Lockout mechanisms and surgical instruments including same
First Claim
1. A surgical instrument comprising:
- a handle portion operably configured to produce a firing motion;
a channel coupled to the handle portion;
an anvil pivotally attached to the channel;
a staple cartridge engaged by the channel and including a plurality of staple drivers and staples, the staple drivers for camming the staples toward the anvil;
a wedge member proximal to and longitudinally aligned with the staple drivers;
a reciprocating firing device responsive to the firing motion to progressively drive the wedge member from an unfired position to a fired position; and
a lockout arm pivotally attached to the channel and operably configured to pivot between a locked position and an unlocked position with respect to the firing device based upon a position of the wedge member.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical instrument is disclosed. The surgical instrument includes a handle portion, a channel, an anvil, and staple cartridge, a wedge member, a reciprocating firing device, and a lockout arm. The handle portion is operably configured to produce a firing motion and is coupled to the channel portion. The staple cartridge is engaged by the channel and includes a plurality of staple drivers to cam the staples toward the anvil, which is pivotally attached to the channel. The wedge member is proximal to and longitudinally aligned with the staple drivers, and the reciprocating firing device is responsive to the firing motion to progressively drive the wedge member from an unfired to a fired position. The lockout arm is pivotally attached to the channel and operably configured to pivot between a locked position and an unlocked position with respect to the firing device based upon a position of the wedge member.
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Citations
23 Claims
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1. A surgical instrument comprising:
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a handle portion operably configured to produce a firing motion;
a channel coupled to the handle portion;
an anvil pivotally attached to the channel;
a staple cartridge engaged by the channel and including a plurality of staple drivers and staples, the staple drivers for camming the staples toward the anvil;
a wedge member proximal to and longitudinally aligned with the staple drivers;
a reciprocating firing device responsive to the firing motion to progressively drive the wedge member from an unfired position to a fired position; and
a lockout arm pivotally attached to the channel and operably configured to pivot between a locked position and an unlocked position with respect to the firing device based upon a position of the wedge member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A surgical instrument comprising:
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a handle portion operably configured to produce a firing motion;
a channel coupled to the handle portion;
an anvil pivotally attached to the channel;
a staple cartridge engaged by the channel and including a plurality of staple drivers and staples, the staple drivers for camming the staples toward the anvil;
a wedge member proximal to and longitudinally aligned with the staple drivers;
a reciprocating firing device responsive to the firing motion to progressively drive the wedge member from an unfired position to a fired position; and
at least one lockout assembly positioned in the channel and adjacent to a corresponding lateral surface of the firing device, each lockout assembly comprising a lockout cartridge moveably disposed within a corresponding recess defined by the channel, wherein the lockout cartridge is configured to move between a locked position and an unlocked position with respect to the firing device based upon a position of the wedge member. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A surgical instrument comprising:
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a handle portion operably configured to produce a firing motion;
a channel coupled to the handle portion;
an anvil pivotally attached to the channel;
a staple cartridge engaged by the channel and including a plurality of staple drivers and staples, the staple drivers for camming the staples toward the anvil;
a wedge member proximal to and longitudinally aligned with the staple drivers; and
a reciprocating firing device responsive to the firing motion to progressively drive the wedge member from an unfired position to a fired position, wherein the firing device comprises a distal portion, a proximal portion, and pivot means connecting the proximal and distal portions, wherein distal portion is configured to pivot between a locked position and an unlocked position with respect to the channel based upon a position of the wedge member. - View Dependent Claims (17, 18, 19, 20)
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21. An end effector for use with a surgical instrument, the end effector comprising:
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a channel configured for receiving a staple cartridge;
a reciprocating firing device responsive to a firing motion produced by the surgical instrument for progressively driving a wedge member of the staple cartridge from an unfired position to a fired position; and
a lockout arm pivotally attached to the channel and operably configured to pivot between a locked position and an unlocked position with respect to the firing device based upon a position of the wedge member.
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22. An end effector for use with a surgical instrument, the end effector comprising:
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a channel configured for receiving a staple cartridge;
a reciprocating firing device responsive to a firing motion produced by the surgical instrument for progressively driving a wedge member of the staple cartridge from an unfired position to a fired position; and
at least one lockout assembly positioned in the channel and adjacent to a corresponding lateral surface of the firing device, each lockout assembly comprising a lockout cartridge moveably disposed within a corresponding recess defined by the channel, wherein the lockout cartridge is configured to move between a locked position and an unlocked position with respect to the firing device based upon a position of the wedge member.
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23. An end effector for use with a surgical instrument, the end effector comprising:
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a channel configured for receiving a staple cartridge; and
a reciprocating firing device responsive to a firing motion produced by the surgical instrument to progressively drive a wedge member of the staple cartridge from an unfired position to a fired position, wherein the firing device comprises a distal portion, a proximal portion, and pivot means connecting the proximal and distal portions, and wherein distal portion is configured to pivot between a locked position and an unlocked position with respect to the channel based upon a position of the wedge member.
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Specification