Research on a New RCM Positioning Mechanism of Minimally Invasive Surgery Robot

Abstract

The surgical robots with remote motion center （RCM） play an important role in the field of minimally invasive surgery （MIS）. Considering the advantages and disadvantages of double parallelogram and double synchronous belt RCM mechanism， a new RCM mechanism based on single synchronous belt， single parallelogram is proposed. Based on Adams and SimMechanics， the accuracy and workspace of the fixed point at the end of the new RCM mechanism are analyzed. The simulation results show that the new RCM mechanism has higher fixed point accuracy， simple and compact mechanism and good stability on the basis of meeting the motion space required by the operation.

Keywords

• RCM mechanism;Adams kinematics analysis;SimMechanics;Motion workspace