Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2011-03-08
2011-03-08
Layno, Carl H (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
Reexamination Certificate
active
07904142
ABSTRACT:
An apparatus comprising an implantable cardiac signal sensing circuit configured for sensing an intrinsic cardiac signal, a memory to store a template of a morphology of normal atrial-ventricular conduction, and a controller that includes a tachyarrhythmia detection circuit and a correlation circuit. The tachyarrhythmia detection circuit is configured for detecting a rhythm with elevated ventricular rate using the sensed intrinsic cardiac signal. The correlation circuit is configured for iteratively calculating a correlation between the sensed intrinsic cardiac signal and the template, and comparing the calculated correlation to a variable correlation threshold to determine whether the detected rhythm correlates to the template. The apparatus also includes a therapy circuit configured for inhibiting a ventricular tachycardia therapy when the detected rhythm correlates to the template. Other apparatuses and methods are described.
REFERENCES:
patent: 2004/0093035 (2004-05-01), Schwartz et al.
patent: 2005/0149125 (2005-07-01), Kim et al.
patent: 2006/0217621 (2006-09-01), Kim et al.
Gold, M., et al., “Rhythm Discrimination Using a New Electrogram Vector Timing and Correlation (VTC) Algorithm”,NASPE 2001, PowerPoint Presentation, (2001).
Kim, Jaeho, et al., “Rhythm Discrimination of Sudden Onset and One-to-One Tachyarrhythmia”, U.S. Appl. No. 11/276,213, filed Feb. 17, 2006, 33 Pages.
Kim, Jaeho, et al., “Tachyarrhythmia Sudden Onset Detection With Hysteresis”, U.S. Appl. No. 11/301,440, filed Dec. 13, 2005, 22 Pages.
Kim, Jaeho, et al., “Zoneless Tachyarrhythmia Detection With Real-Time Rhythm Monitoring”, U.S. Appl. No. 11/301,716, filed Dec. 13, 2005, 41 Pages.
Bocek Joseph M.
Kim Jae-ho
Li Dan
Cardiac Pacemakers Inc.
Layno Carl H
Schwegman Lundberg & Woessner, P.A.
Stice Paula J
LandOfFree
Self-adjusting ECG morphological feature correlation threshold does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-adjusting ECG morphological feature correlation threshold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-adjusting ECG morphological feature correlation threshold will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2722356