A kind of processing method of magnesium alloy thin-walled tube for degradable absorption stent

A processing method and magnesium alloy technology are applied in the field of processing magnesium alloy thin-walled tubes for degradable absorption stents, which can solve the problems of difficult tube processing, low tube quality and yield, and achieve excellent mechanical properties and smooth inner and outer surfaces. , the effect of high dimensional accuracy
CN108145380BActive Publication Date: 2019-09-06PEKING UNIV SHENZHEN GRADUATE SCHOOL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PEKING UNIV SHENZHEN GRADUATE SCHOOL
Publication Date
2019-09-06
Patent Text Reader

Abstract

The invention belongs to the technical field of biomaterials, and discloses a machining method for a magnesium alloy thin-walled pipe for a degradable and absorbable support. The technological processof the method comprises the steps of smelting, casting, extruding, extruding punching, boring and cleaning of the inner surface and the outer surface, annealing, drawing, repeated conduction of annealing and drawing and obtaining of finished products. In the whole repeated drawing process, the reducing deformation amount of the pipe needs to be controlled during each pass, and the matching relation between the reducing deformation amount and the wall reduction deformation amount is well adjusted at the same time. The pipe obtained through the process is high in precise, the inner surface andthe outer surface are smooth and clean, the mechanical performance is excellent, and the whole process is simple, good in controllability and high in economic benefits.
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Description

technical field

[0001] The invention belongs to the technical field of biomaterials, in particular to a processing method for a magnesium alloy thin-walled tube for a degradable absorbing bracket. Background technique

[0002] In recent years, with the improvement of living standards, the fat content of the national diet has been increasing, which makes cardiovascular disease one of the main fatal diseases of the people in all countries. In this regard, atherosclerosis causes blood vessel narrowing or even blockage most common. According to the statistics of the World Health Organization, it is predicted that by 2020, the number of people who will be life-threatening due to cardiovascular disease in my country will reach 4 million every year, which shows how much this disease threatens people's health. The most effective treatment modality for this type of disease is percutaneous transluminal coronary angioplasty. This interventional therapy technology began in the 1970s, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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