1. A new self-locking, self-destructing safety syringe that contains a hollow cylinder (1), a piston (2) sliding inside the cylinder (1), a rubber seal (3) on the front of the piston (2) and a needle holder (4) on the front of the cylinder (1) characterized in that the piston (2) is provided with a round platform (14), which is equipped with an elastic latch (15), inclined protruding toward the inner wall of the cylinder； at the end of the cylinder, a section (6) of increased diameter is provided； in the intermediate position of the cylinder, between the normal diameter section (7) and the enlarged diameter section (6), a beveled step (8) is located, under which there is a groove (9) where the elastic latch (15) can be caught when the piston is pulled back； and the enlarged diameter section (6) has a snap ring (10) inside, which can press on the lower plane of the circular platform (14). ! 2. A new self-locking, self-destructible safety syringe according to claim 1, characterized in that the said snap ring (10), dynamically mated with the inner wall of the enlarged diameter section (6) at the end of the cylinder, can move forward and backward in the axial direction, not leaving the cylinder, with a stroke that is greater than the distance from the edge of the elastic latch (15) on the piston (2) to the lower plane of the round platform (14)； the inner diameter of the upper end of the spring ring (10) is slightly smaller than the inner diameter of the cylinder at the beveled step (8)； the snap ring (10) is provided with a bevel (11) on the inner circumference； and when installing the piston, the elastic latch (15) can move forward and fold inward, sliding along the bevel (11), and the round platform (14) can slide1. Новый самоблокирующийся, саморазрушающийся безопасный шприц, который содержит полый цилиндр (1), поршень (2), скользящий внутри цилиндра (1), резиновый уплотнитель (3) спереди поршня (2) и держатель (4) иглы спереди цилиндра (1), отличающийся тем, что пор
