目前我国在研制设计支架时大多采用作图法,作图法有它简易、实观等优点,但随之带来是工作量大、精度低等无法克服的弱点。尤其是在设计新架型时,为使支架具有较理想的性能,必须对各种结构尺寸进行反复调整、修改。因此采用作图法作为主要设计手段势必延长设计周期,影响质量。随着电算技术的发展,在设计工作中利用电子计算机辅助设计已成为一项专门技术.在机械设计方面,应用电子计算机辅助设计的工作之一是用算法语言编写计算程序,解决各类 At present, most of the techniques used in the design and construction of stents in our country are drawing methods, which have the advantages of simplicity and practicality. However, the shortcomings such as heavy workload and low precision can not be overcome. Especially in the design of a new type of frame, in order to make the stent has better performance, the size of the various structures must be repeatedly adjusted, modified. Therefore, the use of mapping as the main design tool is bound to extend the design cycle, affecting the quality. With the development of computing technology, the use of computer-aided design in design work has become a specialized technology.In mechanical design, one of the applications of electronic computer-aided design is to use arithmetic language to write calculation programs to solve various types of