Abstract: The present invention discloses a tissue closure device, a tissue closure assembly and a medical instrument. The tissue closure device comprises a base, a pressure plate cooperating with the base, and a staple pushing sheet. The pressure plate is rotatable relatively to the base. The tissue closure device further comprises a staple accommodating portion which is arranged at the distal end of the base and configured to accommodate a closure staple. The staple pushing sheet and the staple accommodating portion are configured to cooperatively drive the closure staple in the staple accommodating portion to deform. In the present invention, a bundled pouch with a gathered center is formed through the tissue closure device, so that risks of stoma fistula arising from subsequent anastomosis through a circular stapler are reduced; and the surgery cost is reduced.

Abstract: The present invention discloses a tissue closure device, a tissue closure assembly and a medical instrument. The tissue closure device comprises a base, a pressure plate cooperating with the base, and a staple pushing sheet. The pressure plate is rotatable relatively to the base. The tissue closure device further comprises a staple accommodating portion which is arranged at the distal end of the base and configured to accommodate a closure staple. The staple pushing sheet and the staple accommodating portion are configured to cooperatively drive the closure staple in the staple accommodating portion to deform. In the present invention, a bundled pouch with a gathered center is formed through the tissue closure device, so that risks of stoma fistula arising from subsequent anastomosis through a circular stapler are reduced; and the surgery cost is reduced.

Abstract: A circular stapler and a staple head assembly thereof are disclosed. The staple head assembly comprises a staple barrel assembly and an anvil assembly. The anvil assembly includes an anvil ring and an anvil shaft which are fixedly connected to each other, where the anvil shaft is capable of sliding along the longitudinal direction in an anti-expansion tube. The staple barrel assembly includes a staple barrel, a staple pusher piece arranged within the staple barrel and a staple cartridge fixed at a distal end of the staple barrel.

Abstract: A circular stapler and a staple head assembly thereof are disclosed. The staple head assembly comprises a staple barrel assembly and an anvil assembly. The anvil assembly includes an anvil ring and an anvil shaft which are fixedly connected to each other, where the anvil shaft is capable of sliding along the longitudinal direction in an expansion-stopping tube. The staple barrel assembly includes a staple barrel, a staple pusher piece arranged within the staple barrel and a staple cartridge fixed at a distal end of the staple barrel.

Abstract: A surgical purse-string suturing instrument comprises an upper jaw, jaw handle, grip, and a lower jaw, jaw handle, grip, wherein the jaws (1) and the corresponding jaw handles (3) are arranged in shape of “L” so that the doctor is able to clearly observe the placement of the tissues on the jaws (1) directly from one side of the jaw handle (3); in order to adapt to tissues of different widths, gaps (7), peaks (8) and valleys (9), or alternately arranged teeth (10) are disposed on the surfaces of the staple cartridges (2); by employing limiting rods (11) and anti-exceeding boss (13), the exceeding of tissues during the process of purse-string suturing can be effectively prevented so that the sutured purse-string has a complete shape.