A gastro-intestinal (GI) scope device for use in the disinfection of a patient's colon including a gastro-intestinal (GI) scope having an insertion tube and a universal cord, an ultraviolet (UV) light assembly, and a UV light sleeve assembly, wherein the UV light assembly includes a power source, a UV light box operatively connected to the power source, and a UV light source operatively connected to the UV light box, wherein the UV light source is located within an interior of the insertion tube and the UV light sleeve assembly is located on an end of the insertion tube in order to disinfect a patient's colon.
