Haemodynamics Study of Tapered Stents Intervention to Tapered Arteries
Autor: | Xiang Shen, Kaikai Lu, Hongfei Zhu, Deng Yongquan, Jiabao Jiang |
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Rok vydání: | 2019 |
Předmět: |
medicine.medical_treatment
Finite Element Analysis 0206 medical engineering Biomedical Engineering Hemodynamics 02 engineering and technology Coronary stenosis 030204 cardiovascular system & hematology Prosthesis Design Coronary Restenosis 03 medical and health sciences Percutaneous Coronary Intervention 0302 clinical medicine Restenosis Risk Factors Coronary Circulation medicine Humans Stent implantation Computer Simulation cardiovascular diseases business.industry Coronary Stenosis Models Cardiovascular Stent Numerical Analysis Computer-Assisted equipment and supplies medicine.disease Coronary Vessels 020601 biomedical engineering surgical procedures operative medicine.anatomical_structure Stents Stress Mechanical Cardiology and Cardiovascular Medicine business Blood Flow Velocity Biomedical engineering Artery |
Zdroj: | Cardiovascular Engineering and Technology. 10:583-589 |
ISSN: | 1869-4098 1869-408X |
DOI: | 10.1007/s13239-019-00437-y |
Popis: | In-stent restenosis (ISR) is related to local haemodynamics in the arteries after stent intervention. However, the haemodynamics of stents implanted into tapered vessels is rarely studied and remains unclear. This study aimed to study the haemodynamic performance of a stent in a tapered artery to reveal the haemodynamic differences between tapered and cylindrical stents after stent implantation and guide the stent selection for the treatment of coronary artery stenosis. Cylindrical and tapered stents were implanted into the tapered arteries. A model of a cylindrical stent implanted into a cylindrical artery was established as the contrast model. Using the finite element method, the flow velocity and wall shear stress distribution of the three models were compared. At t1, t2, t3 and t4, the flow rate of the tapered artery with tapered stents (TT) after the implantation increased by 8.59, 3.80, 12.81 and 3.66%, respectively. In addition, the wall shear stress in the tapered arteries of TT was 23.48, 36.67, 13.00 and 8.06% higher than that of the tapered arteries with cylindrical stents (TC). The implantation of a tapered stent in the tapered artery can effectively improve intravascular haemodynamics. The tapered stent allows the tapered artery to obtain better haemodynamics and reduces the probability of ISR. |
Databáze: | OpenAIRE |
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