Fatigue behavior of stent in tapered arteries: The role of arterial tapering and stent material
| Autor: | Xiang Shen, Hongfei Zhu, Deng Yongquan, Ji Song, Jiabao Jiang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Chromium
medicine.medical_specialty medicine.medical_treatment 0206 medical engineering Finite Element Analysis Tapering 02 engineering and technology 03 medical and health sciences Fatigue resistance 0302 clinical medicine Materials Testing medicine Alloys cardiovascular diseases business.industry Mechanical Engineering Stent General Medicine Arteries Cobalt equipment and supplies 020601 biomedical engineering Vascular stent surgical procedures operative Stents Radiology Stress Mechanical business 030217 neurology & neurosurgery |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine. 233(10) |
| ISSN: | 2041-3033 |
| Popis: | Stenting has achieved great success in treating cardiovascular diseases due to its high efficiency and minimal invasiveness. However, fatigue of stents severely limits its long-term outcome. In this article, finite element method was adopted to study the effects of arterial tapering and stent material on the fatigue performance of stents. A series of tapered vessels with different taper levels and two sets of stents with different materials were modeled. The Goodman diagram was used to evaluate the fatigue resistance of stents. Results showed that the fatigue resistance of stents can be extremely improved by simply changing stent material. In addition, the taper of the arteries had an important influence on the fatigue resistance of the stent. The fatigue life of the stent will be shortened with the increase of the arterial taper. The method that predicted stent fatigue life in tapered vessels can help clinicians select stents that are more suitable for tapered vessels and help stent engineers design stents that are more resistant to fatigue. |
| Databáze: | OpenAIRE |
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