Mechanical property analysis and design parameter optimization of a novel nitinol nasal stent based on numerical simulation.
Mechanical property analysis and design parameter optimization of a novel nitinol nasal stent based on numerical simulation.
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DOI：
10.3389/fbioe.2022.1064605
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发表时间：
2022
影响因子：
5.7
通讯作者：
Fan Y
中科院分区：
文献类型：
--
作者：
Yu H;Zheng L;Qiu J;Wang J;Xu Y;Fan B;Li R;Liu J;Wang C;Fan Y
背景资料：一种新型编织鼻支架是鼻中隔成形术后鼻腔填塞的有效替代方法，可用于鼻中隔成形术后的粘膜瓣管理和鼻腔扩张。本研究旨在研究设计参数对鼻支架力学性能的影响，以获得最佳性能。 方法：提出了一种编织型鼻支架的建模方法，建立了27个不同几何参数的支架模型。使用有限元法（FEM）对这些支架模型的压缩行为和弯曲行为进行了数值分析。采用正交试验作为优化方法，基于极差分析和权重分级法，得到性能改善的支架优化设计变量。 结果如下：编织支架的反作用力和弯曲刚度随丝直径、编织密度和支架外径的增加而增加，其中丝直径是最重要的决定性参数。支架外径对支架伸长变形的影响最大。可视化了设计参数对弯曲支架模型von-Mises应力分布的影响。几何参数为25 mm外径、30°编织角和0.13 mm丝径（A3 B3 C3）的支架模型具有更大的反作用力，但弯曲刚度显著较小，这是参数的最佳组合。 结论：首先，在编织支架模型的三个设计参数中，导丝直径是决定反作用力和弯曲刚度的最重要参数。其次，支架外径显著影响压缩模拟过程中的伸长变形。最后，根据正交试验结果，选择外径25 mm、编织角度30°、丝径0.13 mm（A3 B3 C3）为最佳支架参数组合。
Background: A novel braided nasal stent is an effective alternative to nasal packing after septoplasty that can be used to manage the mucosal flap after septoplasty and expand the nasal cavity. This study aimed to investigate the influence of design parameters on the mechanical properties of the nasal stent for optimal performance. Methods: A braided nasal stent modeling method was proposed and 27 stent models with a range of different geometric parameters were built. The compression behavior and bending behavior of these stent models were numerically analyzed using a finite element method (FEM). The orthogonal test was used as an optimization method, and the optimized design variables of the stent with improved performance were obtained based on range analysis and weight grade method. Results: The reaction force and bending stiffness of the braided stent increased with the wire diameter, braiding density, and external stent diameter, while wire diameter resulted as the most important determining parameter. The external stent diameter had the greatest influence on the elongation deformation. The influence of design parameters on von-Mises stress distribution of bent stent models was visualized. The stent model with geometrical parameters of 25 mm external diameter, 30° braiding angle, and 0.13 mm wire diameter (A3B3C3) had a greater reaction force but a considerably smaller bending stiffness, which was the optimal combination of parameters. Conclusion: Firstly, among the three design parameters of braided stent models, wire diameter resulted as the most important parameter determining the reaction force and bending stiffness. Secondly, the external stent diameter significantly influenced the elongation deformation during the compression simulation. Finally, 25 mm external diameter, 30° braiding angle, and 0.13 mm wire diameter (A3B3C3) was the optimal combination of stent parameters according to the orthogonal test results.
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影响因子：
3.5
作者：
Chalouhi, N.;Tjoumakaris, S. I.;Jabbour, P. M.
通讯作者：
Jabbour, P. M.
影响因子：
2.4
作者：
Kim, Ju Hyun;Kang, Tae Jin;Yu, Woong-Ryeol
通讯作者：
Yu, Woong-Ryeol
影响因子：
0.9
作者：
Dalgic, Abdullah;Is, Abdulhalim;Kulekci, Mehmet
通讯作者：
Kulekci, Mehmet
影响因子：
3.8
作者：
Mori, K;Saito, T
通讯作者：
Saito, T
DOI：
10.1002/cnm.3125
发表时间：
2018-10-01
影响因子：
2.1
作者：
Ribeiro, Nelson S.;Folgado, Joao;Rodrigues, Helder C.
通讯作者：
Rodrigues, Helder C.