Wet/dry automatic injector assembly

A device (10) automatic injection containing an amount of medication prefilled self-administering the medicament upon activation, which device (10) automatic injection comprising: a set (110) housing having an interior chamber; and a set (140) for dispensing needle liquid injection solution containing dry medicament dissolved that it; the interior chamber including a dry compartment (160) for storing a predetermined dry charge of drug and a wet compartment (150) for storing a predetermined amount of liquid injection solution; a set (180) for separating the dry compartment (160) the wet compartment (150), the assembly (180) of separation prevents transfer of liquid injection solution from the (150) wet compartment to the dry compartment (160) before activation of the device (10) automatic injection; and a set (120) activation parahacer the liquid injection solution from the wet compartment (150) is transferred to the dry compartment (160) so that the dry medicament dissolves in the liquid injection solution as the injection solution liquid passes through the dry compartment (160); characterized by: two sets (190) bearing axially delimit the drug dry compartment (160), including sets (190) a plurality of openings drug (193) therethrough support.