TISSUE THICKNESS COMPENSATOR CONTAINING CONTROLLED RELEASE AND EXPANSION Russian patent published in 2017 - IPC A61L31/04 A61L31/12 A61L17/06 A61L17/12 A61B17/03 

FIELD: medicine.

SUBSTANCE: tissue thickness compensator comprises the first layer including the first biocompatible material sealed with a waterproof material and the second layer including the second biocompatible material comprising at least one capsule. At that, the first biocompatible material contacts the fluid upon impermeable material rupture and expands upon contact with the fluid. The group of inventions also relates to the abutment of a stapler and a staple cartridge for a stapler comprising the said tissue thickness compensator.

EFFECT: ability to compensate for thinner or thicker tissue, the ability to apply compressive pressure to the tissue, regardless of the thickness of the tissue captured by the surgical instrument.

12 cl, 211 dwg