The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2018
Filed:
Apr. 11, 2013
Lifetech Scientific (Shenzhen) Co., Ltd., Shenzhen, CN;
Deyuan Zhang, Shenzhen, CN;
Wenjiao Lin, Shenzhen, CN;
Xiangdong Liu, Shenzhen, CN;
Wenbin Wang, Shenzhen, CN;
Abstract
A bioabsorbable medical device or a medical device component comprises an absorbable component prepared by subjecting a prefabricated component of an iron-based raw material to ion nitriding. Substance composition inside the absorbable component changes with the depth from the surface. The absorbable component comprises at least a first part and a second part. The first part surrounds the second part. Hardness of the first part is higher than hardness of the second part. An interface exists between the first part and the second part. A crack generated in the first part is impeded by the interface when extending to the second part. On the premise of ensuring radial stand strength, the bioabsorbable medical device or medical device component and a preparation method thereof reduce wall thickness of an iron-based stand, improve a stand corrosion rate and malleability, and achieve broader adaptability.