Cystic duct opening device and method

Abstract

The invention relates to a cystic duct opening device and method. The device comprises a fixed pipe, a pusher pipeline and an expander which are coaxially arranged; one end of the pusher pipeline is connected with the fixed pipe, and the other end is connected with the expander through a corrugated pipe; the fixed pipe is connected with the pusher pipeline to be taken as a fixing and supporting component of the opening device; the pusher pipeline comprises an outer pipe, an inner pipe and a middle pipe clamped between the outer pipe and the inner pipe. The cystic duct opening device and method provided by the invention have the benefits that by effectively utilizing the matching of a telescopic cylinder and a disc type cylinder, the elongation of the pusher pipeline as well as the deflection and expansion of the expander is realized, and further, the opening of a cystic duct is realized, so that a convenient passage is provided for the situation that a choledochoscope goes in and goes out of the cystic duct, and the injury caused by forming an operating port on a gall bladder to a patient is effectively avoided; moreover, the secondary injury in the operating process is reduced or operation risks or sequelae are reduced.

Description

technical field [0001] The invention belongs to the field of medical operation instruments, and in particular relates to a device and method for expanding the cystic duct in biliary tract operation. Background technique [0002] The cystic duct is a muscular structure with folds inside, which is difficult to pass through. During the operation, it is often necessary to pass the choledochoscope through the cystic duct into the bile duct to extract stones. At present, in the common bile duct stone operation, the common bile duct is incised, and the choledochoscope enters the common bile duct through the common bile duct incision to remove stones and other substances. [0003] However, the current choledocholithiasis surgical methods mainly have the following problems: [0004] 1) Stone extraction through the cystic duct into the choledochoscope: the expansion of ordinary instruments cannot provide a path for the passage of the choledochoscope. Excessive dilation of the cystic ...

AI Technical Summary

Problems solved by technology

[0004] 1) Stone extraction through the cystic duct into the choledochoscope: the expansion of ordinary instruments cannot provide a path for the passage of the choledochoscope. Excessive dilation of the cystic duct reduces its surgical value and causes secondary damage, especially when there are many gallstones in the gallbladder, or accompanied by When the gallbladder is edema, the gallbladder is often torn due to more hard gallstones or a thinner gallbladder wall, causing bile and gallstones to scatter into the abdominal cavity. Cleaning up the scattered bile and gallstones often seriously prolongs the operation time and increases the risk of surgery

Dirty removal of stones may also lead to serious consequences such as postoperative infection, oppression of organs, and even perforation of the digestive tract.

[0005] 2) Incision of the common bile duct into the choledochoscope for stone extraction: after the common bile duct incision, the healing cannot be done well, the wound area will be increased, and the postoperative recovery time will be prolonged, and it is easy to cause sequelae after the operation

Reduced the indications for laparoscopic minimally invasive surgery, resulting in patients not being able to receive minimally invasive treatment

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