| 半圆形截面支架介入串联囊状动脉瘤的血流动力学仿真 |
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| 引用本文： | 张宏斌,张赟,曾堃,乔爱科.半圆形截面支架介入串联囊状动脉瘤的血流动力学仿真[J].中国生物医学工程学报,2010,29(1). |
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| 作者姓名： | 张宏斌 张赟 曾堃 乔爱科 |
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| 作者单位： | 北京工业大学生命科学与生物工程学院,北京,100124 |
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| 基金项目： | 国家自然科学基金资助项目，北京市自然科学基金资助项目 |
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| 摘 要： | 为了研究半圆形截面支架对颅内串联囊状动脉瘤血流动力学的影响,针对同一动脉瘤结构,构建无支架和4种截面支架介入动脉瘤的有限元模型,分别命名无支架为U型、圆形截面为C型、半圆形截面圆面朝向瘤腔为ES型、圆面朝向血管轴向为IS型,然后对模型中的生理脉动流进行计算流体动力学仿真。数值模拟的结果显示:有支架模型的腔内流速被有效削弱,壁面附近的流速很低;血流对瘤腔的冲击减弱,壁面切应力的量值和波动性降低,分布均衡;腔内压力在支架介入后略有升高。对比分析两个瘤腔,流动情况和壁面切应力基本相同,下游瘤腔的压力低于上游瘤腔。IS型的仿真结果更好,这为支架的结构设计提供了一些理论指导。
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| 关 键 词： | 支架 动脉瘤 血液动力学 计算流体动力学 壁面切应力 |
Hemodynamics Simulation of Intervention for Serial Saccular Aneurysm with Semi-circular Section Stent |
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| ZHANG Hong-Bin,ZHANG Yun,ZENG Kun,QIAO Ai-Ke.Hemodynamics Simulation of Intervention for Serial Saccular Aneurysm with Semi-circular Section Stent[J].Chinese Journal of Biomedical Engineering,2010,29(1). |
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| Authors: | ZHANG Hong-Bin ZHANG Yun ZENG Kun QIAO Ai-Ke |
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| Institution: | ZHANG Hong-Bin ZHANG Yun ZENG Kun QIAO Ai-Ke~*(College of Life Science , Bio-engineering,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | In order to investigate the hemodynamic effect of intervention for intracranial serial saccular aneurysm with semi-circular section stent,four finite element models of serial saccular aneurysms were constructed.These models were one model without stent intervention(U-type) and three models with bare stent intervention,including one with circular section stent(C-type),one with semi-circular section stent whose circular arch faces towards the aneurismal cavity(ES-type) and one with semi-circular section stent... |
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| Keywords: | stent aneurysm hemodynamics computational fluid dynamics wall shear stress |
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