Interlock assemblies for replaceable loading unit
First Claim
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1. An interlock assembly for attaching a loading unit to a surgical stapling instrument, the interlock assembly comprising:
- a shell member having a proximal end defining a pair of openings and a distal end supporting a staple cartridge defining a plurality of staple retaining slots arranged in a pair of concentric rows; and
an adapter assembly including a distal end securable to the proximal end of the shell member, the adapter assembly including a pair of arms each including a protrusion on a free end thereof, wherein each of the protrusions are received within the pair of openings when the distal end of the adapter assembly is received within the proximal end of the shell member.
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Abstract
Interlock assemblies for attaching a loading unit to a surgical stapling instrument are provided. The interlock assemblies are formed on a proximal end of a shell member and on a distal end of an adapter assembly. The interlock assemblies may include a collar member for selectively securing the shell member to the adapter assembly. The collar member may be mounted on the shell member or on the adapter assembly.
595 Citations
10 Claims
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1. An interlock assembly for attaching a loading unit to a surgical stapling instrument, the interlock assembly comprising:
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a shell member having a proximal end defining a pair of openings and a distal end supporting a staple cartridge defining a plurality of staple retaining slots arranged in a pair of concentric rows; and an adapter assembly including a distal end securable to the proximal end of the shell member, the adapter assembly including a pair of arms each including a protrusion on a free end thereof, wherein each of the protrusions are received within the pair of openings when the distal end of the adapter assembly is received within the proximal end of the shell member. - View Dependent Claims (2, 3, 4, 5)
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6. A surgical stapling instrument including an interlock assembly, the surgical stapling instrument comprising:
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an elongate body portion having a distal end including first and second arms each including a protrusion on a free end thereof; and a shell member releasably secured to the elongate body portion, the shell member including a proximal end defining first and second openings and a distal end supporting a staple cartridge, wherein the protrusions of the elongate body portion are received within the first and second openings of the shell member when the shell member is received about the distal end of the elongate body portion to releasably secure the shell member to the elongate body portion. - View Dependent Claims (7, 8, 9, 10)
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Specification