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FREQUENCY-AGILE SYSTEM FOR TELEMETRY WITH IMPLANTABLE DEVICE

  • US 20080055070A1
  • Filed: 09/01/2006
  • Published: 03/06/2008
  • Est. Priority Date: 09/01/2006
  • Status: Active Grant
First Claim
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1. A telemetry system for enabling radio-frequency (RF) communications between an implantable medical device and an external device over a wireless medium, comprising:

  • an antenna, an RF transmitter, an RF receiver, and a controller incorporated into each of the implantable and external devices, wherein the RF transmitter and receiver of each device are tunable and may be switched among a plurality of different communications channels which differ in frequency;

    wherein the controller is interfaced to the RF transmitter and receiver in each device to enable data transfer over a selected channel;

    wherein the controllers of the implantable and external devices are programmed to use associated timing circuitry to divide time into frequency hopping frames each of which contains a plurality of time slots of defined length; and

    ,wherein the external device and implantable device controllers are programmed to synchronously switch among a plurality of communications channels during a communications session according to a synchronous channel scan list that specifies the number of time slots within each frequency hopping frame and assigns a communications channel that is to be used for data transfer during each time slot.

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