US Patent No: 5,872,359

Number of patents in Portfolio can not be more than 2000

Real-time monitor and control system and method for hydrogen peroxide vapor decontamination

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The invention includes a system and a method for maintaining a selected concentration of a sterilant vapor during vapor phase sterilization. The system includes a sterilization chamber with a source of multicomponent vapor containing a sterilant vapor, an electromagnetic radiation source capable of generating radiation at a plurality of wavelengths, a radiation detector for detecting and quantitating the electromagnetic radiation absorbed at the wavelengths, the detector generating absorbance signals proportional to the concentration of the sterilant vapor in the multicomponent vapor, a microprocessor programmed to compare the absorbance signals with reference absorbance signals, to calculate the sterilant vapor concentration therefrom and to generate an output signal, and a controller to receive the output signal and to control addition of the sterilant vapor to the sterilization chamber to maintain a selected concentration of the sterilant vapor in the sterilization chamber during the sterilization process. The method allows sterilization conditions to be optimized to reduce the time required for and to increase the sterilization efficacy of the sterilization procedure.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • AMERICAN STERILIZER COMPANY

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sparber, George Broadway, NC 1 38
Stewart, Bonnie Durham, NC 2 88
Zell, Peter Raleigh, NC 2 105

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (25)
* 4,323,777 Hydrocarbon gas analyzer 31 1980
* 4,641,973 Method and apparatus for measurement of the concentration of a component of a mixture 21 1982
* 4,661,320 Gas sensor 41 1984
* 4,664,522 Optical waveguide spectrum analyzer and method 25 1984
* 4,680,271 Process and apparatus for analysis 12 1985
* 4,786,171 Spectral analysis apparatus and method 41 1986
* 4,916,058 Method and test composition for determination of hydrogen peroxide 6 1987
* 4,843,867 System for monitoring sterilant vapor concentration 44 1987
* 4,956,145 Optimum hydrogen peroxide vapor sterilization method 88 1987
* RE33007 Method of vaporizing multicomponent liquids 21 1988
* 5,184,193 Dual fiber optic spectrophotometer 8 1989
* 4,909,999 Flow-through vapor phase sterilization system 69 1989
* 5,173,258 Recirculation, vapor and humidity control in a sealable enclosure 55 1989
* 5,167,927 Monitor for ozone, hydrogen peroxide and other gases in fluids 20 1989
* 5,055,690 Method of eliminating water vapor interference in detecting gases 8 1989
* 4,998,018 Two-wavelength type respiratory gas concentration measuring apparatus 31 1990
* 5,139,957 Chemical indicator that includes potassium dichromate and urea and method of using the same to detect hydrogen peroxide 26 1990
* 5,081,045 Chemical concentration pressure analyzing apparatus and process 13 1990
* 5,139,956 Method and system for determining peroxide content 11 1991
* 5,384,640 Gas sample chamber for use with a source of coherent radiation 17 1993
* 5,339,155 Optical wavelength modulated long-path gas monitoring apparatus 15 1993
* 5,445,792 Optimum hydrogen peroxide vapor sterlization method 80 1994
* 5,418,366 IR-based nitric oxide sensor having water vapor compensation 56 1994
* 5,475,222 Ruggedized gas detector 9 1994
* 5,600,142 Measurement of vaporized hydrogen peroxide 50 1995
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (66)
* 6,107,634 Decaborane vaporizer 30 1998
* 6,318,151 Self-contained sterilant monitoring assembly and method of using same 9 1999
7,090,808 Apparatus for testing sterilization methods and materials 7 2001
6,794,649 Spectrophotometric determination of gas phase compositions 6 2001
* 2003/0012,689 Apparatus for testing sterilization methods and materials 1 2001
* 2003/0030,010 Decaborane vaporizer having improved vapor flow 13 2001
* 2002/0122,744 Apparatus and method for monitoring of oxidative gas or vapor 3 2001
6,532,794 Self-contained sterilant monitoring assembly and method of using same 1 2001
7,157,046 High capacity flash vapor generation systems 7 2002
* 2002/0114,727 High capacity flash vapor generation systems 5 2002
7,186,374 Vapor phase decontamination of containers 23 2002
* 2003/0095,062 VEHICLE-ONBOARD SIGNAL PROCESSING DEVICE AND VEHICLE-ONBOARD RADAR SYSTEM 1 2002
7,803,315 Decontamination of surfaces contaminated with prion-infected material with gaseous oxidizing agents 4 2002
6,936,434 Vapor phase decontamination process biological indicator evaluator resistomer (BIER) vessel 17 2002
6,875,399 Non-dispersive mid-infrared sensor for vaporized hydrogen peroxide 16 2002
7,157,045 Infrared monitor and control for vapor hydrogen peroxide processing techniques 4 2002
* 2003/0021,724 Infrared monitor and control for vapor hydrogen peroxide processing techniques 2 2002
* 2003/0063,997 Monitoring sterilant concentration in a sterilization process 22 2002
7,129,080 Vitro model of priocidal activity 2 2002
* 2003/0148,385 Vitro model for priocidal activity 0 2002
* 2004/0013,777 Method and an apparatus for producing a gaseous medium 1 2002
7,807,100 Sterilization system and method with temperature-controlled condensing surface 6 2003
* 2005/0025,666 Sterilization system and method with temperature-controlled condensing surface 2 2003
7,071,152 Cleaning and decontamination formula for surfaces contaminated with prion-infected material 2 2003
* 2006/0105,930 CLEANING AND DECONTAMINATION FORMULA FOR SURFACES CONTAMINATED WITH PRION-INFECTED MATERIAL 0 2003
* 7,824,610 Plasma treatment module-equipped sterilization apparatus and sterilization method 0 2003
* 2004/0120,869 Plasma treatment module-equipped sterilization apparatus and sterilization method 2 2003
7,452,504 Sterilization/disinfection cycle control 3 2004
* 2005/0265,889 Sterilization/disinfection cycle control 0 2004
* 2005/0084,415 High capacity flash vapor generation systems 14 2004
* 7,145,052 Decontamination apparatus and methods 6 2004
* 2006/0270,887 DECONTAMINATION APPARATUS AND METHODS 7 2004
* 8,205,416 Method and device for producing and filling containers 0 2004
7,973,924 Target substance sensor and method thereof using a photonic crystal 1 2005
7,901,618 Integrated control and distribution system for the decontamination of large volume convoluted configuration spaces 0 2005
* 2007/0098,591 Method and apparatus for low energy vaporization of liquid oxidizing agents or solutions 6 2005
7,217,685 Cleaning and decontamination formula for surfaces contaminated with prion-infected material 4 2006
* 2007/0037,723 Cleaning and decontamination formula for surfaces contaminated with prion-infected material 4 2006
7,550,122 Decontamination system with air bypass 2 2006
* 2008/0279,719 DECONTAMINATION SYSTEM WITH AIR BYPASS 0 2006
7,700,056 Modular decontamination system 2 2006
* 2008/0038,166 MODULAR DECONTAMINATION SYSTEM 5 2006
* 2008/0163,562 Gutter cleaning system with an independent water supply 4 2007
* 8,236,240 Method and system for conducting vapor phase decontamination of sealable entities and their contents 4 2007
* 2007/0274,858 Method and system for conducting vapor phase decontamination of sealable entities and their contents 14 2007
7,393,818 Cleaning and decontamination formula for surfaces contaminated with prion-infected material 6 2007
* 2007/0289,614 Cleaning and decontamination formula for surfaces contaminated with prion-infected material 4 2007
7,919,059 Vaporized hydrogen peroxide decontamination system with concentration adjustment mode 2 2007
* 7,640,782 Vaporized hydrogen peroxide probe calibration rig 3 2007
* 2008/0267,818 VAPORIZED HYDROGEN PEROXIDE DECONTAMINATION SYSTEM WITH CONCENTRATION ADJUSTMENT MODE 7 2007
* 7,850,925 Apparatus for removal of vaporized hydrogen peroxide from a region 3 2007
* 2008/0310,997 METHOD AND APPARATUS FOR REMOVAL OF VAPORIZED HYDROGEN PEROXIDE FROM A REGION 4 2007
8,007,717 Method and apparatus for decontaminating a region without dehumidification 2 2007
* 2009/0047,174 METHOD AND APPARATUS FOR DECONTAMINATING A REGION WITHOUT DEHUMIDIFICATION 1 2007
* 2008/0279,736 Method and apparatus for low energy vaporization of liquid oxidizing agents or solutions 1 2008
7,575,716 Sterilization/disinfection cycle control 0 2008
8,230,616 Apparatus and method for drying and sterilizing objects in a load 0 2009
8,357,331 Feed back and dose control of distributed decontamination systems 3 2009
7,988,911 Method for removal of vaporized hydrogen peroxide from a region 3 2010
7,988,920 Device for aerating a region after injection with vaporized hydrogen peroxide 3 2010
* 2011/0052,449 DEVICE FOR AERATING A REGION AFTER INJECTION WITH VAPORIZED HYDROGEN PEROXIDE 3 2010
* 2011/0044,851 METHOD FOR REMOVAL OF VAPORIZED HYDROGEN PEROXIDE FROM A REGION 3 2010
9,241,510 Apparatus and method for optimizing and controlling food processing system performance 0 2012
8,893,518 Accelerating, optimizing and controlling product cooling in food processing systems 0 2012
9,131,729 Safe and efficient thermal transfer media for processing of food and drink products 0 2012
8,658,092 Sterilization system and method and orifice inlet control apparatus therefor 0 2013
* Cited By Examiner