Decontamination apparatus and method
View Patent ↗Provided is an apparatus for disinfecting an object by at least partially removing a biologically-active contaminant there from. A housing encloses a disinfection chamber in which a portion of the object is to be received to be disinfected, and includes an inlet aperture through which the object is introduced to the apparatus. An ultraviolet light source emits ultraviolet light to be imparted on the portion of the object introduced to the disinfection chamber for deactivating at least a portion of the biologically-active contaminant present on the object. A controller controls operation of at least one of a feeder and the ultraviolet light to achieve a level of disinfection of the object, rendering the object suitable for use in a substantially-sterile application.
1. An apparatus for rendering an object pathogen reduced, the apparatus comprising:
a housing enclosing a disinfection chamber in which a portion of the object is to be received to be rendered pathogen reduced;
an inlet aperture through which the object is introduced to the apparatus;
a feed path along which the object introduced to the inlet aperture is conveyed generally toward the disinfection chamber and is discharged subsequent to exiting the disinfection chamber, wherein the feed path comprises opposing rollers between which the object is transported to be introduced into the disinfection chamber, wherein
at least one of the opposing rollers is adjustably supported so a distance separating the opposing rollers is variable based at least in part on a dimension of the object passing between the opposing rollers; and
an ultraviolet light source that emits ultraviolet light to be imparted on the portion of the object introduced to the disinfection chamber for deactivating at least a portion of a viable population of the pathogen present on the object, wherein
at least one of the opposing rollers and the ultraviolet light source are each included as part of a modular cartridge that is removable as a unit from the housing.
2. The apparatus of claim 1 further comprising a controller supported by the modular cartridge to be removable from the apparatus as part of the modular cartridge, wherein the controller varies an angular velocity of at least one of the opposing rollers.
3. The apparatus of claim 1 , wherein the ultraviolet light source comprises a first ultraviolet light spaced apart from a second ultraviolet light, the first and second ultraviolet lights being supported by the modular cartridge to be arranged on opposite sides of the feed path along which the object travels while being exposed to the ultraviolet light while the modular cartridge is installed on the apparatus.
4. The apparatus of claim 3 , wherein a position of the first ultraviolet light is adjustable relative to the position of the second ultraviolet light based on the dimension of the object transported between the first ultraviolet light and the second ultraviolet light so a distance separating the first and second ultraviolet lights is adjusted during adjustment of the distance separating the opposing rollers.
5. The apparatus of claim 3 , wherein the first ultraviolet light is supported by the modular cartridge to be offset from a portion of the feed path to position the first ultraviolet light a distance that is less than or equal to about one (1 in.) from a surface of the object being exposed to the ultraviolet light.
6. The apparatus of claim 1 , wherein the modular cartridge further comprises a plurality of sets of opposing rollers, and the sets of opposing rollers each comprise an adjustable distance separating the opposing rollers of the respective one of the sets based on the dimension of the object.
7. The apparatus of claim 1 further comprising a controller that controls operation of a motor provided to the apparatus separate from the modular cartridge that drives one or more of the opposing rollers provided to the modular cartridge to vary an angular velocity of the one or more of the opposing rollers to control a rate at which the object travels along the feed path.
8. The apparatus of claim 7 , wherein the controller is operable to control operation of the motor to achieve at least a 1 log 10 reduction of the viable population present on the object prior to exposure of the object to the ultraviolet light.
9. The apparatus of claim 1 , wherein each of the opposing rollers is driven by a common motor.
10. The apparatus of claim 1 , wherein the modular cartridge comprises an electrical connector plug that is accessible externally of the modular cartridge and cooperates with a mating connector plug provided to the housing for establishing an electrical connection between the modular cartridge and an electric power supply.
11. The apparatus of claim 1 , wherein the modular cartridge comprises a sensor for sensing an intensity of the ultraviolet light emitted by the ultraviolet light source and transmitting a signal indicative of the intensity to be received by a controller for establishing a minimum exposure time that the object is to be exposed to the ultraviolet light to achieve the level of pathogen reduction that renders the object suitable for use in a substantially-sterile application.