Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2005-09-15
2011-10-18
Patel, Niketa (Department: 3762)
Surgery
Diagnostic testing
Cardiovascular
C600S424000, C600S506000
Reexamination Certificate
active
08038625
ABSTRACT:
An electrophysiology apparatus is used to measure electrical activity occurring in a heart of a patient and to visualize the electrical activity and/or information related to the electrical activity. A three-dimensional map of the electrical activity and/or the information related to the electrical activity is created. Exemplary maps include a time difference between action potentials at a roving electrode and a reference electrode, the peak-to-peak timing of action potentials at the roving electrode, the peak negative voltage of action potentials at the roving electrode, complex fractionated electrogram information, a dominant frequency of an electrogram signal, a maximum peak amplitude at the dominant frequency, a ratio of energy in one band of the frequency-domain to the energy in a second band of the frequency-domain, a low-frequency or high-frequency passband of interest, a frequency with the maximum energy in a passband, a number of peaks within a passband, an energy, power, and/or area in each peak, a ratio of energy and/or area in each peak to that in another passband, and a width of each peak in a spectrum. Colors, shades of colors, and/or grayscales are assigned to values of the parameters and colors corresponding to the parameters for the electrograms sampled by the electrodes are updated on the three-dimensional model.
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Afonso Valtino X.
Belhe Kedar Ravindra
Schweitzer Jeffrey A.
Heimbecher & Assoc. , LLC
Lavert Nicole F
Patel Niketa
St. Jude Medical, Atrial Fibrillation Division, Inc.
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