Numerical design studies of meander structures for self-expanding absorbable stents
Abstract: Absorbable stents made of poly-L-lactic acid (PLLA) exhibit inferior mechanical properties compared with metal based devices. Therefore, design optimization by means of finite element analysis (FEA) plays an important role in development of high performance absorbable stents. In the present study, three different meander structures made of PLLA material were compared in terms of their radial resistive force (RRF) using FEA. Material tests were performed to obtain input parameters of PLLA for the simulation. FEA was carried out to simulate the RRF and the length change of the meander structures as a function of the diameter. In addition, the numerical results were compared to the experimental outcome using corresponding meander based stents performing radial testing with a segmented head mechanism. Comparable high stresses occurred in the Ubends of the examined stent designs. In designs with a large radius of curvature less stress was observed while crimping. One meander structure developed comparatively higher structural resistance against radially acting forces, due to its curved strut design. In general, FEA revealed consistent results compared to the experimental investigations.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Numerical design studies of meander structures for self-expanding absorbable stents ; volume:7 ; number:2 ; year:2021 ; pages:735-738 ; extent:4
Current directions in biomedical engineering ; 7, Heft 2 (2021), 735-738 (gesamt 4)
- Creator
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Frank, Hagen
Dierke, Ariane
Brandt-Wunderlich, Christoph
Bohne, Eric
Kuske, Thomas
Stiehm, Michael
Schmitz, Klaus-Peter
Siewert, Stefan
- DOI
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10.1515/cdbme-2021-2188
- URN
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urn:nbn:de:101:1-2022101214190555580787
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:36 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Frank, Hagen
- Dierke, Ariane
- Brandt-Wunderlich, Christoph
- Bohne, Eric
- Kuske, Thomas
- Stiehm, Michael
- Schmitz, Klaus-Peter
- Siewert, Stefan
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