A device safety needle comprising: a hub (27) including a passageway extending therethrough and a needle cannula (25) having a puncture tip (35) extending from a front end of same a protection element (8) in telescoping association with the hub (27), at least one of the hub (27) and the protective element (8) adapted for telescopic movement relative to one another between a first position which puncture tip (35) of the needle cannula (25) is exposed from a front end of the protective element (29) and a second position in which the puncture tip (35) of the needle cannula ( 25) is incorporated into the protective element (8) an actuating element (9) disposed between the hub (27) and the protective element (8) and capable of activating the hub (27) and the protective element (8) telescopically alejándoles each other characterized in that a contact element comprises a lever (16) pivotally coupling the protection element (8) including a front portion adjacent the puncture tip (35) of the needle cannula (25) and a rear It is including structure for releasably maintain the hub (27) and the protective element (8) in the first position, the contact element adapted to keep the hub (27) and the protective element (8) in the first position against the activation of the actuating element (9) with the cannula (25) exposed needle from a front end of the protective element (8), and the element movable contact during contact with a surface, thus allowing the release of the hub (27) and the protective element (8) from the first position and allowing the drive element (9) activating at least one of the hub (27) and the protective element (8) to the second position.Un dispositivo de aguja de seguridad que comprende: un cubo (27) que incluye un pasadizo que se extiende a través del mismo y una cánula de aguja (25) que tiene una punta de punción (35) que se extiende desde un extremo delantero del mismo un elemento de protección (8) en asociación telescópica con el cubo (27), al menos uno
