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 first lateral end to a second lateral end with a longitudinal axis extending therebetween, the cartridge having a plurality of staples disposed therein, each staple having staple legs, the plurality of staples are arranged into longitudinal rows that extend between the first and second lateral ends, each longitudinal row having a frequency of staples in which the staples are arranged along the longitudinal axis and 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 the cartridge such that the adjunct can be attached to tissue by the staples in the cartridge, the adjunct comprises a lattice structure having a plurality of repeating unit cells, each unit cell having a non-uniform thickness and a surface contour that is defined by triply periodic minimal surfaces, the plurality of repeating unit cells being arranged into longitudinal rows in which each longitudinal row has a frequency of unit cells;
wherein the frequency of unit cells is different than the frequency of staples and the staples legs of the plurality of staples are configured to advance through different portions of the plurality of repeating unit cells, wherein the different portions have different thickness relative to each other.
2. The stapling assembly of claim 1 , wherein the frequency of staples is greater than the frequency of unit cells in each corresponding longitudinal row.
3. The stapling assembly of claim 1 , wherein each staple of the plurality of staples includes a first staple leg configured to advance through a first portion of the adjunct with a first thickness and a second staple leg configured to advance through a second portion of the adjunct with a second thickness that is greater than the first thickness.
4. The stapling assembly of claim 1 , wherein each staple of the plurality of staples includes a first staple leg configured to advance through a first portion of the adjunct with a first thickness and a second staple leg configured to advance through a second portion of the adjunct with a second thickness that is less than the first thickness.
5. The stapling assembly of claim 1 , wherein at least a portion of the staples of the plurality of staples include uniform staples legs that are identical to each other.
6. The stapling assembly of claim 1 , wherein at least a portion of the staples of the plurality of staples include staple legs that differ from each another.
7. The stapling assembly of claim 1 , wherein the plurality of repeating unit cells are_Schwarz-P structures.
8. The stapling assembly of claim 1 , wherein the adjunct while under an applied stress in a range of 30 kPa to 90 kPa, is configured to undergo a strain in a range of 0.1 to 0.9.
9. The stapling assembly of claim 8 , wherein the strain is in the range of 0.1 to 0.7.