Patent ID: 11937902
Assignee: HIROSHIMA UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 3:
4. A non-transitory computer readable medium storing a program causing a computer to function as a blood pressure estimation device by causing the computer to execute a biological signal processing procedure for receiving a biological signal from a biological signal measurement device configured to contact with a dorsal part of a person to capture the biological signal propagated through a body surface of the dorsal part in a non-constraining manner, and analyzing the received biological signal,
wherein, as the biological signal processing procedure, the computer is caused to execute:
a procedure for filtering, with a predetermined frequency band, a biological signal time-series waveform of the biological signal into a filter-processed waveform in which a cardiac cycle is manifested;
a procedure for collating the filter-processed waveform with cardiogram waveform data measured simultaneously with the received biological signal and obtained from a cardiograph, specifying a waveform component in a range of the biological signal time-series waveform from a ventricular filling period to isovolumetric systole in the filter-processed waveform, and finding an index regarding vibration ascribable to a blood flow rate change in a period from the ventricular filling period to the isovolumetric systole;
a procedure for finding an index time-series waveform of the index regarding the vibration ascribable to the blood flow rate change and finding an index regarding fluctuation indicating a change in the found time-series waveform; and
a procedure for estimating a blood pressure of the person based on the index regarding the fluctuation by using correlation data for the blood pressure estimation which is stored in a storage unit in advance and shows a relation between the index regarding the fluctuation and the blood pressure estimation.