Key result
Finite element simulation and experimental testing of cobalt-chromium stents matched satisfactorily for radial strength, recoil, foreshortening, and dogboning.
Why the study?
Cardiovascular stenting procedure effectiveness depends on crimping and expansion characteristics influenced by design parameters.
A validated finite element model for CoCr stents can accurately predict expansion characteristics, potentially optimizing future stent designs and reducing development time.
Computational stent models aid design iteration; leaves open clinical translation pending prospective validation.
The effectiveness of cardiovascular stenting procedure depends on the crimping and expansion characteristics of a stent, influenced by its design parameters. In this study, CoCr stents are fabricated, crimped on a tri-folded balloon, and expanded using manual inflation device. Similarly, in the finite element model, a tri-folded balloon is used to expand the stent. The length and diameter are measured to evaluate the radial strength, recoil, foreshortening, and dogboning. The simulation and experimental results match satisfactorily. The validated FE model can be used with confidence to optimize future stent designs, thus reducing the number of testing and product development time.
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Kumar et al. (2020) studied this question. Cobalt-chromium stent vs. Finite element model was evaluated on Radial strength, recoil, foreshortening, and dogboning. Finite element simulation and experimental testing of cobalt-chromium stents matched satisfactorily for radial strength, recoil, foreshortening, and dogboning.
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