TY - JOUR
T1 - Improvement of mechanical performance of bioresorbable magnesium alloy coronary artery stents through stent pattern redesign
AU - Wang, Qian
AU - Fang, Gang
AU - Zhao, Ying Hong
AU - Zhou, Jie
PY - 2018
Y1 - 2018
N2 - Optimized stent pattern design can effectively enhance the mechanical performance of magnesium alloy stents by adjusting strain distribution and evolution during stent deformation, thereby overcoming the limitations imposed by the intrinsic mechanical properties of magnesium alloys. In the present study, a new stent design pattern for magnesium alloys was proposed and compared to two existing stent design patterns. Measures of the mechanical performance of these three stents, including crimping and expanding deformability, radial scaffolding capacity, radial recoil and bending flexibility, were determined. Three-dimensional finite element (FE) models were built to predict the mechanical performance of the stents with the three design patterns and to assist in understanding the experimental results. The results showed that, overall, the stent with the new design pattern was superior to the stents based on the existing designs, though the expanding capacity of the newly designed stent still needed to be improved.
AB - Optimized stent pattern design can effectively enhance the mechanical performance of magnesium alloy stents by adjusting strain distribution and evolution during stent deformation, thereby overcoming the limitations imposed by the intrinsic mechanical properties of magnesium alloys. In the present study, a new stent design pattern for magnesium alloys was proposed and compared to two existing stent design patterns. Measures of the mechanical performance of these three stents, including crimping and expanding deformability, radial scaffolding capacity, radial recoil and bending flexibility, were determined. Three-dimensional finite element (FE) models were built to predict the mechanical performance of the stents with the three design patterns and to assist in understanding the experimental results. The results showed that, overall, the stent with the new design pattern was superior to the stents based on the existing designs, though the expanding capacity of the newly designed stent still needed to be improved.
KW - Bioresorbable stent
KW - Deformation behavior
KW - Finite element analysis
KW - Magnesium
KW - Mechanical property
UR - http://www.scopus.com/inward/record.url?scp=85057787436&partnerID=8YFLogxK
U2 - 10.3390/app8122461
DO - 10.3390/app8122461
M3 - Article
AN - SCOPUS:85057787436
VL - 8
JO - Applied Sciences (Switzerland)
JF - Applied Sciences (Switzerland)
IS - 12
M1 - 2461
ER -