Stapler with stable jaw locking function

Abstract

The invention relates to a stapler with a stable jaw locking function. The stapler includes a stable chamber assembly, a stable anvil, an adapter, and a pushing cutter assembly. The staple chamber assembly includes a staple chamber frame and a staple chamber. The pushing cutter assembly includes an I-shaped cutter and a pusher cutter bar. A cutter moving groove is formed in the length direction ofthe staple chamber and the staple chamber frame. In addition, a pressing block is arranged and includes two pressing arms and two supporting arms. The pressing block sleeves the pushing cutter assembly, and a pushing cutter assembly through hole is formed in the pressing block. Inserting-connecting portions are disposed at the positions, facing the pushing cutter assembly through hole, of the pressing arms or the supporting arms, and correspondingly, a first inserting-connecting sinking slot is formed in the pushing cutter assembly. Elastic outer arch portions are arranged at the central portions of the supporting arms. Thus, when the stapler is in the excited state, the elastic outer arch portions are subjected to extrusion effect of the cutter moving groove to increase the height dimension of the pressing block, so that the inserting-connecting portions are separated from the first inserting-connecting sinking slot, the tension of the jaw is born by the pressing block, and the stress of the I-shaped cutter in the height direction of the I-shaped cutter is reduced.

Description

technical field [0001] The invention relates to the technical field of stapler manufacturing, in particular to a stapler with a stable jaw locking function. Background technique [0002] In laparoscopic surgery and thoracoscopic surgery, laparoscopic cutting stapler is usually used for cutting and anastomosis of esophagus, stomach, duodenum, small intestine, colon, rectum, appendix, gallbladder, pancreas and spleen in the digestive tract, It is also used in cutting and anastomotic operations such as the lung and trachea in the respiratory tract, and in the bladder and uterus in the urogenital system. Through its application, it can greatly reduce the surgical wound, shorten the operation time and improve the quality of the operation. [0003] Generally speaking, the staple cartridge and the staple cartridge frame are fixed as a whole, and a cutting groove is provided along the length thereof. When the jaws are in the closed state, under the thrust of the knife pusher rod, t...

AI Technical Summary

Problems solved by technology

However, it has a tendency to open due to the presence of tissue within the jaws

In the prior art, it is only ensured that the jaws are always in the closed state (as figure 1 , 2 As shown in ), so, in the process of directional cutting, the H-shaped knife is always subjected to the double action of the cut

Images