Atmosphere cold plasma disinfection method

A technology of cold plasma and disinfection method, used in disinfection, sanitary equipment for toilets, water supply devices, etc., can solve the problems of complex operation, high cost, no chemical activity, etc. Effect

Inactive Publication Date: 2012-11-14
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

But this post-discharge area disinfection method also has its disadvantages, such as it can only work under low pressure, and under high pressure (such as atmospheric pressure), the active particles are quickly recombined due to frequent collisions with gas molecules, and reach the object to be processed through the transmission pipeline no longer chemically active
However, vacuum equipment is necessary to work under low pressure, which will bring the disadvantages of high cost and complicated operation mentioned above.

Method used

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Experimental program
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Embodiment Construction

[0025] The specific implementation method of the present invention is described in detail below in conjunction with the disinfection experiment process of Bacillus subtilis var. niger spores and Escherichia coli. The experimental work was carried out in accordance with the national standard of the People's Republic of China (GB15981-1995) on the evaluation methods and standards of disinfection and sterilization effects and the 2002 edition of the "Disinfection Technical Specifications" issued by the Ministry of Health of the People's Republic of China.

[0026] 1. Disinfection experiment process and results of Bacillus subtilis varietal spores

[0027] 1. Experimental Preparation

[0028] (1) Biosafety level II microbiological laboratory.

[0029] (2) Negative pressure biological safety cabinet (II).

[0030] (3) Constant temperature incubator.

[0031] (4) Biological microscope.

[0032] (5) Pressure steam sterilizer.

[0033] (6) Tested strain: Bacillus subtilis var. ni...

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Abstract

The invention provides an atmosphere cold plasma sterilizing method, and belongs to the technology field of plasma application. The invention is characterized in that the method comprises the following steps: pre-sterilizing a space where an object to be sterilized is positioned; selecting types of atmosphere cold plasma and determining working condition thereof; and placing the object to be sterilized in a discharge zone or a jet region of the selected atmosphere plasma for sterilizing. The atmosphere cold plasma can be one of atmosphere glow discharge cold plasma, atmosphere corona discharge cold plasma, atmosphere dielectric barrier discharge cold plasma, and atmosphere resistive barrier discharge cold plasma. The method has the advantages of no harmness to human body and environment, high sterilizing efficiency, wide types of discharge gas, etc.

Description

technical field [0001] The invention relates to a disinfection and sterilization method in the fields of medical treatment and public health, and the technical field of plasma application. Background technique [0002] The disinfection process refers to the reduction of a large number of pathogenic microorganisms, viruses or proteins present in the interior and exterior surfaces of the objects to be treated to below the specified survival rate or pathogenicity rate. Disinfection methods refer to the methods used in the disinfection process. These methods must effectively kill various microorganisms without endangering the object to be disinfected and the surrounding environment. The existing disinfection methods for medical and surgical instruments more or less have the disadvantages of low disinfection efficiency, endangering the sterilized object, complex operation, high cost and maintenance cost. [0003] In the field of medical and health care, disinfection is usually a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L2/14
Inventor 李和平李果王森包成玉邢新会王立言赵洪新
Owner TSINGHUA UNIV
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