Wet/dry automatic injector assembly

An injection device containing a pre-loaded charge of medicament for self-administering the medicament upon actuation thereof, the injection device comprising:

• a housing assembly having an interior chamber, wherein the interior chamber includes a dry compartment for storing a predetermined dry charge of dry medicament therein, and a wet compartment for storing a predetermined amount of liquid injection solution therein;
• at least one medicament support assembly located within the dry compartment, wherein the at least one medicament support assembly preventing the passage of undissolved dry medicament therethrough;
• a movable separation assembly located within the interior chamber for separating the dry compartment from the wet compartment, wherein the separation assembly is movable with respect to at least the dry compartment, wherein the separation assembly prevents transfer of the liquid injection solution from the wet compartment to the dry compartment prior to activation of the automatic injection device;
• an activation assembly for causing the liquid injection solution in the wet compartment to be transferred to the dry compartment, wherein the dry medicament dissolves in the liquid injection solution as the liquid injection solution passes through the dry compartment;
• and
• a needle assembly for dispencing the liquid injection solution containing the dry medicament dissolved therein,
• wherein the at least one medicament support assembly includes a first medicament support located adjacent the separation assembly, and a second medicament support located adjacent the needle assembly, wherein at least one medicament support assembly includes a plurity of apertures formed therein.

An injection device containing a pre-loaded charge of medicament for self-administering the medicament upon actuation thereof the injection device comprising:

• a housing assembly having an interior chamber, wherein the interior chamber includes a dry compartment for storing a predetermined dry charge of dry medicament therein, and a wet compartment for storing a predetermined amount of liquid injection solution therein;
• at least one medicament support assembly located within the dry compartment, wherein the at least one medicament support assembly preventing the passage of undissolved medicament therethrough, wherein each medicament support assembly includes a plurality of apertures formed therein;
• a movable separation assembly located within the interior chamber for separating the dry compartment from the wet compartment, wherein the separation assembly is movable with respect to the dry compartment and the wet compartment, wherein the separation assembly prevents transfer of the liquid injection solution from the wet compartment to the dry compartment prior to activation of the automatic injection device;
• an activation assembly for causing the liquid injection solution in the wet compartment to be transferred to the dry compartment, wherein the dry medicament dissolves in the liquid injection solution as the liquid injection solution passes through the dry compartment;
• needle assembly for dispensing the liquid injection solution containing the dry medicament dissolved therein;
• and
• a diaphragm assembly positioned near one of the at least one medicament support assembly and the needle assembly.