Container holder assembly for a medicament delivery device comprising a housing part 22, a container holder 50, and a spring-biased needle guard 82, wherein the needle guard 82 is configured to disconnect from the container holder 50 upon movement from the extended position to the retracted position.用於藥物輸送裝置的容器保持總成包含外殼部分(22)、容器保持件(50)、及彈簧偏置式針防護器(82),其中該針防護器(82)被建構用於在由該延伸位置運動至該縮回位置時與該容器保持件(50)分開。22‧‧‧外殼部分30‧‧‧驅動構件32‧‧‧溝槽40‧‧‧藥物容器42‧‧‧肩部44‧‧‧凸緣48‧‧‧軸環50‧‧‧容器保持件54‧‧‧凸耳55‧‧‧容器保持件扣件82‧‧‧針防護器90‧‧‧防護器彈簧221‧‧‧裂口222‧‧‧固持構件501‧‧‧裂口502‧‧‧連接構件552‧‧‧抓握構件821‧‧‧支臂822‧‧‧連接構件