A drive assembly(3) for a medication delivery device(1) is provided which is switchable from an operation state to a resetting state and which comprises: - a housing(13) having a proximal end(8) and a distal end(15), - a drive member(20) adapted to be rotated with respect to the housing(13), and - a stop member(26) adapted to prevent rotational movement of the drive member(20) in a first direction with respect to the housing(13) and to permit rotational movement of the drive member(20) in a second direction with respect to the housing(13), the second direction being opposite to the first direction. In the operational state of the drive assembly(3) the stop member(26) is held in engagement with the drive member(20), and for switching into the resetting state of the drive assembly(3) the stop member(26) is enabled to disengage from the drive member(20) caused by gravity due to the weight of the stop member(26). Moreover, in the operational state of the drive assembly(3) the drive member(20) may be held in engagement with a rotation member(21), and for switching into the resetting state of the drive assembly(3) the drive member(20) may be enabled to disengage from the rotation member(21) caused by gravity due to the weight of the drive member(20).提供一用於藥物輸送裝置(1)的驅動組件(3),該驅動組件係可由一操作狀態切換至一重置狀態並包含:一殼體(13),其具有一近端(8)及一遠端(15),一驅動構件(20),其經設計用以相關於該殼體(13)轉動,以及一止動構件(26),其經設計用以防止該驅動構件(20)在相關於該殼體(13)的一第一方向上轉動,並用以容許該驅動構件(20)在相關於該殼體(13)的一第二方向上轉動,該第二方向係與該第一方向相對。於該驅動組件(3)之該操作狀態下,該止動構件(26)係保持與該驅動構件(20)嚙合,以及用於切換進入該驅動組件(3)之該重置狀態,該止動構件(26)能夠藉由因該止動構件(26)之該重量的重力所導致自該驅動構件(20)脫離。此外,在該驅動組件(3)之操作狀態下該驅動構件(20)可保持與一轉動構件(21)嚙合,並用於切換進入該驅動組件(3)之重置狀態該驅動構件(20)能夠藉由因該驅動構件(20)之該重量的重力所導致自該轉動構件(21)脫離。3...驅動組件20...驅動構件21...轉動構件26...止動構件31...彈性構件39A,39B...機械式止動裝置42...彈簧蓋
