초록 ▼

An improved medication delivery device is a pen sized instrument that is powered by compressed inert gas. The needle-less injector device contains pre-filled and pre-measured medication dosages. The injector device has a pre-filled and self-contained compressed gas for providing pressure to inject t

An improved medication delivery device is a pen sized instrument that is powered by compressed inert gas. The needle-less injector device contains pre-filled and pre-measured medication dosages. The injector device has a pre-filled and self-contained compressed gas for providing pressure to inject the medication into the skin surface without the use of a needle. The injector device has a pressure sensitive deployment mechanism which insures proper seating of the injector face against the skin surface before medication delivery is accomplished. The needle-less injector device assures safe use by inexperienced operators (including children) under adverse conditions.

대표청구항 ▼

[ What is claimed is:] [1.] A needle-less injector suitable for injecting liquid medication through a skin surface of a patient, the needle-less injector comprising:a housing containing the liquid medication, wherein the housing includes an injection end with an orifice and a trigger portion opposit

[ What is claimed is:] [1.] A needle-less injector suitable for injecting liquid medication through a skin surface of a patient, the needle-less injector comprising:a housing containing the liquid medication, wherein the housing includes an injection end with an orifice and a trigger portion opposite the injection end, wherein the injection end is stationary and fixed relative to the housing;a driver that forces the medication out of the orifice of the injection end of the housing at a sufficient speed to pierce the skin surface of the patient;an at least partially external resistance sensitive trigger operatively coupled to the driver and the trigger portion of the housing, wherein movement of the resistance sensitive trigger activates the driver to force the liquid medication out of the orifice of the injection end of the housing upon application of a predetermined amount of pressure to the resistance sensitive trigger to move the resistance sensitive trigger relative to the housing towards the injection end and the skin surface and that is opposed by a predetermined amount of resistance from the skin surface of the patient resulting from the injection end of the housing having contact with the skin surface of the patient such that only the forced out liquid medication will pierce the skin surface of the patient, and wherein the resistance sensitive trigger moves closer towards the skin surface during an injection while the injection end and the housing remain substantially stationary relative to the skin surface, and wherein the resistance sensitive trigger is operatively decoupled from the driver after the injection.