[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):918-922.[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):918-922.[doi:10.3969/j.issn.1001-0505.2009.05.010]
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基于有限元仿真的食管支架疲劳寿命计算()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第5期
页码:
918-922
栏目:
生物医学工程
出版日期:
2009-09-20

文章信息/Info

Title:
Analysis on fatigue life of esophagus stent based on finite element
作者:
倪晓宇1 倪中华2 潘长网3
1 南京林业大学机械电子工程学院, 南京 210037; 2 东南大学机械工程学院, 南京 211189; 3 南京微创医学科技有限公司, 南京 210069
Author(s):
Ni Xiaoyu1 Ni Zhonghua2 Pan Changwang3
1 School of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037,China
2 School of Mechanical Engineering, Southeast University, Nanjing 211189, China
3 Micro-tech(Nanjing)Co. Ltd, Nan
关键词:
食管支架 疲劳寿命 有限元 镍钛合金 体外实验
Keywords:
esophagus stent fatigue life finite element Ni-Ti alloy in vitro test
分类号:
R318.01;R318.11
DOI:
10.3969/j.issn.1001-0505.2009.05.010
摘要:
介绍了食管支架的应用背景及其研究现状,用有限元数值模拟方法计算了食管支架的疲劳寿命.根据实际情况,提出合理的假设与简化条件,完成了几何模型及有限元模型的创建、材料模型的选取及边界条件的正确设置.通过对不同头数、不同丝径的裸架和覆膜支架的疲劳寿命的计算,得出支架丝径越大、头数越多,支架径向刚度和强度就越大,疲劳寿命也越大的结论.建立了食管支架体外加速疲劳试验装置,对不同头数、相同丝径的覆膜支架进行疲劳寿命的试验.试验结果与数值模拟结果一致,证明了数值模拟方法的合理性及有效性.数值模拟与试验相结合能为食管支架的优化设计提供有价值的参考.
Abstract:
The application background and research overview of esophagus stent are introduced. The fatigue life of esophagus stent is calculated by using fininte element method. According to actual situation, after proposing reasonable hypothesis and simplification, the geometry model and finite element model establishment, material models selection and boundary conditions setting are completed. The fatigue lifes of nude stents and covered stents with different head number and different thread diameter are computed. The results show that fatigue life of stent is relative to radial intensity and stiffness of stent. The stronger the stent’s radial stiffness and intensity, the longer the stent’s fatigue life. At the same time, the in vitro accelerative fatigue experiment device was established to test the fatigue life of covered stents with different head number. The experiment results show the consistnecy between experiment results and simulation results. Thus the rationality and validity of the simulation method are verified. The combination of experiment and numerical simulation can provide valuable reference for the optimization design of esophagus stent.

参考文献/References:

[1] 韩新巍,吴刚,李永东,等.食管-纵隔瘘:食管覆膜支架与经鼻经食管引流管置入治疗[J].介入放射学杂志,2005,14(2):167-170.
  Han Xinwei,Wu Gang,Li Yongdong,et al.Treating mediastinoesophageal fistula with covered stent through nasal esophagus drainage tube[J].Journal of Interventional Radiology,2005,14(2):167-170.(in Chinese)
[2] 高雪梅,韩新巍,吴刚,等.食管癌性重度并狭窄食管-气道瘘的内支架置入治疗[J].介入放射学杂志,2005,14(2):153-155.
  Gao Xuemei,Han Xinwei,Wu Gang,et al.Treating the severe esophageal malignant stenosis with esophagobronchial fistula by stent placement[J].Journal of Interventional Radiology,2005,14(2):153-155.(in Chinese)
[3] 冯靖,季强,梅运清,等.国产自膨式镍钛记忆合金带膜食管支架的临床应用[J].中国癌症杂志,2006,16(4):377.
  Feng Jing,Ji Qiang,Mei Yunqing,et al.The experience of domestic self-expanding nickel titanium memorial alloying covered stent in the treatment of esophageal structures[J].China Oncology,2006,16(4):377.(in Chinese)
[4] 许庆生,董宗俊,支修益,等.带膜网状镍钛合金支架治疗恶性病变引起的食管狭窄[J].中国胸心血管外科临床杂志,2007,14(1):60-61.
  Xu Qingsheng,Dong Zongjun,Zhi Xiuyi,et al.Clinical application of membrane-covered knitted self-expanding nitinol stent in treatment of malignant esophageal strictures[J]. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery,2007,14(1):60-61.(in Chinese)
[5] ASTM.ASTM F2477—06 standard test methods for in vitro pulsatile durability testing of vascular stents [EB/OL].(2005-05-28)[2008-05-25].http://www.astm.org/DATABASE.CART/HISTORICAL/F2477-06.htm.
[6] 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 braided 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)
[7] Takashima K,Kitou T,Mori K,et al.Simulation and experimental observation of contact conditions between stents and artery models[J]. Medical Engineering and Physics,2007,29(3):326-335.
[8] Chua David S N,MacDonald B J,Hashmi M S J.Finite-element simulation of stent expansion [J].Journal of Materials Processing Technology, 2002,120(1/2/3):335-340.
[9] Chua David S N,MacDonald B J,Hashmi M S J.Finite element simulation of stent and balloon interaction[J].Journal of Materials Processing Technology,2003,143-144(1):591-597.
[10] 郭荣斌,彭丽华,程留芳,等.老年胃食管反流病患者食管运动功能改变[J].世界华人消化杂志,2004,12(1):125-128.
  Guo Rongbin,Peng Lihua,Cheng Liufang,et al.Alteration of esophageal motility in elderly patients with gastric esophageal reflux disease[J].World Chinese Journal of Digestology,2004,12(1):125-128.(in Chinese)
[11] 郑玉峰,赵连城.生物医用镍钛合金[M].北京:科学出版社,2004.
[12] Malagelada J R.动态食管测压[M/OL].赵景涛,译.(2005-05-28)[2008-07-28].http://www.2137c.net/yxsj/4/14/index.html.
[13] 王其彰.食管外科[M].北京:人民卫生出版社,2005.

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备注/Memo

备注/Memo:
作者简介: 倪晓宇(1975—),女,博士,讲师; 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(50675033)、江苏省自然科学基金资助项目(BK3006709)、南京林业大学高学历人才基金资助项目(163040015).
引文格式: 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. [doi:10.3969/j.issn.1001-0505.2009.05.010]
更新日期/Last Update: 2009-09-20