Patent ID: 8398633

Claim:
A surgical instrument, comprising: a handle having an elongated shaft extending therefrom and defining a longitudinal axis; an end effector extending distally from the elongated shaft and defining an end effector axis, the end effector in communication with a source of electrosurgical energy; a shoulder roll joint coupling the elongated shaft to the handle, the shoulder roll joint operable to rotate the elongated shaft about the longitudinal axis; and a wrist roll joint coupling the end effector to the elongated shaft, the wrist roll joint comprising: a first tubular structure extending distally from the elongated shaft; a second tubular structure rotatably coupled to the first tubular structure about the end effector axis, the second tubular member supporting the end effector such that the end effector is rotatable with respect to the first tubular structure about the end effector axis; and a cable wrap volume disposed within the first tubular structure, wherein a conductor for coupling the end effector with the source electrosurgical energy is coiled about the end effector axis within the cable wrap volume such that rotation of the end effector about the end effector axis in a first direction unwinds the conductor.