Abstract
Blood pressure (BP) assessment is one of the essential vital signs in the clinical field because of its significant relation with various chronic diseases. For effective continuous BP monitoring at home, the system should be portable, user-friendly, and comfortable for the patient, ensuring convenience during continuous data collection. Here, a wearable neckband-type earphone for continuous monitoring of cardiovascular symptoms and BP in a non-invasive and wireless manner via a Self-powered Box Knot Pulsewave sensor (SBKP) has been reported. The multi-stacked architecture of the SBKP, inspired by the knotting craft, holds a sensitivity and resolution of 38.17 mV Pa(-1), and 0.006 kPa, respectively, which allows for the measurement of the human pulse waves from the cheek, neck, and wrist. Additionally, its low energy consumption sensor, achieved by the triboelectric mechanism, enables us to develop additional user-convenient auxiliary care systems: continuous BP monitoring with potential music therapy.