Device for filling medicament injectors
First Claim
1. A front-filling dispenser for introducing liquid medicament into a needleless injector having a tip containing an injection orifice, comprising:
- a vial adapted to contain such medicaments;
a resilient plug effectively sealing one end of said vial, said plug having a self-sealing passage therethrough and being deformable to conform sealingly with the tip of said injector;
means releasably positioning said injector with respect to said vial, for bringing the passage in said plug into communication with said orifice and maintaining said plug in sealing contact with said tip;
means for varying the volume of said vial and thereby forcing said medicament through said passage and orifice; and
manually manipulable means, precisely calibrated in terms of medicament volume, for operating said volume varying means and thereby controlling the volume of medicament transfered from said vial into said injector.
1 Assignment
0 Petitions
Accused Products
Abstract
Either a pyrotechnic-powered needleless injector or (with spacer adapters) a conventional syringe is held in firmly abutting alignment with a dispensing orifice of a special storage vial. A flexible perforated seal forms a plug in the dispensing orifice, opens under liquid pressure to dispense medicament from vial to injector, and seals around the dispensing path between vial and injector against loss of the medicament. The liquid medicament is forced through the orifice under the action of a plunger forming one wall of the vial. The plunger in turn is driven by a micrometer-type screw whcih is calibrated in terms of dispensed volume.
96 Citations
14 Claims
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1. A front-filling dispenser for introducing liquid medicament into a needleless injector having a tip containing an injection orifice, comprising:
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a vial adapted to contain such medicaments; a resilient plug effectively sealing one end of said vial, said plug having a self-sealing passage therethrough and being deformable to conform sealingly with the tip of said injector; means releasably positioning said injector with respect to said vial, for bringing the passage in said plug into communication with said orifice and maintaining said plug in sealing contact with said tip; means for varying the volume of said vial and thereby forcing said medicament through said passage and orifice; and manually manipulable means, precisely calibrated in terms of medicament volume, for operating said volume varying means and thereby controlling the volume of medicament transfered from said vial into said injector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification