| 被动式胶囊内窥镜在小肠内运动的力学分析 |
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| 引用本文： | 张炜,李洁,陈英俊,黄平.被动式胶囊内窥镜在小肠内运动的力学分析[J].工程设计学报,2006,13(5):350-354. |
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| 作者姓名： | 张炜 李洁 陈英俊 黄平 |
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| 作者单位： | 华南理工大学,机械工程学院,广东,广州,510640;华南理工大学,机械工程学院,广东,广州,510640;华南理工大学,机械工程学院,广东,广州,510640;华南理工大学,机械工程学院,广东,广州,510640 |
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| 基金项目： | 广东省广州市科技攻关项目 |
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| 摘 要： | 将蠕动过程中的小肠简化为不可压缩弹性薄膜，结合旋转壳体的薄膜应力平衡方程，研究小肠蠕动推进被动式胶囊内窥镜的力学行为。对推导公式进行了数值分析，分析表明：在小肠蠕动过程中，小肠对于胶囊内窥镜的推力与其直径的平方成正比；综合考虑患者感受、检查成功性，胶囊内窥镜的直径应该设计为7～15 mm；在假设胶囊行进速度为常数时，粘滞阻力和其直径与长度乘积呈线性关系，但数值较小。
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| 关 键 词： | 胶囊内窥镜 小肠 力学分析 |
| 文章编号： | 1006-754X(2006)05-0350-05 |
| 收稿时间： | 2006-10-28 |
| 修稿时间： | 2006年2月13日 |
Mechanical analysis of passive capsule endoscope creeping through small intestine |
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| ZHANG Wei,LI Jie,CHEN Ying-jun,HUANG Ping.Mechanical analysis of passive capsule endoscope creeping through small intestine[J].Journal of Engineering Design,2006,13(5):350-354. |
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| Authors: | ZHANG Wei LI Jie CHEN Ying-jun HUANG Ping |
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| Affiliation: | College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Research on mechanical behavior of creeping capsule endoscope during intestine peristalsis is carried out through simplifying peristaltic intestine into incompressible elastic membrane,combining with membrane stress equations of revolving shell.Then numerical analysis is conducted.The analysis indicates that push force of peristaltic intestine to capsule endoscope is proportional to square of capsule endoscope's diameter;furthermore,in consideration of patients' feeling and possibility of succeeding inspection,diameter of capsule endoscope should be 7-15 mm;viscous resistance is also found to have linear relationship to the endoscope's diameter and length when assuming capsule's creeping velocity constant,although the ratio is very small. |
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| Keywords: | capsule endoscope small intestine mechanical analysis |
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