Chemical apparatus and process disinfecting – deodorizing – preser – Physical type apparatus – Apparatus for treating solid article or material with fluid...
Patent
1988-03-07
1991-08-06
Johnston, Jill
Chemical apparatus and process disinfecting, deodorizing, preser
Physical type apparatus
Apparatus for treating solid article or material with fluid...
206219, 206532, 422100, 422102, 422294, B01F 1300, A61L 200
Patent
active
050376233
ABSTRACT:
A tubing system (18) connects a source (10) of tap water with a container (20) holding an item to be sterilized. Powdered buffers, detergents, and corrosion inhibitors are deposited in a well (34) along with an ampule (46) containing a sterilant, such as peracetic acid. The ampule includes an exterior wall (80) which defines an interior volume (82) and a linear vent passage (84) extending from the exterior wall to a central region of the interior volume. A gas permeable liquid impermeable membrane (100) is mounted across a vent aperture (86) which is disposed adjacent the geometric center of the interior volume. The volume is filled less than half way full with the liquid sterilant such that in all orientations of the ampule (FIGS. 4A-C), an upper surface (98) of the sterilant remains below the vent aperture. A pump (50) recirculates the water through the container, the tubing system, and the well to dissolve the powdered reagents. A tubular needle (70) of an aspirator system (42) is moved along the vent passage and through the vent aperture such that its free end is immersed in the sterilant. An aspirator (44) draws the sterilant from the ampule into the tubing system, mixing it with the recirculating water.
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"Raychem: Faster, Better, Quicker" by Alysssa Lappen, Forbes, Nov. 2, 1987, pp. 200-203.
Kralovic Raymond C.
Schneider Edward T.
Johnston Jill
Steris Corporation
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