A robust and flexible pulse wave sensory array enabling real-time non-invasive blood pressure monitoring. (1st March 2022)

• Record Type: Journal Article
• Authors: Li, Anqi; Lin, Jianle; Li, Huimin; Yang, Qi; Liu, Xinghui; Jiang, Bowei; Zhang, Yuling; Wang, Kai
• Is Part Of: Flexible and printed electronics. Volume 7:Number 1(2022)
• Publication Date: 2022-03-01
• Subjects: flexible -- pulse wave sensor -- blood pressure estimation; Flexible electronics -- Periodicals; Printed electronics -- Periodicals; Flexible electronics; Printed electronics; Electronic journals; Periodicals; 621.381
• DOI: 10.1088/2058-8585/ac5e0d
• Languages: English
• ISSNs: 2058-8585

Abstract

Abstract: Chronical cardiovascular decreases such as hypertension requires real-time and continuous monitoring of blood pressures (BPs). Pulse wave that contains critical and ample information on cardiovascular dynamics is a direct vital sign to extract BP and therefore an epidermal wearable device enabling real-time acquisition of pulse waves becomes necessary. In this work, we propose and study a flexible pulse wave sensory array aiming for real-time wearable pulse wave acquisition with robustness. A piezoelectric sensor together with a thin-film transistor-based sensor interface circuit is used to detect multiple pulse waveforms at the location of radial artery, which are input to a convolutional neural network for a deep-learning BP estimation model training. The estimated BPs are assessed by a correlation study with the BPs measured by conventional sphygmomanometers. Our study shows a reasonable accuracy of mean deviation and standard deviation of 2.84 ± 7.53 mmHg for systolic BP and 0.88 ± 7.06 mmHg for diastolic BP.