US 10,376,160 B2
Blood pressure estimation method and blood pressure measurement device
Hiroaki Ishizawa, Ueda (JP); and Shouhei Koyama, Ueda (JP)
Assigned to SHINSHU UNIVERSITY, Matsumoto-Shi, Nagano (JP)
Appl. No. 15/309,569
Filed by SHINSHU UNIVERSITY, Matsumoto-shi, Nagano (JP)
PCT Filed May 14, 2015, PCT No. PCT/JP2015/063928
§ 371(c)(1), (2) Date Nov. 8, 2016,
PCT Pub. No. WO2015/174499, PCT Pub. Date Nov. 19, 2015.
Claims priority of application No. 2014-100284 (JP), filed on May 14, 2014; and application No. 2015-044261 (JP), filed on Mar. 6, 2015.
Prior Publication US 2017/0135591 A1, May 18, 2017
Int. Cl. A61B 5/021 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/02108 (2013.01) [A61B 5/0075 (2013.01); A61B 5/7235 (2013.01); A61B 5/7264 (2013.01); A61B 2560/0223 (2013.01); A61B 2562/0266 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A blood pressure estimation method comprising:
measuring an acceleration pulse wave using a fiber Bragg grating sensor;
constructing a calibration model that represents a correlation between measured waveform data of the measured acceleration pulse wave and measured blood pressure values measured at individual measurement time points of the measured waveform data; and
with a processor, using the calibration model to estimate blood pressure values of a subject at a time of an acceleration pulse wave measurement, from the waveform data of the acceleration pulse wave measured from the subject,
wherein the calibration model is constructed by:
extracting a plurality of sets of one-cycle waveform data from the measured waveform data;
standardizing each set of extracted one-cycle waveform data either so that an amount of wavelength displacement is the same or so that the amount of wavelength displacement and a time span are the same; and
performing regression analysis with standardized one-cycle waveform data as an explanatory variable and the measured blood pressure value as an objective variable.