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

A double-pigtail, tunnel-type technology, applied to wound drainage devices, coatings, catheters, etc., to reduce economic burden, reduce infection, and increase aperture

Pending Publication Date: 2022-06-07
SHANGHAI FIRST PEOPLES HOSPITAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 trac...

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

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Embodiment 1

[0027] Please see attached figure 1 , figure 1 A schematic structural diagram of a Z-shaped double pigtail tunnel type multi-sided biliary drainage stent of the present invention. A Z-type double-pigtail tunnel-type multi-side hole biliary drainage stent, the Z-type double-pig-tail tunnel-type multi-side hole biliary drainage stent comprises a stent body 1 and a double-pigtail spiral structure 2; the stent body 1 and the double-pigtails Spiral structure 2 is a hollow circular tube structure, made of elastic polyester PCT poly(CL-co-TOSUO) material, the tube wall thickness is about 1mm, and the inner and outer surfaces of the tube are also coated with a hydrophilic coating by electrospinning technology. layer; the Z-shaped fold angle on the described stent body 1 is 130°-135°, the length is 5, 7, 9 or 12 cm, and the diameter is 5, 7 or 9F; the double pigtail spiral structure 2 is nearly circularly coiled, They are respectively arranged at both ends of the bracket main body 1,...

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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...

Claims

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Application Information

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IPC IPC(8): A61M27/00A61M25/00
CPCA61M27/002A61M25/0045A61M25/007A61M2205/02A61M2205/32A61M2210/1042A61M2025/0046A61M2025/0047A61M2210/005
Inventor 李百文倪建波谢旎彭魁余兰婷谢浩然陆嘉伟
Owner SHANGHAI FIRST PEOPLES HOSPITAL
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