Surgical instrument having a multi-layered drive beam
First Claim
1. A surgical instrument, comprising:
- a body portion defining a first longitudinal axis;
a drive member;
a tool assembly including an anvil, a cartridge assembly and a contact surface, the tool assembly being supported adjacent a distal end of the body portion;
a drive beam including a plurality of layers, and a proximal engagement portion disposed adjacent a proximal end thereof and being configured to engage a portion of the drive member; and
a closure apparatus disposed adjacent a distal end of the drive beam being configured to engage the contact surface of the tool assembly, wherein movement of the drive member moves the closure apparatus distally into engagement with the contact surface to approximate the anvil and the cartridge assembly, the closure apparatus having a plastic surface or a plastic coating, at least one layer of the plurality of layers of the drive beam being affixed to an adjacent layer of the plurality of layers of the drive beam via at least one spot weld.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument including a handle portion, a body portion, a movable handle, a tool assembly, a drive beam and a closure apparatus is disclosed. The movable handle is in mechanical cooperation with a drive member. The tool assembly includes an anvil, a cartridge assembly and a contact surface. The drive beam includes a plurality of layers and at least one layer has a proximal engagement portion and is configured to engage a portion of the drive member. The closure apparatus is configured to engage the contact surface of the tool assembly. At least a partial actuation of the movable handle moves the closure apparatus distally into engagement with the contact surface to approximate the anvil and the cartridge assembly. At least one of the layers of the drive beam is affixed to an adjacent layer of the drive beam via at least one spot weld.
377 Citations
10 Claims
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1. A surgical instrument, comprising:
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a body portion defining a first longitudinal axis; a drive member; a tool assembly including an anvil, a cartridge assembly and a contact surface, the tool assembly being supported adjacent a distal end of the body portion; a drive beam including a plurality of layers, and a proximal engagement portion disposed adjacent a proximal end thereof and being configured to engage a portion of the drive member; and a closure apparatus disposed adjacent a distal end of the drive beam being configured to engage the contact surface of the tool assembly, wherein movement of the drive member moves the closure apparatus distally into engagement with the contact surface to approximate the anvil and the cartridge assembly, the closure apparatus having a plastic surface or a plastic coating, at least one layer of the plurality of layers of the drive beam being affixed to an adjacent layer of the plurality of layers of the drive beam via at least one spot weld. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification