Releasable layer of material and surgical end effector having the same

An end effector assembly for use with a surgical instrument, the end effector assembly comprising:

• a fastener cartridge, comprising:
• a plurality of fasteners removably positioned in said fastener cartridge, wherein each said fastener is configured to move from an unfired position to a fired position;
• a first notch on a first side of said fastener cartridge;
• and
• a second notch on a second side of said fastener cartridge;
• and
• a layer of material releasably secured to said fastener cartridge, wherein said layer of material is at least partially captured by said fasteners when said fasteners move from said unfired position to said fired position, and wherein said layer of material comprises:
• a first mount on a first side;
• and
• a second mount on a second side, wherein said first mount extends into said first notch and said second mount extends into said second notch when said layer of material is secured to said fastener cartridge.

An end effector assembly for use with a surgical instrument, the end effector assembly comprising:

• an anvil;
• a fastener cartridge comprising:
• a deck;
• a plurality of cavities defined in said deck;
• and
• a plurality of fasteners, wherein each said fastener is removably positioned in a said cavity, and wherein said fasteners are configured to move from an unfired position to a fired position;
• and
• a layer of material releasably secured between said anvil and said fastener cartridge, wherein said fasteners are configured to capture at least a portion of said layer of material when said fasteners move from said unfired position to said fired position, wherein said layer of material comprises a perimeter, and wherein said perimeter comprises a scalloped portion.