Comparing coronary stent material performance on a common geometric platform through simulated bench testing.

摘要: Absorbable metallic stents (AMSs) are a newly emerging cardiovascular technology which has the potential to eliminate long-term patient health risks associated with conventional permanent stents. AMSs developed date have consisted of magnesium alloys or iron, materials inferior mechanical properties those used in stents, such as stainless steel and cobalt-chromium alloys. However, for be feasible widespread clinical use it is important that their performance comparable modern To date, performances magnesium, stent not been compared on common platform range metrics, flexibility, radial strength, recoil. In this study, comparison made through simulated bench testing, based finite-element modelling. The significance study allows limitations current AMS identified, will aid focusing future design. This also identification materials, thereby informing on-going development candidate biodegradable results indicate studied here can match recoil characteristics strength stents; however, achieve this, larger strut dimensions required. It predicted terms maximum absolute curvature longitudinal stiffness.