Device for sterilizing with gaseous plasma formed from a mixture of nitrogen and hydrogen

A technology of disinfection chamber and heating device, applied in disinfection, water supply devices, sanitary equipment for toilets, etc.

Inactive Publication Date: 2008-02-13
SOC POUR LA CONCEPTION DES APPL DES TECHN ELECTRONIQUES SATELEC
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  • Abstract
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AI Technical Summary

Problems solved by technology

Although the disinfection function by ultraviolet radiation is meaningful in improving the disinfection ability of the device, this disinfection function has a serious disadvantage in that the ultraviolet radiation further increases the harshness of the fragile parts of the appliance.
[0013] However, vacuum pumps of the so-called "industrial" type have the disadvantage of not

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  • Device for sterilizing with gaseous plasma formed from a mixture of nitrogen and hydrogen
  • Device for sterilizing with gaseous plasma formed from a mixture of nitrogen and hydrogen

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Embodiment Construction

[0038] Fig. 1 shows very briefly the gas plasma disinfection device of the present invention. The device comprises an inlet pipe 1 for a gas flow containing a mixture of nitrogen and hydrogen passing through a vacuum box subject to the action of an electric field generator formed by a microwave generator 3 at 2.45 GHz, the microwave The power of the generator is regulated by the control device 5 . The post-discharge gas produced by the plasma generated (in a known manner) enters the processing chamber 7 through a conduit 9 . The processing chamber 7 is arranged in the area after the plasma discharge, and is connected with a vacuum pump 11 . The pump drives the discharged gas into the process chamber 7 and ensures that the gas is discharged outwards through a pipe 13 provided with a suitable filter 15 .

[0039] The treatment chamber 7 comprises a metal tray 17 for carrying objects 19 to be sterilized.

[0040] The disc 17 is provided with a heating device 21 whose temperature...

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Abstract

The invention concerns a method for sterilizing objects (19), in particular medical or surgical instruments, which consists in subjecting a gas stream circulating in a chamber wherein an industrial vacuum is created to the action of an electric field so as to create a gaseous plasma whereof the post-discharge stream which is derived therefrom is admitted into a sterilizing chamber where it is contacted with the surface of the objects to be treated. Said device is characterized in that the gas stream consists of a mixture of nitrogen, and of an amount of hydrogen less than 5 %. It comprises means for heating said objects capable of bringing the latter, during treatment, to a temperature not less than 60 DEG C. The invention also concerns a method using said device.

Description

technical field [0001] The invention relates to a disinfection and cleaning device, in particular to a disinfection and cleaning device for medical or surgical instruments or devices. The invention also relates to a method for realizing the device. Background technique [0002] As is known, the disinfection process involves the destruction, in proportions prescribed by the Pharmacopoeia, of a large number of pathogenic microorganisms, viruses or proteins present on the internal or external surfaces of the items to be treated. There are many existing methods to achieve this result in a more or less satisfactory manner. [0003] In the medical field, sterilization is usually achieved by means of an autoclave, in which the instruments to be sterilized are heated to a predetermined high temperature of about 120° C. for a predetermined period of time with a period prescribed by legislation. It should first be noted that autoclaves are limited to the disinfection of small-volume...

Claims

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Application Information

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IPC IPC(8): A61L2/14
CPCA61L2/14
Inventor 安德烈·里卡尔弗朗西斯·迪耶拉米歇尔·西克苏山德里尼·维莱热
Owner SOC POUR LA CONCEPTION DES APPL DES TECHN ELECTRONIQUES SATELEC
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