Surgical Stapler/Cutter and Extended Buttress

A surgical stapler for stapling and resecting at least one section tissue comprising:

• a body, a shaft assembly, and an end effector, wherein the end effector comprises a lower jaw configured to receive a staple cartridge, an anvil pivotable toward and away from the lower jaw, and a translatable knife member;
• a disposable cartridge installed in the lower jaw, said cartridge containing a plurality of deployable staples in arrays separated by a tissue resection channel through which the knife member can translate;
• said anvil having a plurality of staple forming pockets aligned with said deployable staples;
• a surgical buttress at least partially disposed on a tissue facing surface of at least one of the cartridge or the anvil,
• said buttress having width substantially larger than width of said tissue facing surfaces;
• said buttress comprising a first portion positioned over the deployable staples or over the staple forming pockets, and at least one flap portion not positioned over the deployable staples or over the staple forming pockets;
• said flap portion folded or rolled on itself and unfurlable and wrappable about the resected tissue.