Reversed-a-shaped nasobiliary drainage tube

Abstract

The invention provides a reversed-a-shaped nasobiliary drainage tube. The drainage tube particularly is a single-channel pipe, and comprises a nasobiliary drainage tube head, a drainage part, a bent part and a leading-out part; the drainage part comprises a plurality of bile drainage holes; the reversed-a-shaped nasobiliary drainage tube is placed in a human body, the head of the nasobiliary drainage tube extends into a right hepatic duct, the bile drainage holes are close to the primary tube wall of a duodenum, and the bile drainage holes comprises middle holes and triangular holes connectedwith the middle holes and formed in the left sides and the right sides of the middle holes; the bent part is provided with a plurality of groups of bent corners to form a reverse a shape; and the leading-out part extends out of the human body and is connected with a drainage bag. Under the guide of a guide wire, the drainage tube can be easily placed into the intrahepatic bile duct through duodenal papilla, has a better anti-skid effect, is easy to pull out, and has small stimulation to the duodenal papilla.

Description

technical field [0001] The invention relates to a minimally invasive medical technology and a surgical instrument, in particular to an anti-a-shaped nasobiliary drainage tube. Background technique [0002] Endoscopic nasobiliary drainage is a routine technique in ERCP operations. It can drain bile and reduce bile duct pressure. It is generally used to prevent complications such as postoperative acute cholangitis and acute pancreatitis. It can be judged by nasobiliary drainage tube angiography Whether there are stones left or not, in addition to observing the properties of bile, judging the degree of recovery of liver function, using antibiotics and hemostatic drugs to flush through the nasobiliary drainage tube, to promote the recovery of infection, and to prevent and treat postoperative delayed biliary bleeding. [0003] The currently used nasobiliary tubes include single pigtail and loop-type nasobiliary drainage tubes. The single pigtail nasobiliary drainage tube has a go...

AI Technical Summary

Problems solved by technology

[0003] The currently used nasobiliary tubes include single pigtail and loop-type nasobiliary drainage tubes. The single pigtail nasobiliary drainage tube has a good anti-displacement effect after the head end is looped, but it is generally used in patients with significant dilation of intrahepatic and extrahepatic bile ducts, such as There is no expansion of the extrahepatic and extrahepatic bile ducts, and the head of the nasobiliary drainage tube cannot be looped, and the formed curved tube is easy to compress the bile duct wall, resulting in postoperative pain, bile duct ulcer, bleeding and other complications

The head end of the loop nasobiliary drainage tube is straight, and the body has two 60° angles, which has a good anti-displacement effect. However, the following defects are found in the clinical application of the loop nasobiliary drainage tube: ①The loop of the nasobiliary duct is generally located at the pylorus, causing The nasobiliary duct can easily compress the opening of the duodenal pancreatic duct and induce acute pancreatitis; ②The head of the looped nasobiliary duct is straight, and it is difficult to insert the nasobiliary drainage tube directly into the bile duct with a guide wire. ③ The common bile duct and the duodenum form an acute angle, while the head end of the loop nasobiliary drainage is straight. When the drainage tube is pulled out, the straight head will easily lead to The common bile duct is angled, and the head of the drainage tube is easy to scratch the bile duct wall and duodenal papilla, leading to complications such as bleeding, acute cholangitis, and pancreatitis

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