中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (26): 4852-4856.doi: 10.3969/j.issn.1673-8225.2012.26.020

• 骨与关节循证医学 evidence-based medicine of the bone and joint • 上一篇    下一篇

有限元法仿真计算多种工况下的肛提肌应力

宋红芳1，黄 跃1，倪成香2，雷玲玲2，王雪影2，刘志成1，马 乐2   

  1. 1首都医科大学生物医学工程学院，北京市 100069；
    2首都医科大学附属北京妇产医院，北京市 100006
  • 收稿日期:2011-11-16 修回日期:2011-12-20 出版日期:2012-06-24 发布日期:2013-11-02
  • 通讯作者: 马乐，主任医师，硕士生导师，首都医科大学附属北京妇产医院盆底外科，北京市 100006 malef@163bj. com 刘志成，教授，博导，首都医科大学生物医学工程学院，北京市 100069 zcliu@ccmu.edu.cn
  • 作者简介:宋红芳☆，女，1975 年生，山西省长治市人，汉族，首都医科大学生物医学工程学院在读博士，副教授，主要从事生物力学方面的研究。 songhf@ccmu.edu.cn
  • 基金资助:

    北京市自然科学基金项目(3082010)，课题名称：基于MRI的妇女盆底组织力学分析的计算机仿真研究

A finite element method for the simulation of levator ani muscle stress under different conditions

Song Hong-fang1, Huang Yue1, Ni Cheng-xiang2, Lei Ling-ling2, Wang Xue-ying2, Liu Zhi-cheng1, Ma Le2   

  1. 1School of Biomedical Engineering, Capital Medical University, Beijing 100069, China;
    2Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
  • Received:2011-11-16 Revised:2011-12-20 Online:2012-06-24 Published:2013-11-02
  • Contact: Liu Zhi-cheng, Professor, Doctoral supervisor, School of Biomedical Engineering, Capital Medical University, Beijing 100069, China zcliu@ccmu.edu.cn Ma Le, Chief physician, Master’s supervisor, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China malef@163bj.com
  • About author:Song Hong-fang☆, Studying for doctorate, Associate professor, School of Biomedical Engineering, Capital Medical University, Beijing 100069, China songhf@ccmu.edu.cn

PDF

453

被引次数

23

摘要：

背景：构建盆底软组织的有限元模型对其进行有限元分析从而阐述其生物力学发生机制，在盆底肌肉及骨盆的生物力学方面有着独特的优势。
目的：建立肛提肌有限元模型，分析多种工况下肛提肌的应力分布，为从力学角度认识女性盆底功能障碍性疾病提供参考。
方法：基于MRI影像资料用MIMICS三维重建软件重构肛提肌几何结构，用有限元分析方法仿真计算肛提肌的应力分布。
结果与结论：各工况下肛提肌中最大应力出现位置接近，休息状态肛提肌主动收缩压力为零时最小，剧烈张力且肛提肌主动收缩压力最大时肛提肌内的最大应力也最高。说明不同状态下肛提肌的高腹压会对肛提肌产生较大的应力，容易造成肛提肌的组织损伤。

关键词: 盆底, 有限元, 肛提肌, 盆底功能障碍性疾病, 生物力学

Abstract:

BACKGROUND: There are unique advantages to understand muscles and skeletons of the pelvic floor by building the finite element model to analyze its biomechanical mechanism.
OBJECTIVE: To build the finite element model of the m. levator ani and to analyze its stress distribution in a number of conditions to provide reference for further understanding pelvic floor dysfunction in terms of mechanics.
METHODS: The geometry structure of the m. levator ani was reconstructed based on magnetic resonance imaging of the pelvic floor using the medical imaging software MIMICS and the stress distribution of the m. levator ani was simulated using the finite element method.
RESULTS AND CONCLUSION: The maximum stress position was the same in any condition. When the active contraction pressure of the m. levator ani was zero its maximum stress was lowest in rest condition, but when the active contraction pressure of the m. levator ani was highest its maximum stress was also highest in severe tension condition. High abdominal pressure will produce high stress in the m. levator ani for the seven conditions and is easy to damage the m. levator ani.

中图分类号: