Medical device

The invention relates to from the high source infusion liquid's injector device, and a carried on the side of the injection method. The device comprises: A storage chamber (6), for storing and liquid or the liquid use, comprising a provided at least one base constant cross - section of the storage pipe (16), the water pipe with limited a storage room axis; With a pressure chamber (4), and is provided with a continuous cross - section of the pressure tube comprises a (10), the pressure tube is limited a pressure chamber axis, is arranged on at least piston and for injecting the liquid front hole (14). The pressure chamber with can be bear liquid head enough intensity. Are two wall of the lower parts, and is suitable for when the injection two rings; the pressure chamber axis and storage room axis basically superposes, and a pressure tube and a of the inner diameter of tube is foot, to let the elastic piston sealing end of the pressure chambers by a storage room. When carrying and medicine injection, liquid cylinder from the storage room is to the transfusion room.