Acoustic matching material supply device, ultrasonic probe unit, ultrasonic measurement apparatus, and ultrasonic image display

An acoustic matching material supply device comprising:

• a frame portion that is attachable to an ultrasonic probe and ejects an acoustic matching material, wherein the ultrasonic probe includes an ultrasonic sensor surface for performing at least one of transmission and reception of ultrasonic waves,
• wherein the frame portion includes
• a flow passage forming portion that defines a flow passage through which an acoustic matching material may flow, and
• an introduction port that outputs the acoustic matching material to the flow passage of the flow passage forming portion,
• wherein the flow passage forming portion has a central extending portion that includes a central ejection port that ejects the acoustic matching material, and with the frame portion attached to the ultrasonic probe, the central extending portion extends toward the center of the ultrasonic sensor surface and the central ejection port ejects the acoustic matching material toward the center of the ultrasonic sensor surface.