The invention relates to a sheath removal mechanism (15) for removing a protective needle sheath (5) from a medicament container (3), the medicament container (3) arrangeable in an medicament delivery device (1), wherein the sheath removal mechanism (15) comprises a cap (11) attachable to a distal end of the medicament delivery device (1), wherein the cap (11) comprises at least one ledge (11.6) adapted to engage a protective needle sheath (5).本發明係有關一用於從一藥劑容器(3)移除一保護針頭套筒(5)之套筒移除機構(15)，該藥劑容器(3)可配置於一藥劑輸送裝置(1)中，其中該套筒移除機構(15)包含一帽蓋(11)，該帽蓋(11)可附接至該藥劑輸送裝置(1)的一遠端，其中該帽蓋(11)包含至少一突架(11.6)，該突架(11.6)係調適以接合一保護針頭套筒(5)。
