北京生物医学工程

主动脉与肺动脉组织的生物力学特性比较

Comparison of Biomechanical Properties Between Aorta and Pulmonary Arteries

作者：张禹张健群刘志成赵爽闫松华

单位：首都医科大学生物医学工程学院(北京100069）

分类号：

出版年·卷·期（页码）：2011·30·2（159-165）

摘要：

目的通过对正常人主动脉与肺动脉组织之间拉伸力学特性的对比研究，为Ross手术提供生物力学实
验依据。方法取死亡3~4h内正常国人主、肺动脉壁，主、肺动脉窦壁，主、肺动脉瓣膜，制作成约长
10mm、宽6mm的试验样本，用Boss 3330实验机对样本进行拉伸实验。结果环向和纵向的主动脉壁, 主
动脉瓣膜，主动脉窦壁与肺动脉壁，肺动脉瓣膜，肺动脉窦壁的弹性模量及抗拉强度均无显著性差异
（P>0.05）。结论主动脉壁、主动脉瓣膜、主动脉窦壁与肺动脉壁、肺动脉瓣膜、肺动脉窦壁的生物力
学性质基本相似。

Objective To compare the biomechanical properties of fresh tissues between
aorta and pulmonary arteries from normal corpse and to provide the scientific basis for the
Ross procedure in biomechanics. Methods The blood vessel walls, sinus walls and valves of
aorta and pulmonary arteries were collected from normal Chinese cadavers within 3-4 hours
and made into several specimens with length 10mm and width 6mm. The tensile test of
specimens were carried out by using instrument Bose 3330. Results Tensile strength and the
elastic modulus of the blood vessel wall, sinus wall and valve had no significant
differences between aorta and pulmonary arteries both in circumferential and axial
directions (P>0.05). Conclusion Biomechanical properties of the blood vessel wall, valve,
sinus wall between aorta and pulmonary arteries are almost similar.

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