An ultrasonic probe system includes a rod-shaped main body portion, an ultrasonic observation portion which is provided in the main body portion and transmits an ultrasonic wave in a lateral direction of the main body portion to receive a reflected wave, and an ultrasonic observation portion A distal end portion having a larger diameter than the main body portion and provided so that a proximal end surface thereof is adjacent to a distal end in the axial direction of the main body portion, and a distal end portion having a larger diameter than the main body portion and having a larger diameter than the main body portion, A distal end surface disposed at a distal end of the sheath portion and facing the proximal end surface, and a distal end surface provided on at least one of the proximal end surface and the distal end surface, A specimen sampling section having an acute angle with respect to the entire circumference in the axial direction so as to separate the specimen in an annular shape and a second specimen sampling section for cutting the annular specimen taken by the specimen sampling section, And a blade portion disposed on the proximal end surface or the distal end surface so as to intersect with each other.超音波プローブシステムは、棒状の本体部と、前記本体部に設けられ、前記本体部の側面方向に超音波を送信し、反射波を受信する超音波観察部と、基端側の面である基端面が前記本体部の軸方向の先端に隣接するように設けられ、前記本体部よりも大径の先端部と、前記本体部よりも大径であり、前記本体部を前記軸方向に進退自在に内部に収容する筒形状のシース部と、前記シース部の先端に配置され、前記基端面と対面する先端面と、前記基端面および前記先端面の少なくとも一方に設けられ、被検体から円環状に検体を分離するために全周が軸方向に向けて鋭角な検体採取部と、前記検体採取部により採取された円環状の前記検体を切断するため、前記検体採取部の前記全周に対して交差するように前記基端面または前記先端面に配置された刃部と、を具備する。
