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Manufacturing method of magnesium alloy cardiovascular stent, stent and perform of stent

A manufacturing method, magnesium alloy technology, applied in the direction of brackets, etc., can solve the problems of high cost and complex process, and achieve the effect of reducing production cost, simplifying process and avoiding complex process

Active Publication Date: 2016-05-11
深圳尤尼智康医疗科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The invention provides a manufacturing method of a magnesium alloy cardiovascular stent, a stent and a prefabricated body of the stent, and solves the technical problems of complex process and high cost existing in the production of the existing magnesium alloy stent

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  • Manufacturing method of magnesium alloy cardiovascular stent, stent and perform of stent
  • Manufacturing method of magnesium alloy cardiovascular stent, stent and perform of stent
  • Manufacturing method of magnesium alloy cardiovascular stent, stent and perform of stent

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, it is a structural diagram of a prefabricated body for making a magnesium alloy cardiovascular stent proposed by an embodiment of the present invention, the prefabricated body includes a stent body and an inner lining 6; the stent body is a tubular body with a mesh structure; the tubular body The mesh structure is composed of axial ribs 3 and beam ribs 4; the section 5 of the axial ribs 3 is trapezoidal; the side 7 of the beam ribs is inclined to the inside of the tubular body; the inner lining 6 is a tubular body placed inside the tubular body.

[0026] The prefabricated body is prepared based on 3D printing technology; the inner diameter of the stent body is smaller than the inner diameter of the final formed magnesium alloy cardiovascular stent by two magnetron sputtering magnesium al...

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Abstract

The invention provides a manufacturing method of a magnesium alloy cardiovascular stent, the stent and a perform of the stent, aiming at solving the technical problems of an existing magnesium alloy stent manufacturing method which is complex in process and high in cost. The method comprises the following steps: manufacturing the perform of the magnesium alloy cardiovascular stent; sputtering a magnesium alloy target material on the surface of the perform through magnetron sputtering; and immersing the perform which is sputtered with the magnesium alloy target material in an alcohol solution or water solution, so that the perform is dissolved to obtain the magnesium alloy cardiovascular stent, wherein the perform is prepared by printing on the basis of a 3D printing technology, and the perform comprises a stent main body and a liner; the stent main body is a tubular body of a meshed structure; the meshed structure of the tubular body is composed of axial ribs and beam ribs; the cross sections of the axial ribs are of trapezoidal structures; the side faces of the beam ribs are inclined inwards the tubular body; and the liner is of a tubular structure which is arranged on the inner side of the tubular body. The design of the trapezoidal cross sections of the axial ribs and the liner is conducive to the dissolving and peeling of the perform, and the appearance of burrs during magnetron sputtering is avoided, the process is simplified and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of implanted medical devices for human body, and in particular relates to a manufacturing method of a magnesium alloy cardiovascular stent, a stent and a prefabricated body of the stent. Background technique [0002] Cardiovascular stents made of stainless steel, nickel-titanium alloy or cobalt-chromium alloy have been widely used clinically. [0003] The analysis of clinical results found that the local inflammatory response caused by these metal stents may lead to the risk of late thrombosis, and then the second generation of drug-coated coated stents appeared. Growing around the stent, the drug on the coated stent will eventually be exhausted, and the metal stent after the drug is exhausted will also cause local inflammatory reactions. In order to solve the problem of local inflammation caused by metal stents, a completely degradable stent is designed in the prior art, mainly using magnesium alloy materi...

Claims

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Application Information

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IPC IPC(8): A61F2/90
CPCA61F2/90
Inventor 王红张莉胡海龙
Owner 深圳尤尼智康医疗科技有限公司
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