Flexible Piezoresistive Sensor Patch Enabling Ultralow Power Cuffless Blood Pressure Measurement

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

142 Scopus Citations
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Author(s)

  • Ningqi Luo
  • Wenxuan Dai
  • Chenglin Li
  • Zhiqiang Zhou
  • Liyuan Lu
  • Carmen C.Y. Poon
  • Shih-Chi Chen
  • Ni Zhao

Detail(s)

Original languageEnglish
Pages (from-to)1178-1187
Journal / PublicationAdvanced Functional Materials
Volume26
Issue number8
Online published17 Dec 2015
Publication statusPublished - 23 Feb 2016
Externally publishedYes

Abstract

Noninvasive and real-time cuffless blood pressure (BP) measurement realizes the idea of unobtrusive and continuous BP monitoring which is essential for diagnosis and prevention of cardiovascular diseases associated with hypertension. In this paper, a wearable sensor patch system that integrates flexible piezoresistive sensor (FPS) and epidermal electrocardiogram (ECG) sensors for cuffless BP measurement is presented. By developing parametric models on the FPS sensing mechanism and optimizing operational conditions, a highly stable epidermal pulse monitoring method is established and beat-to-beat BP measurement from the ECG and epidermal pulse signals is demonstrated. In particular, this study highlights the compromise between sensor sensitivity and signal stability. As compared with the current optical-based cuffless BP measurement devices, the sensing patch requires much lower power consumption (3 nW) and is capable of detecting subtle physiological signal variations, e.g., pre and postexercises, thus providing a promising solution for low-power, real-time, and home-based BP monitoring. A wearable sensor patch that integrates a flexible piezoresistive sensor and epidermal electrocardiogram sensors is demonstrated for extracting real-time beat-to-beat blood pressure (BP) through a pulse transit time method. This sensing patch requires ultralow power consumption (3 nW) and is capable of detecting subtle physiological signal variations, e.g., pre- and post-exercises, thus providing a promising solution for real-time and home-based BP monitoring.

Research Area(s)

  • blood pressure monitoring, flexible electronics, piezoresistive sensors, wearable sensors

Citation Format(s)

Flexible Piezoresistive Sensor Patch Enabling Ultralow Power Cuffless Blood Pressure Measurement. / Luo, Ningqi; Dai, Wenxuan; Li, Chenglin; Zhou, Zhiqiang; Lu, Liyuan; Poon, Carmen C.Y.; Chen, Shih-Chi; Zhang, Yuanting; Zhao, Ni.

In: Advanced Functional Materials, Vol. 26, No. 8, 23.02.2016, p. 1178-1187.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal