Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using microwave energy
Patent
1991-04-29
1995-05-09
McMahon, Timothy M.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using microwave energy
219686, 219727, 25045511, 422294, 422299, A61L 212
Patent
active
054137578
ABSTRACT:
Method and apparatus for sterilizing articles including introducing the article and liquid solution into a collapsible pouch formed of vapor-impermeable sheet material, sealing the collapsible pouch to form a gas-tight assembly, and heating the gas-tight assembly to vaporize the liquid solution to produce an atmosphere of hot vapor. The liquid is introduced into the pouch in a quantity sufficient to create an overpressure when vaporized which is indicated by the collapsible pouch expanding to a distended condition. In one embodiment, the liquid solution is vaporized by irradiating the gas-tight assembly with microwave radiation. In other embodiments particularly suited for sterilizing a plurality of metallic articles, the at least one article is surrounded by shielding, which may be separate from or integrated with the pouch, which presents a barrier to the transmission of microwave radiation. The pouch containing the shielded article or articles and liquid solution is sealed and the gas-tight assembly is irradiated with microwave radiation to vaporize the liquid whereupon the article or articles are sterilized under the effect of vapor under pressure.
REFERENCES:
patent: 3215539 (1965-11-01), Landy
patent: 3219460 (1965-11-01), Brown
patent: 3494722 (1970-02-01), Gray
patent: 3494724 (1970-02-01), Gray
patent: 3615713 (1971-10-01), Stevenson
patent: 3676058 (1972-11-01), Gray
patent: 4808782 (1989-02-01), Nakagawa et al.
Kutner Barry S.
Latowicki Daniel A.
Flexiclave, Inc.
McMahon Timothy M.
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