The present invention relates to a drug delivery device comprising a housing (10), a drug container holder (60) arranged to receive a drug container (62) provided with a drug delivery member (64) A power unit (81) arranged to act on said drug container (62) for releasing a dose of drug to said patient, and an activator (81) operatively connected to said power unit (30, 48, 148) comprising a drug delivery member guard (30) movable longitudinally relative to the housing (10), the activation mechanism being adapted to move the drug And a force element (148) disposed to deflect the drug delivery member guard (30) to a proximal extended position where the delivery member (64) is covered, wherein the drug delivery member guard (30) The member guard 30 is locked in the extended position CLAIMS 1. A locking mechanism (40, 160) rockably operably disposed, the locking mechanism (40, 160) being connected to the drug delivery member guard (30) and comprising a plurality of generally radially flexible locking elements Wherein the locking mechanism further comprises a plurality of resilient surfaces (160) connected to the housing, the plurality of locking elements (40) having a radius (Y) when the drug delivery member guard (30) Directional deflection to contact the recessed surface 160 to prevent any further movement of the drug delivery member guards 30 in a distal direction. The present invention includes a space 158 connected to the housing 10 in which the locking element 40 is positioned in a non-tensioned state in the delivery mode of the drug delivery device .본 발명은 약물 전달 장치에 관한 것이며, 이 약물 전달 장치는, 하우징(10)과, 약물 전달 부재(64)가 제공된 약물 용기(62)를 수용하도록 배치된 약물 용기 홀더(60)와, 활성화 시에 투여량의 약물을 방출하기 위해 상기 약물 용기(62) 상에 작용하도록 배치된 파워 유닛(81)과, 상기 파워 유닛(81)에 작동 가능하게 연결되고, 상기 파워 유닛을 활성화시킬 수 있는 활성화 메커니즘(30, 48, 148)으로서, 상기 활성화 메커니즘(30, 48, 148)은 상기 하우징(10)에 대해 종방향으로 이동 가능한 약물 전달 부재 가드(30)를 포함하고, 상기 활성화 메커니즘은 상기 약물 전달 부재(64)가 덮혀지는 근위 연장 위치로 상기 약물 전달 부재 가드(30)를 편향시키도록 배치된 힘 요소(148)를 포함하는, 상기 활성화 메커니즘(3
