The present disclosure relates to a medicament delivery device for injection of a medicament. The medicament delivery device comprises a housing (3) arranged to receive a medicament delivery member, a medicament delivery member cover (7) received by the housing (3), which medicament delivery member cover (7) has a cap-fitting portion (7a), wherein the medicament delivery member cover (1) is moveable relative to the housing (3) from an extended position in which the cap-fitting portion (7a) extends from the housing (3), to a retracted position in which the medicament delivery member cover (7) is biased towards the extended position, and a cap (11) arranged to receive the cap-fitting portion (7a), wherein the medicament delivery member cover (7) and the cap (1) comprise a tamper evidence mechanism which is activated by removal of the cap (11) from the cap-fitting portion (7a).本揭示內容有關用於藥物之注射的藥物輸送裝置。該藥物輸送裝置包含外殼(3),被配置來承納藥物輸送構件(19);藥物輸送構件蓋子(7),藉由該外殼(3)所承納,該藥物輸送構件蓋子(7)具有套蓋裝配部份(7a),其中該藥物輸送構件蓋子(1)係可相對該外殼(3)由延伸位置運動至縮回位置,該套蓋裝配部份(7a)在該延伸位置中由該外殼(3)延伸,而該藥物輸送構件蓋子(7)在該縮回位置中被偏向朝該延伸位置;及套蓋(11),被配置來承納該套蓋裝配部份(7a),其中該藥物輸送構件蓋子(7)及該套蓋(1)包含拆封警示機件,其係藉由從該套蓋裝配部份(7a)移去該套蓋(11)所作動。