公开(公告)号：US20230293117A1

公开(公告)日：2023-09-21

申请号：US17752911

申请日：2022-05-25

Applicant: MICROLIFE CORPORATION

Inventor： Ching-Fu WANG ,  Shih-Zhang LI ,  You-Yin CHEN ,  Chia-Ming LIN

IPC: A61B5/00 ,  A61B5/022

CPC classification number: A61B5/7278 ,  A61B5/022 ,  A61B5/7455 ,  A61B2560/0223

Abstract: A system for estimating BPs using a PPG signal analysis comprises an upper-arm wearable apparatus, a cuff-based BP measuring apparatus, a PPG signal receiver and analyzer, and a PPG to BP estimator and calibrator. The upper-arm wearable apparatus senses modeling-used PPG waveform signals. The cuff-based BP measuring apparatus obtains real PVR waveforms and real BPs. The PPG signal receiver and analyzer is configured to process the modeling-used PPG waveform signals and derive modeling-used characteristic parameters, and have modeling-used personal information parameters. The PPG to BP estimator and calibrator is configured to calculate estimated BPs based on the modeling-based characteristic parameters and the modeling-used personal information parameters, store a calibration model which approximately fits relationship between the estimated BPs and the real BPs; and calculate modeling-used calibrated-estimated BPs using the calibration model.