The miniaturized injection device (1) for medical use comprises a tube (2) extending along a certain axis (A-A) and in which there is disposed at least one reservoir (12) for receiving a medicinal substance, the reservoir being connected to at least one needle (14). The needle is movable in the tube (2) along said axis (A-A) and the injection device (1) further includes a pump (13) interposed between the needle and the reservoir. The pump is controlled by a switch (21) that operates in response to the needle (14) moving in the tube along said axis (A-A).一種醫療用的小型注射裝置(1)，包含有一管(2)，沿著一軸線(A-A)延伸，且其中設置有至少一貯器(12)，用以接收一藥劑物質，該貯器係連接至至少一針(14)。該針係可沿著該軸線(A-A)在該管(2)內移動，且此注射裝置(1)進一步包含有一泵(13)，設置於該針及該貯器之間。該泵係由一可依據該針(14)沿著該軸線(A-A)在該管內的移動而作動的開關(21)來控制。
