Manufacturing method of cannula puncture outfit for disposable laparoscope and puncture outfit for implementing same

Abstract

The invention discloses a manufacturing method of a cannula puncture outfit for a disposable laparoscope. The manufacturing method comprises the following steps of: (1) setting a polygonal pyramid puncture needle; (2) setting a positioning puncture cannula; and (3) inserting the polygonal pyramid puncture needle into the positioning puncture cannula in a way that the head end of the polygonal pyramid puncture needle slightly extends out of the positioning puncture cannula. The invention further discloses a puncture outfit for implementing the manufacturing method of the cannula puncture outfit for the disposable laparoscope. The method provided by the invention is simple, is easy to implement and has low cost; the puncture outfit provided by the invention has a skillful structural design; tissues are cut by using the end part of a pyramid, and chambering is performed through the conical surface of a puncture head, so that the damage is small, and the safety and effectiveness of puncture surgery are enhanced effectively; a cannula sheath is provided with a segmented conical bump, so that high fixity is achieved and slippage is avoided; the head end of the cannula sheath is conical, so that the puncture resistance can be reduced, convenience is brought to operation, incision damage can be further reduced, a minimal invasion effect is achieved; and moreover, the puncture outfit is disposable, so that cross infection is avoided, and using safety is ensured.

Description

technical field [0001] The invention relates to the technology in the field of medical devices, in particular to a method for manufacturing a disposable laparoscopic trocar and a trocar implementing the method. Background technique [0002] Minimally invasive surgery represented by laparoscopy has developed rapidly in recent years, and its operation volume has exceeded that of traditional surgery in developed countries. The minimally invasive treatment technology characterized by minor surgery and minimal trauma has been gradually recognized by the majority of doctors. The cannula trocar is an essential instrument for establishing surgical channels and observation channels in laparoscopic surgery. The puncture end of existing puncture needle has multiple shapes: blunt conical, pointed conical, triangular, square, hexagonal and blade-shaped or the like. For example, the blunt puncture head expands the muscle fibers little by little, the fibers are continuous, the damage is ...

AI Technical Summary

Problems solved by technology

For example, the blunt puncture head expands the muscle fibers a little bit, the fibers are continuous, the damage is small, and the tissue defect is small after the puncture cannula is taken out, but the force used for puncture is the largest, which is difficult to control and troublesome to operate.

The blade-shaped puncture head, although the muscle and fascia can be cut directly with a small force, it is very easy to cause the fibers to be cut off, resulting in too large incision, causing tissue damage, and because the incision is too large, the puncture sleeve will be damaged. The tube is difficult to be fixed, and it is prone to prolapse, causing safety accidents

Although the polygonal puncture head has the advantages of the above two, the incision of the puncture is equal to the outer diameter of the puncture rod, the incision is large, and the puncture sleeve is not easy to fix and easy to fall out, which is inconvenient to use

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