以无镍不锈钢为支架材料,以冠脉支架结构为研究对象,对其压缩和扩张过程中的力学行为和柔顺性能进行了模拟计算,研究了支架压握并扩张后的轴向回弹率、径向回弹率以及不同端部网丝宽度支架的变形行为,计算出支架的弯矩-挠度曲线及支架的柔软度。结果表明,所研究的无镍不锈钢支架具有较小的轴向与径向回弹率,在变形过程中表现出良好的弹性弯曲变形性能。 With nickel-free stainless steel as the scaffold material and the coronary stent structure as the research object, the mechanical behaviors and compliance properties during compression and expansion of the scaffold were simulated and the axial resilience rate after stent crimping and expanding was studied. Radial rebound rate and the deformation behavior of stent with different widths of end mesh, the bending moment-deflection curve and the flexibility of the stent were calculated. The results show that the nickel-free stainless steel stent has a small axial and radial rebound rate, and shows good elastic bending deformation performance during deformation.