Control surfaces on a staple driver of a surgical staple cartridge
A surgical instrument comprising a staple cartridge including a cartridge body, staples removably stored in the cartridge body, and staple drivers movable within the cartridge body to eject, or deploy, the staples from the cartridge body is disclosed herein. The staple drivers and the cartridge body comprise control surfaces that promote the efficient deployment of the staples from the cartridge body.
1 . A staple cartridge, comprising:
a cartridge body, comprising:
a proximal end;
a distal end;
a longitudinal axis extending between said proximal end and said distal end;
a first longitudinal row of staple cavities comprising a first staple cavity, wherein said first staple cavity comprises a first proximal cavity end and a first distal cavity end; and
a second longitudinal row of staple cavities comprising a second staple cavity, wherein said second staple cavity comprises a second proximal cavity end and a second distal cavity end;
a first staple removably stored in said first staple cavity;
a second staple removably stored in said second staple cavity; and
a staple driver, comprising:
a first drive pillar comprising a first seat, wherein said first drive pillar is translatable within said first staple cavity during a staple firing stroke, wherein said first drive pillar is configured to drive said first staple during said staple firing stroke, and wherein said first drive pillar comprises a first distal driver end and a first proximal driver end; and
a second drive pillar comprising a second seat, wherein said second drive pillar is translatable within said second staple cavity during said staple firing stroke, wherein said second drive pillar is configured to drive said second staple during said staple firing stroke, wherein said second drive pillar comprises a second distal driver end and a second proximal driver end, wherein said first distal driver end of said first drive pillar and said second proximal driver end of said second drive pillar are engaged with said cartridge body to inhibit rotation of said staple driver relative to said cartridge body, and wherein said first proximal driver end and said second distal driver end are not engaged with said cartridge body.
2 . The staple cartridge of claim 1 , wherein said first distal driver end of said first drive pillar and said second proximal driver end of said second drive pillar co-operatively grip said cartridge body to inhibit the rotation of said staple driver relative to said cartridge body.
3 . The staple cartridge of claim 1 , wherein said staple driver further comprises a connector connecting said first drive pillar and said second drive pillar, and wherein said connector comprises a flexible region that permits said first drive pillar and said second drive pillar to grip said cartridge body.
4 . The staple cartridge of claim 1 , wherein said cartridge body further comprises a third longitudinal row of staple cavities comprising a third staple cavity, wherein said third staple cavity comprises a third proximal cavity end and a third distal cavity end, wherein said staple cartridge further comprises a third staple removably stored in said third staple cavity, wherein said staple driver further comprises a third drive pillar comprising a third distal driver end and a third seat, wherein said third drive pillar is translatable within said third staple cavity to drive said third staple during said staple firing stroke, and wherein said third distal driver end is engaged with said cartridge body to inhibit the rotation of said staple driver relative to said cartridge body.
5 . The staple cartridge of claim 4 , wherein said second longitudinal row of staple cavities is positioned intermediate said first longitudinal row of staple cavities and said third longitudinal row of staple cavities.
6 . The staple cartridge of claim 4 , wherein said third drive pillar comprises a third proximal driver end, and wherein said third proximal driver end is not engaged with said cartridge body.
7 . A staple cartridge, comprising:
a cartridge body, comprising:
a proximal end;
a distal end;
a longitudinal axis extending between said proximal end and said distal end;
a deck configured to support patient tissue;
a first longitudinal row of staple cavities defined in said deck; and
a second longitudinal row of staple cavities defined in said deck;
a plurality of first staples removably stored in said first longitudinal row of first staple cavities;
a plurality of second staples removably stored in said second longitudinal row of second staple cavities;
a longitudinal row of staple drivers, comprising:
a first staple driver translatable within a first staple cavity and a second staple cavity, wherein said first staple cavity is in said first longitudinal row of staple cavities and said second staple cavity is in said second longitudinal row of staple cavities; and
a second staple driver translatable within a third staple cavity and a fourth staple cavity, wherein said third staple cavity is in said first longitudinal row of staple cavities and said fourth staple cavity is in said second longitudinal row of staple cavities, and wherein said first staple driver is positioned proximally with respect to said second staple driver; and
a sled configured to lift said first staple driver from an unlifted position to a lifted position during a staple firing stroke, wherein said first staple driver is in contact with said cartridge body and said second staple driver when said first staple driver is in said lifted position.
8 . The staple cartridge of claim 7 , wherein said first staple driver comprises a first drive pillar that is configured to translate within said first staple cavity and a second drive pillar that is configured to translate within said second staple cavity during said staple firing stroke, wherein said first drive pillar comprises a first seat configured to drive a staple of said plurality of first staples and said second drive pillar comprises a second seat configured to drive a staple of said plurality of second staples during said staple firing stroke, wherein said first drive pillar is engaged with said cartridge body when said first staple driver is in said lifted position, and wherein said second drive pillar is engaged with said second staple driver when said first staple driver is in said lifted position.
9 . The staple cartridge of claim 8 , wherein said first drive pillar is engaged with said cartridge body and said second drive pillar is engaged with said second staple driver when said first staple driver is in said unlifted position.
10 . The staple cartridge of claim 8 , wherein said second drive pillar is not engaged with said second staple driver when said first staple driver is in said unlifted position.
11 . The staple cartridge of claim 8 , wherein said cartridge body further comprises a third longitudinal row of staple cavities defined in said deck, wherein said staple cartridge further comprises a plurality of third staples removably stored in said third longitudinal row of staple cavities, wherein said first staple driver further comprises a third drive pillar that is configured to translate within a fifth staple cavity during said staple firing stroke, wherein said fifth staple cavity is in said third longitudinal row of staple cavities, wherein said third drive pillar comprises a third seat configured to drive a staple of said plurality of third staples during said staple firing stroke, and wherein said third drive pillar is engaged with said cartridge body when said first staple driver is in said lifted position.
12 . The staple cartridge of claim 11 , wherein said second drive pillar is positioned intermediate said first drive pillar and said third drive pillar.
13 . The staple cartridge of claim 8 , wherein said cartridge body further comprises a third longitudinal row of staple cavities defined in said deck, wherein said staple cartridge further comprises a plurality of third staples removably stored in said third longitudinal row of staple cavities, wherein said first staple driver further comprises a third drive pillar that is configured to translate within a fifth staple cavity during said staple firing stroke, wherein said fifth staple cavity is in said third longitudinal row of staple cavities, wherein said third drive pillar comprises a third seat configured to drive a staple of said plurality of third staples during said staple firing stroke, and wherein said third drive pillar is engaged with said second staple driver when said first staple driver is in said lifted position.
14 . The staple cartridge of claim 13 , wherein said second drive pillar is positioned intermediate said first drive pillar and said third drive pillar.