and 1. A dose control mechanism 10 for a disposable syringe, comprising a piston 14 having a large-pitch thread 14B on its outer surface, a housing 20 having a corresponding large-gauge guide thread 20C along the inner surface of the housing 20, a screw 30 having a fine-thread 30B , which interacts with a nut 18B with a small thread pitch of the adapter 18 located on the distal end of the housing 20 and fixed on it to prevent mutual movement between them when moving the piston 14 at the proximal or the true direction relative to the housing 20, and the piston 14 contains an inner annular space 14C, inside of which, at least partially, there is a screw 30, while the piston 14, having a thread 14B with large pitch, is made to rotate along the corresponding guide thread 20C with a large step, with at least part of the piston 14 is fixed against rotation for interaction with the corresponding fixed against rotation of the part of the screw 30 in such a way that provides axial movement between both of these components, and the ratio of the thread pitch 14B with a large pitch to the thread pitch 30B with a small pitch defines the movement of the screw 30 in the distal direction. 2. The mechanism 10 according to claim 1, characterized in that the step ratio between the thread 14B with a large pitch and the thread 30B with a small pitch is from about 1: 1 to about 20: 1.3. The mechanism 10 according to any one of paragraphs. 1 or 2, characterized in that the step ratio between the large-thread thread 14B and the small-thread thread 30B can be as follows: about 4: 1, about 3: 1, and about 2: 1.4. The mechanism 10 according to any one of paragraphs. 1 or 2, different��и1. Механизм 10 контроля величины дозы для одноразового шприца, содержащий поршень 14, имеющий на своей наружной поверхности резьбу 14В с крупным шагом, корпус 20, имеющий соответствующую направляющую резьбу 20С с крупным шагом вдоль внутренней поверхности корпуса 20, винт 30, имеющий резьбу 30В с мелким шагом,
