Object decontamination method using an adjustable ultravioet source
View Patent ↗Provided is a decontamination apparatus including a base, and a source that emits UVC light at a suitable intensity to at least partially decontaminate a target object and render the target object pathogen reduced. An adjustable support is coupled to the base and includes an adjustment mechanism that can be manipulated to adjust a position of the source relative to the base. A controller is operatively connected to the source to control emission of the UVC light and establish at least one of a suitable duration of a decontamination process and a suitable intensity of UVC light to render the target object pathogen reduced.
1. A method of rendering a surface pathogen reduced, the method comprising:
positioning a base supporting a plurality of arms, each provided with a UVC light source, at a suitable location where a first one of the UVC light sources is supported adjacent to the surface, wherein positioning the base comprises resting the base on a floor at a location where the first one of the UVC light sources is positionable above the surface;
adjusting a position of the first one of the UVC light sources relative to the base by: (i) adjusting a first arm, included in the plurality of arms, to position the first one of the UVC light sources at an elevation vertically above the floor and the surface, and (ii) adjusting an orientation of the first one of the UVC light sources relative to the first arm to establish an angle of incidence of UVC light emitted by the first one of the UVC light sources onto the surface that is approximately perpendicular to the surface; and
causing the first one of the UVC light sources to be activated after an operator who adjusted the position of the first one of the UVC light sources has moved away from the base, wherein the first one of the UVC light sources is activated while positioned at the elevation, and remains active for a suitable length of time to emit the UVC light at the angle of incidence toward the surface and achieve a desired level of pathogen reduction on the surface.
2. The method of claim 1 further comprising:
causing deactivation of the first one of the UVC light sources after the desired level of pathogen reduction has been achieved.
3. The method of claim 1 , wherein the desired level of pathogen reduction comprises at least a 1 log 10 reduction of contagions on the surface from a population of contagions that was on the surface prior to activation of the first one of the UVC light sources.
4. The method of claim 1 , wherein said adjusting the position of the first one of the UVC light sources comprises adjusting a distance that the first arm extends from the base.
5. The method of claim 1 , wherein said adjusting the position of the first one of the UVC light sources further comprises adjusting an orientation of a segment of the first arm relative to the base.
6. The method of claim 1 , wherein said adjusting the position of the first one of the UVC light sources comprises:
causing a probe coupled to the first one of the UVC light sources to extend approximately perpendicular to a plane in which a bulb provided to the first one of the UVC light sources is arranged; and
positioning the probe between the surface and the first one of the UVC light sources.
7. The method of claim 1 , wherein said adjusting the position of the first one of the UVC light sources comprises:
positioning the first one of the UVC light sources a perpendicular distance of less than twenty four (24 in.) inches from the surface.
8. The method of claim 1 , wherein said causing the first one of the UVC light sources to be activated comprises causing the first one of the UVC light sources to emit UVC light for longer than sixty (60 sec.) seconds.