[1]王果,倪中华,倪晓宇,等.食管支架径向支撑性能[J].东南大学学报(自然科学版),2011,41(5):987-991.[doi:10.3969/j.issn.1001-0505.2011.05.018]
 Wang Guo,Ni Zhonghua,Ni Xiaoyu,et al.Radial support properties of esophagus stent[J].Journal of Southeast University (Natural Science Edition),2011,41(5):987-991.[doi:10.3969/j.issn.1001-0505.2011.05.018]
点击复制

食管支架径向支撑性能()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第5期
页码:
987-991
栏目:
生物医学工程
出版日期:
2011-09-20

文章信息/Info

Title:
Radial support properties of esophagus stent
作者:
王果1倪中华12倪晓宇3龙志红1顾兴中12
(1东南大学江苏省微纳生物医疗器械设计与制造重点实验室,南京 211189)
(2苏州市微纳生物医疗器械设计与制造重点实验室,苏州215123)
(3南京林业大学机械电子工程学院,南京 210037)
Author(s):
Wang Guo1Ni Zhonghua12Ni Xiaoyu3Long Zhihong1Gu Xingzhong12
(1Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189,China)
(2Suzhou Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Suzhou 215123,China)
(3School of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China)
关键词:
食管支架径向支撑力有限元编织型
Keywords:
esophagus stent radial force finite element braid
分类号:
R318.01;R318.11
DOI:
10.3969/j.issn.1001-0505.2011.05.018
摘要:
针对目前编织型食道支架支撑性研究存在的问题,完成了支架几何模型及有限元模型的创建、材料模型的选取以及边界条件的设置,提出了基于有限元分析的食管支架径向支撑力计算方法,并对不同头数、不同丝径、不同导程支架的径向支撑力进行分析.分析结果显示:头数越多,径向支撑力越大; 丝径越大,径向支撑力越大; 导程越大,径向支撑力越小.支撑力体外测试结果与有限元分析结果一致,证明数值模拟方法是合理有效的.最后,得出了优良支撑性能支架的参数选择范围:头数为22或24,丝径0.18~0.22 mm,导程60~70 mm.数值模拟方法与实验相结合能为食管支架的临床选择提供重要的参考价值.
Abstract:
In view of the problems of the current research on the braid stent, the geometry model and finite element model establishment, material model selection and boundary condition setting are completed. The method to calculate the radial force of the esophagus stent is presented. The radial force of the stent with different wire numbers, different wire diameters and different leads are computed. The analysis results show that the more the wire number of the stent, the longer the radial force; the larger the wire diameter, the higher the radial force of the stent; the higher the lead, the lower the radial force of the stent. The experimental results are consistent with the finite element analysis (FEA) results. Thus, the rationality and validity of the simulation method are verified. Finally, the parameter ranges for excellent radial force of esophagus stent are obtained. The wire number should be 22 or 24, the wire diameter should be 0. 18 to 0. 22 mm, and the lead should be 60 to 70 mm. The combination of experiment and numerical simulation can provide a valuable reference for the clinical choose of esophagus stent.

参考文献/References:

[1] Moon T,Hong D,Chun H J,et al.Analytical models for predicting mechanical properties of mesh-type self-expandable metal stents with cover membrane [J].Current Applied Physics,2009,9(1):92-100.
[2] Stoeckel D,Bonsignore C,Duda S.A survey of stent designs[J].Min Invas Ther &Allied Technol,2002,11(4):137-147.
[3] 丁宗励,施瑞华.生物可降解消化道内支架的研究进展[J].国际消化病杂志,2010,30(3):168-171.
  Ding Zongli,Shi Ruihua.Research progress of biodegradable stents within the digestive tract[J].Int J Dig Dis,2010,30(3):168-171.(in Chinese)
[4] 裴庆山,刘吉勇.食管支架研究进展[J].世界华人消化杂志,2008,16(30):3410-3415.
  Pei Qingshan,Liu Jiyong.Advances in research of esophageal stents[J].World Chinese Journal of Digestology,2008,16(30):3410-3415.(in Chinese)
[5] Repici A,Rando G.Expandable stents for malignant dysphagia[J].Techniques in Gastrointestinal Endoscopy,2008,10(4):175-183.
[6] 周承倜,董何彦.微型网状结构支架的力学性能研究[J].应用力学学报,2004,21(3):1-8.
  Zhou Chengti,Dong Heyan.Research on mechanical property for coronary stents with micro net structure[J].Chinese Journal of Applied Mechanics,2004,21(3):1-8.(in Chinese)
[7] 黄跃平,范志宁,李荣华,等.医用内支架力学性能的评价和检验方法的研究[J].中国医疗器械信息,2008,14(10):50-54.
  Huang Yueping,Fan Zhining,Li Ronghua,et al.Study for medical endoprosthesis mechanics efficiency and test method[J].China Medical Device Information,2008,14(10):50-54.(in Chinese)
[8] Kajzer W,Kaczmarek M,Marciniak J.Biomechanical analysis of stent-oesophagus system[J].Journal of Materials Processing Technology,2005,162-163:196-202.
[9] 倪晓宇,倪中华,潘长网.基于有限元仿真的食管支架疲劳寿命计算[J].东南大学学报:自然科学版,2009,39(5):918-922.
  Ni Xiaoyu,Ni Zhonghua,Pan Changwang.Analysis on fatigue life of esophagus stent based on finite element[J].Journal of Southeast University:Natural Science Edition,2009,39(5):918-922.(in Chinese)
[10] 倪晓宇,潘长网,王云霞,等.食管支架变形数值模拟与疲劳寿命的分析研究[J].中国机械工程,2009,20(23):2856-2860.
  Ni Xiaoyu,Pan Changwang,Wang Yunxia,et al.Research on numerical simulation and structural fatigue life for esophagus stent[J].China Mechanical Engineering,2009,20(23):2856-2860.(in Chinese)
[11] 张祖仁,顾旭东,王一山,等.网格状钛镍记忆合金食管支架编织结构的分析[J].中国医药器械杂志,2004,28(6):421-423.
  Zhang Zuren,Gu Xudong,Wang Yishan,et al.An analysis on the braid arrangements of woven-type esophageal stents made of Ti-Ni shape memory alloy[J].Chinese Journal of Medical Instrumentation,2004,28(6):421-423.(in Chinese)
[12] 郑玉峰,赵连城.生物医用镍钛合金[M].北京:科学出版社,2004.

相似文献/References:

[1]倪晓宇,倪中华,潘长网.基于有限元仿真的食管支架疲劳寿命计算[J].东南大学学报(自然科学版),2009,39(5):918.[doi:10.3969/j.issn.1001-0505.2009.05.010]
 Ni Xiaoyu,Ni Zhonghua,Pan Changwang.Analysis on fatigue life of esophagus stent based on finite element[J].Journal of Southeast University (Natural Science Edition),2009,39(5):918.[doi:10.3969/j.issn.1001-0505.2009.05.010]

备注/Memo

备注/Memo:
作者简介:王果(1987—),男,硕士生;倪中华(联系人),男,博士,教授,博士生导师,nzh2003@seu.edu.cn.
基金项目:国家自然科学基金资助项目(50805022,51005124)、江苏省科技支撑计划资助项目(BE2009054)、国家教育部博士点基金资助项目(20090092120007).
引文格式: 王果,倪中华,倪晓宇,等.食管支架径向支撑性能[J].东南大学学报:自然科学版,2011,41(5):987-991.[doi:10.3969/j.issn.1001-0505.2011.05.018]
更新日期/Last Update: 2011-09-20