Simulation of the Effect of Circular Pit Micro Texture on Hemodynamics on the Inner Wall of Vascular Stent
Stent interventional surgery has become the first choice for the treatment of cardiovascular and cerebrovascular diseases, but the high rate of restenosis after stent implantation makes the long term treatment effect unsatisfactory. In order to reduce the probability of restenosis after stent imp...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Harbin University of Science and Technology Publications
2023-04-01
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| Series: | Journal of Harbin University of Science and Technology |
| Subjects: | |
| Online Access: | https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2196 |
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| Summary: | Stent interventional surgery has become the first choice for the treatment of cardiovascular and cerebrovascular diseases, but the high rate of restenosis after stent implantation makes the long term treatment effect unsatisfactory. In order to reduce the probability of restenosis after stent implantation and to improve the blood flow characteristics in the stent, based on the principle of bionics, the inner surface of the reticular / tubular vascular stent is designed on round pit texture with the diameter of 60μm and the depth of 30μm, 50μm and 70μm, respectively.The finite element simulation analysis method is used to explore the influence of different stent structures and depths of micro texture on the blood flow velocity and intravascular pressure in the stent.The results show that, compared with tubular stents, the presence of micro texture on the inner wall of the reticular stent can greatly increase the blood flow velocity in the stent and increase the blood pressure, especially when the depth is 30μm and 50μm.In addition, under the same conditions, the maximum change range of blood pressure in the reticular stent is smaller than the maximum change range of blood pressure in the tubular stent, which causes less damage to the blood vessel wall. |
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| ISSN: | 1007-2683 |