Apparatus for annotating physiological waveforms

Details Apparatus for annotating physiological waveforms Apparatus for annotating physiological waveforms

1995-08-02

1997-02-25

Kamm, William E.

Surgery

Truss

Pad

128710, 128712, A61B 504, A61B 50402, A61B 5044

Patent

active

056051581

ABSTRACT:
An apparatus for annotating physiological waveforms is provided. The apparatus comprises an implantable medical device, which may be a pacemaker or a cardioverter/defibrillator, and a programmer for use with the implantable medical device. The implantable medical device may be modeled as a finite state machine. Whenever the implantable medical device enters a new state, a state transition vector or a current state vector is transmitted to the programmer. The programmer implements a state machine model of the implantable medical device to determine the current state of the device based on the received state vectors. Because the exact state of the implantable medical device is known, the programmer can annotate the physiological waveform more completely than has previously been possible. For example, when the behavior of the implantable medical device is unclear, the programmer can place an explanatory label adjacent to the displayed physiological waveform.

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