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US 2007/0181632 A1Published application
Anvil assembly with improved cut ring
AssigneeTyco Healthcare Group LP
InventorKeith Milliman
Life of this patent
Estimating the term…
Abstract
An anvil assembly for use with a surgical stapler is provided. The anvil assembly includes a cut ring assembly having a body and a cover. The cover has a first layer of material having a first hardness to allow penetration by a knife of a surgical stapler and at least one additional layer of material having a second hardness greater than the first hardness to minimize penetration of the cover by a knife of a surgical stapler.
Claims23
An anvil assembly comprising:
- a head assembly including a housing supporting an anvil plate having a plurality of staple deforming pockets and a cut ring assembly supported within the housing adjacent the anvil plate, the cut ring assembly including a body and a cover fastened to the body, the cover including a first layer formed of a first material having a hardness which allows penetration by a knife of a surgical stapler and at least one additional layer formed of a second harder material having a hardness to minimize penetration by a knife of a surgical stapler.
A cut ring assembly for use with an anvil assembly comprising:
- a body and a cover fastened to the body, the cover including a first layer formed of a first material having a first hardness to allow penetration of the cover by a knife of a surgical stapler and at least one additional layer formed of a second material having a second hardness greater than the first hardness to minimize penetration of the cover by a knife of a surgical stapler.
An anvil assembly comprising:
- a head assembly including a housing and an anvil plate, the anvil plate having a plurality of staple deforming pockets;
- and
- a cut ring assembly supported within the housing, the cut ring assembly including a body and a cover, the cover fastened to the body such that the body is positioned between a distal wall of the housing and the cover, wherein at least a portion of the cover is formed of a material that is harder than the body.
Dependencies are inferred from the claim text.