Abstract: Radial supporting performance is the important indicator that should be taken into account in the design process of vascular stents. In this research, the influence of wire diameter, height of main crest, number of unit, circumferential length ratio, height ratio on radial supporting performance and stability of two different stents during work process was explored through finite element simulation. The results showed that the maximum principle strain appeared at the corner piece of the main crest during work process, indicating that this was the risk point of failure. The wire diameter had the largest influence on radial supporting performance, followed by height of main crest, while other factors had less influence. The increase of wire diameter and number of unit reduced the stability of radial supporting performance during work process, while other factors had no obvious influence. The radial supporting performance of both structures was improved with the wire diameter increasing. And the radial supporting performance of cis-structure was not changed while that of trans-structure was decreased with other four facors increasing. Under the effect of various factors, the radial supporting performance of trans-structure was always superior to that of cis-structure.
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2019, Vol. 33 
