摘要
由于血管支架对心血管疾病患者的创伤小且治疗效果显著,近年来被广泛应用于临床。然而,支架在血管中长期遭受血流脉动压,可能会使其发生变形或疲劳失效。随着计算机技术的快速发展,有限元分析技术由于其高效及较低的成本被广泛应用于心血管疾病研究中。该研究通过计算机模拟技术对S型支架赋予3种材料属性,使用Goodman图表与动态安全系数评估支架制造材料对血管支架疲劳性能的影响。结果显示,支架在相同服役条件下,改变支架的材料可显著提高支架的疲劳强度。该研究结果可以帮助工程人员在临床治疗中根据具体应用场景选择合适的支架材料,获得满足使用要求的支架。
With the minimal trauma and significant therapeutic effects for patients with cardiovascular diseases,vascular stents were widely used in clinical practice in recent years.However,prolonged exposure of the stent to pulsatile blood pressure in the blood vessels may cause deformation or fatigue failure of the stent.With the rapid development of computer technology,finite element analysis technology is widely used in cardiovascular disease research due to its high efficiency and low cost.In this study,three material properties were assigned to S-shaped stents through computer simulation technology,and the impact of stent manufacturing materials on the fatigue performance of vascular stents was evaluated by using Goodman charts and dynamic safety factors.The results showed that with the same service conditions,changing the material of the stent can significantly improve the fatigue strength of the stent.The results of this study can assist engineers in selecting appropriate stent materials based on specific application scenarios in clinical treatment,thereby obtaining stents that meet usage requirements.
作者
杨航
宋喜艳
木合塔尔·克力木
买买提力·艾沙
Yang Hang;Song Xiyan;Muhetaer Kelimu;Maimaitili Aisha(School of Mechanical and Electrical Engineering,Xinjiang Institute of Technology,Aksu Xinjiang 843000,China;School of Mechanical Engineering,Xinjiang University,Urumqi Xinjiang 830017,China;First Affiliated Hospital of Xinjiang Medical University,Urumqi Xinjiang 830054,China)
出处
《医疗装备》
2024年第7期7-11,15,共6页
Medical Equipment
基金
2020年度中国脑卒中高危人群干预技术研究及推广项目(GN-2020R0001)。
关键词
血管支架
材料
疲劳
Vascular stent
Materials
Fatigue
