About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Applications
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Presentation Title |
Finite Element Modeling of Failure Modes during 3D Printed Polymeric Bioresorbable Vascular Scaffold Crimping |
Author(s) |
Caralyn Collins, Cheng Sun, Henry Ware, Yonghui Ding, Huifeng Wang, Guillermo Ameer |
On-Site Speaker (Planned) |
Caralyn Collins |
Abstract Scope |
Endovascular therapy using metal stents has been widely established to restore blood flow through blocked arteries. However, the permanent presence of the stents has resulted in high restenosis rates. Utilizing digital light processing-based stereolithography for fabrication, polymeric bioresorbable vascular scaffolds (BVSs) have emerged as a potential solution to these problems. Polymeric BVSs offer potential advantages by providing initial support to prevent recoil and slowly degrading to restore vasomotion and eliminate residual foreign materials. This transition brings new challenges corresponding to the drastically different material characteristics of metals and polymers. In particular, this study focuses on the crimping process for loading the BVS into a catheter prior to clinical deployment. We developed a numerical model to simulate the crimping process of 3D printed BVSs using experimentally measured bulk material properties in ABAQUS. We quantitatively evaluate potential failure modes for the candidate BVS design, which provides insight for further design optimization. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |