Z-shaped double-pigtail tunnel-type multi-side-hole biliary drainage stent

Abstract

The invention relates to a Z-shaped double-pigtail tunnel type multi-side-hole biliary tract drainage stent. The Z-shaped double-pigtail tunnel type multi-side-hole biliary tract drainage stent comprises a stent body and a double-pigtail spiral structure, wherein the stent body and the double-pigtail spiral structure are both of a hollow circular tube structure. The double pigtail spiral structures are coiled in a nearly circular manner and are respectively arranged at two ends of the bracket main body; a plurality of through holes which are distributed at equal intervals are formed in the two pigtail type spiral bending structures; marks are arranged on the two sides of the Z-shaped connecting position of the support body respectively. The transgastric wall pancreatic duct drainage support has the advantages that a traditional transgastric wall pancreatic duct drainage support is improved, the drainage efficiency can be improved, blockage is not prone to occurring, infection is reduced, the displacement risk and discomfort caused by visceral organ traction in the drainage process of a patient are relieved, meanwhile, economic burden of the patient is relieved, and the transgastric wall pancreatic duct drainage support has good clinical popularization prospects.

Description

technical field [0001] The invention relates to the technical field of medical drainage catheters, in particular to a Z-shaped double pigtail tunnel type multi-sided biliary duct drainage stent used for drainage through the gastric wall pancreatic duct under the guidance of ultrasound endoscope. Background technique [0002] Endoscopic retrograde cholangiopancreatography (ERCP) is a minimally invasive interventional method of endoscopic transduodenal cholangiopancreatography and a series of treatments, which plays an important role in the treatment of pancreatic diseases. Including acute idiopathic pancreatitis, acute pancreatobiliary stone-derived pancreatitis, acute pancreatitis with peripancreatic effusion, chronic pancreatitis with pseudocyst, pancreatic schizophrenia and pancreatic fistula, drainage and stent placement. Although ERCP is widely used, there is also a 5%-10% intubation failure rate. Common intubation difficulties include: duodenal diverticulum, pancreatic...

AI Technical Summary

Problems solved by technology

But about an improved traditional pancreatic duct drainage stent through the gastric wall, which can improve drainage efficiency and is not easy to block, thereby reducing infection, reducing the discomfort of organ traction during drainage, and helping to reduce the economic burden of patients. There is no relevant report about a Z-shaped double pigtail tunnel type multi-side hole biliary drainage stent with good clinical promotion prospect.

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