Linear cutting stitching instrument adopting pulling-back way

Abstract

The invention relates to a linear cutting stitching instrument adopting a pulling-back way, which comprises an upper clamping plate, a lower clamping plate, a handle, a nail cabin mounted in the lower clamping plate, a nail resisting base fixed in the upper clamping plate, a cutting knife mounted in the nail cabin and being capable of sliding along a central joint of the nail cabin and a pulling-back mechanism mounted below the nail cabin, wherein the pulling-back mechanism comprises a knife-carrying rack, a left cocking sheet and a right cocking sheet; a pulling-back button is arranged at the rear end of the pulling-back mechanism and is near the handle; a knife pushing baffle is arranged at the front end of the knife-carrying rack; and the cutting knife is mounted at the rear side of the knife pushing baffle. According to the invention, a transmission mechanism is designed between the cutting knife and the knife-carrying rack, so that the mechanism can realize a motion way similar to the way of making a wound in a pulling-back process and finish stitching in the process. The cocking sheet is simpler in design, relatively low in intensity requirements and is easier to realize processing and manufacturing consistence; and compared with a pushing force in the prior art, the pulling-back force is lower and have more operability.

Description

technical field [0001] The invention relates to a surgical medical instrument, in particular to a linear cutting and suturing device using a pullback method. Background technique [0002] In clinical use, the linear cutting stapler is a one-time use, no power supply, and only relies on mechanical force to cut off, cut and suture human tissue. Straight-line cutting surgery, this kind of straight-line cutting stapler can place two rows of staples on each side of the tissue, and at the same time use a push knife to cut between the sutured tissues on both sides, which is easy to use and greatly reduces the number of operations. time and improve the quality of surgery. [0003] The existing linear cutting and suturing device adopts the method of pushing and twisting on one side or both sides to drive the pushing blade and the firing pushing piece to complete the cutting and suturing. When cutting and suturing human tissue, the force on the structure of the disposable linear sutu...

AI Technical Summary

Problems solved by technology

In practice, it is found that the above-mentioned existing stapler still has inconvenience in use:

[0004] 1. The cutting and suturing from the proximal end to the distal end is mainly achieved by the thrust force. The method of advancing the cutting knife to complete the slit has a high requirement on the overall strength of the structural parts of the propulsion mechanism of the linear cutting suture device. During the propulsion process, Under the action of the thrust, the structural parts of the propulsion mechanism of the stapler are unevenly stressed, prone to bending deformation, and even cause damage to other related parts, resulting in increased thrust and immobility;

[0005] 2. In order to ensure that the structural parts meet certain strength requirements, the parts of the existing linear cutting stapler have complex structures, and the processing of parts is very difficult, and it is difficult to ensure the consistency of device performance;

[0006] 3. The cutting and suturing method from the proximal end to the distal end does not conform to the doctor's original habit of opening wounds in surgery

[0007] This shows that the above-mentioned existing linear cutting stapler obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

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