FIELD: medical equipment.
SUBSTANCE: invention relates to a surgical instrument. Surgical instrument for treating patient's tissues comprises a barrel assembly, an end effector and a staple cassette. End effector extends from the shaft assembly along the central line of the branch. Said end effector contains a first jaw and a second jaw. First jaw has a stop configured to form staples pressed to the anvil. First and second jaws are configured to switch between open configuration and closed configuration. Staple cartridge is arranged in second jaw. Staple cartridge and the end effector have an arched part. Central line of branch extends longitudinally along transverse width of end effector. Staple cartridge comprises a platform and brackets. Platform faces the limit stop. Platform forms holes for staples. Staple holes comprise outer row of staple holes located radially outward from central line of branch in arc curve external curve, and internal row of staple holes located radially inward from central line of branch in internal curve of arc-shaped part. Outer row of staple holes forms outer gaps between adjacent staple holes in the outer row. Inner row of staple holes forms internal gaps between adjacent staple holes in the inner row. Each bracket comprises a pair of legs and a head between the legs arranged in the staple holes. Brackets include outer set of brackets and inner set of brackets for appropriate arrangement in external and internal rows of holes for brackets. Head of each elongated staple in outer row is longer than head of each bracket in inner row, so that internal and external rows of staples are made with possibility of permanent overlapping in direction transverse to central line. Internal gaps and outer gaps have equal elongation. Most remote hole for staples in the platform passes between external and internal rows of holes for staples. Most distant staple hole covers the central line of the branch.
EFFECT: invention enables tissue cross-linking and dissection in the patient's body.
12 cl, 15 dwg
