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US 10,743,881 B2Granted
Circular stapling instruments
AssigneeCovidien LP
InventorKeith L. Milliman
Life of this patent
Estimating the term…
Abstract
A circular stapling instrument including a stapling forming assembly that is actuated independently from actuation of the cutting assembly is provided. The instrument includes a handle assembly, an elongate body extending from the handle assembly, a cartridge assembly mounted on a distal end of the elongate body. The cartridge assembly includes a pusher assembly and a knife assembly. The knife assembly is selectively fixed relative to the pusher assembly.
Claims17
A cartridge assembly for a circular stapler, the cartridge assembly comprising:
- a housing;
- a staple cartridge supported on the housing and including a plurality of staples arranged in an annular array;
- a pusher assembly operably disposed within the housing and configured to eject the staples from the staple cartridge;
- and
- a knife assembly operably disposed within the housing, the knife assembly including a knife pusher and a knife, the knife being selectively fixed relative to the knife pusher and the pusher assembly, wherein the knife pusher and the pusher assembly are mounted for independent movement relative to the knife, the knife pusher being disposed outward of the knife during a first actuation of the cartridge assembly such that the knife pusher moves over the knife, and the knife pusher engaging the knife during a second actuation of the cartridge assembly.
2 more elements
Dependencies are inferred from the claim text.