Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2006-03-14
2010-06-01
Getzow, Scott M (Department: 3762)
Surgery
Diagnostic testing
Cardiovascular
C600S509000
Reexamination Certificate
active
07729753
ABSTRACT:
Systems and techniques relating to locating cardiac wave forms in a cardiac signal, and to detecting a physiological condition, such as ventricular fibrillation. In general, in one aspect, a machine-implemented method includes obtaining a sensed cardiac signal of an organism, the sensed cardiac signal comprising a time series x(t); applying a Hilbert (H) transform to the time series x(t) to obtain H(x(t)), wherein x(t) and H(x(t)) together forming a partial state space trajectory; determining a speed of trajectory, for the sensed cardiac signal, from the partial state space trajectory; and identifying physiological information concerning the organism based on a combination of first and second signal elements, the first signal element including a phase property or an amplitude property of the speed of trajectory, and the second signal element including an amplitude property of the partial state space trajectory.
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Bhattacharya e
Korzinov Lev
Kremliovsky Michael
CardioNet, Inc.
Fish & Richardson P.C.
Getzow Scott M
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