Claims
- 1. An automatic injection device containing a pre-loaded charge of medicament for automatically self-administering the medicament upon actuation thereof, the automatic 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; a separation assembly for separating the dry compartment from 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; and a needle assembly for dispensing the liquid injection solution containing the dry medicament dissolved therein.
- 2. The automatic injection device according to claim 1, wherein each of the at least one medicament support assembly prevents the passage of undissolved medicament from the dry compartment.
- 3. The automatic injection device according to claim 2, wherein each medicament support assembly includes a plurality of apertures formed therein.
- 4. The automatic injection device according to claim 3, wherein each of the apertures is sized to prevent passage of the undissolved medicament.
- 5. The automatic injection device according to claim 1, wherein the at least one medicament support assembly includes a first support located adjacent the separation assembly, and a second support located adjacent the needle assembly.
- 6. The automatic injection device according to claim 5, wherein the first support includes at least one projection adapted to engage to the separation assembly to open a passage therein to permit the passage of the liquid injection solution from the wet compartment to the dry compartment.
- 7. The automatic injection device according to claim 5, further comprising: a membrane assembly positioned adjacent the second support.
- 8. The automatic injection device according to claim 1, further comprising: a membrane assembly positioned adjacent one of the at least one support assembly.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims priority from U.S. Provisional Serial No. 60/238,448, filed Oct. 10, 2000, and is incorporated herein in its entirety by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60238448 |
Oct 2000 |
US |