Surgical stapling head assembly with firing lockout for a surgical stapler

摘要

In various embodiments, a surgical stapling head is provided that may comprise a staple cartridge for supporting one or more staples, a core movable relative to the staple cartridge, at least one staple driver extending from the core, and a casing configured to at least partially hold the staple cartridge and movably receive the core and the staple driver(s). The casing may further comprise at least one retention member that is configured to move from a first position to a second position when sufficient external force is applied to the retention member, such as that provided by a shaft of a surgical stapler during insertion of the stapling head assembly into the shaft. When the retention member(s) are at the second position, the staple driver(s) may be prevented from driving staples from the staple cartridge, thereby providing a firing lockout feature to the stapling head assembly during insertion into at least a portion of a surgical stapler.

主权项

1. A surgical instrument, comprising:
a shaft portion; and an end effector releasably couplable to said shaft portion, said end effector, comprising:
an actuation member movably supported within said end effector, said actuation member movable from an unactuated position to an actuated position; anda retention member releasably engageable by said shaft portion, wherein said retention member is movable from a first position to a second position by said shaft portion, wherein said retention member, at said first position, is configured to prevent said actuation member from moving from said unactuated position to said actuated position.