医用微型机器人螺纹参数的研究

Study on the Screw Parameters of Medical Micro-robots

研究了一种利用螺旋旋转时产生牵引力的医用微型机器人的驱动机构。详细分析计算了医用微型机器人在采用不同形状螺纹下螺旋时所产生的轴向摩擦牵引力和动压粘液膜承载量。通过对比不同形状螺纹下医用微型机器人运动特性参数的优劣,得出了医用微型机器人最为合适的螺纹参数。

An impeller of a medical micro-robot utilizing the thrust force generated by the rotation of screws is studied. The axial thrust force and the load capacity of hydrodynamic pressure are analyzed and calculated in detail when screws of different shapes are adopted in the micro-robot. Through comparing the locomotion parameters of the micro-robot with screws of different shapes, more reasonable screw parame- ters adopted in the micro-robot are concluded.