Biomechanics of abdominal aortic aneurysm in the presence of endoluminal thrombus: Experimental characterisation and structural static computational analysis
Biomechanics of abdominal aortic aneurysm in the presence of endoluminal thrombus: Experimental characterisation and structural static computational analysis
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DOI：
10.1016/s1078-5884(98)80031-2
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发表时间：
1998-04-01
影响因子：
5.7
通讯作者：
Fumero, R
中科院分区：
文献类型：
--
作者：
Di Martino, E;Mantero, S;Fumero, R
目的：评估腔内血栓和腹主动脉瘤（AAA）behavior.Materials和方法的主动脉壁的生物力学和几何参数所起的作用：21个AAA血栓标本进行AAA修复和数值评估的腹主动脉瘤壁应力和应变分布的拉伸试验。分析参数为管腔偏心率、血栓杨氏模量和主动脉壁本构方程。数值分析显示的力学行为的AAA作为管腔偏心率和生物力学parameters.Conclusions的函数：良好的组织血栓减少的压力负荷对动脉瘤主动脉壁的影响。
Objectives: To evaluate the role played by biomechanical and geometrical parameters of endoluminal thrombus and of aortic wall on abdominal aortic aneurysm (AAA) behaviour.Materials and methods: Tensile tests on 21 AAA thrombus specimens from six patients undergoing AAA repair and numerical evaluation of aneurysmal aortic wall stress and strain distribution. Parameters of the analysis were lumen eccentricity, thrombus Young's Modulus and the aortic wall constitutive equation.Results: There was a linear stress/strain for all the thrombus specimens. The numerical analyses show the mechanical behaviour of AAA as a function of lumen eccentricity and biomechanical parameters.Conclusions: Well organised thrombus reduces the effect of the pressure load on the aneurysmal aortic wall.