ULTRASONIC PROBE AND ULTRASONIC IMAGE DIAGNOSTIC DEVICE, METHOD OF MANUFACTURING ACOUSTIC LENS, AND METHOD OF MANUFACTURING MATCHING LAYER

摘要

PROBLEM TO BE SOLVED: To provide technique associated with an ultrasonic probe and an ultrasonic image diagnostic device with which propagation loss of an ultrasonic wave is small and transmissivity to the ultrasonic wave is excellent.

SOLUTION: In an ultrasonic probe 1 including a piezoelectric element layer 5, a matching layer 6, and an acoustic lens 9, the acoustic lens 9 has a stack structure comprising a plurality of layers including a metal ion cross-linked object of an ionic polymer, and is formed so as to adjust a composition of the metal ion crosslinked object of the ionic polymer so that the propagation speed of the ultrasonic wave becomes faster away from the center side of the acoustic lens 9 in a direction of crossing a thickness direction of the acoustic lens 9.

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