1. Security element (1.1) for the needles, containing at least two different plastic materials of different elasticity and having a central opening (1.1.3) of variable diameter (D1, D2), wherein the central opening (1.1.3) has a first diameter (D1) for retaining the inside of the cap (2.2) of the needle where the diameter of the central opening (1.1.3) is changed by removing the cap (2.2) of the needle with a first diameter (D1) at a second diameter (D2) by virtue of the memory effect of the material of the protective element ( 1.1) for the needle, characterized in that the protective element (1.1) for needle injection method is made Vågå pressovaniya.2. The security element (1.1) for the needle according to claim 1, characterized in that the protective element (1.1) for the needle is made of the following combinations of plastic materials in any combination: polymers, elastomers, silicones and silicone elastomery.3. The security element (1.1) for the needle according to claim 1, characterized in that the distal end wall (1.1.1) of the protective element (1.1) for the needle is made of relatively elastic plastic materiala.4. The security element (1.1) for the needle according to any one of the preceding claims, characterized in that the peripheral portion (1.1.4) of the distal end wall (1.1.1) is made of a relatively rigid plastic material, while the portion (1.1.5) of the opening of the distal end wall (1.1.1) is made of relatively elastic plastic materiala.5. A protective device (1) for a prefilled syringe (2), soderzhaschee- hollow support body (1.2) for holding therein a prefilled syringe (2) and- protective element (1.1) for the needle according to any one of the preceding claims, wherein the protective element ( 1.1) the needle is slidably disposed relative GCO1. Защитный элемент (1.1) для иглы, содержащий, по меньшей мере, два различных пластиковых материала разной упругости и имеющий центральное отверстие (1.1.3) переменного диаметра (D1, D2), в котором цент
