There is proposed a catheter which is provided with a removal mechanism which excavates a tubular-organ occluding object inside a living body safely and also more efficiently and which can discharge the removed excavated object easily to the outside of the body. The proposed a catheter is a catheter including: a sheath portion which has a lumen elongated in the inside thereof and which is inserted into a tubular-organ inside a living body an insertion member 120 which has a lumen elongated in the inside thereof and which is arranged freely slidably and also rotatably with respect to the lumen of the sheath portion and a removal mechanism 140 for removing occluding object of the tubular-organ inside the living body. The removal mechanism 140 includes a support portion 142 arranged at a distal portion of the insertion member 120 and a plurality of rotation bodies 152A to 152C arranged at the support portion 142 so as to surround the circumference of the axis of the insertion member 120. The rotation bodies 152A to 152C includes blade edge for excavating the occluding object and rotation axis extended to the direction intersecting with the axis of the insertion member 120.
