Patent ID: 8585698

Claim:
A treatment device for an endoscope comprising: an operating wire having a treatment section that performs a treatment on a tissue in a body cavity at a distal end thereof and being capable of being advanced or retreated in the direction of an axis; a first sheath through which the operating wire is inserted; a second sheath into which the first sheath is inserted and from a distal end of which the treatment section protrudes; a locking portion provided in the operating wire or the treatment section to advance or retreat in the direction of the axis with advance or retreat operation of the operating wire; a first stopper being provided in the first sheath via a connecting portion that extends toward the front side from a distal end of the first sheath, the first stopper regulating advance movement of the locking portion; a second stopper being provided in the second sheath on the rear side of the first stopper in the direction of the axis, the second stopper regulating retreat movement of the locking portion; and a sheath operating portion that advances or retreats the second sheath between a first positional relationship and a second positional relationship such that the second sheath has different positions relative to the first sheath in the direction of the axis.