Fastener cartridge comprising a releasably attached tissue thickness compensator

摘要

A fastener cartridge can comprise a cartridge body and a layer, such as a tissue thickness compensator, for example, releasably attached to the cartridge body. The tissue thickness compensator can comprise a compressible first portion and a second support portion. The second portion can be rigid and can support the first portion when mounted thereto. The properties of the first portion and/or the second portion can be selected so as to prevent the premature deflection and release from the cartridge body. The fastener cartridge can further comprise one or more attachment portions configured to releasably hold the tissue thickness compensator to the cartridge body. The attachment portions can be configured to permit a firing member to pass therethrough. In some circumstances, the tissue thickness compensator can be configured to hold the firing member in an unfired position until a sufficient firing force has been applied to the firing member.

主权项

1. A staple cartridge, comprising:
a cartridge body; 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 during a firing stroke, and wherein said compressible portion comprises a first end and a second end; andan implantable severable rigid support portion extending through said compressible portion, wherein said implantable rigid support portion is configured to resist the movement of said first end relative to said second end before and during said firing stroke.