摘要
为了解决放射式冲击波在人体软组织中的传播特性难以量化分析的问题,应用有限元法建立了包含皮肤、脂肪,肌肉和骨骼的数值计算模型,并根据放射式冲击波治疗仪的基本原理对其进行仿真分析。结果表明:放射式冲击波在软组织中产生的最大压强在10 MPa以内,波长为18 mm,传播速度为1500 m/s,由于皮肤、脂肪和肌肉组织的阻抗效应,其压强和能流密度随传播深度的增加而逐渐降低,在治疗探头与皮肤的接触界面涂抹耦合剂并提高驱动气压,将有助于治疗更深层次的软组织损伤。相关信息将为治疗方案的优化和新型治疗仪的研发提供重要参考。
It is difficult to quantitatively analyze the propagation characteristics of the radial shock wave in human soft tissues.To solve this problem,a numerical calculation model including skin,fat,muscle and bone was established using the finite element method,and the simulation analysis was carried out according to the basic principle of radial shock wave therapeutic apparatus.The results show that the maximum pressure of radial shock wave produced in soft tissues is within 10 MPa,with a wavelength of 18 mm and a propagation velocity of 1500 m/s.The pressure and energy flux density decrease gradually with the increase in propagation depth due to the impedance effect of skin,fat and muscle.The treatment of deeper soft-tissue injury is benefited by applying coupling on the interface between the therapeutic probe and skin and increasing driving pressure.The relevant information provides an important reference for the optimization of the therapeutic regime and the development of novel therapeutic apparatus.
作者
赵彻
刘慧力
王照智
冯春
ZHAO Che;LIU Hui-li;WANG Zhao-zhi;FENG Chun(School of Aviation and Mechanical Engineering,Changzhou Institute of Technology,Changzhou 213032,China;Key Laboratory of Bionic Engineering,Ministry of Education,Jilin University,Changchun 130025,China;School of and Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China)
出处
《科学技术与工程》
北大核心
2021年第20期8376-8382,共7页
Science Technology and Engineering
基金
国家自然科学基金(51905353)。
关键词
冲击波
软组织
有限元
能流密度
阻抗效应
shock wave
soft tissue
finite element
energy flux density
impedance effect
