B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
21/14
B01F 13/00 (2006.01) A01N 25/34 (2006.01) A61L 2/16 (2006.01) A61L 2/18 (2006.01) A61L 2/20 (2006.01) B65D 77/22 (2006.01) B65D 81/32 (2006.01)
Patent
CA 1320030
STERILANT CONCENTRATE INJECTION SYSTEM Abstract of the Disclosure 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 (FIGURES 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. 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.
589566
Kralovic Raymond C.
Schneider Edward T.
Siegel Norman L.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Steris Corporation
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