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A staple cartridge can comprise a plurality of staples positioned within a cartridge body, wherein the cartridge body can comprise a tissue-contacting deck and a plurality of ridges extending from the tissue-contacting deck. The ridges can be configured to prevent, or reduce the possibility of, tiss

A staple cartridge can comprise a plurality of staples positioned within a cartridge body, wherein the cartridge body can comprise a tissue-contacting deck and a plurality of ridges extending from the tissue-contacting deck. The ridges can be configured to prevent, or reduce the possibility of, tissue from moving relative to the staple cartridge during use. The staple cartridge can further comprise a plurality of staple cavities, wherein each staple cavity can comprise an opening in the deck which is at least partially surrounded by a ridge. The ridges can comprise a uniform height or a height which varies along the length thereof. The height can vary relative to a proximal end and a distal end of the cartridge body and/or between the center of the cartridge body and the side.

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1. A staple cartridge comprising: a plurality of staples; anda cartridge body, comprising: a middle portion;a lateral portion;a tissue-contacting deck;a plurality of staple cavities, wherein a said staple is positioned in each said staple cavity; anda plurality of ridges extending from said tissue-c

1. A staple cartridge comprising: a plurality of staples; anda cartridge body, comprising: a middle portion;a lateral portion;a tissue-contacting deck;a plurality of staple cavities, wherein a said staple is positioned in each said staple cavity; anda plurality of ridges extending from said tissue-contacting deck, wherein each said ridge extends between said middle portion and said lateral portion, wherein said plurality of staple cavities comprises a first row of staple cavities housing a first row of staples and a second row of staple cavities housing a second row of staples, and wherein each said ridge extends along a line which transects said first row of staples and said second row of staples. 2. A staple cartridge, comprising: a plurality of staples; anda cartridge body, comprising: a tissue-contacting deck;a plurality of staple cavities, wherein each said staple cavity comprises an opening in said deck, and wherein a said staple is positioned in each said staple cavity; anda plurality of ridges extending from said tissue-contacting deck, wherein each said opening is at least partially surrounded by a said ridge, wherein each said ridge comprises an array of knurls, wherein said knurls cover the entirety of said tissue-contacting deck. 3. The staple cartridge of claim 2, wherein said knurls each comprise one of a pyramid-shaped configuration and a cone-shaped configuration. 4. A staple cartridge, comprising: a plurality of staples; anda cartridge body, comprising: a tissue-contacting deck;a plurality of staple cavities, wherein each said staple cavity comprises an opening in said deck, and wherein a said staple is positioned in each said staple cavity; anda plurality of ridges extending from said tissue-contacting deck, wherein each said opening is at least partially surrounded by a said ridge, wherein said plurality of staple cavities comprises a row of staple cavities housing a row of staples, and wherein said ridges are positioned intermediate the staple cavities in said row of staple cavities. 5. The staple cartridge of claim 4, wherein each said ridge comprises an X-shaped configuration. 6. A fastener cartridge, comprising: a plurality of fasteners; anda cartridge body, comprising: a tissue contacting deck;a row of fastener cavities, wherein each said fastener cavity comprises an opening in said deck, and wherein a said fastener is positioned in each said fastener cavity; anda plurality of projections extending from said deck, wherein each said opening is at least partially surrounded by a said projection, and wherein at least a portion of a said projection is positioned intermediate adjacent fastener cavities in said row of fastener cavities. 7. The fastener cartridge of claim 6, wherein each said opening is entirely encompassed by a said projection. 8. The fastener cartridge of claim 6, further comprising a plurality of fastener drivers configured to eject said fasteners from said fastener cavities, wherein each said fastener is supported by a said fastener driver, wherein each said fastener comprises at least one tip, and wherein said tips of said fasteners are positioned above said deck. 9. The fastener cartridge of claim 8, wherein each said projection comprises a top surface, and wherein said tips are positioned below said top surfaces. 10. The fastener cartridge of claim 6, wherein each said opening comprises a proximal end and a distal end, and wherein said projections surround said proximal ends and said distal ends. 11. The fastener cartridge of claim 10, wherein said cartridge body comprises a second row of fastener cavities housing a second row of fasteners, and wherein the projections surrounding the openings of said row of fastener cavities are connected to the projections surrounding the openings of said second row of fastener cavities. 12. A fastener cartridge, comprising: a plurality of fasteners; anda cartridge body, comprising: a proximal end;a distal end;a tissue contacting deck;a plurality of fastener cavities, wherein a said fastener is positioned in each said fastener cavity; anda plurality of projections extending from said deck, wherein at least a portion of a said projection is positioned between said fastener cavities, wherein each said projection comprises a height which varies between a proximal height and a distal height, and wherein said proximal height is closer to said proximal end than said distal height. 13. The fastener cartridge of claim 12, wherein said height of each said projection tapers between said proximal height and said distal height. 14. The fastener cartridge of claim 12, wherein each said fastener cavity comprises an opening in said deck, wherein each said opening comprises a proximal end and a distal end, and wherein said projections surround said proximal ends and said distal ends of said openings. 15. A fastener cartridge, comprising: a cartridge body, comprising: a tissue contacting deck;a plurality of fastener cavities at least partially defined in said deck; anda plurality of projections extending from said deck, wherein said projections are positioned intermediate said fastener cavities, and wherein said projections at least partially surround said fastener cavities; anda plurality of fasteners. 16. The fastener cartridge of claim 15, wherein each said projection comprises a slot configured to removably store at least a portion of a said fastener therein. 17. The fastener cartridge of claim 16, wherein said fastener cavities are aligned in one or more fastener rows, and wherein said projections are at least partially positioned within said fastener rows. 18. The fastener cartridge of claim 15, wherein each said fastener cavity comprises a proximal end and a distal end, and wherein said projections at least partially surround said proximal ends and said distal ends of said fastener cavities. 19. A fastener cartridge, comprising: a cartridge body, comprising: a tissue contacting deck;at least one row of fastener cavities extending between a proximal fastener cavity and a distal fastener cavity; anda plurality of projections, wherein said projections are at least partially positioned within said row of fastener cavities; anda plurality of fasteners. 20. The fastener cartridge of claim 19, wherein each said projection comprises a slot configured to removably store at least a portion of a said fastener therein. 21. The fastener cartridge of claim 20, wherein said projections at least partially surround said fastener cavities. 22. The fastener cartridge of claim 21, wherein each said fastener cavity comprises a proximal end and a distal end, and wherein said projections at least partially surround said proximal ends and said distal ends of said fastener cavities. 23. A fastener cavity, comprising: a plurality of fasteners; anda cartridge body, comprising: a tissue contacting deck;a row of fastener cavities, wherein a said fastener is positioned in each said fastener cavity, and wherein each said fastener cavity comprises a rim; anda plurality of projections extending from said deck, wherein said projections are positioned intermediate said fastener cavities, and wherein said projections extend along at least a portion of said rims of said fastener cavities. 24. The fastener cartridge of claim 23, wherein each said fastener cavity comprises a proximal end and a distal end, and wherein said projections extend along said rims at said proximal ends and said distal ends of said fastener cavities. 25. The fastener cartridge of claim 23, wherein each said projection comprises a height which varies between a proximal height and a distal height.