An injection device (100) for the injection of a controlled dose of an injectable substance, including: one containment chamber (33) of the injectable substance, defined inside a tubular body (3) a plunger (5) slidingly engaged inside the tubular body (3), provided with a central stem (53) placed between a cap (51) and a base (52) a spacer applied to the plunger (5) and adapted to allow a forward movement of the plunger (5) in the containment chamber (33) up to reach an abutment of the spacer between the base (52) of the plunger (5) and the second end (32) of the containment body (3) to prevent the further forward movement of the plunger (5) in the containment chamber (33). The injection device (100) is characterized in that the spacer is a flexible dosing label (9), that can be deformed in one longitudinal direction (X) and rigid in one transverse direction (Y).提供一種用以注射控制劑量之可注射物質的注射裝置(100),包含:可注射物質的一容納腔室(33),其界定於管狀本體(3)內;滑動地接合於管狀本體(3)內的柱塞(5),其具有位於帽蓋(51)與底座(52)之間的中央主幹(53);應用至柱塞(5)的間隔件,適用於允許柱塞(5)在容納腔室(33)中向前移動,且最多及於間隔件抵接於柱塞(5)的基底(52)及容納腔室(33)的第二端(32)之間,以防止柱塞(5)在容納腔室(33)中更進一步地向前移動。此注射裝置(100)的特徵在於:間隔件為具可撓性的劑量標籤(9),劑量標籤(9)可在縱向(X)變形,在橫向(Y)則無法彎曲。910‧‧‧中央部分911‧‧‧端部913、915‧‧‧遠端邊緣92‧‧‧正面93‧‧‧背側
