1. A drive for driving the spindle of a drug delivery device, said drive comprising a first component (44； 207) and a second component (46； 212) rotationally coupled to said first component (44； 207), in which during discharge said drug delivery device, said first component (44； 207) is rotationally disconnected from said second component (46； 212) .2. A drive according to claim 1, wherein the first component (207) comprises a first component (210) and a second component (211). The drive according to claim 1, in which the first component (44； 207) is an integrated component. The drive according to any one of claims 1 to 3, in which during the reset of the specified drug delivery device, said first component (44； 207) is disconnected from said second component (46； 212), moving the first component in the axial direction. The drive according to claim 1, wherein said first component (44； 207) and said second component (46； 212) rotate together at the same speed when using the specified drug delivery device in order to set the dose of the drug. The drive according to claim 1, wherein said first component (44； 207) and said second component (46； 212) rotate and / or move in the axial direction when said device is used to inject a predetermined dose of a drug. The drive according to claim 1, further comprising a spindle (42； 214) and a spindle guide meshed with said spindle (42； 214), where, during the reset of said drug delivery device, said spindle (42； 214)1. Привод для приведения в движение шпинделя устройства доставки лекарственного средства, причем указанный привод содержит первый компонент (44； 207) и второй компонент (46； 212), вращательно соединенный с указанным первым компонентом (44； 207), в котором во время сброса указанного устройства доставки лекарственного средства указанный первый компонент (44； 207) вращательно отсоединяют от указанного второго компонента (46； 212).2. Привод по п.1, в котором первый компонент (207) содержит первую составную часть (210) и
