Safety device for prefilled syringes

A syringe member comprising a safety device arranged at one end of said member for preventing pricking injuries, the syringe member comprising a pricking element that is arranged at one end thereof and has a distal end, and the safety device comprising a sleeve, at least one guided pin, and at least one recess, which forms a guide slot for guiding the at least one guided pin in a longitudinal direction of the syringe member when the syringe member moves relative to the safety device, wherein the sleeve comprises an exit opening at its distal end, wherein the at least one guided pin being arranged in a first slot region of the guide slot in a starting position, in which the distal end of the pricking element is arranged inside the safety device, and the at least one guided pin being arranged in a second slot region of the guide slot in a final position, in which the distal end of the pricking element is moved out of the safety device through the exit opening of the sleeve,

• wherein
• a separating region having an apex is arranged, at least in part, between the first and the second slot region, and a notional separation line that separates the first and the second slot region extending in the longitudinal direction through the apex,
• the first slot region comprising a first curved portion, on which the at least one guided pin is guided as far as the notional separation line as a result of the relative movement of the syringe member,
• the second slot region comprising a second curved portion, on which the at least one guided pin is guided, as a result of the relative movement of the syringe member, once said at least one guided pin has passed the notional separation line, wherein the distal end of the pricking element being arranged at the level of the exit opening of the safety device as said pin passes the notional separation line,
• wherein once the distal end of the pricking element has passed the level of the exit opening, the at least one guided pin is in the second slot region, in which the at least one guided pin may only be moved to a distal end region of the second slot region or to a final region of the second slot region, wherein the at least one guided pin is moved automatically into the final region by at least one spring element, which is operatively connected to the syringe member and counteracts the movement of the syringe member relative to the safety device, wherein in the final region the at least one guided pin is operatively connected to a stop element, wherein the stop element comprises an apex, which protrudes into the second slot region.