血管支架光纤激光切割技术  

Cardiovascular stent cutting technique by fiber laser

作　　者：官邦贵[1] 廖健宏[2] 秦炎福[1] 蒙红云[2] 

机构地区：[1]安徽科技学院理学院,安徽凤阳233100 [2]华南师范大学信息光电子科技学院,广东广州510631

出　　处：《应用光学》2009年第4期678-682,共5页Journal of Applied Optics

基　　金：安徽高等学校省级自然科学研究项目(KJ2009B155Z);安徽科技学院引进人才科研基金(ZRC2008188)

摘　　要：采用光纤激光器对血管支架进行了激光切割工艺研究,通过实验获得了聚焦透镜焦距及焦点位置、输出功率、切割速度、脉冲频率、脉冲宽度、辅助气体种类及压强等工艺参数对切缝宽度和缝面质量的影响规律。结果表明:缝宽随输出功率、频率、脉宽及辅助氧压的增大而增加,随着切割速度的增加而减小。在实验的基础上找出了血管支架切割的最佳工艺参数,在316LVM不锈钢细管上(管壁厚度为0.12 mm,直径为2 mm)获得了切缝均匀,缝宽小于20μm网状结构的血管支架。The technical study of laser cutting for cardiovascular stents was fulfilled. It is a typical application of laser micro-fabrication. The discipline of influence of the technological parameters （including the focal length of lens, focus position, laser power, cutting speed, pulse frequency, pulse width and assist gas pressure） on the quality of the cardiovascular stents were obtained with the most advanced fiber laser in the world. The results show that the kerf width increases with the increase of laser power, pulse frequency, pulse width and assist gas pressure, but decreases with the increase of cutting speed. The optimal technological parameters for cutting cardiovascular stents with laser were acquired on the base of the experiment. Stents whose kerf width is less than 20 μm were cut after a lot of experiments.

关 键 词：激光切割 血管支架 光纤激光器 工艺参数 

分 类 号：TN249[电子电信—物理电子学] TG485[金属学及工艺—焊接]