Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using disinfecting or sterilizing substance
Reexamination Certificate
2006-10-31
2006-10-31
Corcoran, Gladys JP (Department: 1744)
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using disinfecting or sterilizing substance
C422S001000, C422S004000, C422S022000, C422S024000, C422S105000, C422S121000, C422S186220, C204S176000, C204S194000, C205S626000, C205S334000, C205S752000, C205S756000, C205S615000
Reexamination Certificate
active
07128872
ABSTRACT:
The sterilization method disclosed includes the steps ofproviding a sterilization chamber;placing the article into the sterilization chamber;equalizing the temperature of the article and thesterilization atmosphere;sealing the sterilization chamber;applying a vacuum of a preselected vacuum pressure to the sterilization chamber;supplying water vapour to the sterilization chamber under vacuum;supplying ozone-containing gas to the sterilization chamber;maintaining the sterilization chamber sealed for a preselected treatment period; andreleasing the vacuum in the sterilization chamber;whereby a vacuum pressure is used which lowers the boiling temperature of water in the sterilization chamber below the temperature in the sterilization chamber. One or more ventilating cycles can be added to the preferred method for removing the remaining ozone and humidity from the sterilization chamber. Single cycle sterilization with ozone is more efficient and provides for a shorter sterilization cycle than with ETO and requires few changes in user habits. Moreover, the ozone-based process in accordance with the invention is compatible for use with current packaging, such as sterile pouches and rigid containers. The sterilization process is simple and substantially avoids human errors caused by false interpretation and handling. The ozone sterilization method of the invention requires substantially no aeration or cooling down of sterilized instruments so that they can be used immediately following the sterilization cycle. This allows hospitals to reduce the cost of maintaining expensive medical device inventories.
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Patent Abstracts of Japan; vol. 1995, No. 08, Sep. 29, 1995 and JP 07 136236 A (Iwatate Iryo Kikai Seisakusho:KK), May 30, 1995, Abstract.
Dufresue Sylvie
Fournier Stephane
Robitaille Simon
Simard Mario
Turcot Richard
Akerman & Senterfitt
Chorbaji Monzer R.
Corcoran Gladys JP
Pendorf Stephan A.
TSO3 Inc.
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