Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using direct contact with electrical or electromagnetic...
Patent
1990-08-31
1992-01-28
Johnston, Jill
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using direct contact with electrical or electromagnetic...
422 23, 422 28, 2504551, A61L 214, A61L 220
Patent
active
050842390
ABSTRACT:
A process for plasma sterilization comprising exposing an article in a sterilizing chamber to at least one cycle comprising a pulsed treatment with gaseous antimicrobial agent and a plasma treatment. The pulsed treatment comprises at least two pulse-vacuum cycles, each pulse-vacuum cycle comprising the steps of exposing the article to the gaseous antimicrobial agent at a pressure of from 4 to 18 torr and reducing the pressure in the sterilizing chamber to from 0.1 to 4 torr. The plasma treatment comprising exposing the article to a plasma generated from gases selected from the group consisting essentially of argon, helium, nitrogen, oxygen, hydrogen and mixtures thereof, the exposure to the plasma being carried out at a pressure of from 0.1 to 10 torr and a temperature of less than 80.degree. C. The antimicrobial agent is selected from the group consisting of hydrogen peroxide, a peracid antimicrobial agent, and mixtures thereof, the peracid antimicrobial agent being selected from the group consisting of saturated and unsaturated peralkanoic acids having from 1 to 8 carbon atoms and halogenated derivatives thereof.
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Campbell Bryant A.
Caputo Ross A.
Moulton Kern A.
Abtox, Inc.
Alexander Lyle A.
Johnston Jill
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