A surgical apparatus for treating tissues, the surgical apparatus comprising a shaft and an end effector attached to the shaft, the end effector comprising a staple holder and an anvil, the surgical apparatus further comprising a feeder belt extending into the staple holder, the feeder belt carrying a plurality of staples frangibly connected to the feeder belt, each of the plurality of staples having a free end, the anvil comprising an inner surface oriented toward the staple holder, the inner surface defining a plurality of staple forming pockets, the plurality of staple forming pockets and plurality of staples being arranged such that, during deployment of the plurality of staples, the free end of each staple contacts the anvil in one of the plurality of staple forming pockets to close the staple.