PROBLEM TO BE SOLVED: To provide an ultrasonic sensor and an organ measuring device using the ultrasonic sensor capable of attaining high accuracy and high stability by oscillating an ultrasonic wave at a wide angle to an organ to be measured and receiving its reflected wave in a wide region.SOLUTION: An ultrasonic sensor includes: an ultrasonic probe 2 for oscillating an ultrasonic wave at a wide angle to an organ to be measured in a body and receiving the reflected wave of the ultrasonic wave from the organ to be measured and a plurality of receiving elements 3 disposed in the periphery of the ultrasonic probe 2 to receive the reflected wave of the ultrasonic wave to the peripheral region of the ultrasonic probe 2. The tip of the ultrasonic probe 2 is formed like a convex lens by a sheet-like PVDF (polyvinylidene fluoride) partitioned so that the receiving elements 3 can receive the reflected wave by each of the plurality of regions.COPYRIGHT: (C)2014,JPO&INPIT【課題】測定対象臓器に対して超音波を広角に発振し、その反射波を広領域で受信することで、高精度で且つ安定性が高い超音波センサ及び当該超音波センサを用いた臓器測定装置を提供する。【解決手段】体内の測定対象臓器に対して超音波を広角に発振すると共に、前記測定対象臓器からの前記超音波の反射波を受信する超音波探触子2と、超音波探触子2の周辺に配設され、前記超音波探触子2の周辺領域への前記超音波の反射波を受信する複数の受信素子3とを備え、前記超音波探触子2の先端部を凸レンズ形状とし、前記受信素子3が複数の領域ごとに前記反射波を受信可能に区画されたシート状のPVDF(ポリフッ化ビニリデン)で形成されている。【選択図】図1
