Choledochoscope guiding device for laparoscopy

Abstract

The invention belongs to the technical field of medical instruments, and relates to a choledochoscope guiding device for laparoscopy. The guiding device is a tubular structure formed by connecting n helical sections; the cross section structure of each helical section comprises two horizontal sections located on different planes and a transitional section connected between the two horizontal sections; a pressing piece A is arranged on the inner side of the horizontal section close to the outer side plane in an extending manner; a pressing piece B is arranged on the outer side of the horizontal section close to the inner side plane; the pressing piece A of any helical section can be pressed with the pressing piece B of the adjacent helical section; the pressing piece B of any helical section can be pressed with the pressing piece A of the adjacent helical section; a cylindrical air bag is arranged on the outer wall of the tail end of the guiding device, and is connected with an air delivery pipe; the air delivery pipe is arranged along the outer wall of the guiding device. The choledochoscope guiding device for the laparoscopy can conveniently guide a choledochoscope to enter a biliary duct through the abdominal wall, and the guiding device can ensure that the choledochoscope keeps high maneuverability all the time in a microscopic operation treatment process.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a choledochoscope guide in laparoscopic surgery. Background technique [0002] Choledochoscopic examination is an effective method for the examination of biliary system diseases. The instruments are divided into rigid scope and flexible scope. The rigid scope can only observe the common bile duct, while the flexible scope can send the endoscope to the 2nd to 3rd grade hepatic ducts. At present, flexible choledochoscope is mostly used. Usually, there are two ways to enter the biliary system with a choledochoscope: open operation or laparoscopic operation after cutting the common bile duct and inserting it, and entering the bile duct through the T-shaped sinus after biliary surgery. [0003] During biliary tract surgery, it is necessary to know more about the condition of the biliary system, such as: whether there are intrahepatic bile duct stones, strictures, ...

AI Technical Summary

Problems solved by technology

Intraoperative choledochoscopy: In laparoscopic choledochoscopy to remove stones, due to the lack of support and closure of the T-tube sinus tract, the body of the choledochoscope is soft and difficult to transmit in the body. It becomes very difficult to enter the biliary tract through the opening of the bile duct, and an assistant is often needed The instrument clamp assists in and out of the biliary tract, which is easy to damage the plastic skin on the head of the biliary tract lens, and it is difficult to maintain coordination with the operator

In addition, the flushed saline will flow out from the gap between the choledochoscope and the bile duct, the bile duct cannot be expanded well, and the vision becomes blurred. Therefore, intraoperative choledochoscopy and stone removal are very difficult and take a long time, and the operator is prone to fatigue

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