EP1935515A2 - Système de décontamination d'une installation - Google Patents

Système de décontamination d'une installation Download PDF

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Publication number
EP1935515A2
EP1935515A2 EP07150015A EP07150015A EP1935515A2 EP 1935515 A2 EP1935515 A2 EP 1935515A2 EP 07150015 A EP07150015 A EP 07150015A EP 07150015 A EP07150015 A EP 07150015A EP 1935515 A2 EP1935515 A2 EP 1935515A2
Authority
EP
European Patent Office
Prior art keywords
facility
decontaminant
decontamination system
liquid
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07150015A
Other languages
German (de)
English (en)
Other versions
EP1935515A3 (fr
Inventor
Michael William Aitchison
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BIO DECONTAMINATION LIMITED
Original Assignee
Validated Hygiene Solutions Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Validated Hygiene Solutions Ltd filed Critical Validated Hygiene Solutions Ltd
Publication of EP1935515A2 publication Critical patent/EP1935515A2/fr
Publication of EP1935515A3 publication Critical patent/EP1935515A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks

Definitions

  • the present invention relates to systems for decontaminating sterile facilities such as clean rooms, sterile cabinets and ventilated cabinets for pharmaceuticals and biohazards.
  • the present invention also relates to a method of decontaminating sterile facilities.
  • a number of procedures are recommended. These include disinfecting all materials before taking them into the facility, requiring personnel entering/leaving/accessing the facility to wear appropriate apparel, minimising the amount of paper used within the facility, ensuring that disinfectants are sterile, and staff training. However, it is still necessary from time to time to clean and sterilise the facility. This entails cleaning operatives washing the facility with cloths, mops and buckets of chemical to clean down all the inside surfaces of the facility.
  • a mobile sterilisation unit is positioned in the facility. The mobile sterilisation unit sprays a dry fog of hydrogen peroxide into the facility which disperses over all of the inside surfaces to disinfect and sterilise these.
  • the mobile sterilisation unit is removed from the facility.
  • the sterilisation process is validated using biological indicators (Geobacillus stearothermophilus). Cultures of these are placed in the facility and exposed to the disinfection, after which they are cultured in a suitable media and under appropriate recovery conditions as specified by the manufacturer. If no growth occurs, the disinfection process is deemed to have worked.
  • the conventional method of cleaning and sterilising a facility requires both cleaning operatives and their equipment to enter and leave the facility on a number of occasions. Each time this takes place there is a risk of contamination, from both the operatives and from the equipment they use. Furthermore, the conventional mobile sterilisation unit employed to spray hydrogen peroxide into the facility requires a pressurised air supply. This too can represent a potential source of contamination.
  • a facility decontamination system comprising at least one nozzle permanently sited within the facility, a liquid aerosol dispenser located outside the facility and means for coupling the external liquid aerosol dispenser to the said at least one nozzle, the liquid aerosol dispenser means comprising reservoir means containing a liquid decontaminant and propellant means for expelling the liquid decontaminant from the reservoir means through the said at least one nozzle into the facility.
  • the liquid aerosol dispenser means is adapted to dispense a plurality of different decontaminant liquids, sequentially, through the at least one nozzle into the facility.
  • the reservoir means may comprise a single container and may be adapted to receive, sequentially, a plurality of different decontaminants.
  • the plurality of decontaminant liquids may be held in separate containers and the system may further comprise valve means for connecting propellant means sequentially to the plurality of decontaminant liquids.
  • the system comprises means for operating the propellant means for a predetermined period after the reservoir means has been emptied of decontaminant liquid, in order to clear the container, the coupling means and the said at least one nozzle of the decontaminant liquid.
  • the liquid may comprise a detergent, for example an enzyme-based detergent.
  • the decontaminant liquid may comprise a disinfectant, such as hydrogen peroxide and/or peracetic acid.
  • the decontaminant liquid may also comprise a substance to neutralise the disinfectant.
  • the system also comprises means for evacuating the decontaminant vapour from the facility.
  • the means for evacuating the decontaminant vapour from the facility may comprise an air management system.
  • the system may further comprise filter or trap means through which the decontaminant vapour is discharged.
  • the filter or trap means may comprise a substance which reacts with the decontaminant vapour.
  • a valve means is located between the facility and the filter or trap means.
  • the system further comprises control means for selectively controlling the supply of decontaminant liquid to the said at least one nozzle and for controlling the propellant means.
  • the said at least one nozzle produces a dry fog within the facility.
  • the present invention also includes a sterile facility comprises a facility decontamination system in accordance with the present invention.
  • a method of decontaminating a sterile facility comprising:
  • a plurality of decontaminants are dispensed, sequentially, through the said at least one nozzle into the facility.
  • the decontaminant liquid may comprise a detergent, for example an enzyme-based detergent.
  • the decontaminant liquid may comprise a disinfectant, for example hydrogen peroxide and/or peracetic acid.
  • the decontaminant liquid may also comprise a substance to neutralise the disinfectant.
  • the decontaminant vapour is evacuated from the facility via an air management system.
  • the decontaminant vapour may be discharged through a filter or trap means.
  • the filter or trap means may comprise a substance which reacts with the decontaminant vapour.
  • the system comprises one or more nozzles 10 which are permanently sited within a clean room 12.
  • the nozzle or nozzles 10 is/are are so positioned within the clean room as to ensure that material sprayed therefrom reaches the entire volume of the clean room and all or substantially all of the internal surfaces of the clean room.
  • Each of the nozzles 1 is coupled to a liquid aerosol dispenser 14 via a valve 16, the dispenser comprising reservoir means (not shown) for containing liquid decontaminants such as liquid detergent and liquid disinfectant and a neutraliser for liquid disinfectant.
  • the liquid aerosol dispenser 14 also comprises propellant means 16 in the form of an air compressor or compressed gas cylinders or the like for dispelling liquid from the reservoir means through the or each of the nozzles 10 into the clean room.
  • the supply of compressed gas to the liquid aerosol dispenser is controlled by a valve 18.
  • the compressed gas is also supplied directly to the nozzle or nozzles 10 through a separate supply line 20 via a further regulating valve 22, in order to produce a dry fog of the liquid decontaminant, as will be explained.
  • the reservoir means may comprise a single container which can be filled with decontaminant liquid and is discharged into the clean room until the container is emptied. If more than one decontaminant liquid is to be used, each one may in turn be loaded into the reservoir means and discharged. Alternatively, the reservoir means may comprise two or more such containers and the propellant means is switched between them.
  • the nozzles 10 function in the usual way, expelling liquid from the container 3 under pressure from the propellant means through a nozzle outlet to form a fine mist or aerosol inside the clean room.
  • the propellant means 16 is operated for a further predetermined period to clear the lines coupling the aerosol dispenser 14 to the nozzle or nozzles 10 (and to clear the nozzle or nozzles themselves) and prevent contamination if a further liquid is introduced.
  • the system further comprises control means 24, illustrated schematically, for controlling and regulating operation of the liquid aerosol dispenser 14, the propellant means 16 and the valves 16, 18, 22.
  • the control means 24, which may conveniently be a programmed microprocessor, controls the operation of the liquid aerosol dispenser 14 to selectively supply liquid decontaminant material and air or gas to the nozzle or nozzles 10 as will be described hereinafter.
  • the facility decontamination system may be operated to discharge one, or more than one, decontaminant liquid into the clean room 10.
  • a decontamination cycle may comprise:
  • the cycle may comprise, sequentially:
  • a liquid decontaminant is discharged into the room, it is discharged as a non-wetting mist or dry fog.
  • the droplets or liquid in a dry fog are very small, typically 10 microns or less in diameter, and tend to bounce off surfaces. Droplets of liquid larger than this tend to burst on contact with a surface and wet the surface.
  • the propellant means 16 is operated for a further predetermined period to clear the lines coupling the aerosol dispenser to the nozzles and to clear the nozzle itself, and to prevent contamination if a further liquid is to be discharged.
  • the dry fog of liquid contaminant is allowed to remain in the clean room for a length of time sufficient for it to carry out its purpose, for example, cleaning the surfaces of the room if a detergent is used carrying out effective sterilisation of the interior surfaces of the clean room if a disinfectant is used and neutralising the disinfectant if a neutralising agent is used.
  • the air management system (under the control of the control means 24) is operated after the or each dry mist or fog has been allowed to remain in the clean room for the require period of time.
  • the dry mist or fog may be evacuated through a filter or trap means 28 connected to an external fan 30 under the control of the control means 24.
  • a valve 32 is interposed between the clean room and the filter means, and is also under the control of the control means 24.
  • the filter means may comprise an adsorbent material such as activated charcoal to absorb the vapour being evacuated, or may comprise a substance which reacts with the vapour being evacuated.
  • the filter or trap means may comprise a solution of potassium permanganate which reacts with the hydrogen peroxide and neutralises it. If a filter 28 is provided, then it may not be necessary to discharge a neutralising substance into the clean room to neutralise the disinfectant vapour. Effectively, the neutralisation takes place upon evacuation of the disinfectant vapour, which can considerably reduce the length of time of the decontamination cycle.
  • the facility decontamination system of the present invention is less expensive than conventional mobile systems. Once the nozzles have been installed in a clean room the only major on-going cost lies in the cleaning chemicals.
  • the liquid aerosol dispenser which is coupled to the nozzles can be employed with a number of clean rooms being connected up whenever a clean room requires to be cleaned and disconnected afterwards.
  • the invention is not restricted to the details of foregoing embodiment.
  • the embodiment has been described with reference to a clean room, the invention is equally applicable to other sterile facilities such as sterile cabinets, ventilated cabinets and the like.
  • control means Although the embodiment as described is operated by the control means, it would be possible to dispense with the control means and operate the various components of the system manually, if desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
EP07150015A 2006-12-13 2007-12-13 Système de décontamination d'une installation Withdrawn EP1935515A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0624773A GB0624773D0 (en) 2006-12-13 2006-12-13 A facility decontaminaton system

Publications (2)

Publication Number Publication Date
EP1935515A2 true EP1935515A2 (fr) 2008-06-25
EP1935515A3 EP1935515A3 (fr) 2011-03-02

Family

ID=37711981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07150015A Withdrawn EP1935515A3 (fr) 2006-12-13 2007-12-13 Système de décontamination d'une installation

Country Status (2)

Country Link
EP (1) EP1935515A3 (fr)
GB (1) GB0624773D0 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7659824B2 (en) 2006-10-31 2010-02-09 Resurgent Health & Medical, Llc Sanitizer dispensers with compliance verification
DE102008041521A1 (de) * 2008-08-25 2010-03-04 Robert Bosch Gmbh Vorrichtung mit abgeschlossenem Arbeitsraum mit verbesserter Reinigungsmöglichkeit
US7698770B2 (en) 2006-10-31 2010-04-20 Resurgent Health & Medical, Llc Automated appendage cleaning apparatus with brush
US7754021B2 (en) 2006-10-31 2010-07-13 Resurgent Health & Medical, Llc Wash chamber for appendage-washing apparatus
US7818083B2 (en) 2006-10-31 2010-10-19 Resurgent Health & Medical, Llc Automated washing system with compliance verification and automated compliance monitoring reporting
WO2011007341A1 (fr) * 2009-07-17 2011-01-20 Matteo Longo Hotte à flux laminaire
NO20100104A1 (no) * 2010-01-21 2011-06-27 Rofisk As System for rengjøring av i det minste et lukket rom, fremgangsmåte for rengjøring av et lasterom på et fartøy, og bruk av vannringskompressor på et fartøy
EP2424348A1 (fr) * 2009-04-30 2012-03-07 Bakteriefritt AS Composition pour la stérilisation de surfaces
US8146613B2 (en) 2008-04-29 2012-04-03 Resurgent Health & Medical, Llc Wash chamber for surgical environment
US20120125197A1 (en) * 2010-11-22 2012-05-24 Ethicon, Inc. Decontamination apparatuses and methods
WO2012173756A1 (fr) * 2011-05-27 2012-12-20 Minntech Corporation Système de décontamination comprenant un contrôle environnemental utilisant une substance décontaminante
US8821807B2 (en) 2009-12-03 2014-09-02 Medivators Inc. Container and system for decontaminating a medical device with a fog
US8889081B2 (en) 2009-10-15 2014-11-18 Medivators Inc. Room fogging disinfection system
WO2020012125A2 (fr) 2018-07-11 2020-01-16 Commissariat A L'energie Atomique Et Aux Energies Alternatives Procede de decontamination d'un milieu gazeux contamine par des especes contaminantes en suspension.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020021985A1 (en) * 2000-06-20 2002-02-21 Peterson Carl R. Electrostatically charged aerosol decontamination system and method
WO2003101498A2 (fr) * 2001-11-02 2003-12-11 Pure 03 Tech, Inc Systeme de decontamination pour agents chimiques et biologiques
US20040096354A1 (en) * 2002-11-18 2004-05-20 Shinnosuke Nomura Ozone deodorizing and sterilizing method and device
US20040184950A1 (en) * 2003-01-31 2004-09-23 Steris Inc. Building decontamination with vaporous hydrogen peroxide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020021985A1 (en) * 2000-06-20 2002-02-21 Peterson Carl R. Electrostatically charged aerosol decontamination system and method
WO2003101498A2 (fr) * 2001-11-02 2003-12-11 Pure 03 Tech, Inc Systeme de decontamination pour agents chimiques et biologiques
US20040096354A1 (en) * 2002-11-18 2004-05-20 Shinnosuke Nomura Ozone deodorizing and sterilizing method and device
US20040184950A1 (en) * 2003-01-31 2004-09-23 Steris Inc. Building decontamination with vaporous hydrogen peroxide

