Human body absorbable blood vessel support and its manufacturing method

A vascular stent and a manufacturing method technology, applied in the field of medical devices, can solve the problems that the stent cannot be used, the elongation rate of the ferroalloy is not high enough, etc., and achieve the effects of shortening the absorption period, accelerating the absorption speed, and improving the flexural strength
CN101549170AActive Publication Date: 2009-10-07BIOTYX MEDICAL (SHENZHEN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BIOTYX MEDICAL (SHENZHEN) CO LTD
Publication Date
2009-10-07

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Abstract

The present invention provides a method for manufacturing human body absorbable blood vessel support, including the following steps: (1) support forming; (2) cleaning and pre-polishing the support; (3) performing surface alloying treatment to the support; (4) performing fine finish to the support after surface treatment. The invention also provides a human body absorbable blood vessel support, theinvention adopts a surface alloying technique so that the support has a compound diffusion layer with adjustable penetration depth, thereby improving the support intensity and simultaneously quickening the corrosion speed of the support and shortening the support absorption cycle. The yield strength and elongation rate can be modulated in a prodigious scope by controlling the distribution, shapeand depth of the composite diffusion layer, to reach the intensity and absorption cycle required by the support.
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Description

technical field

[0001] The invention belongs to the field of medical devices, and in particular relates to a blood vessel stent absorbable by a human body and a manufacturing method thereof. Background technique

[0002] Coronary atherosclerotic heart disease is one of the important causes of human death. Percutaneous transluminal coronary angioplasty is the main method for the treatment of coronary atherosclerotic heart disease. Interventional therapy for coronary heart disease began in 1977. After nearly 30 years of continuous development and improvement, equipment and technology have been continuously improved and improved. This technique has small trauma, quick effect, extremely low mortality and complication rate, and is well received by patients. Interventional therapy is now gradually becoming a new discipline after internal medicine and surgery.

[0003] From the initial stage of balloon dilation therapy to the stage of implantation of bare metal stents, to the wi...

Claims

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