US 12,220,127 B2
Compressible knitted adjuncts with varying interconnections
Jason L. Harris, Lebanon, OH (US); Michael J. Vendely, Lebanon, OH (US); and Frederick E. Shelton, IV, Hillsboro, OH (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Jun. 20, 2023, as Appl. No. 18/337,958.
Application 18/337,958 is a continuation of application No. 17/104,473, filed on Nov. 25, 2020, granted, now 11,678,883.
Prior Publication US 2023/0404581 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/072 (2006.01)
CPC A61B 17/07292 (2013.01) [A61B 2017/07264 (2013.01); A61B 2017/07271 (2013.01); A61B 2017/07278 (2013.01); A61B 2017/07285 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A stapling assembly for use with a surgical stapler, comprising:
a cartridge having a plurality of staples disposed therein, the plurality of staples being configured to be deployed into tissue; and
a knitted adjunct configured to be releasably retained on the cartridge such that the adjunct can be attached to tissue by the plurality of staples in the cartridge, the adjunct having a first end, a second end, and a longitudinal axis extending therebetween, the adjunct comprising
a tissue-contacting layer formed of at least first fibers,
a cartridge-contacting layer formed of at least second fibers, wherein at least the first fibers and the second fibers are movable relative to each other, and
a core layer disposed between the tissue-contacting layer and the cartridge-contacting layer, the core layer being formed of third fibers that are non-fixedly attached and slidably interconnected with the first fibers and with the second fibers to allow the adjunct to compress or expand in a first predetermined direction and to limit movement in a second direction that differs from the first predetermined direction;
wherein at least one of the tissue-contacting layer and the cartridge-contacting layer includes reinforcing fibers that are knotted to the second fibers to minimize lateral movement of the second fibers relative to the longitudinal axis of the adjunct.