Compressible non-fibrous adjuncts
Stapling assemblies for use with a surgical stapler are provided. In one exemplary embodiment, the stapling assembly includes a cartridge having a plurality of staples disposed therein and a non-fibrous adjunct formed of at least one fused bioabsorbable polymer and configured to be releasably retained on the cartridge. Adjunct systems for use with a surgical stapler are also provided. Surgical end effectors using the stapling assemblies are also provided. Methods for manufacturing stapling assemblies and using the same are also provided.
1. A stapling assembly for use with a surgical stapler, comprising:
a cartridge extending from a top surface to a bottom surface that is opposite the top surface, the top surface being a tissue-facing surface with a plurality of surface features defined therein;
a plurality of staples disposed within the cartridge, the plurality of staples being configured to be deployed into tissue; and
a non-fibrous adjunct formed of at least one fused bioabsorbable polymer and configured to be releasably retained on and extend along a longitudinal axis of the cartridge such that the adjunct can be attached to tissue by the plurality of staples in the cartridge, the adjunct comprising,
a plurality of unit cells, and
a plurality of attachment features that differ in geometry and extend from at least a number of the plurality of unit cells at predefined positions, the predefined positions corresponding to the plurality of surface features so that the plurality of attachment features can be inserted into and engage with a number of surface features of the plurality of surface features to thereby retain the non-fibrous adjunct to the cartridge prior to staple deployment, wherein the number of the plurality of attachment features is less than the number of the plurality of surface features.
2. The stapling assembly of claim 1 , wherein the plurality of attachment features differ in geometry in a lateral direction relative to the longitudinal axis of the cartridge.
3. The stapling assembly of claim 1 , wherein the plurality of attachment features differ in height in the lateral direction relative to the longitudinal axis of the cartridge.
4. The stapling assembly of claim 1 , wherein the plurality of attachment features differ in geometry in a longitudinal direction along the longitudinal axis of the cartridge.
5. The stapling assembly of claim 1 , wherein the plurality of attachment features vary in at least one of height, width, length, and shape relative to each other.
6. The stapling assembly of claim 1 , wherein the plurality of surface features include a plurality of recessed channels.
7. The stapling assembly of claim 1 , wherein the plurality of attachment features includes a first plurality of attachment features having a first length, and wherein the plurality of surface features includes a second plurality of attachment features having a second length that is less than the first length of the first plurality of attachment features.
8. The stapling assembly of claim 1 , wherein the plurality of unit cells comprise at least one triply periodic minimal surface structure.
9. The stapling assembly of claim 1 , wherein the plurality of unit cells comprise at least one Schwarz-P structure.
10. The stapling assembly of claim 1 , wherein the plurality of surface features each has a shape and a height that varies in a lateral direction relative to the longitudinal axis of the cartridge.
11. The stapling assembly of claim 10 , wherein the plurality of attachment features differ in at least one of a shape and a height in a lateral direction relative to the longitudinal axis of the cartridge, and wherein the lateral variation of the plurality of attachment features corresponds to the lateral variation of the plurality of surface features.