Knife bar for surgical instrument
First Claim
1. An actuation assembly for a surgical instrument, comprising:
- a thrust bar;
a knife assembly directly coupled to a distal end portion of the thrust bar, the knife assembly having an upper engagement portion and a lower engagement portion;
a proximal slide member positioned adjacent a first lateral side of the thrust bar, a portion of the proximal slide member affixed to the thrust bar; and
a distal slide member in contact with the thrust bar, a first portion of the distal slide member affixed to a first portion of the thrust bar, the first portion of the distal slide member fixed from longitudinal movement with respect to the first portion of the thrust bar, and a center of the distal slide member slidable with respect to the thrust bar.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument for surgically joining tissue includes a handle assembly, an elongate member extending distally from the handle assembly, an end effector disposed adjacent a distal portion of the elongate member, and an actuation assembly operatively associated with the handle assembly. The actuation mechanism includes a thrust bar disposed at least partially within the elongate member and a distal slide member. The thrust bar has a proximal portion, a distal portion, a first lateral side and a second lateral side and is configured to move between proximal and distal positions with respect to the handle assembly. The distal slide member is positioned adjacent the first lateral side of the thrust bar and is adjacent the distal portion of the thrust bar. The proximal portion of the distal slide member is adapted to slide relative to the thrust bar when thrust bar moves in a curvilinear direction.
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Citations
20 Claims
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1. An actuation assembly for a surgical instrument, comprising:
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a thrust bar; a knife assembly directly coupled to a distal end portion of the thrust bar, the knife assembly having an upper engagement portion and a lower engagement portion; a proximal slide member positioned adjacent a first lateral side of the thrust bar, a portion of the proximal slide member affixed to the thrust bar; and a distal slide member in contact with the thrust bar, a first portion of the distal slide member affixed to a first portion of the thrust bar, the first portion of the distal slide member fixed from longitudinal movement with respect to the first portion of the thrust bar, and a center of the distal slide member slidable with respect to the thrust bar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An actuation assembly for a surgical instrument, comprising:
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a thrust bar; a knife assembly directly coupled to a distal end portion of the thrust bar; a proximal slide member positioned adjacent a first lateral side of the thrust bar; a first distal slide member positioned in contact with a first portion of the thrust bar, a distal portion of the first distal slide member being fixed from longitudinal movement with respect to the first portion of the thrust bar, a center of the first distal slide member being slidable with respect to the thrust bar; and a second distal slide member positioned in contact with the thrust bar, the thrust bar having a longer length than a length of each of the first distal slide member and the second distal slide member. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification