Cup-shaped calculus removal mesh basket

Abstract

The invention relates to the technical field of medical apparatuses, and in particular to a cup-shaped calculus removal mesh basket. The device (the mesh basket) comprises a cup-shaped mesh basket body, a loop, an outer sleeve and an inner core pipe, wherein the inner core pipe covers a metal connecting rod of the cup-shaped mesh basket body; the inner core pipe, which is applied to a duodenoscope, is a dual-lumen tube which comprises a tube lumen I and a tube lumen II; a connecting rod of the loop passes through the interior of the tube lumen I, and a zebra lead passes through the interior ofthe tube lumen II; the inner core tube, which is applied to a choledochoscope, is a single-lumen tube which comprises a tube lumen I, and the connecting rod of the loop passes through the interior ofthe tube lumen I; the head end of the connecting rod is represented in an inverted L-shaped form; and the loop, which is represented in an O-shaped form, is connected to an opening of the cup-shapedmesh basket. The mesh basket provided by the invention can be widely popularized in such fields as endoscopic therapy of gall stones and the like.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a cup-shaped stone extraction basket. Background technique [0002] Cholelithiasis is a common and frequently-occurring disease in my country. With the continuous development of endoscopic technology and the continuous improvement of its accessories, intrahepatic bile duct stones are often treated with choledochoscopy, and extrahepatic bile duct stones are often treated with endoscopic retrograde pancreatic surgery. Excision of the bile duct (ERCP) stone. Compared with traditional laparotomy or modern laparoscopic liver resection and biliary tract exploration, this technique has the advantages of less trauma, high safety factor, and faster recovery. [0003] The currently clinically used cholangioscopic or duodenoscope stone extraction baskets are all wire-woven baskets, the head and tail of the basket are fixed, and the released basket is oval or spindle-shaped. Disadva...

AI Technical Summary

Problems solved by technology

[0003] The currently clinically used cholangioscopic or duodenoscope stone extraction baskets are all wire-woven baskets, the head and tail of the basket are fixed, and the released basket is oval or spindle-shaped. Disadvantages: 1. By rotating or pushing the basket back and forth, stones can enter the basket through the side holes of the basket, and the success rate of removing stones at one time is low; 2. The side holes of the basket are large, and the process of tightening the basket , the stones can overflow through the side hole, resulting in the failure of stone extraction; 3. When the bile duct is thin or the stone is large, the basket cannot be released, and it is difficult to successfully extract the stone; 4. If the stone is large, it cannot pass through the biliary tract When the endoscope or duodenoscope is taken out, it is difficult to release the stones from the basket, which leads to a dilemma in the operation of endoscopic stone removal. If this situation occurs during stone removal under the choledochoscope, the stone removal basket can only be cut off before the choledochoscope can be withdrawn. , and this situation occurs under the duodenoscope, it can only be converted to laparotomy before the stone can be removed and the duodenoscope can be withdrawn

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