Wet/dry automatic injector assembly
First Claim
1. An automatic injection device containing a pre-loaded charge of medicament for automatically sell dminisiering the medicameni 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 medication 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 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 front 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 transterred to the dry compartment, wherein the dry medicament dissolves in the liquid injection solution as the liquid injection solution passes through the dry compartment, wherein the activation assembly includes a drive assembly having a stored source of energy located therein, whereby upon actuation of the activation assembly, the drive assembly releases the stored source or energy for causing liquid injection solution in the Wet compartment to be transferred to the dry compartment; and
a needle assembly for dispensing the liquid injection solution containing the dry medicament dissolved therein.
7 Assignments
0 Petitions
Accused Products
Abstract
The present invention is directed to an automatic injection device containing a pre-loaded charge of medicament for automatically self-administering the medicament upon actuation thereof. The automatic injection device includes a housing assembly having an interior chamber, an activation assembly and a needle assembly for dispensing a dissolved medicament to a user. A dry compartment for storing a predetermined dry charge of dry medicament is located within the interior chamber. A wet compartment for storing a predetermined amount of liquid injection solution is also located within the interior chamber. A separation assembly separates the dry compartment from the wet compartment. 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. One or more medicament support assemblies located within the dry compartment prevent the passage of undissolved medicament from the dry compartment.
134 Citations
13 Claims
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1. An automatic injection device containing a pre-loaded charge of medicament for automatically sell dminisiering the medicameni upon actuation thereof, the automatic injection device comprising:
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a housing assembly having an interior chamber, wherein the interior chamber includes, a dry compartment for storing a predetermined dry charge of dry medication 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 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 front 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 transterred to the dry compartment, wherein the dry medicament dissolves in the liquid injection solution as the liquid injection solution passes through the dry compartment, wherein the activation assembly includes a drive assembly having a stored source of energy located therein, whereby upon actuation of the activation assembly, the drive assembly releases the stored source or energy for causing liquid injection solution in the Wet compartment to be transferred to the dry compartment; and
a needle assembly for dispensing the liquid injection solution containing the dry medicament dissolved therein. - View Dependent Claims (2, 3, 4, 10)
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5. An injection device containing a pre-loaded charge of medicament for self-administering the medicament upon actuation thereof, the injection device comprising:
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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. - View Dependent Claims (6, 7, 8, 9)
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11. An injection device containing a pre-loaded charge of medicament for self-administering the medicament upon actuation thereof the injection device comprising:
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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. - View Dependent Claims (12, 13)
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Specification