Minimally invasive surgical instrument having a shaft that includes an inner torque transmitting member

The present invention relates to a minimally invasive surgical instrument having a shaft that includes an inner torque transmitting member. In accordance with one aspect of the present invention, there is provided a minimally invasive surgical instrument, a shaft, and one end includes an end effector that is connected to, and wherein the shaft comprises at least one bent portion, said at least one valley portion is the end effector of the shaft is a minimally invasive surgical instrument with the torque for operating the roll direction to pass by the interior of the torque transmission member is provided.