Design of a Positioning Manipulator for Minimally Invasive Vascular Interventional Surgery Robot System

In order to realize the flexibility and positioning reliability of the positioning manipulator of the minimally invasive vascular interventional surgery robot system, and to avoid the problem of fixed programming of the active positioning manipulator, a new passive positioning manipulator was designed. First, based on the requirements of the system and the self-balancing conditions of the passive positioning manipulator, a configuration of the manipulator is proposed, and the degree of freedom and working space are verified to meet the requirements of the working conditions. Then, according to the characteristics of simultaneously locking and release of the joints when the manipulator works, a locking scheme of multi-joint is proposed, and the design of the mechanical structure is carried out in detail. Finally, the positioning manipulator can achieve the function of being dragged under artificial operation and locating whenever and wherever necessary.