The present invention concerns a syringe assembly comprising a hollow tubular syringe body, having a proximal end and a distal end, a plunger rod, axially movable in the syringe body between an initial position and a final position. The assembly also includes a support transversally stiff for supporting the plunger rod, the support having a distal end and a proximal end respectively transversally fixed to the syringe body and to the plunger rod, the proximal end of the support being movable with respect to the syringe body.
