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Updated: Jun 21, 2026

Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention
Published on: September 18, 2015
Multi-objective optimization of auxetic coronary stents based on finite element simulation and surrogate modeling
Yanyan Wan1, Xiaoyan Liu1, Kuangrong Hao1
1College of Information Science and Technology, Donghua University, Shanghai, China.
None:
High cost of clinical trials hinders further enhancement of comprehensive mechanical properties of bioresorbable scaffolds (BRS). Therefore, a multi-objective optimization method combining surrogate modeling and finite element simulation is proposed, based on the evaluation of stents with various auxetic structures and materials. The results demonstrated that re-entrant hexagon stent made of PLA (PLA-RH stent) was a more ideal candidate, with superior radial recoil and force. Following optimization, PLA-RH stent decreased bending stiffness by 60.12%, without compromising radial performances. This method enables more precise and efficient optimization and the proposed auxetic structure introduces innovative concepts for future design of stents.
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