人工关节力学性能测试硬件系统

Hardware System for the Test of Artificial Joint Biomechanics

在人工关节生物力学性能研究中,通过离体实验对内植入固定物的生物力学性能进行评价是国际上通用的方法,国内这方面的研究起步较晚,相应的测试手段缺乏,还没有形成统一的标准。该文围绕已有的力学试验机设计并搭建了完整的硬件测试系统,包括:双目视觉捕捉仪、力矩承载夹具、薄膜压力传感器等。该系统能准确地测量出各个关节相对运动角度值、外部力矩值、关节间压力值,具有较高的可靠性和稳定性,对于人工关节力学评估系统的成形和标准化具有一定的借鉴意义。

In the research of artificial joint biomechanics,it is a common method in the world to evaluate the biomechanical properties of the implanted fixtures through experiments in vitro.The domestic research started late,and the corresponding testing methods were lacking.There is still no unified standard.In this paper,a complete hardware test system was designed and built around the existing mechanical testing machine,including:binocular vision catcher,torque bearing clamp,film pressure sensor and so on.The system can accurately measure the relative motion angle value,external torque value,and inter pressure value of each joint.It has some reference significance for the forming and standardization of the artificial joints’evaluation system.