PROBLEM TO BE SOLVED: To provide a catheter of a simple configuration which can perform ablation of an embolus of a blood vessel and can acquire an ultrasonic image of the blood vessel.SOLUTION: A catheter 10 comprises: a shaft 11 having an opening 20 on a part of a side wall on the distal end side a cutter 12 which is located near the opening 20 in an internal space of the shaft 11 and is movable in an axial direction 101 of the shaft 11 a balloon 23 which is arranged on the side opposite to the opening 20 with respect to the axial line of the shaft 11, and is swollen outward from the side wall of the shaft 11 and a phased array type ultrasonic probe 17 which is arranged along a circumferential direction 102 of an outer peripheral surface of the side wall near the opening 20, on the same side as at least the opening 20 with respect to the axial line of the shaft 11.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】血管の塞栓を切除することができ、かつ血管の超音波画像を取得できる簡易な構造のカテーテルを提供する。【解決手段】カテーテル10は、先端側の側壁の一部に開口20を有するシャフト11と、シャフト11の内部空間において開口20付近に位置されており、シャフト11の軸線方向101に移動可能なカッター12と、シャフト11の軸線に対して開口20と反対側に配置されており、シャフト11の側壁から外側へ膨らむバルーン23と、シャフト11の軸線に対して少なくとも開口20と同じ側において、開口20付近の側壁の外周面の周方向102に沿って配置されたフェーズドアレイ型の超音波探触子17と、を具備する。【選択図】図2
