A safety assembly for a medicament delivery device is presented that prevents premature activation or firing of the device during shipping or handling. The disclosed safety assembly uses a tubular cover partially contained inside of the housing of the delivery device that is axially slidable relative to the housing from a first position to a second position and then to a third position, the tubular cover having a housing nib and a cap nib, where each of the cap nib and housing nib protrudes radially outward from an outer surface of the tubular cover and are located at a proximal end of the tubular cover. In the first position the housing nib and cap nib are located outside of the housing with the housing nib abutting the terminal proximal face of the housing to prevent axial movement of tubular cover relative the housing.提出一種用於藥物輸送裝置的安全組合體，其可在運輸和處理期間，防止裝置的過早啟動或發射。所揭露的安全組合體使用管狀罩件，其被局部包含在該藥物輸送裝置之殼體的內側。該管狀罩件，可相對於該殼體從第一位置軸向滑動至第二位置然後至第三位置，該管狀罩件具有殼體凸稜和蓋件凸稜，其中該殼體凸稜和蓋件凸稜的每一者從該管狀罩件的外表面徑向朝外突出，且被設置在該管狀罩件的近側端。在該第一位置中，該殼體凸稜和蓋件凸稜位在該殼體的外側，且該殼體凸稜緊抵靠著該殼體的近側終端面，以防止管狀罩件相對於該殼體的軸向運動。
