The present invention relates to a cap assembly 10 configured to be connectable to a suitable medicament delivery device having a distal and a proximal end. The cap assembly 10 according to the present invention comprises a removable outer 12 cap and a removable inner 16 cap movably connected in relation to each other. Further, said cap assembly is configured to allow said removable outer cap and said removable inner cap to be fixedly connectable to each other such that the removable outer cap is prevented of being movable with respect to the removable inner cap only when the medicament delivery device is held in a substantially vertical position such that both said removable outer cap and said removable inner cap can be removed from the cap assembly.本發明有關帽蓋組合體(10),被建構成可連接至具有遠側端及近側端之合適的藥物輸送裝置。根據本發明之帽蓋組合體(10)包括一可移去的外部帽蓋(12)及一可移去的內部帽蓋(16),該等帽蓋可運動地關於彼此連接。再者,該帽蓋組合體被建構成允許該可移去的外部帽蓋及該可移去的內部帽蓋可固定地彼此連接,使得僅只當藥物輸送裝置被固持在實質上直立的位置中時,該可移去的外部帽蓋被防止可相對於該可移去的內部帽蓋運動,使得該可移去的外部帽蓋及該可移去的內部帽蓋兩者可由該帽蓋組合體被移去。12‧‧‧外部帽蓋14‧‧‧夾持器構件17‧‧‧屏蔽前部18‧‧‧偏向外部帽蓋鎖定機構22‧‧‧外部螺紋結構26‧‧‧轂部30‧‧‧針32‧‧‧對應的嚙合構件74‧‧‧支臂
