1. An injection drug delivery device comprising a) a movable fuse (10) that can move between the proximal position and the distal position, and b) a locking mechanism (15) having a lever (16), while the lever (16) restricts the movement of the actuating locking element (24) as long as the movable fuse is in the distal position, and the lever (16) restricts the movement of the fuse (10) in the proximal position after the device is activated. 2. An injection drug delivery device according to claim 1, wherein the lever (16) has at least one first portion (19) located closer than at least one second portion (22) to a plane in general parallel to the longitudinal axis of the drug delivery device and including a pivot axis around which the lever (16) pivots when the lever (16) is in its initial position. 3. An injection drug delivery device according to claim 2, wherein the first portion (19) is at least partially located proximally relative to the second portion (22), while preferably the first portion (19) is at least partially located proximal to the pivot the axis of the lever (16), and the second section (22), at least partially, is located distally relative to the rotary axis of the lever (16). 4. An injection drug delivery device according to claim 2 or 3, wherein at least a portion of the first portion (19) and at least a portion of the second portion (22) are covered by a fuse (10) or an element movable by a fuse (10) when the fuse (10) moves distally. 5. Drug Delivery Device d1. Устройство доставки лекарства для инъекций, содержащееa) подвижный предохранитель (10), способный перемещаться между проксимальным положением и дистальным положением, а такжеb) запорный механизм (15), имеющий рычаг (16), при этом рычаг (16) ограничивает перемещение исполнительного запорного элемента (24) до тех пор, пока подвижный предохранитель расположен в дистальном положении, а также рычаг (16) ограничивает перемещение предохранителя (10) в проксимальном положении, после того как уст
