cutting stapler

Abstract

The invention discloses a cutting and sewing device which comprises a nail pushing rod, a knife rest, a cutting knife and a nail pushing mechanism. The nail pushing mechanism comprises a nail pushing piece for pushing sewing nails and a nail pushing foundation support for bearing the nail pushing piece. One or more wave-shaped bouncing pieces are arranged between the stress surface of the near end of the nail pushing foundation support and the force applying surface of the far end of the knife rest. The middle of the nail pushing piece is provided with a narrow seam, and the cutting knife penetrates through the narrow seam, the nail pushing foundation support and the bouncing piece and is fixed to the knife rest. In the sewing state, the nail pushing rod pushes the knife rest to move towards the far end till the nail pushing mechanism pushes out sewing nails for finishing sewing, the bouncing piece is not deformed, and the cutting edge face of the cutting knife is lower than the tooth face of the far end of the nail pushing mechanism; in the cutting state, the nail pushing rod continuously pushes the knife rest, the nail pushing mechanism does not move, the knife rest drives the bouncing piece to be deformed, and the knife rest drives the cutting knife to stretch out of the tooth face in a protruding mode for finishing cutting. According to the cutting and sewing device, the bouncing piece is arranged, sewing before cutting is achieved, the sewing effect of tissues is good, and the incision of the tissues is neat and free of tearing.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a cutting and stapler. Background technique [0002] The cutting and stapler is a commonly used surgical instrument, which can complete the suturing and cutting actions at the same time, which greatly saves the doctor's operation time, reduces the amount of bleeding, and improves the success rate of the operation. The cutting knife of the existing cutting stapler is fixed at the middle position of the nail pushing mechanism, so when the nail pushing mechanism and the cutting knife move to the distal end together under the action of the thrust, the nail pushing mechanism and the cutting knife simultaneously cut the tissue and suture processing. However, when the tissue is cut at the same time as suturing, the tissue is pulled by the cutting knife. On the one hand, it will affect the suturing effect of the staples, and the staples will be tilted, resulting in poor forming effect...

AI Technical Summary

Problems solved by technology

However, when the tissue is cut at the same time as suturing, the tissue is pulled by the cutting knife. On the one hand, it will affect the suturing effect of the staples, and the staples will be tilted, resulting in poor forming effect of the staples. On the one hand, the tissue is prone to damage under the pulling effect of the cutting knife and staples

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