Patent ID: 6102896
Filing Date: 2000-08-15
Classification: A61M

Abstract:
A single use injector device for injecting at least one parenteral medication into the body of a patient through a skin surface, the injector device operating by hand force, the injector device comprising:a plunger section including a plunger, the plunger having a longitudinal axis, a first end, and a second end;a base, the base being generally tubular and having a plunger end and a nozzle end, the base having a cavity and an outer surface, the cavity having a nozzle end and a longitudinal axis, the longitudinal axis of the cavity being coincident with the longitudinal axis of the plunger, the plunger being located at least partially within the cavity, the plunger sliding within the cavity parallel to the longitudinal axis of the cavity;snap means for resisting movement of at least a moving portion of the plunger section from an initial position toward the skin surface as the hand force is applied to the moving portion of the plunger section, the snap means releasing the moving portion of the plunger section abruptly as a snap point is reached, the moving portion of the plunger section moving rapidly toward the skin surface after the snap point is reached, the snap means not including a spring; andinjection means for injecting the medication, the motion of the moving portion of the plunger section toward the skin surface after the snap point is reached driving the parenteral medication through the skin surface and into the body of the patient.