期刊文献+

腔内隔绝术用人造血管移植物(SG)织物覆膜的疲劳性能研究 被引量:1

Study of Fatigue Performances of the Textile Scaffold of the Stent-Graft (SG)
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摘要 对腔内隔绝术用人造血管移植物(stent-graft(SG))的织物覆膜进行动态疲劳性能研究,分析影响其疲劳性能的因素。利用加速疲劳测试仪,对4种覆膜样品进行疲劳性能的测试。实验以覆膜承受的脉动次数为时间点,分别是0次、2.6×107次以及1×108次(即相当于植入体内0、10个月以及38.5个月)。选择覆膜试样的管径,织物周向和轴向密度以及水渗透性在疲劳试验前后的变化作为疲劳性能的特征指标,这些指标在疲劳试验前后都有不同程度的变化。脉动压力在织物覆膜周向的作用比在轴向的作用要大;织物覆膜在最初阶段疲劳表现明显,而后趋于稳定;组成织物覆膜的纱线越粗,其疲劳表现越明显;复丝织物的疲劳表现比单丝织物更明显。
出处 《中国生物医学工程学报》 CAS CSCD 北大核心 2009年第4期637-640,F0004,共5页 Chinese Journal of Biomedical Engineering
基金 高等院校学科创新引智计划项目(B07024)
关键词 SG织物覆膜 疲劳性能 纺织结构参数 加速测试 脉动 textile scaffold of the stent-graft fatigue textile parameters accelerate pulsatile
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