STAPLE FORMING FEATURES FOR SURGICAL STAPLING INSTRUMENT Russian patent published in 2018 - IPC A61B17/68 A61B17/72 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to surgical stapling instruments, in particular to staple forming features for said surgical stapling instruments. End effector for a surgical instrument comprises a first jaw and a second jaw. First jaw is configured to receive a staple cartridge. Second jaw is movable relative to the first jaw. Second jaw is configured to provide an anvil for forming staples, pushed from the staple cartridge, arranged in the first jaw. Anvil comprises a tissue contacting surface, and a staple forming pocket adjacent to the tissue contacting surface. Staple forming pocket defines a length along a longitudinal axis. Staple forming pocket comprises a first staple forming surface region and a second staple forming surface region. First staple forming surface region is configured to receive a first staple leg, wherein the first region has a length greater than half of the length of the staple forming pocket. Second staple forming surface region is configured to receive a second staple leg, wherein the second staple forming surface region has a length greater than half of the length of the staple forming pocket. Staple forming pocket defines a single continuous channel, extending from one end of the staple forming pocket to an opposite end of the staple forming pocket, wherein both the staple forming surface region and the second staple forming surface region are defined in the single continuous channel. Staple forming pocket comprises a first deflection protrusion projecting laterally into the continuous channel and a second deflection protrusion projecting laterally into the continuous channel.

EFFECT: use of the invention allows minimizing re-entry of staple leg tips into tissue.

4 cl, 43 dwg