Numerical Investigation of the Flexibility of a New Self-Expandable Tapered Stent
| Autor: | Ji Song, Jiannong Jiang, Deng Yongquan, Hongfei Zhu, Xiang Shen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Mechanical property
Flexibility (anatomy) Materials science Self expandable Applied Mathematics Mechanical Engineering medicine.medical_treatment 0206 medical engineering Stent 02 engineering and technology 030204 cardiovascular system & hematology Condensed Matter Physics 020601 biomedical engineering Finite element method 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure medicine Stent design Biomedical engineering |
| Zdroj: | Journal of Mechanics. 36:577-584 |
| ISSN: | 1811-8216 1727-7191 |
| DOI: | 10.1017/jmech.2020.11 |
| Popis: | Flexibility is one of the important mechanical performance parameters of stent. The flexibility of tapered stents, especially self-expanding tapered stents, remains unknown. In this study, we developed a new selfexpanding tapered stent for tapered arteries and performed a numerical investigation of stent flexibility by using finite element method. The effect of stent design parameters, including taper and link space width, on stent flexibility was studied. The flexibility of the proposed stent was also compared with that of traditional cylindrical stents. Results show that the tapered stent is more flexible than the traditional cylindrical stent. Furthermore, the flexibility of the tapered stent increases with increasing stent taper and stent link space width. The increase in the stent link space width can contribute to the reduction in the peak stress. Therefore, tapered stents with high link space width will improve the stent flexibility. This work provides useful information for improvement of stent design and clinical selection. |
| Databáze: | OpenAIRE |
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