A syringe having a dispensing element (20) and having a mounting element (2) wherein the dispensing element (20) has a dispensing sleeve (21) and a leaf spring system (3) wherein the mounting element (2) has a syringe body (17) and an injection needle (16) is formed on one end on the syringe body (17) and a detent engagement flange (19) is formed on the other end wherein in the syringe body (17) there is arranged a movable stopper (18) wherein the leaf spring system (3) comprises a piston (6) and a spiral spring (5) arranged around the piston (6) wherein the piston (6) can be slid into the dispensing sleeve (21) and the spiral spring (6) is arranged between a leaf spring base (22) and a spiral spring abutment wherein the piston (6) abuts against the stopper (18) wherein the dispensing sleeve (21) has a guide duct and the dispensing sleeve (21) comprises a first locking means (7) and a second locking means (9) wherein the detent engagement flange (19) is movable in the guide duct and is fixable and releasable at the first locking means (7) or the second locking means (9).
