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US 10,881,408 B2Granted
Interlock assembly for replaceable loading units
AssigneeCovidien LP
InventorsChristopher Penna, Michael Bettuchi
Life of this patent
Estimating the term…
Abstract
A loading unit including interlock assembly for attaching the loading unit to a surgical stapling instrument is provided. The interlock assembly is formed on a proximal end of a shell member and includes a collar member pivotally secured to the shell member. The collar member selectively secures the shell member to the adapter assembly.
Claims20
A loading unit including an interlock assembly for attaching the loading unit to a surgical stapling instrument, the loading unit comprising:
- a shell member including a proximal end and a distal end, the shell member including a cylindrical portion formed on the proximal end of the shell member, the cylindrical portion defining an outer circumference, the distal end of the shell member configured for supporting a staple cartridge defining a plurality of staple retaining slots arranged in a pair of concentric rows, the cylindrical portion defining an opening formed therein;
- and
- a collar member pivotally secured to the cylindrical portion, the collar member including a locking shelf selectively receivable within the opening of the cylindrical portion of the shell member, wherein:
- the locking shelf is spaced from the opening of the cylindrical portion when the collar member is in an open position;
- and
- the locking shelf is received through the opening in the cylindrical portion and the collar member is disposed within the outer circumference of the cylindrical portion when the collar member is in a closed position.
3 more elements
A loading unit selectively connectable to a distal end of a surgical stapling instrument, the loading unit comprising:
- a shell member including a proximal end and a distal end, the shell member including a cylindrical portion formed on the proximal end thereof, the cylindrical portion defining a recessed portion and an opening in communication with the recessed portion;
- a staple cartridge defining a plurality of staple retaining slots arranged in a pair of concentric rows supported on the distal end of the shell member;
- a plurality of staples received within the staple retaining slots;
- and
- a collar member pivotally secured to the cylindrical portion, the collar member being selectively receivable in the recessed portion of the cylindrical portion and including a locking shelf selectively receivable within the opening of the cylindrical portion of the shell member when the collar member is received within the recessed portion.
2 more elements
Dependencies are inferred from the claim text.