Staple cartridge assembly including features for controlling the rotation of staples when being ejected therefrom
First Claim
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1. A staple cartridge assembly for stapling tissue, comprising:
- a cartridge body comprising a proximal end and a distal end;
a plurality of staple cavities, wherein each said staple cavity comprises;
a top opening;
a proximal wall; and
a distal wall;
a firing member; and
a plurality of staples positioned in said staple cavities, wherein each said staple comprises;
a base;
a proximal leg extending from said base;
a distal leg extending from said base; and
a center of mass defined in said base, wherein said distal wall provides a distal reaction force to said staple above said center of mass and said proximal wall provides a proximal reaction force to said staple below said center of mass wherein said staple is lifted toward said top opening by said firing member,wherein said firing member is configured to eject said staples from said staple cavities, and wherein said firing member is configured to contact a foot of any staple that is misoriented within its staple cavity prior to ejecting the misoriented staple from its staple cavity.
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Abstract
A staple cartridge is disclosed which comprises a cartridge body, staples cavities defined in the cartridge body, and staples removably stored in the staple cavities. The staple cartridge comprises features for properly aligning and preventing the misalignment of the staples within the staple cavities.
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Citations
21 Claims
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1. A staple cartridge assembly for stapling tissue, comprising:
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a cartridge body comprising a proximal end and a distal end; a plurality of staple cavities, wherein each said staple cavity comprises; a top opening; a proximal wall; and a distal wall; a firing member; and a plurality of staples positioned in said staple cavities, wherein each said staple comprises; a base; a proximal leg extending from said base; a distal leg extending from said base; and a center of mass defined in said base, wherein said distal wall provides a distal reaction force to said staple above said center of mass and said proximal wall provides a proximal reaction force to said staple below said center of mass wherein said staple is lifted toward said top opening by said firing member, wherein said firing member is configured to eject said staples from said staple cavities, and wherein said firing member is configured to contact a foot of any staple that is misoriented within its staple cavity prior to ejecting the misoriented staple from its staple cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A staple cartridge assembly for stapling tissue, comprising:
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a cartridge body, comprising; a proximal end; a distal end; and a plurality of staple cavities; a plurality of staples positioned in said staple cavities, wherein said staple comprises; a base defining a drive plane; and a leg extending from said base, wherein said leg extends to a side of said drive plane; a firing member configured to eject said staples from said staple cavities; and means for reducing the rotation of said staples within said staple cavities when said firing member is driving said staples out of said staple cavities. - View Dependent Claims (11)
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12. A fastener cartridge assembly for fastening tissue, comprising:
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a cartridge body, comprising; a proximal end; a distal end; and a deck; a plurality of fastener cavities, wherein each said fastener cavity comprises; a top opening defined in said deck; a proximal wall extending from said top opening; and a distal wall extending from said top opening; a firing member; and a plurality of fasteners positioned in said fastener cavities, wherein each said fastener comprises; a foot; a crown; a proximal leg extending from said crown; a distal leg extending from said crown; and a center of mass defined in said crown, wherein said distal wall provides a distal reaction force to said fastener above said center of mass and said proximal wall provides a proximal reaction force to said fastener below said center of mass wherein said fastener is ejected toward said top opening by said firing member, wherein said firing member configured to eject said fasteners from said fastener cavities, and wherein said firing member is configured to contact said foot of any fastener that is misoriented within its fastener cavity prior to ejecting the misoriented fastener from its fastener cavity. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification