覆膜支架的金属支架结构设计对其顺应性的影响  

Influence of Structural Design of Metal Stent on the Compliance of Stent Graft

作　　者：关颖[1] 林婧[1,2] 关国平[1,2] 王璐[1,2] GUAN Ying;LIN Jing;GUAN Guoping;WANG Lu(College of Textiles,Donghua University,Shanghai 201620,China;Key Laboratory of Textile Science & Technology,Ministry of Education,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学纺织学院,上海201620 [2]东华大学纺织面料技术教育部重点实验室,上海201620

出　　处：《东华大学学报（自然科学版）》2019年第3期370-374,380,共6页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金资助项目(81371648,81770508);教育部纺织生物医用材料与技术创新引智基地“111计划”资助项目(B07024);东华大学博士研究生创新基金资助项目(BCZD2016011)

摘　　要：为优化覆膜支架的顺应性,探索合理的金属支架结构参数,设计并制备了一系列结构差异化的覆膜支架,并对其顺应性进行表征。结果表明:随着金属支架角度的增大,金属支架段同一圆周内的金属丝上和覆膜上相邻两点顺应性差异增大;随着金属支架环间的距离增大,覆膜段顺应性有所增大;相较于Z型金属支架,M型金属支架段的顺应性沿圆周更为均匀一致,从血流动力学的角度考虑,M型支架可能更具优势。因此,通过适当增大金属支架角度、支架环间距离及采用M型支架则有利于提高覆膜支架的顺应性。In order to improve the compliance of stent graft and explore the reasonable structural parameters of metal stents,a series of stent grafts with structurally differentiated stents were designed and prepared,and their compliance were evaluated.The results show that the compliance difference of neighboring test positions on stent and graft in one circle in stented zone increases with the increased apex angle.With the increase of stent spacing,the compliance of graft zone increases.Compared with Z-stented graft,the compliance of stented zone of M-stented graft tends to be more uniform circumferentially.From the hemodynamics point of view,M-stented configuration tends to be more advantage.Appropriate increase of stent apex angle and stent spacing as well as incorporating M-stented graft will be helpful to improve the stent graft compliance.

关 键 词：覆膜支架 金属支架 结构设计 顺应性 

分 类 号：TS106.67[轻工技术与工程—纺织工程]