一种新型生物植入材料磨损测试装置

摩擦磨损是造成人工关节等生物医用材料在体内失效的主要因素. 借助生物材料磨损试验机, 对生物植入材料进行体外实验, 以考察材料的强度、摩擦磨损等性能. 这对于生物材料在人体中的应用研究十分重要. 介绍一种新型的销盘型(pin on disc, POD) 生物植入材料磨损测试装置(Biotribo-POD). 该试验机可以对生物材料进行生物摩擦学试验, 主要用于模拟和预测临床中人工关节等生物材料的磨损特性, 其中对髋关节、膝关节和肩关节植入材料的预测是研究的重点. 该试验机有6 个工位, 可以同时对6 个销进行试验. 装置分为4 个模块:加载模块、销导向模块、框架模块和运动模块. 该试验机的主要特点是可以通过电脑程序的控制实现多种轨迹, 而且可通过调节所受载荷研究运动情况对材料磨损造成的影响.

A New Biological Implant Meterial Wear Test Machine

Wear is a major problem affecting long-term performance of orthopaedic implants. It is important to study strength and wear of the implants by evaluating orthopaedic biomaterials in vitro to achieve successful clinical applications in human bodies. This paper introduces a new type of biological implant material pin on disc (POD) wear testing device (Biotribo-POD) that can test biotribology of biological materials. A testing machine is used to simulate and predict clinical biological materials such as artificial joints wear characteristics including hip, knee and shoulder. The study focuses on implant materials. A
6-station Biotribo-POD, which can experiment with 6 pins simultaneously. It includes a pin guiding module, a motion module, a framework module and a loading module, providing multidirectional slide track shapes and variable load with a computer program. Thus influences with different motion paths can be studied.