The biliary machine has the functions of secreting, storing, concentrating and transporting bile, and performs an critical regulatory position in the discharge of bile into the duodenum. Malignant biliary obstruction because of malignant tumors which include cholangiocarcinoma, liver cancer, pancr

Biliary stent implantation normally refers to biliary stent implantation surgical treatment. Biliary stents are commonly round stents with a diameter of 6-8mm. Biliary stent implantation is specifically used to deal with biliary obstruction. by way of the use of implanting a biliary stent inside the