Staple forming pocket arrangements
First Claim
1. A stapling assembly, comprising:
- a first jaw;
a second jaw movable relative to said first jaw;
a staple cartridge comprising a plurality of staples, wherein each said staple is comprised of a wire defined by a staple diameter, and wherein each said staple comprises staple legs; and
an anvil configured to deform said staples, said anvil comprising;
a planar surface; and
a pair of forming pockets defined in said planar surface, wherein said pair of forming pockets is configured to deform the staple legs of a said staple, and wherein said pair of forming pockets comprises;
a proximal forming pocket comprising a forming surface, wherein said forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;
1 to 3;
1, and wherein said first radius of curvature is between 8 times and 10 times larger than said staple diameter; and
a distal forming pocket.
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Accused Products
Abstract
In various embodiments, a stapling assembly is disclosed. The stapling assembly comprises, among other things, an anvil configured to deform staples. The anvil comprises a tissue-engaging surface and a pair of forming pockets defined in the tissue engaging surface, wherein the pair of forming pockets is configured to deform the legs of a staple. The forming pockets comprise, one, a proximal forming pocket comprising a forming surface, wherein the forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein the first radius of curvature and the second radius of curvature comprise a ratio of 1.5:1 to 3:1, and wherein the first radius of curvature is between 8 times and 10 times larger the staple diameter and, two, a distal forming pocket.
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Citations
25 Claims
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1. A stapling assembly, comprising:
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a first jaw; a second jaw movable relative to said first jaw; a staple cartridge comprising a plurality of staples, wherein each said staple is comprised of a wire defined by a staple diameter, and wherein each said staple comprises staple legs; and an anvil configured to deform said staples, said anvil comprising; a planar surface; and a pair of forming pockets defined in said planar surface, wherein said pair of forming pockets is configured to deform the staple legs of a said staple, and wherein said pair of forming pockets comprises; a proximal forming pocket comprising a forming surface, wherein said forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;
1 to 3;
1, and wherein said first radius of curvature is between 8 times and 10 times larger than said staple diameter; anda distal forming pocket. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A stapling assembly, comprising:
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a first jaw; a second jaw movable relative to said first jaw; a staple cartridge comprising a plurality of staples, wherein each said staple comprises a pair of staple legs extending from a staple base, and wherein said staple base comprises a staple base length; and an anvil configured to deform said staples, said anvil comprising; a tissue-engaging surface; and a pair of forming pockets defined in said tissue-engaging surface, wherein said pair of forming pockets is configured to deform the legs of a said staple, and wherein said pair of forming pockets comprises; a proximal forming pocket comprising a forming surface, wherein said forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;
1 to 3;
1, and wherein said first radius of curvature is greater than about 0.6 times said staple base length; anda distal forming pocket. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A stapling assembly, comprising:
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a first jaw; a second jaw movable relative to said first jaw; a fastener cartridge comprising a plurality of fasteners, wherein each said fastener is comprised of a wire having a wire diameter, and wherein each said fastener comprises fastener legs; and an anvil configured to deform said fasteners, said anvil comprising; a tissue-engaging surface; and first and second fastener forming features defined in said tissue-engaging surface, wherein said first and second fastener forming features are configured to deform the legs of a said fastener, and wherein said first and second fastener forming features comprises; a first forming feature comprising a forming surface, wherein said forming surface comprises an entry region comprising a first radius of curvature and an exit region comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.2;
1 to 3.3;
1, and wherein said first radius of curvature is between about 7 times and about 11 times larger than said wire diameter; anda second forming feature. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A fastening assembly, comprising:
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a first jaw; a second jaw movable relative to said first jaw; a fastener cartridge comprising a plurality of fasteners, wherein each said fastener comprises a fastener diameter, and wherein each said fastener comprises fastener legs; and an anvil configured to deform said fasteners, wherein said anvil comprises a pair of forming pockets defined in said anvil, wherein said pair of forming pockets is configured to deform said fastener legs of a said fastener, and wherein said pair of forming pockets comprises; a first forming pocket comprising a forming surface, wherein said forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;
1 to 3;
1, and wherein said first radius of curvature is between 8 times and 10 times larger than said fastener diameter; anda second forming pocket.
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24. A stapling assembly, comprising:
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a first jaw; a second jaw movable relative to said first jaw; a staple cartridge comprising a plurality of staples, wherein each said staple comprises a pair of staple legs extending from a staple base, and wherein said staple base comprises a staple base length; and a staple-forming surface configured to deform said staples, wherein said staple-forming surface comprises; a tissue-engaging surface; and forming pockets defined in said tissue-engaging surface, wherein said forming pockets are configured to deform said staple legs of a said staple, and wherein said forming pockets comprise; a proximal forming pocket comprising a forming surface, wherein said forming surface comprises an entry surface comprising a first radius of curvature and an exit surface comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;
1 to 3;
1, and wherein said first radius of curvature is greater than about 0.6 times said staple base length; anda distal forming pocket.
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25. An anvil for use with a stapling instrument, wherein said anvil is configured to deform a fastener of the stapling instrument, wherein the fastener comprises a fastener diameter and fastener legs, and wherein said anvil comprises:
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a tissue-engaging surface; and forming pockets defined in said tissue-engaging surface, wherein said forming pockets are configured to deform the legs of the fastener, and wherein said forming pockets comprise; a first forming feature comprising a forming surface, wherein said forming surface comprises an entry region comprising a first radius of curvature and an exit region comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.2;
1 to 3.3;
1, and wherein said first radius of curvature is between about 7 times and about 11 times larger than the fastener diameter; anda second forming feature.
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Specification