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 pre-filled compressed gas activated needle-less injector device suitable for injecting pre-filled liquid medication through the skin surface, the device comprising:a main body having a first gas chamber, a second gas chamber and a passageway in gaseous communication wit

[ What is claimed is:] [1.] A pre-filled compressed gas activated needle-less injector device suitable for injecting pre-filled liquid medication through the skin surface, the device comprising:a main body having a first gas chamber, a second gas chamber and a passageway in gaseous communication with the first and the second chambers, wherein the first gas chamber contains a pre-filled compressed gas that exits through the passageway and into the second chamber;a valve detachably mounted to block the passageway to prevent the flow of the compressed gas from the first gas chamber into the second chamber until detached;a chamber housing coupled to the main body, the chamber housing comprising:a liquid chamber that holds the liquid medication;a liquid forcing assembly disposed within the liquid chamber that forces the liquid medication out from the liquid chamber; andan orifice formed in one end of the chamber housing and in fluid communication with the liquid chamber, wherein when the valve is permanently detached from blocking the passageway, the compressed gas is released from the first gas chamber into the second gas chamber and the compressed gas pushes the liquid forcing assembly which in turn pushes the liquid medication exits through the orifice and pierces the skin surface; andan actuating member mounted on the main body to permanently detach the valve to release the compressed gas when a predetermined pressure is applied to the actuating member.