【摘要】 目的 在日常生活中颈部的运动会导致血管以及支架发生一定的变形，该文探究血管的扭转变形对支架力学性能的定量影响。方法 在有限元仿真软件Abaqus中进行支架的压握、释放过程的数值模拟，带支架血管的扭转过程的数值模拟以及血管外壁压力的加载过程的数值模拟。结果 支架置入后，血管壁外表面施加载荷时，当施加载荷不变时，随着扭转角度的增加，血管内最小截面面积减小。结论 支架置入后，当外载荷固定时，随着扭转角度的上升支架的径向支撑能力会有所下降。更多还原

【Abstract】 Objective In daily life, the movement of the neck will cause certain deformation of the blood vessel and the stent. This study explores the quantitative influence of the torsion deformation of the blood vessel on the mechanical properties of the stent. Methods In the finite element simulation software Abaqus, the numerical simulation of the crimping and releasing process of the stent, the numerical simulation of the torsion process of the blood vessel with the stent, and the numerical simulation of the pressure loading process of the outer wall of the blood vessel were carried out. Results After the stent was implanted, when a load was applied to the outer surface of the blood vessel wall, when the applied load did not change, as the torsion angle increased, the smallest cross-sectional area in the blood vessel decreased. Conclusion After the stent is placed, when the external load is fixed, the radial support capacity of the stent will decrease as the torsion angle increases.更多还原