Redundant axis and degree of freedom for hardware-constrained remote center robotic manipulator

摘要

A manipulator for articulating a surgical tool during surgery includes an instrument holder, a parallelogram linkage assembly, an offset extension link, a yaw joint, and a mounting base. The instrument holder is configured to couple with the surgical tool. The parallelogram linkage assembly produces motion of the instrument holder that is limited to rotation about a pitch axis that intersects a remote center of manipulation. The offset extension link has an offset extension link distal end and an offset extension link proximal end. The yaw joint is connected to the offset extension link proximal end and produces motion of the instrument holder that is limited to rotation about a yaw axis that intersects the remote center of manipulation. The offset extension link distal end is offset from the yaw axis. The mounting base is coupled with the yaw joint.