Preparing method of biliary-tract carriage carrying about medicine

A technology for internal stents and biliary tracts, which is applied in the field of preparation of biliary internal stents carrying drugs, which can solve the problems of uneven and difficult mixing of drugs and excipients, and achieve the effects of proper methods, accurate medication, and simple operations
CN101069660BInactive Publication Date: 2010-09-15THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
Publication Date
2010-09-15
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention relates to a biliary tract interior support frame containing medicine and its preparation method. Said biliary tract interior support frame includes tubular supporting tube which can open cavitary tract of biliary duct and is equipped with several medicine-releasing holes. The inner wall of the invented tubular supporting tube has a layer of medicine-stored layer made up by mixing medicine and excipient. Several biliary tract interior suppert frames can be series-connected together. Said invention also provides the concrete steps of its preparation method.
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Description

technical field

[0001] The invention relates to a stent implantable in the biliary tract of a human body, in particular to a method capable of preparing a biliary stent carrying medicine. Background technique

[0002] Malignant obstruction of the biliary tract is mostly caused by compression of the hepatic and bile ducts by primary cholangiocarcinoma, liver cancer, pancreatic head cancer, ampulla cancer, gallbladder cancer and other metastatic cancers. Biliary stents relieve symptoms caused by strictures or blockages by dilating narrowed bile ducts or clearing blocked ones. However, stent implantation also has some shortcomings, such as restenosis after implantation is still a clinical problem, the restenosis rate is 13.8%, and a series of symptoms of obstructive jaundice appear after stenosis. Studies on the etiology of stent restenosis have shown that the causes of stent restenosis include tumor growth, tissue reaction hyperplasia, and biliary sludge formation. It has be...

Claims

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