| abstract |
A surgical instrument comprising an end effector is disclosed. The end effector comprises a staple cartridge including a cartridge body comprising an annular array of staple cavities, staples removably stored in the staple cavities, a firing drive configured to eject the staples from the staple cavities, and a cutting member circumscribed by the staple cavities. The end effector further comprises an anvil including a tissue compression surface, forming surfaces configured to deform the staples and a tissue block for controlling the flow of tissue. The anvil is movable toward the cartridge body to compress tissue between the cartridge body and the tissue block during a closure stroke and the cutting member is configured to incise the tissue and the tissue block during a cutting stroke of the cutting member. The tissue block holds the tissue in position while it is being incised. |