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10名正常人二尖瓣膜的一维拉伸测试 被引量:3

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摘要 目的 通过测量正常二尖瓣膜的一维拉伸力学性能 ,探讨二尖瓣膜优良力学特性的原因 ,进而从力学角度分析瓣膜流体力学。方法 用软组织生物材料试验机对正常二尖瓣膜前瓣的径向和环向分别进行一维拉伸试验 ,了解瓣膜的力学性能。结果 正常二尖瓣膜前瓣存在应力滞后现象 ,其径向和环向特征 ε分别为 0 .6 11± 0 .0 11和 0 .432±0 .0 5 8,特征 E分别为 2 18± 2 4.5 9KN/ m2 和 2 5 3± 12 .78KN/ m2 ,两者有显著性差别。结论 正常二尖瓣膜前瓣为粘弹性体 ,结构特性为各向异性 。
出处 《福建医药杂志》 CAS 2001年第4期89-91,共3页 Fujian Medical Journal
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