Modeling and Simulation of Urination Assist System Based on Working Medium Saturated Vapor Pressure

doi:10.16182/j.issn1004731x.joss.19-0624

Abstract

Abstract: To design and analyze the urination assist system driven by ultrasonic-vaporized steam, a simulation model of the driving capsule and three mathematical models of working medium saturated vapor pressure, bladder pressure and urine flow are established. The simulation experiment system is built to verify the model. The effects of radiation time and sound intensity on the working medium temperature and driving pressure are simulated and analyzed. The results show that the working medium temperature and driving pressure are related to the radiation time and sound intensity. Prolonging radiation time and increasing sound intensity can increase the working medium temperature and driving pressure. In addition, under the conventional ultrasound physical therapy dose, the maximum urinary flow is close to the normal human urodynamic parameters. The simulation model and mathematical model are effective and practical, and can provide the theoretical reference to the designs of animal and clinical trials systems of the urination assist system.

Key words: urination assist system, ultrasound, saturated vapor pressure, simulation model, mathematical model

CLC Number:

Li Xiao, Li Shu, Peng Weihong, Guan Ting. Modeling and Simulation of Urination Assist System Based on Working Medium Saturated Vapor Pressure[J]. Journal of System Simulation, 2021, 33(4): 927-934.

References

[1] 陈忠, 崔喆, 双卫兵, 等. 神经源性膀胱[M]. 北京: 人民卫生出版社, 2009.
Chen Zhong, Cui Zhe, Shuang Weibing, et al.Neurogenic Bladder[M]. Beijing: People's Health Press, 2009.
[2] Frenkl T L, Rackley R R.Injectable Neuromodulatory Agents: Botulinum Toxin Therapy[J]. Urol. Clin. North Am.(S0094-0143), 2005, 32(1): 89-99.
[3] Oerlemans D J, van Kerrebroeck P E. Sacral Nerve Stimulation for Neuromodulation of the Lower Urinary tract[J]. Neurourol. Urodyn.(S0733-2467), 2008, 27(1): 28-33.
[4] Gormley E A.Urologic Complications of the Neurogenic Bladder[J]. Urologic Clinics of North America (S0094-0143), 2010, 37(4): 601-607.
[5] Kohler F P, Murphy J J.A Mechanical Urethral Valve[J]. Surgery, gynecology & obstetrics (S0039-6087), 1959, 109:703-708 .
[6] Sven M O, Henry M W, Jr. Urethral Valve: 3642004[P].1972-02-15.
[7] Rahnama'i M S.Neuromodulation for Functional Bladder Disorders in Patients with Multiple Sclerosis[J]. Multiple Sclerosis Journal(S1352-4585), 2020, 26(11): 1274-1280.
[8] Robin S, Sawan M, Abdel-Gawad M, et al.Implantable Stimulation System Dedicated for Neural Selective Stimulation[J]. Medical & Biological Engineering & Computying (S0140-0118), 1998, 36(4): 490-492.
[9] Kiguchi K, Sakamoto Y, Uozumi J, et al.A Study on Implantable Urination Assist Systems -development of A Bladder Compression System[C]// 26th Annual Int. Conf. of the IEEE EMBS, San Francisco, CA USA. USA: IEEE, 2004: 2774-2776.
[10] 李笑, 黄维佳, 关婷. 体外电磁驱动的膀胱动力泵的建模与仿真[J]. 系统仿真学报, 2010, 22(12): 2963-2966, 2989.
Li Xiao, Huang Weijia, Guan Ting.Modeling and Simulation of Bladder Power Pump Driven by External Electromagnet[J]. Journal of System Simulation, 2010, 22(12): 2963-2966, 2989.
[11] 曹睿, 李笑, 关婷, 等. 膀胱动力泵电磁驱动系统的优化设计[J]. 中国机械工程, 2019, 30(4): 431-437, 447.
Cao Rui, Li Xiao, Guan Ting, et al.Optimal Design for Electromagnetic Driven Systems of Bladder Power Pumps[J]. China Mechanical Engineering, 2019, 30(4): 431-437, 447.
[12] Yang X, An C, Liu S, et al.Soft Artificial Bladder Detrusor[J]. Advanced Healthcare Material (S2192-2640), 2018, 7(6): e1701014.
[13] 李笑, 周怀洲, 石志超, 等. 超声汽化蒸汽驱动的排尿助力系统建模及仿真[J]. 系统仿真学报, 2015, 27(2): 389-395.
Li Xiao, Zhou Huaizhou, Shi Zhichao, et al.Modeling and Simulation of Urination Assist System Driven by Ultrasonic-vaporized Steam[J]. Journal of System Simulation, 2015, 27(2): 389-395.
[14] 刘志刚, 于萌萌, 王建平, 等. 估算纯物质液体表面张力方法的研究及评价[J]. 计算机与应用化学, 2017, 34(5): 383-387.
Liu Zhigang, Yu Mengmeng, Wang Jianping, et al.Research and Evaluate Methods for Estimating Pure Liquid Surface Tension of Compounds[J]. Computers and Applied Chemistry, 2017, 34(5): 383-387.
[15] 范宏昌. 热学[M]. 北京: 科学出版社, 2003: 311-317.
Fan Hongchang.Thermodynamics[M]. Beijing: Science Press, 2003: 311-317.
[16] 王秀芳, 王慧云. 物理化学[M]. 北京: 科学出版社, 2016: 135.
Wang Xiufang, Wang Huiyun.Physical Chemistry[M]. Beijing: Science Press, 2016: 135.
[17] 周永昌, 郭万学, 王志刚. 超声治疗[M]. 北京: 人民军医出版社, 2009: 21.
Zhou Yongchang, Guo Wanxue, Wang Zhigang.Ultrasound Therapy[M]. Beijing: People's Military Medical Press, 2009: 21.