内外括约肌主动力作用下尿道压力的研究  

Pressure of Muscle Force Activation of Internal and External Sphincters on Urethra

作　　者：张建国[1,2] 黎朋 王芳 翟丽东[3] 周劲松 曹子君[1,2] ZHANG Jianguo;LI Peng;WANG Fang;ZHAI Lidong;ZHOU Jingsong;CAO Zijun(College of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin 300222,China;The Key Laboratory of Integrated Design and On-Line Monitoring of Light Industrial and Food Engineering Machinery and Equipment in Tianjin,Tianjin 300222,China;School of Basic Medicine,Medical University of Tianjin,Tianjin 300070,China)

机构地区：[1]天津科技大学机械工程学院,天津300222 [2]天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津300222 [3]天津医科大学基础医学院,天津300070

出　　处：《天津科技大学学报》2020年第1期72-75,共4页Journal of Tianjin University of Science & Technology

摘　　要：男性下尿路的控尿功能由内外括约肌实现,为了研究内外括约肌主动力作用下尿道压力分布,建立一种包含肌肉主动力的下尿路生物力学仿真模型.下尿路几何模型由中年男性人体火棉胶切片图像重建;肌肉模型由被动非线性黏弹性实体单元和Hill主动单元共节点耦合.对内外括约肌模型在主动力作用下进行主动收缩的生物力学仿真计算.结果表明:仿真得到最大尿道压力在临床测量的值域内,该模型可以用在下尿路流固耦合分析中,为研究尿失禁成因提供理论依据.The urinary control function of the male lower urinary tract is realized by the internal and external sphincters.In order to study the pressure distribution of the lower urinary tract under the action of the internal and external sphincters,a biomechanical simulation model of the lower urinary tract including the active muscle force was established.The geometric model of the lower urinary tract was reconstructed with the section images of colloidal tissue of middle-aged men.The muscle model was coupled with passive nonlinear viscoelastic solid element and Hill active element.The internal and external sphincter models were simulated under the active muscle contraction.The results show that the maximum urethral pressure obtained in simulation is within the range of clinical measurement.This model can be used in the fluid-solid coupling analysis of the lower urinary tract and thus provide some theoretical basis for the study of the causes of urinary incontinence.

关 键 词：下尿路 括约肌 肌肉主动力 非线性黏弹性 尿道压力 

分 类 号：R695[医药卫生—泌尿科学] R318[医药卫生—外科学]