无线螺旋内窥镜运行的肠道模型研究  

Study on the Model of Intestine under Wireless Spiral Endoscope

作　　者：王群京[1,2] 鞠鲁峰[1] 李国丽[1] 胡存刚[1] 张兴[1] 韩卫星[3] 

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009 [2]安徽大学,安徽合肥230039 [3]安徽医科大学,安徽合肥230032

出　　处：《工程图学学报》2009年第3期136-140,共5页Journal of Engineering Graphics

基　　金：安徽省自然科学基金资助项目(050440101);合肥工业大学科学研究发展基金资助项目(050403F)

摘　　要：无线内窥镜能够在人体胃肠道内运行,根据动压效应原理,它会在其周围自动形成动压润滑粘液膜,使内窥镜在运行时不与内腔壁发生接触,避免对人体有机组织的损伤。根据人体消化道黏液为具有剪切稀化性的非牛顿流体的实验结论,利用非牛顿流体的Reynolds方程和有限元仿真软件,得到无线螺旋内窥镜在运行时的小肠的等效应力场分布图,说明了无线螺旋内窥镜在肠道内运行的可行性。The wireless endoscope can move in the intestine, can prevent the direct contact to intestine tube, and can avoid injury to organic tissues with the hydrodynamic mucus film formed by hydrodynamic effect. From experimentation, the gastrointestinal mucus is a kind of non-Newtonian fluid and its apparent viscosity rapidly decreases with the increase of shear rate. Using the software of finite element analysis, the graph of the VonMises of intestine is obtained during the endoscope moving based on the non-Newtonian Reynolds equation, which proves the feasibility of the wireless spiral endoscope moving in the intestine.

关 键 词：计算机应用 肠道建模 有限元 非牛顿Reynolds方程 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]