Soft Iontronic Capacitive Sensor for Beat?to?Beat Blood Pressure Measurements

Continuous beat-to-beat blood pressure (BP) monitoring provides hemodynamic information such as BP changes and waveforms over time, providing abundant to more accurately diagnose a person's cardiovascular health compared static cuff-based measurements. To overcome the shortcomings of current techniques, highly sensitive (S = 108.52 kPa?1 for 0–5 kPa range) soft capacitive sensor that can be worn like Band-Aid is developed continuous sustainably achieved after an initial calibration. The leverages iontronic material with air gaps dielectric combined wrinkled, stretchable electrodes; resulting average sensitivity this device demonstrated higher than other comparable sensors in literature. For capture, operating frequency 300 kHz chosen achieve temporal resolution monitoring. Further, multi-island design work allows rapid placement without needing align underlying artery. Because improved sensitivity, adhered pulse points applanator. Finally, demonstrates sustained recordings show excellent systolic, diastolic, mean arterial correlation FDA-cleared device, Caretaker.