动物胸廓变形的电测实验研究

Research on electrical measurement experiment of deformation of animal thorax model

数值模拟的方法已经被用于漏斗胸及漏斗胸合并脊柱侧弯微创矫形过程的研究,但是目前尚缺少实验验证.受伦理限制,目前还无法进行在体模型和离体模型的电测实验,虽然可以用高分子材料制作人工胸廓模型进行电测实验,但是在模型材料的筛选,模型的制备和胸廓模型装配方面还面临许多困难.本文采用新鲜的羊胸廓模型进行电测实验,通过对羊胸廓的胸骨中下段沿矢状面施加40 mm的位移,获得了动物胸廓模型在生理载荷作用下肋骨及肋软骨的应变分布规律.文中结果为了解胸廓在生理载荷作用下的变形特点提供了实验数据,也为验证数值模拟结果提供了重要的实验数据.

The method of numerical simulation has been used in the research setting for purposes related to the correction process of the pectus excavatum with scoliosis, but there is still a lack of experimental verification. It is impossible to perform electrical measurement experiment in human body because of ethical considerations. Another way is to perform electrical measurement experiment on artificial thorax model, but there are many difficulties in the selection of model materials, the preparation of the model and the assembly of the materials. In this paper, the electrical measurement experiment on fresh sheep thorax model have been carried out, The law of strain distribution of the ribs and costal cartilage under physiological loads have been obtained by applying displacement load of 40 mm along sagittal plane. The results provide experimental data for understanding the deformation characteristics of the thorax under physiological load, and provide the important experimental data for validating the numerical simulation results.