Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using direct contact with electrical or electromagnetic...
Patent
1993-05-21
1995-05-09
Alexander, Lyle A.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using direct contact with electrical or electromagnetic...
422 23, 422 28, 25045511, A61L 214
Patent
active
054137586
ABSTRACT:
A process and equipment for plasma sterilization in which articles in a sterilizing chamber are taken through at least one combination sterilizing cycle. The articles to be sterilized may include the interior of a vessel or chamber. In that case, the vessel or chamber itself may serve as a sterilizing chamber and connects to the plasma generating chamber. Each combination sterilizing cycle includes a pulsed treatment with gaseous antimicrobial agent, removal of the gaseous antimicrobial agent, and a plasma treatment. The pulsed treatment includes one or more pulse-vacuum cycles, each pulse-vacuum cycle includes the steps of evacuating the sterilizing chamber and exposing the article to the gaseous antimicrobial agent with a predetermined pressure profile during a predetermined time. The gaseous antimicrobial agent is preferably carried in a gas mixture with a nonreactive carrier gas. In one embodiment, the predetermined pressure is pulsed. In another embodiment, it is ramped. After the pulsed treatment, the antimicrobial agent is removed by evacuating the sterilizing chamber. The plasma treatment includes exposure of the article to a plasma having essentially uncharged, highly reactive free radicals, molecules and atoms.
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Campbell, deceased Bryant A.
Caputo Ross A.
Jones Jeffrey
Moulton Kern A.
Abtox, Inc.
Alexander Lyle A.
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