PROBLEM TO BE SOLVED: To provide an acoustic matching member which can be easily replaced and in which air is hardly mixed in a biological information acquisition apparatus.SOLUTION: The biological information acquisition apparatus includes: a plate which maintains the shape of a subject the acoustic matching member which is arranged between the subject and the plate and a probe which receives an acoustic wave propagating in the subject through the acoustic matching member and the plate. The acoustic matching member includes a first part which makes contact with the subject and a second part which makes contact with the plate. The second part is an elastic body which exhibits a rigidity higher than that of the first part.COPYRIGHT: (C)2011,JPO&INPIT【課題】生体情報取得装置において交換が容易かつ空気が混入しにくい音響マッチング部材を提供する。【解決手段】被検体の形状を保つプレートと、前記被検体と前記プレートとの間に設けられる音響マッチング部材と、被検体内を伝播した音響波を、前記音響マッチング部材および前記プレートを介して受信する探触子とを有し、前記音響マッチング部材は前記被検体に接する第1の部分および前記プレートに接する第2の部分を含み、前記第2の部分は前記第1の部分よりも剛性が高い弾性体であることを特徴とする生体情報取得装置を用いる。【選択図】図1
