Patent ID: 6602222
Filing Date: 2003-08-05
Classification: A61M

Abstract:
A hand-operated injector device consisting of a cap, a plunger, a base having a cavity and outer surface, a snap means for resisting movement of the plunger and an injection capsule for injecting by pressurized fluid flow of at least one parenteral medication in the injection capsule through skin of a patient, wherein the improvement comprises:a central finger centrally located within the cap and being movable relative to the injection capsule; a narrow plunger centrally located within an annular wide plunger, the narrow plunger being movable separately from and in unison with the annular wide plunger, the narrow plunger and the annular wide plunger forming a composite plunger and forming a part of the injection capsule located within the base; and a dosage capsule having a fine injection orifice at one end and containing liquid medicament also forming a part of the injection capsule; whereby, the narrow plunger, being suddenly forced downward by the central finger upon breakage of the snap means, generates a high pressure in the injection capsule to force a volume of medicament through the orifice as a high pressure jet to form a track through the skin of the patient.