Continuous monitoring of cardiovascular risk factors in daily life is crucial for disease prevention and management.Current wearable systems,such as photoplethysmography(PPG),ultrasound,and pressure sensors,can captur...Continuous monitoring of cardiovascular risk factors in daily life is crucial for disease prevention and management.Current wearable systems,such as photoplethysmography(PPG),ultrasound,and pressure sensors,can capture some of these parameters but require precise sensor alignment over arteries.This alignment dependency complicates daily use and makes the signals highly susceptible to motion artifacts.In this work,we present a textile-based alignmentfree electrophysiological sensing sleeve(TAESS)that can be comfortably worn on the upper arm.The TAESS integrates impedance plethysmography(IPG)and electrocardiography(ECG)to enable synchronized cardiovascular haemodynamic monitoring,including blood pressure(BP),cardiac output(CO),systemic vascular resistance(SVR),heart rate(HR),and other metrics.The sleeve is fabricated using silver-based conductive yarns,forming flexible,breathable,and stretchable electrodes that are produced via an automated,low-cost knitting process.Compared to commercial electrodes,TAESS demonstrates superior permeability(37.5 mg·cm^(-2)·h^(-1)),stretchability(exceeding 45%in wale direction),and thermal regulation(remaining within 0.4℃after exercise).Most importantly,it maintains high signal fidelity and is minimally affected by radial movements,outperforming commercial PPG sensors in blood volume detection.The TAESS achieved systolic and diastolic BP prediction root-mean-squared errors of 7.05mmHg and 5.93 mmHg,respectively,even under respiratory interference and after re-wearing.This scalable,low-cost sensing sleeve offers a robust and alignment-free solution for continuous cardiovascular monitoring,paving the way for personalized healthcare in daily life.展开更多
基金supported in part by the Shenzhen-Hong Kong-Macao Technology Research Programme(Type C)from Science,Technology and Innovation Commission of Shenzhen Municipality(STIC)under the Grant SGDX20220530111200001in part by the Hong Kong Centre for Cerebrocardiovascular Health Engineering under the InnoHK Scheme of Hong Kong SAR,Chin and in part by the Centre for Perceptual and Interactive Intelligence(CPII)Ltd.under the InnoHK scheme of Innovation and Technology Commission.
文摘Continuous monitoring of cardiovascular risk factors in daily life is crucial for disease prevention and management.Current wearable systems,such as photoplethysmography(PPG),ultrasound,and pressure sensors,can capture some of these parameters but require precise sensor alignment over arteries.This alignment dependency complicates daily use and makes the signals highly susceptible to motion artifacts.In this work,we present a textile-based alignmentfree electrophysiological sensing sleeve(TAESS)that can be comfortably worn on the upper arm.The TAESS integrates impedance plethysmography(IPG)and electrocardiography(ECG)to enable synchronized cardiovascular haemodynamic monitoring,including blood pressure(BP),cardiac output(CO),systemic vascular resistance(SVR),heart rate(HR),and other metrics.The sleeve is fabricated using silver-based conductive yarns,forming flexible,breathable,and stretchable electrodes that are produced via an automated,low-cost knitting process.Compared to commercial electrodes,TAESS demonstrates superior permeability(37.5 mg·cm^(-2)·h^(-1)),stretchability(exceeding 45%in wale direction),and thermal regulation(remaining within 0.4℃after exercise).Most importantly,it maintains high signal fidelity and is minimally affected by radial movements,outperforming commercial PPG sensors in blood volume detection.The TAESS achieved systolic and diastolic BP prediction root-mean-squared errors of 7.05mmHg and 5.93 mmHg,respectively,even under respiratory interference and after re-wearing.This scalable,low-cost sensing sleeve offers a robust and alignment-free solution for continuous cardiovascular monitoring,paving the way for personalized healthcare in daily life.
