Fig. 4: Wearable sensors for blood pressure.
From: State-of-the-art wearable sensors for cardiovascular health: a review
a Blood pressure measurement watch based on the oscillometric technique. b Wearable blood pressure device based on the vascular unloading technique. c Blood pressure measurement watch based on the PPG technique. d Stretchable ultrasound sensors for blood pressure measurement ref. 136. e Pressure sensors for blood pressure measurement ref. 140. f PTT and PAT for blood pressure measurement ref. 131. g PAT wireless measurement system ref. 148. h PTT measurement system based on PPG and ECG ref. 149. i PTT measurement system based on IPG sensors ref. 152.
