Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2008-04-29
2008-04-29
Layno, Carl (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
C607S023000
Reexamination Certificate
active
10872165
ABSTRACT:
A method and device, such as an implantable cardiac device, for motion and noise immunity in hemodynamic measurement is presented. The method includes obtaining a template waveform representing hemodynamic performance of a heart during a first hemodynamic state and obtaining an autocharacterization measure from an autocharacterization (e.g., autocorrelation) of the template waveform. The method further includes obtaining a test waveform during a second hemodynamic state, performing a cross-characterization (e.g., cross-correlation) of the template waveform and test waveform to identify a cross-characterization measure, and comparing the autocharacterization measure with the cross-characterization measure as a measurement of hemodynamic status of the second hemodynamic state. The device includes hardware and/or software for performing the described method.
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Heller Tammie K.
Layno Carl
Mitchell Steven M.
Pacesetter Inc.
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