Anastomat

Abstract

The invention provides an anastomat which comprises a shell and a driving rod which is arranged in the shell and can move front and back, and the driving rod is connected with the rear end of a nail pushing piece rod; the front end of the driving rod is of a double-fork-arm structure, the rear end of the nail bin rod is provided with an inverted-T-shaped nail bin rod rear end protruding part, the nail bin rod rear end protruding part is located in a containing cavity of the double-fork-arm structure, and a rod body of the nail bin rod penetrates out of a gap between an upper extending part and a lower extending part of the double-fork-arm structure. The shell is further provided with a limiting button, the limiting button can move in the length direction of the limiting button, and when a protruding block at the end of the limiting button is located between the rear wall of the containing cavity and a protruding part at the rear end of the nail bin rod, the driving rod can drive the nail bin rod to move forwards. The same driving rod can be used for driving the nail pushing piece rod and the nail bin rod, after the nail bin ring and the nail anvil ring are successfully aligned, driving of the driving rod to the nail bin rod can be relieved, and the structure of a driving component is greatly simplified.

Description

technical field [0001] The invention relates to the field of medical instruments, and relates to a stapler. Background technique [0002] Due to the development of modern science and technology, a cutting stapler was born to replace the traditional manual suture; the cutting stapler has the advantages of rapid anastomosis, reliability, and fewer postoperative complications. It works like a stapler, a process that uses titanium pins and blades to make anastomotic cuts to tissues and organs, respectively. Existing cutting and anastomotic devices are mainly used for cutting and anastomosis of skin, digestive tract, blood vessels, lungs, etc., and are applicable to laparoscopic and open surgery. The repair and reconstruction of many lumen-like internal structures (such as urinary tract: including urethra, bladder urethra, ureter, bladder, ureter; intestine, blood vessels, etc.) currently mainly rely on manual anastomosis with wire and the use of intraluminal circular staplers o...

AI Technical Summary

Problems solved by technology

This suture method has at least three defects: (1) Inverted anastomosis is used to form an inverted suture lumen tissue A2 protruding from the inner wall of the lumen, which can easily cause many complications such as stenosis and obstruction after the operation

(2) An incision A1 needs to be made on the lumen and needs to be anastomosed again. This incision is additionally opened due to the need for surgery, which increases the difficulty of the operation and unnecessary pain for the patient

(3) Using a variety of staplers greatly increases the cost of surgery

This method of anastomosis has at least three defects: (1) Since the original direction of a section of the lumen needs to be changed, the lumen is pulled by external force, and this method itself will cause damage to the lumen

(2) After the anastomosis, the flowing content in the lumen moves through the stoma port A3, forming a 90-degree turn in the lumen, the flow is not smooth enough, and it is easy to block

(3) Two or more anastomoses are required, which greatly increases the cost and difficulty of the operation

However, this method is only an idea, and no detailed structural features are given. There are at least four reasons why it cannot be applied clinically: (1) The operation space is very small, and it is difficult to insert the tissue between the anastomotic ring after suturing. Insert another pair of scissors to cut the ring structure

(2) When using scissors to cut the ring structure, external force needs to be applied. If the operation is not done properly, it will cause secondary damage to the lumen tissue, or even break the lumen

(3) The rigidity of materials that are easy to be cut and damaged by scissors must be insufficient to form sufficient anastomotic traction, and it is also destructive to surgical scissors

(4) The anastomosis method of pulling the anvil ring to the proximal end to squeeze the staples is adopted, because the distal end cannot be seen during the operation, which may easily cause tearing of the tissues and organs

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