A medical treatment tool is provided having: a force transmission member having a distal end and a proximal end an end effector which is provided on the distal end of the force transmission member in a non-rotatable manner with respect to the force transmission member a control wire which is inserted into the force transmission member and a rotatable coupling which is provided between the end effector and the control wire, and is coupled rotatably to the end effector with respect to the control wire.
