Lockout arrangements for surgical end effectors and replaceable tool assemblies
First Claim
Patent Images
1. A surgical end effector, comprising:
- a first jaw;
a second jaw rotatably coupled to said first jaw; and
a lockout arrangement configured to prevent rotational movement of said second jaw toward said first jaw unless an unfired staple cartridge is positioned in said first jaw, wherein said lockout arrangement comprises a pivotable lock configured to pivot between a locked orientation and an unlocked orientation, and wherein said pivotable lock comprises;
a first leg configured to engage said second jaw when said pivotable lock is in the locked orientation; and
a second leg configured to engage the unfired staple cartridge when the unfired staple cartridge is positioned in said first jaw, wherein the unfired staple cartridge is configured to move said pivotable lock into said unlocked orientation upon installation of the unfired staple cartridge in said first jaw.
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Accused Products
Abstract
Surgical end effectors are disclosed. The surgical end effectors can include a first jaw, a second jaw rotatably coupled to the first jaw, and a lockout arrangement configured to prevent rotational movement of the second jaw toward the first jaw unless an unfired staple cartridge is positioned in the first jaw. The lockout arrangement can comprise a pivotable lock configured to pivot between a locked orientation and an unlocked orientation, a shiftable lock bar, and/or a spring-loaded lockout lever.
6635 Citations
19 Claims
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1. A surgical end effector, comprising:
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a first jaw; a second jaw rotatably coupled to said first jaw; and a lockout arrangement configured to prevent rotational movement of said second jaw toward said first jaw unless an unfired staple cartridge is positioned in said first jaw, wherein said lockout arrangement comprises a pivotable lock configured to pivot between a locked orientation and an unlocked orientation, and wherein said pivotable lock comprises; a first leg configured to engage said second jaw when said pivotable lock is in the locked orientation; and a second leg configured to engage the unfired staple cartridge when the unfired staple cartridge is positioned in said first jaw, wherein the unfired staple cartridge is configured to move said pivotable lock into said unlocked orientation upon installation of the unfired staple cartridge in said first jaw. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A surgical end effector, comprising:
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a first jaw; a second jaw rotatably coupled to said first jaw; and a lockout arrangement configured to prevent rotational movement of said second jaw toward said first jaw unless an unfired staple cartridge is positioned in said first jaw, wherein said lockout arrangement comprises a pivotable lock configured to pivot between a locked orientation and an unlocked orientation, and wherein said pivotable lock comprises; a first leg configured to engage said second jaw when said pivotable lock is in the locked orientation; and a second leg configured to engage the unfired staple cartridge when the unfired staple cartridge is positioned in said first jaw, wherein a lockout notch is defined in said first jaw, and wherein said second leg is positioned at least partially in said lockout notch when said pivotable lock is in the unlocked orientation.
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8. A surgical end effector, comprising:
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a first jaw; a second jaw rotatably coupled to said first jaw; and a lockout arrangement configured to prevent rotational movement of said second jaw toward said first jaw unless an unfired staple cartridge is positioned in said first jaw, wherein said lockout arrangement comprises a pivotable lock configured to pivot between a locked orientation and an unlocked orientation, and wherein said pivotable lock comprises; a first leg configured to engage said second jaw when said pivotable lock is in the locked orientation; and a second leg configured to engage the unfired staple cartridge when the unfired staple cartridge is positioned in said first jaw, wherein said lockout arrangement comprises a second pivotable lock.
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9. An interchangeable surgical tool assembly, comprising:
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a staple cartridge; an end effector configured to receive said staple cartridge; and a shaft, comprising; a firing assembly, comprising; a distal portion; a proximal portion comprising a notch; and a spring intermediate said proximal portion and said distal portion; and a lockout lever movable between an unlocked orientation and a locked orientation, wherein said lockout lever extends into said notch when said lockout lever is in the locked orientation, and wherein a displacement of said distal portion of said firing assembly is configured to move said lockout lever to the unlocked orientation, wherein said staple cartridge comprises; a proximal end; a longitudinal slot extending distally from said proximal end; and a frangible gate extending across said longitudinal slot at said proximal end, wherein said frangible gate is configured to shift said distal portion of said firing assembly proximally when said staple cartridge is installed in said end effector. - View Dependent Claims (10, 11, 12, 13)
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14. An interchangeable surgical tool assembly, comprising:
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an end effector configured to receive a staple cartridge; and a shaft, comprising; a firing assembly, comprising; a distal portion; a proximal portion comprising a notch; and a spring intermediate said proximal portion and said distal portion; and a lockout lever movable between an unlocked orientation and a locked orientation, wherein said lockout lever extends into said notch when said lockout lever is in the locked orientation, and wherein a displacement of said distal portion of said firing assembly is configured to move said lockout lever to the unlocked orientation, wherein said shaft further comprises a reset spring configured to bias said lockout lever toward the locked orientation.
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15. An interchangeable surgical tool assembly, comprising:
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an end effector configured to receive a staple cartridge; and a shaft, comprising; a firing assembly, comprising; a distal portion; a proximal portion comprising a notch; and a spring intermediate said proximal portion and said distal portion; and a lockout lever movable between an unlocked orientation and a locked orientation, wherein said lockout lever extends into said notch when said lockout lever is in the locked orientation, and wherein a displacement of said distal portion of said firing assembly is configured to move said lockout lever to the unlocked orientation, wherein said distal portion of said firing assembly is advanced from a pre-fired proximal position to a distal position during a firing stroke and is retracted from said distal position to a post-fired proximal position after the firing stroke, and wherein the post-fired proximal position is distal to the pre-fired proximal position.
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16. A surgical end effector, comprising:
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a movable firing member comprising a cutting member; a first jaw; a second jaw rotatably coupled to said first jaw, wherein said second jaw comprises a pin movable between a locked configuration and an unlocked configuration; and a lockout arrangement configured to prevent rotational movement of said second jaw toward said first jaw unless a staple cartridge is positioned in said first jaw, wherein said lockout arrangement comprises a lock bar configured to translate relative to said movable firing member within the first jaw from a distal position to a proximal position when the staple cartridge is positioned in said first jaw, and wherein said lock bar is configured to move said pin to the unlocked configuration when said lock bar moves to the proximal position. - View Dependent Claims (17)
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18. A surgical end effector, comprising:
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a first jaw; a second jaw rotatably coupled to said first jaw, wherein said second jaw comprises a pin movable between a locked configuration and an unlocked configuration; a lockout arrangement configured to prevent rotational movement of said second jaw toward said first jaw unless a staple cartridge is positioned in said first jaw, wherein said lockout arrangement comprises a lock bar configured to translate within the first jaw from a distal position to a proximal position when the staple cartridge is positioned in said first jaw, and wherein said lock bar is configured to move said pin to the unlocked configuration when said lock bar moves to the proximal position; and a spring extending between said first jaw and said second jaw, wherein said spring is configured to bias said second jaw toward said first jaw. - View Dependent Claims (19)
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Specification