A hinged cap device for use with a syringe comprising: a base defining an interior cavity for mounting onto a syringe tip; a cap comprising a base wall, a first side wall, and a second side wall defining an open channel, wherein the cap is connected to the base by a living hinge and is rotatable and ixially movable relative to the base from a ready position to an open position to expose a needle having a needle shaft and a needle tip and further from the open position to a secured position; characterized by: a first latching mechanism on the cap for engaging the needle in a ready position, the first latching mechanism comprising a projection attached to the cap and extending into the open channel and having a sloped catch lever located at an end of the projection and for trapping the needle on a first side of the needle shaft in the ready position; wherein the needle is disengageable from the first latching mechanism in the ready position; and a second latching mechanism on the cap for engaging the base, said second latching mechanism comprises a pair of two tabs each extending from the first side wall and the second side wall, and wherein each tab of the two tabs is adapted to abut in the ready and secured position a respective base tab located on the base. a base defining an interior cavity for mounting onto a syringe tip; a cap comprising a base wall, a first side wall, and a second side wall defining an open channel, wherein the cap is connected to the base by a living hinge and is rotatable and ixially movable relative to the base from a ready position to an open position to expose a needle having a needle shaft and a needle tip and further from the open position to a secured position; characterized by: a first latching mechanism on the cap for engaging the needle in a ready position, the first latching mechanism comprising a projection attached to the cap and extending into the open channel and having a sloped catch lever located at an end of the projection and for trapping the needle on a first side of the needle shaft in the ready position; wherein the needle is disengageable from the first latching mechanism in the ready position; and a second latching mechanism on the cap for engaging the base, said second latching mechanism comprises a pair of two tabs each extending from the first side wall and the second side wall, and wherein each tab of the two tabs is adapted to abut in the ready and secured position a respective base tab located on the base. a first latching mechanism on the cap for engaging the needle in a ready position, the first latching mechanism comprising a projection attached to the cap and extending into the open channel and having a sloped catch lever located at an end of the projection and for trapping the needle on a first side of the needle shaft in the ready position; wherein the needle is disengageable from the first latching mechanism in the ready position; and a second latching mechanism on the cap for engaging the base, said second latching mechanism comprises a pair of two tabs each extending from the first side wall and the second side wall, and wherein each tab of the two tabs is adapted to abut in the ready and secured position a respective base tab located on the base.