PURPOSE: To extremely improve the operation ability when a stapler needle is extracted and also enable the stapler needle to be extracted quickly.

CONSTITUTION: The needle extract part of a stapler device is provided with a needle extract piece 4d formed in a taper shape inclined so as to thicken as it is positioned more base end side by projecting the needle extract piece 4d on the base end of a base frame 4b integrally and press-processing a rib 4e on the needle extract piece 4d.