关于合金血管剪贴机械性能和降解行为的研究
Hongxu Zhang1,2, Ming Gao2, Xiaoying Tian2
1Materials Science and Engineering, Shenyang University of Chemical Technology, 11# Street Shenyang Economic & Technology Development Area, Shenyang 110142, China.
Journal of functional biomaterials
|October 27, 2023
概括
一个新的P型生物降解合金血管片设计显示了比V型更好的性能. 这种P型片提供均的闭合和增强的机械稳定性,满足临床需求.
科学领域:
- 生物材料工程 生物材料工程
- 医疗器械设计 医疗器械设计
- 有限元分析 有限元分析
背景情况:
- (Mg) 合金血管片提供生物降解性和生物相容性,但遭受快速降解和低于最佳设计.
- 现有的V型Mg合金片表现出不均的应力分布和应力度等问题.
研究的目的:
- 使用有限元分析模拟和比较V型和新型P型Mg合金血管剪贴的性能.
- 研究Zr添加对P型Mg合金血管剪贴的机械性能和耐腐蚀性的影响.
主要方法:
- 使用有限元模拟 (Abaqus) 来建模Mg-Zn-Nd-Zr和Mg-Zn-Nd合金血管剪贴的紧过程.
- 在模拟生理条件下对V型和P型片设计进行比较分析.
- 评估不同P型剪贴组合的机械稳定性和腐蚀率 (降解).
主要成果:
- V型片显示压力分布不均,血管裂和压力度.
- P型血管片表现出没有空隙的均闭合,有效地减轻了应力度.
- 与Mg-Zn-Nd-Zr合金P型片相比,Mg-Zn-Nd-Zr合金P型片具有较高的耐腐蚀性 (2.02毫米/年) 和Mg-Zn-Nd (2.61毫米/年),并在第7天保持闭合.
结论:
- 采用P型血管片设计,对可生物降解Mg合金应用的V型设计进行了显著改进.
- 加入Zr可以增强Mg合金血管剪贴的机械稳定性和耐腐蚀性.
- 优化的P型Mg-Zn-Nd-Zr血管剪贴符合安全和稳定的血管封闭的临床要求.
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