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US 2021/0277555 A1Published application
Knitted tissue scaffolds
AssigneeEthicon, Inc.
InventorsMichael J. Vendely, Victoria Dalessandro, Jason L. Harris, Frederick E. Shelton, IV
Life of this patent
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Abstract
Staple cartridge assemblies for use with surgical stapling instruments and methods for manufacturing the same are provided. Scaffolds for use with a surgical staple cartridge and methods for manufacturing the same are also provided.
Claims20
A method for manufacturing a scaffold for use in a surgical staple cartridge, the method comprising:
- forming a first knitted layer that comprises fibers of a first polymer, the first knitted layer being configured to mate with a cartridge deck;
- forming a second knitted layer that comprises the first polymer fibers;
- and
- interknitting spacer fibers with the first and second knitted layers so as to connect the first and second knitted layers together in a spaced parallel relation, the spacer fibers being formed of only a second polymer that is different than the first polymer, wherein the spacer fibers are integrated with and extending between the first and second knitted layers, and
- wherein the first polymer fibers have a diameter that is different than a diameter of the second polymer fibers.
2 more elements
A method for manufacturing a staple cartridge assembly for use in a surgical instrument, the method comprising:
- heating a cartridge deck;
- and
- positioning a knitted elastically deformable, bioabsorbable scaffold against a surface of the cartridge deck, the scaffold comprising:
- first and second knitted layers each having fibers of a first type and fibers of a second type, wherein the first type of fibers being predominantly present, wherein the first type of fibers have a first glass transition temperature and the second type of fibers have a second glass transition temperature that is less than the first glass transition temperature;
- and
- a support layer disposed between the first and second knitted layers, the support layer being formed of the second type of fibers,
- wherein the cartridge deck is heated to a temperature of at least the second glass transition temperature.
4 more elements
Dependencies are inferred from the claim text.