A new method of continuous blood pressure monitoring using multichannel sensing signals on the wrist  

作　　者：Liangqi Wang Shuo Tian Rong Zhu 

机构地区：[1]State Key Laboratory of Precision Measurement Technology and Instrument,Department of Precision Instrument,Tsinghua University,100084 Beijing,China

出　　处：《Microsystems & Nanoengineering》2023年第5期141-150,共10页微系统与纳米工程（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant No.92248302,51735007);the Beijing Natural Science Foundation(3191001).

摘　　要：Hypertension is a worldwide health problem and a primary risk factor for cardiovascular disease.Continuous monitoring of blood pressure has important clinical value for the early diagnosis and prevention of cardiovascular disease.However,existing technologies for wearable continuous blood pressure monitoring are usually inaccurate,rely on subject-specific calibration and have poor generalization across individuals,which limit their practical applications.Here,we report a new blood pressure measurement method and develop an associated wearable device to implement continuous blood pressure monitoring for new subjects.The wearable device detects cardiac output and pulse waveform features through dual photoplethysmography(PPG)sensors worn on the palmar and dorsal sides of the wrist,incorporating custom-made interface sensors to detect the wearing contact pressure and skin temperature.The detected multichannel signals are fused using a machine-learning algorithm to estimate continuous blood pressure in real time.This dual PPG sensing method effectively eliminates the personal differences in PPG signals caused by different people and different wearing conditions.The proposed wearable device enables continuous blood pressure monitoring with good generalizability across individuals and demonstrates promising potential in personal health care applications.

关 键 词：MULTICHANNEL CONTINUOUS METHOD 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]