A fastener cartridge assembly (30000) for an end effector of a surgical instrument can comprise a cartridge body (20070), a deformable tube (3000 31080, 33080, 34080, 35080, 36080, 38080, 39080, 40080, 41080, 41180, 42080, 43080, 44080, 45080, 47080, 48080) , and a fastener moveable between an initial position and a fired position. The deformable tube can be longitudinally positioned along a length of the cartridge body. When the fastener is moved to the fired position, the fastener can compress a portion of the deformable tube. The deformable tube can comprise a resilient material such that deformation of the deformable tube generates a restoring force. The deformable tube can comprise a lattice of strands (30092, 0090, 34090, 34092, 35092, 36092, 36080, 37092) woven together to form a tube wall. Further, the deformable tube can be bioabsorbable and can hold a therapeutic agent. The fastener cartridge assembly can comprise multiple, substantially parallel deformable tubes positioned side-by-side and / or within each other.
