Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2005-10-31
2010-02-02
Layno, Carl H (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
C600S508000, C600S509000, C600S512000, C600S523000, C128S920000, C128S922000, C128S923000
Reexamination Certificate
active
07657307
ABSTRACT:
A method of classifying arrhythmias using scatter plot analysis to define a measure of variability of a cardiac rhythm parameter such as for example, without limitation, R-R interval, A-A interval, and the slope of a portion of a cardiac signal, is disclosed. The variability measurement is derived from a scatter plot of a cardiac rhythm parameter, employing a region counting technique that quantifies the variability of the cardiac rhythm parameter while minimizing the computational complexity. The method may be employed by an implantable medical device or system, such as an implantable pacemaker or cardioverter defibrillator, or by an external device or system, such as a programmer or computer. The variability measurement may be correlated with other device or system information to differentiate between atrial flutter and atrial fibrillation, for example. The variability information may also be used by the device or system to select an appropriate therapy for a patient.
REFERENCES:
patent: 4732157 (1988-03-01), Kaplan et al.
patent: 5404880 (1995-04-01), Throne
patent: 5622178 (1997-04-01), Gilham
patent: 6230059 (2001-05-01), Duffin
patent: 6490479 (2002-12-01), Bock et al.
patent: 7269454 (2007-09-01), Sherman
patent: 2002/0065473 (2002-05-01), Wang et al.
patent: 2004/0092836 (2004-05-01), Ritscher et al.
patent: WO9802209 (1998-01-01), None
“Do Existing Measures of Poincare Plot Geometry Reflect Nonlinear Features of Heart Rate Variability?” Brennan et al., IEEE Trans Biomed Eng. Nov. 2001;48(11):1342-7. Related Articles, Links Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, Victoria, Australia.
Groen Joanneke G.
Van Dam Peter M.
Bauer Stephen W.
Layno Carl H
Malamud Deborah
Medtronic Inc.
LandOfFree
Method of and apparatus for classifying arrhythmias using... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of and apparatus for classifying arrhythmias using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for classifying arrhythmias using... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4169295