and an external device (ED) over a telemetry channel, comprising:

  • implementing a telemetry interlock which limits any communications between the ED and the IMD over the telemetry channel;

    releasing the telemetry interlock by transmitting an enable command to the IMD via a short-range communications channel requiring physical proximity to the IMD;

    authenticating the IMD to the ED when the ED receives a message from the IMD evidencing use of an encryption key expected to be possessed by the IMD;

    authenticating the ED to the IMD when the IMD receives a message from the ED evidencing use of an encryption key expected to be possessed by the ED; and

    , allowing a data communications session between the IMD and ED over the telemetry channel to occur only after the IMD and ED have been authenticated to one other.

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