Patent ID: 8197396

Claim:
A treatment tool for an endoscope comprising: an outer sheath to be inserted into a channel of an endoscope; a forcep sheath which is movably arranged in the outer sheath along an axial direction; a plurality of forcep cups which are attached to a distal end of the forcep sheath, at least one of which is formed with a sharp needle-shaped portion on a distal end, and which cooperate with each other to be openable/closable as a whole; an operation wire which is movably arranged in the forcep sheath along an axial direction, and is connected to the forcep cups, and which opens/closes the forcep cups when moved in its axial direction; a first operation portion which is movably attached along an axial direction of a proximal end of the outer sheath, and is connected to a proximal end of the forcep sheath; and a second operation portion which is movably attached to the first operation portion along an axial direction of the proximal end of the forcep sheath, is connected to a proximal end of the operation wire, and is configured to receive a pressing operation by an operator, wherein the second operation portion is provided with an elastic member which returns the second operation portion to an original position when the pressing operation by the operator is released, the treatment tool further comprises an elastic member stopper, wherein the elastic member is sandwiched between the second operation portion and the elastic member stopper, and the elastic member stopper is positioned by a positioning mechanism in a plurality of axially spaced positions including a free position where the elastic member is not contacted by the second operation portion.