Patent ID: 9504400
Filing Date: 2016-11-29
CPC Classification: A61B

Claim Text:
1. An atrial fibrillation analysis system, comprising: an acquisition unit that acquires a detected waveform signal indicating a temporal change of a detection result of a pulse wave or an electrocardiogram; a waveform storage unit that stores the acquired detected waveform signal; an RR interval calculation unit that calculates, on the basis of a frequency spectrum of each unit time obtained by frequency analysis of the acquired detected waveform signal, a parameter corresponding to an average RR interval every unit time; a power calculation unit that calculates power of a frequency band determined in advance in a frequency spectrum of an RR waveform signal indicating a temporal change of the average RR interval calculated by the RR interval calculation unit; a variation coefficient calculation unit that calculates a variation coefficient of the average RR interval in the RR waveform signal; an analysis unit that determines presence of atrial fibrillation at each time on the basis of a set of the power and the variation coefficient; a measurement unit that measures an amount of activity of a user by detecting body movement of the user; a first storage unit that stores the amount of activity measured by the measurement unit and a time when the amount of activity is measured so as to match each other; an evaluation unit that evaluates the amount of activity measured by the measurement unit during onset of the atrial fibrillation to distinguish between the amount of activity in presence of the atrial fibrillation and the amount of activity in absence of the atrial fibrillation, wherein the onset of the atrial fibrillation is determined by the analysis unit; a processing device that acquires the amount of activity measured by the measurement unit and processes data indicating the amount of activity on the basis of an analysis result of the analysis unit; and a presentation device that presents the data processed by the processing device.