Instrument for minimally invasive surgery having attachable/detachable end effector

The present invention relates to minimally invasive surgical instruments having a detachable end-effector. A minimally invasive surgical instrument, a shaft, and connected to the joint, and the joint is connected to one end of the shaft, thereby comprising an end effector capable of a range of motion, and the joint is detachable coupling which can be passed a rotational torque the it included, and the end effector is a minimally invasive surgical instrument comprising a working end connecting portion that can be separated from the detachable connecting portion by subtracting return may be attached to the detachable connecting portion is provided with wear back manner.