Advances in coatings on magnesium alloys for cardiovascular stents-A review  

作　　者：Zhao-Qi Zhang Yong-Xin Yang Jing-An Li Rong-Chang Zeng Shao-Kang Guan 

机构地区：[1]School of Material Science and Engineering&Henan Key Laboratory of Advanced Magnesium Alloy&Key Laboratory of Materials Processing and Mold Technology(Ministry of Education),Zhengzhou University,100 Science Road,Zhengzhou,450001,PR China [2]Corrosion Laboratory for Light Metals,College of Material Science and Engineering,Shandong University of Science and Technology,Qingdao,266590,China

出　　处：《Bioactive Materials》2021年第12期4729-4757,共29页生物活性材料（英文）

基　　金：The authors are grateful for the financial support of the National Natural Science Foundation of China(No.U1804251);the National Key Research and Development Program of China(No.2017YFB0702504 and 2018YFC1106703).

摘　　要：Magnesium(Mg)and its alloys,as potential biodegradable materials,have drawn wide attention in the cardiovascular stent field because of their appropriate mechanical properties and biocompatibility.Nevertheless,the occurrence of thrombosis,inflammation,and restenosis of implanted Mg alloy stents caused by their poor corrosion resistance and insufficient endothelialization restrains their anticipated clinical applications.Numerous surface treatment tactics have mainly striven to modify the Mg alloy for inhibiting its degradation rate and enduing it with biological functionality.This review focuses on highlighting and summarizing the latest research progress in functionalized coatings on Mg alloys for cardiovascular stents over the last decade,regarding preparation strategies for metal oxide,metal hydroxide,inorganic nonmetallic,polymer,and their composite coatings;and the performance of these strategies in regulating degradation behavior and biofunction.Potential research direction is also concisely discussed to help guide biological functionalized strategies and inspire further innovations.It is hoped that this review can give assistance to the surface modification of cardiovascular Mg-based stents and promote future advancements in this emerging research field.

关 键 词：Magnesium alloy Cardiovascular stent Surface modification Rapid endothelialization Functional properties 

分 类 号：R318.08[医药卫生—生物医学工程]