The present invention relates to an auto-injector device for delivering a liquid medicament, the auto injector comprising an injector body, a syringe received in the injector body, a needle disposed in a first end of syringe to extend toward an opening of the injector body, a needle shield removeably attached to the syringe to enclose the needle and an injector cap removeably received in the opening of the injector body to enclose the needle shield. The injector cap comprises at least one engaging element to engage with the needle shield and the needle shield comprises a rupture portion. The at least one engaging element is configured to rupture the rupture portion as the cap is removed from the body. The at least one engaging element is configured to engage with at least a portion of the needle shield to retain at least a portion of the needle shield in the cap when the cap is removed from the body.本發明涉及一種用於輸送液體藥劑的自動注射器裝置,該自動注射器裝置包括:注射器主體;注射筒,其被接收在注射器主體中;針,其設置在注射筒的第一端中,朝注射器主體的開口延伸;針護罩,其可移除地附接到注射筒以包圍針;注射器帽蓋,其可移除地被接收在注射器主體的開口中以包圍針護罩。注射器帽蓋包括用以與針護罩接合的至少一個接合元件,並且針護罩包括斷裂部分。所述至少一個接合元件被組構成在從主體移除帽蓋時使斷裂部分斷裂。所述至少一個接合元件被組構成當將帽蓋從主體移除時與針護罩的至少一部分接合,以將針護罩的至少一部分在保持帽蓋中。12‧‧‧帽蓋13‧‧‧針套筒18‧‧‧注射筒25‧‧‧針護罩26‧‧‧凹口27‧‧‧可分離部分30‧‧‧細長臂32‧‧‧末端123‧‧‧伸出部分
