Patent ID: 7955252

Claim:
An endoscopic treatment system comprising an insertion-retraction and rotating device for a treatment tool, which performs an insertion-retraction operation along an insertion-retraction direction of a longitudinal axis of a treatment tool and a rotating operation around the longitudinal axis, of the treatment tool inserted in a channel of an endoscope, wherein the insertion-retraction and rotating device for a treatment tool comprises: a pair of rollers which are to be directly in contact with the treatment tool; a driving device which drives rotations of the pair of rollers in rotational directions around respective axes thereof which are parallel to each other; and a holding member which is disposed between the treatment tool and the pair of rollers and holds a contacting portion between the treatment tool and the pair of rollers, wherein said pair of rollers are inclined with respect to the insertion-retraction direction of the treatment tool and to a planar face orthogonal to the insertion-retraction direction of the treatment tool, an opening which permits contacts between the treatment tool and said pair of rollers is formed in the holding member; and the insertion-retraction operation and the rotating operation of the treatment tool can be performed by varying combination of the rotational directions of said pair of rollers.