An endoscopic instrument according to the present invention includes: a wire disposed in a flexible sheath and capable of freely projecting relative to the flexible sheath, the distal end of the wire expanding in radius to form a loop section or a basket section upon being projected from the sheath and a fixture cylinder for fixing the inserted proximal end of the wire, wherein the fixture cylinder is provided with a wire-radius-increasing-direction-regulating section for regulating the direction in which the radius of the wire increases and a wire-fixing section, disposed in the vicinity of the proximal end relative to the wire-radius-increasing-direction-regulating section, for fixing the wire.
