State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China.
Adv Healthc Mater. 2019 Sep;8(17):e1900633. doi: 10.1002/adhm.201900633. Epub 2019 Jul 10.
Human pulse signals contain important and useful physiological information for the auxiliary diagnosis of cardiovascular disease. Here, a wearable pulse sensor based on piezo-thermic transduction is reported using a structured silver-particle reinforced polydimethylsiloxane (PDMS) membrane, for monitoring radial arterial pulse waves. The structured silver-particle reinforced PDMS membrane is optimally designed to meet the specific requirements on sensitivity, linearity, and effective preload measuring range for pulse detection by adjusting the air gap volume fraction and silver particle volume fraction of the structured material. The sensor is endowed with high sensitivity, good linearity in preload measuring range, allowing to detect the subtle pulse waveforms of subjects at different ages under different contact pressures, such as superficial (Fu), medium (Zhong) and deep (Chen). The developed pulse device provides a promising approach for homecare pulse monitoring.
人体脉搏信号包含重要且有用的生理信息，可用于心血管疾病的辅助诊断。本文报道了一种基于压电热传导的可穿戴脉搏传感器，该传感器使用结构化银颗粒增强聚二甲基硅氧烷（PDMS）膜来监测桡动脉脉搏波。为了满足脉搏检测对灵敏度、线性度和有效预载测量范围的特定要求，通过调整结构化材料的气隙体积分数和银颗粒体积分数，对结构化银颗粒增强 PDMS 膜进行了优化设计。该传感器具有高灵敏度和良好的预载测量范围线性度，可在不同接触压力下检测不同年龄的受试者的微弱脉搏波形，例如浅表（Fu）、中（Zhong）和深（Chen）。所开发的脉搏装置为家庭护理脉搏监测提供了一种很有前途的方法。
