Photoacoustic devices configured for blood pressure estimation

Abstract

Some disclosed examples involve controlling, by a control system of an apparatus, a light source system of the apparatus to provide light to a target object on an outer surface of the apparatus and receiving, by the control system, ultrasonic receiver signals from each of a plurality of M ultrasonic receiver elements in a single array, the ultrasonic receiver signals corresponding to ultrasonic waves generated by the target object responsive to the light. Some disclosed examples involve detecting, by the control system, an artery within the target object based on the ultrasonic receiver signals and estimating, by the control system, a blood pressure within the artery based on the ultrasonic receiver signals.