Vaporized hydrogen peroxide concentration detector

A hydrogen peroxide, gas phase technology, applied in the field of sterilization and purification, can solve the problem of inability to know the quantity and so on

Inactive Publication Date: 2007-11-28
AMERICAN STERILIZER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, biological indicators must be incubated for several days to know the results of the test, while chemical indicators usually provide a visual indication (usually a color change), so when the indicator does not show a positive indication representing the presence of the sterilant, The operator needs to intervene to stop the operation of the sterilization decontamination cycle
Another disadvantage of chemical and biological indicators is that they only indicate the presence of vapor phase hydrogen peroxide (VHP), but not the amount

Method used

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  • Vaporized hydrogen peroxide concentration detector
  • Vaporized hydrogen peroxide concentration detector
  • Vaporized hydrogen peroxide concentration detector

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Embodiment Construction

[0038] Referring to the accompanying drawings, the illustrations therein are only for illustration, but not for limiting the preferred embodiments of the present invention. FIG. 1 is a gas phase hydrogen peroxide sterilization system 10 to illustrate a preferred embodiment of the present invention. System 10 includes a number of components operable to determine the presence and / or concentration of hydrogen peroxide, a two-component, vapor-phase sterilant, as will be described in a particular case hereinafter. Of course, the present invention also hopes to find favorable applications in other aspects of determining the concentration of multi-component, gas-phase sterilants.

[0039] In the embodiment shown in the drawings, the system 10 includes:

[0040] An isolator or space 22 that defines an interior sterilization chamber or region 24 . Items to be sterilized or decontaminated are to be placed in an isolator (space 22);

[0041] A vaporizer 32 (vaporizer, also referred to...

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Abstract

A vapor decontamination system for decontaminating a defined region. The system is comprised of a chamber defining a region, and a generator for generating vaporized hydrogen peroxide from a solution of hydrogen peroxide and water. A closed loop circulating system is provided for supplying the vaporized hydrogen peroxide to the region. A destroyer breaks down the vaporized hydrogen peroxide, and sensors upstream and downstream from the destroyer are operable to sense moisture in the system and provide electrical signals indicative thereof. A controller determines the presence of vaporized hydrogen peroxide in the region based upon the electrical signals from the sensors.

Description

technical field [0001] The present invention relates to a technique of sterilization and decontamination, in particular to a system for measuring the concentration of a gaseous or gaseous sterilant in a sterilization and purification system. Background technique [0002] Sterilization methods are widely used at many levels, and there are many types of sterilization materials used. The term "sterilization" as used herein refers to the deactivation of biological contaminants, especially inanimate objects. The term "disinfectant" refers to the inactivation of microbial pathogens. [0003] In order to achieve the sterility and decontamination assurance level of the target object, gaseous or gas phase sterilization / decontamination systems rely on the maintenance of certain process parameters. For the gas phase sterilization and purification system of hydrogen peroxide, these parameters include: concentration of hydrogen peroxide gas, degree of saturation, temperature, pressure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L9/00A61L2/00A62B7/08
CPCA61L2/24A61L2202/122A61L2/208A61L2202/14A61L2/20A61L2/00
Inventor 艾伦·L·希尔
Owner AMERICAN STERILIZER CO
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