A cap assembly for a medicament delivery device is disclosed. The cap assembly includes a cap configured to be mounted to a proximal end of the medicament delivery device, wherein the cap comprises a cam surface. The cap assembly further includes a squeezer comprising (i) a body defining a first longitudinally extending channel configured to receive a delivery member shield and (ii) a plurality of radial arms flexible in a radial direction. The cap assembly also includes a spinner comprising (i) a proximal end face configured to cooperate with the cam surface of the cap, (ii) a body defining a second longitudinally extending channel configured to receive the squeezer, and (iii) a plurality of holes in the body of the spinner configured to receive the plurality of radial arms of the squeezer.用於藥物輸送裝置之蓋件組合體被揭示。該蓋件組合體包括蓋件，被建構來安裝至該藥物輸送裝置的近側端，其中該蓋件包含凸輪表面。該蓋件組合體另包括擠壓器，包含(i)本體，界定第一縱向延伸通道，其被建構來承納輸送構件屏蔽件，及(ii)複數個徑向支臂，在徑向方向中為撓性的。該蓋件組合體亦包括旋轉件，包含(i)近側端面，被建構來與該蓋件之凸輪表面配合，(ii)本體，界定被建構來承納該擠壓器的第二縱向延伸通道，及(iii)複數個孔洞，在該旋轉件之本體中，被建構來承納該擠壓器的複數個徑向支臂。
