Flexibility of Biodegradable Polymer Stents with Different Strut Geometries
Objective: Biodegradable stents (BDSs) represent a new technological development in the field of cardiovascular angioplasty; good flexibility helps stents pass through tortuous vessels during delivery and reduces the amount of damage caused to blood vessels. This study investigates the relationship...
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| Format: | Article |
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MDPI AG
2020-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/15/3332 |
| _version_ | 1797561249421066240 |
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| author | Chong Chen Yan Xiong Zhongyou Li Yu Chen |
| author_facet | Chong Chen Yan Xiong Zhongyou Li Yu Chen |
| author_sort | Chong Chen |
| collection | DOAJ |
| description | Objective: Biodegradable stents (BDSs) represent a new technological development in the field of cardiovascular angioplasty; good flexibility helps stents pass through tortuous vessels during delivery and reduces the amount of damage caused to blood vessels. This study investigates the relationship between flexibility and the geometry of BDS struts. Methods: Four stent struts with different geometry (circular, triangular, hexagonal, and spline curved) and the same links were modeled to evaluate their flexibility via a three-point bending experimental method and a numerical method. Results: The bending state of the four stents was well-balanced. The bending effect of the four stents was different. Under the same conditions, the circular and spline curved stents showed the best bending effects while the hexagonal stent was the worst. However, these differences were not significant. Conclusion: The flexibility of BDSs is related to the geometry of the struts and links; however, the geometry of the struts has less effect on flexibility than the links. The greater the area enclosed by the strut centerline, the better flexibility of the stent. |
| first_indexed | 2024-03-10T18:12:19Z |
| format | Article |
| id | doaj.art-b5c2e40280eb43b280806e219cc38a35 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T18:12:19Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-b5c2e40280eb43b280806e219cc38a352023-11-20T08:03:44ZengMDPI AGMaterials1996-19442020-07-011315333210.3390/ma13153332Flexibility of Biodegradable Polymer Stents with Different Strut GeometriesChong Chen0Yan Xiong1Zhongyou Li2Yu Chen3Department of Applied Mechanics, Sichuan University, Chengdu 610065, ChinaSchool of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaDepartment of Applied Mechanics, Sichuan University, Chengdu 610065, ChinaDepartment of Applied Mechanics, Sichuan University, Chengdu 610065, ChinaObjective: Biodegradable stents (BDSs) represent a new technological development in the field of cardiovascular angioplasty; good flexibility helps stents pass through tortuous vessels during delivery and reduces the amount of damage caused to blood vessels. This study investigates the relationship between flexibility and the geometry of BDS struts. Methods: Four stent struts with different geometry (circular, triangular, hexagonal, and spline curved) and the same links were modeled to evaluate their flexibility via a three-point bending experimental method and a numerical method. Results: The bending state of the four stents was well-balanced. The bending effect of the four stents was different. Under the same conditions, the circular and spline curved stents showed the best bending effects while the hexagonal stent was the worst. However, these differences were not significant. Conclusion: The flexibility of BDSs is related to the geometry of the struts and links; however, the geometry of the struts has less effect on flexibility than the links. The greater the area enclosed by the strut centerline, the better flexibility of the stent.https://www.mdpi.com/1996-1944/13/15/3332biodegradable stentflexibilityexperimentnumerical analysis |
| spellingShingle | Chong Chen Yan Xiong Zhongyou Li Yu Chen Flexibility of Biodegradable Polymer Stents with Different Strut Geometries Materials biodegradable stent flexibility experiment numerical analysis |
| title | Flexibility of Biodegradable Polymer Stents with Different Strut Geometries |
| title_full | Flexibility of Biodegradable Polymer Stents with Different Strut Geometries |
| title_fullStr | Flexibility of Biodegradable Polymer Stents with Different Strut Geometries |
| title_full_unstemmed | Flexibility of Biodegradable Polymer Stents with Different Strut Geometries |
| title_short | Flexibility of Biodegradable Polymer Stents with Different Strut Geometries |
| title_sort | flexibility of biodegradable polymer stents with different strut geometries |
| topic | biodegradable stent flexibility experiment numerical analysis |
| url | https://www.mdpi.com/1996-1944/13/15/3332 |
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