At the pivotable needle protector (1) according to the invention, the needle (2) is enveloped by a protective tube (3) with a slit on the side and pivotable around a hinge (5), the hinge (5) of the protective tube (3) is connected to an appendix (4) fixed on the part of the needle (2) toward the syringe, in the inside of the protective tube (3) there are valve elements (6) on both sides farthering from the slit (7), functioning as check valve regarding the movement of the needle (2). The solution is characterized by that, before the check valve at least one more valve is formed in the protective tube (3) in direct connection with the needle (2) when moving, preventing only the two-way movement of the needle (2) with the help of one or more flexible valve membranes (8) protruding from the wall of the protective tube (3).