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Single complex electrogram display having a sensing threshold for an implantable medical device

  • US 6,577,896 B2
  • Filed: 02/09/2001
  • Issued: 06/10/2003
  • Est. Priority Date: 05/07/1998
  • Status: Expired due to Term
First Claim
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1. A system for graphically displaying information received from at least one lead positioned within a passageway of a heart related to an implantable medical device, the system comprising:

  • an analyzer for receiving the electrogram signal from the electrical lead and for locating and marking desired characteristics of the electrogram signal with a plurality of markers to produce a marked electrogram signal;

    a processor for receiving the marked electrogram signal from the analyzer, for recognizing the marked desired characteristics of the electrogram signal, and for inserting amplitude information into the marked electrogram signal;

    a display buffer for momentarily capturing a portion of the electrogram signal adjacent to a single marker;

    updating means for continuously updating the captured portion of the electrogram signal;

    a selection switch for selecting a selected signal between the electrogram signal received from the electrical lead and the captured portion of the electrogram signal stored in the display buffer;

    a sensitivity threshold control for controlling a sensitivity threshold; and

    a display controlled by the processor for displaying the selected signal and for graphically displaying the sensitivity threshold superimposed on the selected signal.

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