PROBLEM TO BE SOLVED: To provide a device having a member for holding a subject from which a signal is to be detected that suppresses the deterioration of the strength of the detected signal by increasing a contact area of the subject and the holding member.SOLUTION: A subject information acquisition device includes: holding means 2 including a holding member for holding a subject which is a part of a person to be examined in a state that it is in contact with the holding member a flexible member that at least wraps a part of a region on the side away from the person to be examined of the side edge part of the subject, and causes it to contact the holding member: fixing means 3 for fixing the flexible member to the holding means a light source 4 a probe 6 for receiving an acoustic wave generated by the irradiation of light on the subject from the light source and signal processing means for calculating characteristic information on the inside of the subject using the acoustic wave received by the probe 6.COPYRIGHT: (C)2015,JPO&INPIT【課題】信号を検出する対象となる被検体を保持する部材を有する装置において、被検体と保持部材との接触面積を増大させ、検出される信号強度の低下を抑制する。【解決手段】保持部材を含み、被検者の一部である被検体を、保持部材に接触した状態で保持する保持手段2と、少なくとも、被検体の辺縁部のうち被検者から離れている側の一部の領域を包み込み、保持部材に接触させる可撓性部材と、可撓性部材を保持手段に固定する固定手段3と、光源4と、光源から被検体に光が照射されることにより発生する音響波を受信する探触子6と、探触子6が受信した音響波を用いて被検体内部の特性情報を算出する信号処理手段を有する被検体情報取得装置を用いる。【選択図】図1
