Wearable piezoelectric blood pressure sensor via Ni exfoliation for carotid artery blood pressure monitoring

Abstract

As modern society enters the era of information and communication technology, smart healthcare, which manages patients' health without restrictions on time and place, is gaining attention. Among important vital signs, blood pressure is an essential indicator for health management, such as diagnosing high blood pressure, which can cause complications including cranial nerve disease. However, existing blood pressure monitors have the disadvantage of not being able to measure blood pressure continuously or having low accuracy. In particular, measuring blood pressure in the carotid artery is useful for diagnosing cardiovascular diseases, but measurement is difficult and continuous monitoring is not possible, and recently reported blood pressure sensors also showed limitations in performance. In this paper, we produced a blood pressure sensor by transferring PZT using a physical exfoliation method using a Ni layer instead of the expensive laser transfer method, and reported that high-accuracy blood pressure monitoring is possible in the carotid artery by measuring a clear pulse signal in humans.