Journal of Shanghai Jiaotong University ›› 2012, Vol. 46 ›› Issue (04): 646-650.

• Automation Technique, Computer Technology • Previous Articles     Next Articles

Influence of Crimping on the Performances of Balloon Expandable Stents

 WANG  Ming, MA  Quan-Chao, ZHANG  Wen-Guang, LUO  Yun   

  1. (School of Mechanical Engineering, State Key Lab. of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2011-08-05 Online:2012-04-28 Published:2012-04-28

Abstract: Plastic deformation and work hardening may occur in crimping, which can result in changes of material properties and affect the performance of stents. A complete deformation procedure of a typical stent was simulated using finite element method. Its mechanical performances were evaluated and compared with that using a simplified procedure (omitting the process of stent crimping). It was found that the crimping has a significant influence on the stent shape, stress distribution, recoil rate and the maximum expandable diameter of stent.

Key words: crimping, work hardening, balloon expandable stent

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