hub 104 by applying an ultraviolet uv resin to the surface of the needle hub 104 and exposing the needle hub to uv light in such an embodiment the uv resin reacts to the uv light and creates the mark 118 for instance a suitable uv ink by capex corporation may be used due to its polymerization initiated by exposure to the uv light however any suitable method of applying a visually coded mark may be used to create the mark 118 such as without limitation pad printing dipping roll printing laser treating two shot molding and so forth fig4 is a perspective view illustrating the needle hub 104 in more detail an opening 120 on an end of the needle hub 104 is configured to receive the barrel 106 the opening 120 includes an inner surface having a recessed surface 122 configured to fasten the needle hub 104 to the barrel 106 the needle hub 104 also includes a needle base 124 having shape unique to the manufacturer to distinguish it from competitor 39 s products in the example of fig4 the base 124 is cylindrical having a radius substantially similar to the radius of the barrel 106 and includes a rounded end that tapers to be planar with and expose the needle 102 as illustrated in fig4 the needle 102 axially extends from the needle base 124 as described above the needle base 124 is also configured to receive and keep the safety shield 114 in a substantially fixed position fig5 is a cross sectional view of the proximal end of the syringe 100 in the axial direction of the needle 102 that illustrates the recessed surface 122 of the opening 120 engages a tapered notch 128 on an.