Drainage tube preventing from destroying surrounding tissues when extracted

Abstract

The invention discloses a drainage tube preventing from destroying the surrounding tissues when extracted. The drainage tube includes a tube body, a plurality of drainage holes distributed in a surrounding mode are formed in the side wall of the tube body, and a vacuum cavity is formed in the hollow interior of the tube body; the drainage holes are mainly composed of a plurality of convex parts which are raised in the middle and face the drainage holes, the convex parts are distributed in the circumferential direction of the drainage holes, the adjacent convex parts enclose to form openings for washing fluid to flow in and out, wall faces which form the drainage holes are formed from the adjacent convex parts and the bottoms connected by the tube body, guide surfaces facilitating smooth falling of the surrounding tissues are arranged on the sides of the convex parts facing the vacuum cavity, and the guide surfaces are incliningly arranged in the direction from the inner sides of the convext parts to the outer sides facing toward the middle of the drainage holes, and the outer caliber of the opening is larger than the inner caliber; the surrounding tissues grown inside the tube bodycan be peeled off smoothly, the extracting process of a double sleeving tube becomes simple, and the drainage tube does not cause discomfort to a human body.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a drainage tube that prevents damage to surrounding tissues when pulled out. Background technique [0002] Surgical drainage is one of the indispensable measures for clinical treatment of many diseases, such as drainage of anastomotic stoma and operation area after surgery, and drainage of abscess cavity. The purpose of surgical drainage is to guide the pus, blood, and fluid between human tissues or body cavities to the outside of the body, so as to prevent wound healing from being affected after surgery. [0003] There are many types of surgical drainage tubes used clinically, and there are four types of drainage tubes commonly used: Penrose drainage, closed Penrose drainage, closed drainage and cannula drainage. Penrose drainage is named after the American gynecologist Charles Bingham Penrose (1862-1925). Its structure is a soft rubber tube or silicone tube, which is s...

AI Technical Summary

Problems solved by technology

[0004] Among them, the drainage holes set on the wall of the surgical drainage tube are mostly cylindrical holes or tapered holes. Since the drainage tube stays in the human intestinal tract for a long time, generally ≥ 12 hours, the intestinal tissue in the intestinal tract keeps growing. , the intestinal tissue will protrude into the tube body along the cylindrical or conical drainage holes set on the wall of the drainage tube. When the drainage tube cleans the pus in the intestinal tract, surgery is required. During the process, part of the mushroom-shaped intestinal tissue will block the opening inside the drainage hole, because there is no guiding surface or guiding path for the breeding intestinal tissue to fall off the inside of the tube body smoothly because of the cylindrical or tapered drainage hole , and the diameter of the inner opening is smaller than that of the outer diameter, the intestinal tissue will be stuck inside the tube body and it will be difficult to fall off. If you continue to pull out the drainage tube, the intestinal tissue that grows inside the tube body may be pulled out and cause bleeding, which will bring harm to the human body. discomfort, and in severe cases may lead to other symptoms

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