A deformable cartridge (10) for an injection device of an injectable solution, having a cartridge body (10,20) comprising:- at least a first containment chamber (11) of a first component of the injectable solution, wherein the first containment chamber (11) comprises at least one first compression-deformable wall；- at least a second containment chamber (21) of a second component of the injectable solution, wherein the second containment chamber (21) comprises at least one second compression-deformable wall in order to allow the second component to be transferred from the second containment chamber (21) to the first containment chamber (11)；- a separation device (12,22) operatively interposed between the first containment chamber (11) and the second containment chamber (21) having a device body comprising at least one fluidic communication duct (2) defined in the device body, wherein the deformable cartridge (1) is adapted to assume a first operating configuration in which the fluidic communication duct (2) cannot be crossed by the second component and a second operating configuration in which said duct (2) can be crossed by said second component；- a needle holder component (3) fixed to the cartridge body (10,20) and adapted and configured to be fluidly connected to the first chamber (11), wherein the first chamber (11) is operatively interposed between the needle holder component (3) and the separation device (12,22).一種用於可注射溶液之注射裝置的可變形藥筒(10)，該可變形藥筒具有藥筒主體(10、20)，該藥筒主體包含：-該可注射溶液之第一組分的至少第一容納隔室(11)，其中該第一容納隔室(11)包含至少一個第一可壓縮變形的壁；-該可注射溶液之第二組分的至少第二容納隔室(21)，其中該第二容納隔室(21)包含至少一個第二可壓縮變形的壁，以便允許該第二組分自該第二容納隔室(21)轉移至該第一容納隔室(11)；-分隔裝置(12、22)，其以可操作方式插入在該第一容納隔室(11)與該第二容納隔室(21)之間，該分隔裝置具有裝置主體，該裝置主體包含界定於該裝置主體中的至少一個流體連通導管(2)，其中該可變形藥筒(1)用於採取：第一操作組態，其中該第二組分無法穿過該流體連通導管(2)；及第二操作組態，其中該第二組分可穿過該導管(2)；-針頭托組件(3)，其固定至該藥筒主體(10、20)並且用於且經組態以流體連接至該第一隔室(11)，其中該第一隔室(11)以可操作方式插入在該針頭托組件(3)與該分隔裝置(12、22)之間。
