PHOTOCHEMICAL METHOD FOR DISINFECTION AND CONTROL OF NOSOCOMIAL INFECTIONS IN HOSPITAL AND ENCLOSURES OF BIOLOGICAL RISK

摘要

The invention relates to a photochemical method for disinfection and control of nosocomial infections in hospitals and enclosures of biological risk. According to the invention, the method consists in exposing the microorganisms present in the enclosure air to the action of light quanta emitted by a lighting unit having an optical structure consisting of several types of LEDs, each diode emitting light quanta with biocidal properties having a monochromatic wave length selected from the following values: 760 nm (±20 nm) or 690 nm (±20 nm), or 660 nm (±20 nm) or 630 nm (±20 nm) or 580 nm (±20 nm) or 530 nm (±20 nm) or 470 nm (±20 nm), the lighting unit operating continuously, said method being not nocuous for humans and acting upon the microorganisms by two physical mechanisms, the absorption of quanta by prophyrins within the bacteria structure followed by destruction thereof and the generation of reactive molecule species with biocidal effect.