PROBLEM TO BE SOLVED: To stably hold rotors in a desired position of a tissue regardless of the shape of the tissue.SOLUTION: This treatment device 1 includes: an elongated insertion part 2 a plurality of rotors 3a, 3b arranged in a radial direction of the insertion part 2 on the distal end side of the insertion part 2, and rotated around the axis of the long direction of the insertion part 2 and a drive part 5 rotationally driving the plurality of rotors 3a, 3b. The insertion part 2 includes a rotation part 2b connecting one portion 2a on the distal end side to the other portion 2c rotatably in the circumferential direction, and the drive part 5 rotationally drives at least one of the plurality of rotors 3a, 3b to a direction opposite to the rotational direction of the other rotor.COPYRIGHT: (C)2013,JPO&INPIT【課題】組織の形状によらずに組織の所望の位置に回転体を安定に留めておくことができる。【解決手段】細長い挿入部2と、該挿入部2の先端側に該挿入部2の半径方向に配列され、挿入部2の長手方向の軸を中心に回転させられる複数の回転体3a,3bと、該複数の回転体3a,3bを回転駆動する駆動部5とを備え、挿入部2が、先端側の一部分2aを他の部分2cに周方向に回転自在に連結する回転部2bを備え、駆動部5が、複数の回転体3a,3bのうち少なくとも1つを、他の回転体の回転方向に対して反対方向に回転駆動する処置装置1を提供する。【選択図】図1