Fastener cartridge comprising a releasably attached tissue thickness compensator

A staple cartridge, comprising:

• a cartridge body;
• a plurality of staples removably stored within said cartridge body;
• a tissue thickness compensator, comprising:
• a first end;
• a second end;
• a compressible portion, wherein said staples are configured to capture at least a portion of said compressible portion therein when said staples are moved from an unfired position to a fired position;
• and
• a detent portion;
• and
• a firing member at least partially stored within said cartridge body, wherein said firing member is movable from said first end of said tissue thickness compensator toward said second end, wherein said firing member is configured to move said staples from said unfired position to said fired position, and wherein said detent portion is configured to releasably hold said firing member in position.

A staple cartridge, comprising:

• a cartridge body comprising a distal clamp portion;
• a plurality of staples removably stored within said cartridge body;
• and
• a tissue thickness compensator, comprising:
• a compressible portion, wherein said staples are configured to capture at least a portion of said compressible portion therein when said staples are moved from an unfired position to a fired position, and wherein said compressible portion comprises a first end and a second end;
• and
• a support portion, wherein said compressible portion is mounted to said support portion, wherein said support portion is configured to resist the movement of said first end relative to said second end, wherein said support portion comprises a tab extending from said second end, and wherein said tab is removably positioned within said distal clamp portion.