Surgical Instruments and Linear Staplers

Abstract

The invention relates to a surgical instrument and a linear stapler, which are provided with a push screw assembly and a direction-changing transmission device. When the stapling mechanism is closed, the direction-changing transmission device drives the first screw rod in the push screw assembly to rotate to make the sleeve The firing nut arranged thereon moves in the direction of the first axis relative to the first screw rod, so that the staples in the staple cartridge are fired sequentially. Therefore, the surgical instrument and the linear stapler adopt the method of sequentially forming staples, which can save the required percussion force, avoid deformation of the anvil, and have better staple forming effect, suturing effect and surgical safety.

Description

technical field [0001] The invention relates to a surgical instrument and a linear stapler, which belong to the field of medical instruments. Background technique [0002] Linear stapler, also known as alimentary canal closure device, is a device that can staple a plurality of staggered staples on the tissue in a straight line, and is also one of the devices that are widely used to replace manual linear sutures. It is mainly used to suture the stumps of the stomach, duodenum, small intestine, and colon, and it is a full-thickness eversion suture. [0003] The staple forming method of the existing linear stapler is often to push the staple seat through the transmission device to push all the staples out at one time and fire them into staples, so that the staples are prone to large and small ends and dovetails, and the staple forming effect is poor, resulting in The sewing effect is not good, and it will cause waste at the same time. Moreover, due to the one-time firing of a...

AI Technical Summary

Problems solved by technology

[0003] The staple forming method of the existing linear stapler is often to push the staple seat through the transmission device to push out all the staples at one time and fire them into staples, so that the staples are prone to large and small ends and dovetails, and the staple forming effect is poor, resulting in The stitching effect is not good and at the same time it will cause waste

Moreover, due to the one-time firing of a large number of staples, some of the staples cannot be sutured firmly, which will cause tissue leakage and other situations; at the same time, because one-time firing is required, the firing force is relatively large, and the cantilever beam will be damaged after multiple firings. The anvil of the structure deforms

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