Biliary tract spiral particle bracket and bracket conveying catheter set

Abstract

The invention relates to the field of medical apparatuses, in particular to a biliary tract spiral particle bracket and a bracket conveying catheter set. The biliary tract spiral particle bracket andthe bracket conveying catheter set comprise the spiral particle bracket and a bracket conveying catheter; the spiral particle bracket comprises a spiral bracket woven mesh, a spiral supporting layer and a spiral particle pipe; the bracket conveying catheter comprises an outer sleeve, a middle sleeve, a guiding sleeve, a catheter head sleeve, a catheter head and two supporting assemblies; in the using process, particles are loaded in a particle chamber, the spiral particle bracket sleeves the bracket conveying catheter, the bracket conveying catheter is introduced in a patient, and pushing of all branch catheters of the bracket conveying catheter makes two supporting needles close to each other to further compress the spiral particle bracket, so that the spiral particle bracket is shortenedto be minimum, and the circumferential outer diameter of the spiral particle bracket is maximum to support the inner wall of the biliary tract. The spiral particle bracket is stably kept at a shortest length and a largest outer diameter so as to stably support the inner wall of the biliary tract of a patient and conduct particle radiotherapy, and is simple, convenient and practical.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a biliary helical particle stent and a stent delivery catheter set. Background technique [0002] The incidence of cholangiocarcinoma is on the rise, and most of them have developed to the middle and late stages when they go to the doctor, often with severe obstructive jaundice, poor general condition, and obvious abnormal liver function. In most cases, surgical resection is difficult and the prognosis is poor. . For cholangiocarcinoma not suitable for surgical resection, palliative treatment with bile duct decompression is generally used. At present, the commonly used non-surgical methods are percutaneous transhepatic biliary drainage (PTBD), percutaneous transhepatic biliary stent placement, or endoscopic retrograde biliary stent placement through the duodenal papilla to relieve the biliary obstruction. Obstruction, bile drainage, and improvement of quality of life, while metho...

AI Technical Summary

Problems solved by technology

In the prior art, particles can be loaded inside the particle catheter and transported to the patient's biliary tract tumor for radiotherapy, but the existing particle

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