. . "More preferably, the core of the device is a dielectric waveguide 120 have a sheath of ultimate exterior covering that is fabricated from a biocompatible material, wherein light at several specific wavelengths generated by using a light source, such as lasers or LEDs 131 and 132, is propagated through the waveguide 120 to specific areas where the waveguide is exposed to the environment, that is bl" . .