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| 可降解支架的体内外降解研究进展 |
| Research Progress on Degradation of Biodegradable Scaffolds in vivo and in vitro |
| 投稿时间：2020-05-29 修订日期：2021-01-07 |
| DOI： |
| 中文关键词: 可降解冠脉支架 镁合金 铁合金 锌合金 聚乳酸 体内外降解 |
| 英文关键词: degradable coronary stent magnesium alloy iron alloy zinc alloy polylactic acid degradation in vivo and in vivo |
| 基金项目:国家重点研发项目(编号2017YFC1105000) |
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| 中文摘要: |
| 目的：收集整理国内外文献对可降解冠脉支架的研究成果，对其代表性材料进行深入分析，以期对可降解支架的研发与优化提供参考。
方法：采用文献研究法，检索PubMed数据库、中国知网数据库、中国万方数据库1998至2020年的文献，从可降解冠脉支架代表性材料的特性、体内外降解情况及面临的挑战方面分别论述。
结果与结论：目前的研究方向主要分为可降解金属支架和可降解聚合物支架，研究较多的冠脉支架材料是镁、铁、锌合金与聚乳酸材料。可降解金属支架支撑性好但降解时间长，且降解速率仍需改善；可降解聚合物支架生物相容性好且降解时间短，但机械性能较弱。不管是金属还是聚合物材料,研究都仅仅处于初期,以后也会有更多可降解材料的发现,可降解冠脉支架是一个持续研究的课题。 |
| 英文摘要: |
| Objective: Collect and sort out domestic and foreign literature on the research results of degradable coronary stents, and conduct in-depth analysis of its representative materials, in order to provide references for the development and optimization of degradable stents.
Methods: Using the literature research method, we searched PubMed database, CNKI database, and China Wanfang database from 1998 to 2020, and discussed the characteristics of representative materials of biodegradable coronary stents, in vivo and in vitro degradation, and challenges.
Results and Conclusion: The current research directions are mainly divided into degradable metal stents and degradable polymer stents. The most researched coronary stent materials are magnesium, iron, zinc alloy and polylactic acid materials. The degradable metal stent has good supportability but has a long degradation time, and the degradation rate still needs to be improved; the degradable polymer stent has good biocompatibility and short degradation time, but its mechanical properties are weak. Regardless of whether it is metal or polymer materials, the research is only in the initial stage, and more biodegradable materials will be discovered in the future. Biodegradable coronary stents are an ongoing research topic. |
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