Patent ID: 6615075
Filing Date: 2003-09-02
Classification: A61B,G16H

Abstract:
A noninvasive arrhythmia localization and classification apparatus, comprising a signal processor which is adapted to receive electrical heart signals indicative of a heart's atrial and ventricular activity wherein said signal analyzer is further adapted to:(a) receive an arrhythmia signal that contains said electrical heart signals obtained during an arrhythmia and said atrial activity is obscured by said ventricular activity; (b) receive at least two template signals to construct a QRST template; (c) identify and annotate one or more fiducial points and windows of said arrhythmia signal to create an annotated arrhythmia signal; (d) identify and annotate one or more fiducial points and windows of said QRST template to create an annotated QRST template; (e) align said annotated QRST template with said annotated arrhythmia signal using said one or more fiducial points and windows and thereby creating an aligned QRST template; (f) resample and modulate said aligned QRST template to compensate for on one or more discrepancies between said aligned QRST template and said annotated arrhythmia signal using said one or more fiducial points and windows and thereby creating a resampled and modulated QRST template; and (g) isolate said atrial activity from said arrhythmia signal obtained by a subtraction of said resampled and modulated QRST template from said arrhythmia signal.