A preloaded injector for storing and injecting hydrophobic intra ocular lenses, IOL, comprising a) an injector body accommodating a plunger placed within the injector body, b) a cartridge with a nozzle tube attached to the injector body, and furnished with a winglet adapted to hinge between an open and a closed position, the cartridge is adapted to hold the IOL in a released state in case of the open position and to cause the IOL to fold in case of the closed position, c) a stopper received into a hole defined by the injector body and preventing the plunger from reciprocating in the injector body prior to injecting, characterized in that, - a lower portion of the stopper can be plugged into the hole of the injector body through an adapter provided between the cartridge and a rotatable member, - the rotatable member is provided around the cartridge, the rotatable member having a first position and a second position, where the rotatable member is rotatable about a longitudinal axis of the injector from the first position to the second position, - the winglet of the cartridge is set from the open position to the closed position, when the rotatable member is rotated from the first position to the second position, - the rotatable member is furnished with a portion interfering with a portion of the stopper keeping the stopper irremovable when the rotatable member is in its first position but releasing the stopper when the rotatable member is in its second position, and the adapter and the rotatable member are removable from the injector body in the closed position of the winglet of the cartridge. a) an injector body accommodating a plunger placed within the injector body, b) a cartridge with a nozzle tube attached to the injector body, and furnished with a winglet adapted to hinge between an open and a closed position, the cartridge is adapted to hold the IOL in a released state in case of the open position and to cause the IOL to fold in case of the closed position, c) a stopper received into a hole defined by the injector body and preventing the plunger from reciprocating in the injector body prior to injecting, characterized in that, - a lower portion of the stopper can be plugged into the hole of the injector body through an adapter provided between the cartridge and a rotatable member, - the rotatable member is provided around the cartridge, the rotatable member having a first position and a second position, where the rotatable member is rotatable about a longitudinal axis of the injector from the first position to the second position, - the winglet of the cartridge is set from the open position to the closed position, when the rotatable member is rotated from the first position to the second position, - the rotatable member is furnished with a portion interfering with a portion of the stopper keeping the stopper irremovable when the rotatable member is in its first position but releasing the stopper when the rotatable member is in its second position, and the adapter and the rotatable member are removable from the injector body in the closed position of the winglet of the cartridge. - a lower portion of the stopper can be plugged into the hole of the injector body through an adapter provided between the cartridge and a rotatable member, - the rotatable member is provided around the cartridge, the rotatable member having a first position and a second position, where the rotatable member is rotatable about a longitudinal axis of the injector from the first position to the second position, - the winglet of the cartridge is set from the open position to the closed position, when the rotatable member is rotated from the first position to the second position, - the rotatable member is furnished with a portion interfering with a portion of the stopper keeping the stopper irremovable when the rotatable member is in its first position but releasing the stopper when the rotatable member is in its second position, and the adapter and the rotatable member are removable from the injector body in the closed position of the winglet of the cartridge.