Tissue ligation device for laparoscopic surgery

Abstract

The invention belongs to the technical field of medical devices, and in particular relates to a tissue ligation device for laparoscopic surgery, comprising: a ligation bar, including a rack, the surface of which has several first anti-slip teeth distributed along its length direction; the rack The first end of the rack is connected with a tooth chamber, and there is a second anti-skid tooth in the tooth chamber for meshing with the first anti-skid tooth; the second end of the rack is used to insert into the tooth chamber, and is movably fitted in the tooth chamber; when the tooth The second end of the bar moves to the target position, and the corresponding first anti-slip teeth on the rack mesh with the second anti-slip teeth in the tooth cavity to limit the position, so as to ligate the lesion tissue; the retracting rod has a guide hole; the retracting rod is used It leans against the tooth cavity, so that the second end of the rack goes through the guide hole, and guides the movement of the rack through the guide hole. During laparoscopic surgery, especially laparoscopic radical rectal cancer surgery, the present invention can quickly and effectively bandage, tighten and block intestinal tracts, facilitate intestinal flushing and guarantee the principle of tumor-free.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a tissue ligation device for laparoscopic surgery. Background technique [0002] In laparoscopic surgery, there is still a lack of ideal instruments for ligating and blocking tissues, such as the diseased stomach and bowel. Usually, yarn strips are used to tie knots, but in the actual operation process, there are the following problems: (1) the degree of tightening after ligation cannot be judged, which is inconvenient for subsequent operations; (2) due to the limited material of yarn strips, knotting (3) During the ligation process, the wear of the yarn strip and the pusher may cause the thread to break and affect the operation process. Especially in the laparoscopic radical resection of rectal cancer, the existing problems are far from being completely solved, such as the principle of tumor-free operation. In order to prevent the recurrence of anastomotic ...

AI Technical Summary

Problems solved by technology

Yarn is usually used for knotting, but in the actual operation process, there will be the following problems: (1) the degree of tightening after ligation cannot be judged, which is inconvenient for subsequent operations; (2) due to the limited material of yarn, knotting (3) During the ligation process, the thread may be broken due to the wear of the yarn thread and the knot pusher, which will affect the operation process.

However, this blocking technique will encounter some problems in actual clinical operation: (1) Some patients have hypertrophy of the mesorectum or large tumors, and the operating space is very limited in the narrow pelvis, so the vascular clip cannot be placed under the tumor; (2) ) Due to the limited size and model of the vascular clamp, the selection of an inappropriate vascular clamp will cause displacement or fall off due to poor occlusal force; in the prior art, the oval forceps are also used to directly close and block the intestinal tube, but the insertion of the oval forceps needs to be performed in the lower abdomen. Create another hole, put in the incision protective sleeve and establish pneumoperitoneum, the process is very cumbersome

However, ordinary nylon cable ties also have limitations in actual clinical operations: (1) Nylon cable ties need to hold a needle forceps or separating forceps with both hands to encircle and ligate the intestine, and one end clamps the lock of the cable tie , the other end clamps the tail of the zigzag belt and passes through the lock head. Since the lock head of the nylon cable tie is very small, the step of passing through the lock head needs repeated attempts, which delays the operation process

(2) After wrapping the ligation, it is necessary to tighten the tie to block the intestine. Due to two-handed operation, the force point of the needle holding forceps or separating forceps to tighten the serrated belt and withstand the lock is not on a straight line. Nylon cable ties cannot be tightly tightened in the narrow operating space, and the intestinal tract cannot be effectively blocked

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