Knife retraction arm for a curved cutter stapler
First Claim
1. A surgical instrument for cutting and applying a plurality of surgical fasteners in the same direction to body tissue, the surgical instrument comprising:
- a frame having a proximal end and a distal end, with a handle positioned at the proximal end and an end effector positioned at the distal end;
the end effector being shaped and dimensioned for supporting a selectively removable cartridge housing and an anvil, the cartridge housing and anvil being relatively movable between a first spaced apart position and a second position in close approximation with one another, and the cartridge housing includes a knife structure adapted for cutting tissue by moving between the cartridge housing and the anvil;
a firing mechanism is associated with the end effector and the cartridge housing for selective actuation of the knife structure and surgical fasteners for movement in the same direction;
the knife structure includes a rearwardly facing coupling member shaped and dimensioned for engaging a distal end of the firing mechanism as the cartridge housing is loaded into the end effector of the surgical instrument and wherein the firing mechanism includes an upwardly facing knife retraction hook shaped and dimensioned to engage the coupling member of the knife structure as the cartridge housing is loaded within the end effector.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical instrument for cutting and applying a plurality of surgical fasteners in the same direction to body tissue includes a frame having a proximal end and a distal end, with a handle positioned at the proximal end and an end effector positioned at the distal end. The end effector is shaped and dimensioned for supporting a cartridge housing and an anvil. The cartridge housing and anvil are relatively movable between a first spaced apart position and a second position in close approximation with one another, and the cartridge housing includes a knife structure adapted for cutting tissue by moving between the cartridge housing and the anvil. The instrument also includes a firing mechanism associated with the end effector and the cartridge housing for selective actuation of the knife structure and surgical fasteners for movement in the same direction. The knife structure includes a rearwardly facing coupling member shaped and dimensioned for engaging a distal end of the firing mechanism as the cartridge housing is loaded into the end effector of the surgical instrument.
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Citations
18 Claims
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1. A surgical instrument for cutting and applying a plurality of surgical fasteners in the same direction to body tissue, the surgical instrument comprising:
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a frame having a proximal end and a distal end, with a handle positioned at the proximal end and an end effector positioned at the distal end; the end effector being shaped and dimensioned for supporting a selectively removable cartridge housing and an anvil, the cartridge housing and anvil being relatively movable between a first spaced apart position and a second position in close approximation with one another, and the cartridge housing includes a knife structure adapted for cutting tissue by moving between the cartridge housing and the anvil; a firing mechanism is associated with the end effector and the cartridge housing for selective actuation of the knife structure and surgical fasteners for movement in the same direction; the knife structure includes a rearwardly facing coupling member shaped and dimensioned for engaging a distal end of the firing mechanism as the cartridge housing is loaded into the end effector of the surgical instrument and wherein the firing mechanism includes an upwardly facing knife retraction hook shaped and dimensioned to engage the coupling member of the knife structure as the cartridge housing is loaded within the end effector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cartridge module selective loading within and removal from an end effector of for a surgical instrument having a firing mechanism for cutting and applying a plurality of surgical fasteners in the same direction to body tissue, the cartridge module comprising:
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a cartridge housing and an anvil, an anvil arm connects the cartridge housing to the anvil to create an integral cartridge module composed of the cartridge housing and the anvil, the cartridge housing and anvil being relatively movable between a first spaced apart position and a second position in close approximation with one another, and the cartridge housing includes a knife structure adapted for cutting tissue by moving between the cartridge housing and the anvil; the knife structure includes a rearwardly facing coupling member shaped and dimensioned for selectively coupling a distal end of the firing mechanism as the cartridge housing is loaded into the end effector of the surgical instrument. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification