Dismountable bone punch having a shaft and a handle , wherein the shaft has a first shaft part and a second shaft part , wherein the first shaft part has at least a first guide element , and wherein the second shaft part has at least a second guide element , wherein the first shaft part is connected to the second shaft part such that the first guide element is in engagement with the second guide element and the first shaft part is movable relative to the second shaft part parallel to a direction resulting from proximal to distal, wherein the shaft is displaceable into a dismounting position , a neutral position , and a punching position , wherein the handle has a first handle part and a second handle part , wherein the first handle part is movably connected to the second shaft part , wherein the second handle part is connected to the second shaft part , wherein the shaft is displaceable from the neutral position into the punching position by means of a first movement of the first handle part , wherein the shaft is displaceable from the neutral position into the dismounting position by means of a second movement of the first handle part , wherein the first shaft part has a locking region , wherein the locking region is displaceable from a neutral position into an unlocking position , wherein the locking region is designed in such a way that, when the locking region is in the neutral position , a displacement of the shaft into the dismounting position is prevented, and characterized in that , by means of the second movement , the locking region is simultaneously displaced into the unlocking position and the shaft is displaced into the dismounting position . the shaft has a first shaft part and a second shaft part , wherein the first shaft part has at least a first guide element , and wherein the second shaft part has at least a second guide element , wherein the first shaft part is connected to the second shaft part such that the first guide element is in engagement with the second guide element and the first shaft part is movable relative to the second shaft part parallel to a direction resulting from proximal to distal, wherein the shaft is displaceable into a dismounting position , a neutral position , and a punching position , wherein the handle has a first handle part and a second handle part , wherein the first handle part is movably connected to the second shaft part , wherein the second handle part is connected to the second shaft part , wherein the shaft is displaceable from the neutral position into the punching position by means of a first movement of the first handle part , wherein the shaft is displaceable from the neutral position into the dismounting position by means of a second movement of the first handle part , wherein the first shaft part has a locking region , wherein the locking region is displaceable from a neutral position into an unlocking position , wherein the locking region is designed in such a way that, when the locking region is in the neutral position , a displacement of the shaft into the dismounting position is prevented, and characterized in that , by means of the second movement , the locking region is simultaneously displaced into the unlocking position and the shaft is displaced into the dismounting position . <EOS>