Operating arm and surgical robot

A surgical robot, the surgical robot comprising an operating arm, the operating arm comprising successively connected a driving cartridge, a link, an end instrument, and a first group of driving wire and a second group of driving wire penetrating the link,

• the end instrument comprising a connecting assembly connected to the link and an end effector connected to the connecting assembly, and
• the driving cartridge comprising a base connected to the link, and a driving shaft assembly arranged on the base, the driving shaft assembly comprising a first rotatable shaft arranged on the base, and a second rotatable shaft arranged on the first rotatable shaft and coaxially rotated with the first rotatable shaft, the first group driving wire starting from the first rotatable shaft and terminating at a first position of the connecting assembly, the second group driving wire starting from the second rotatable shaft and terminating at a second position of the connecting assembly, the first position is farther away the link, the second position is nearer to the link, thereby the first group of driving wire and the second group of driving wire driving the end instrument to move in a direction corresponding to a degree of freedom during rotation of the driving shaft assembly.