Anvil assembly with improved cut ring
First Claim
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1. 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.
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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.
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Citations
23 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. 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. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An anvil assembly comprising:
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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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification