中文摘要：

随着虚拟血管介入手术训练系统研究的逐渐深入,介入手术过程的力学特性分析成为众多科研工作者的研究热点。为了提高虚拟手术中导丝介入过程的精确性,设计了血管软组织轴向拉伸实验,以实验数据为基础,计算其生物力学参数并进行有限元仿真。将血管软组织视为线弹性模型,模型参数主要取决于杨氏模量和泊松比。通过对仿真数据和实验结果进行对比可知,基于有限元的软组织拉伸仿真数据和真实结果基本一致,验证了有限元法对软组织建模的准确性与可行性。

英文摘要：

Nowadays,accompanied with the increasing study on training system for the interventional surgery of virtual vascular,mechanical performance analysis in the procedure of interventional surgery system has gradually become a research hotspot of numerous scientific research workers. In order to improving the precision of the wire guide interventional process during virtual surgery,we not only designed a uniaxial tensile test of the longitudinal specimens of the vessels,but also calculated its biomechanical parameters based on the experiment results and made a simulation on the base of the finite element method. Soft tissue structure such as blood vessels was considered as a linear elastic model,and its model parameters were mainly depended on Young＇s modulus and Poisson＇s ratio. Through the comparisons between simulation data and experiment results,soft tissue＇s longitudinal simulation data were consistent with real results. As a conclusion,precision and feasibility of FEM is valid for the soft tissue modelling.