A surgical instrument for treating a medical condition of a patient includes a protruding tool and a body assembly carrying the protruding tool. The body assembly includes a plurality of flexible claws and a locking ring moveable along the flexible claws between a locked position and an unlocked position. A main body forms a hand grip portion and includes an engagement interface portion configured to cooperate with the flexible claws to secure the body assembly to the main body when the locking ring is in the locked position.