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7789095B2 (en) 2006-10-31 2010-09-07 Resurgent Health & Medical, Llc Wash chamber for automated appendage-washing apparatus
US7659824B2 (en) 2006-10-31 2010-02-09 Resurgent Health & Medical, Llc Sanitizer dispensers with compliance verification
US7818083B2 (en) 2006-10-31 2010-10-19 Resurgent Health & Medical, Llc Automated washing system with compliance verification and automated compliance monitoring reporting
US7698770B2 (en) 2006-10-31 2010-04-20 Resurgent Health & Medical, Llc Automated appendage cleaning apparatus with brush
US7754021B2 (en) 2006-10-31 2010-07-13 Resurgent Health & Medical, Llc Wash chamber for appendage-washing apparatus
US7754022B2 (en) 2006-10-31 2010-07-13 Resurgent Health & Medical, Llc Wash chamber for appendage-washing method
US7757700B2 (en) 2006-10-31 2010-07-20 Resurgent Health & Medical, Llc Wash chamber for automated appendage-washing apparatus
US7758701B2 (en) 2006-10-31 2010-07-20 Resurgent Health & Medical, Llc Wash chamber for automated appendage-washing apparatus
US7682464B2 (en) 2006-10-31 2010-03-23 Resurgent Health & Medical, Llc Automated washing system with compliance verification
US8110047B2 (en) 2006-10-31 2012-02-07 Resurgent Health & Medical, Llc Automated washing system with compliance verification
US7883585B2 (en) 2006-10-31 2011-02-08 Resurgent Health & Medical, Llc Wash chamber for appendage-washing method
US8085155B2 (en) 2006-10-31 2011-12-27 Resurgent Health & Medical, Llc Sanitizer dispensers with compliance verification
US7901513B2 (en) 2006-10-31 2011-03-08 Resurgent Health & Medical, LLC. Wash chamber for appendage-washing method
US7993471B2 (en) 2006-10-31 2011-08-09 Barnhill Paul R Wash chamber for automated appendage-washing apparatus
US8294585B2 (en) 2008-04-29 2012-10-23 Resurgent Health & Medical, Llc Complete hand care
US8377229B2 (en) 2008-04-29 2013-02-19 Resurgent Health & Medical, Llc Ingress/egress system for hygiene compliance
US8400309B2 (en) 2008-04-29 2013-03-19 Resurgent Health & Medical, Llc Hygiene compliance
US8146613B2 (en) 2008-04-29 2012-04-03 Resurgent Health & Medical, Llc Wash chamber for surgical environment
DE102008041521A1 (de) * 2008-08-25 2010-03-04 Robert Bosch Gmbh Vorrichtung mit abgeschlossenem Arbeitsraum mit verbesserter Reinigungsmöglichkeit
EP2424348A1 (fr) * 2009-04-30 2012-03-07 Bakteriefritt AS Composition pour la stérilisation de surfaces
CN102548396A (zh) * 2009-04-30 2012-07-04 贝克特里弗里特公司 用于表面消毒的组合物
WO2011007341A1 (fr) * 2009-07-17 2011-01-20 Matteo Longo Hotte à flux laminaire
US9511162B2 (en) 2009-10-15 2016-12-06 Mar Cor Purification, Inc. Room fogging disinfection system and method
US8889081B2 (en) 2009-10-15 2014-11-18 Medivators Inc. Room fogging disinfection system
US9439991B2 (en) 2009-12-03 2016-09-13 Medivators Inc. Container and system for decontaminating a medical device with a fluid
US8821807B2 (en) 2009-12-03 2014-09-02 Medivators Inc. Container and system for decontaminating a medical device with a fog
NO20100104A1 (no) * 2010-01-21 2011-06-27 Rofisk As System for rengjøring av i det minste et lukket rom, fremgangsmåte for rengjøring av et lasterom på et fartøy, og bruk av vannringskompressor på et fartøy
WO2011090392A2 (fr) 2010-01-21 2011-07-28 Rofisk As Système de nettoyage
CN103221073A (zh) * 2010-11-22 2013-07-24 伊西康公司 净化设备和方法
US20120125197A1 (en) * 2010-11-22 2012-05-24 Ethicon, Inc. Decontamination apparatuses and methods
CN103702689A (zh) * 2011-05-27 2014-04-02 麦迪维特斯有限公司 包括使用净化物质的环境控制的净化系统
WO2012173756A1 (fr) * 2011-05-27 2012-12-20 Minntech Corporation Système de décontamination comprenant un contrôle environnemental utilisant une substance décontaminante
US9017607B2 (en) 2011-05-27 2015-04-28 Medivators Inc. Decontamination system including environmental control using a decontaminating substance
US9402929B2 (en) 2011-05-27 2016-08-02 Mar Cor Purification, Inc. Decontamination system including environmental control using a decontaminating substance
WO2020012125A2 (fr) 2018-07-11 2020-01-16 Commissariat A L'energie Atomique Et Aux Energies Alternatives Procede de decontamination d'un milieu gazeux contamine par des especes contaminantes en suspension.
FR3083712A1 (fr) 2018-07-11 2020-01-17 Commissariat A L'energie Atomique Et Aux Energies Alternatives Procede de decontamination d'un milieu gazeux contamine par des especes contaminantes en suspension.
JP2021524375A (ja) * 2018-07-11 2021-09-13 コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ 浮遊汚染種によって汚染された気体媒体を除染するための方法

Also Published As

Publication number Publication date
GB0624773D0 (en) 2007-01-17
EP1935515A3 (fr) 2011-03-02

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