Hydrogen peroxide plasma sterilizer and sterilizing method thereof

Abstract

The invention relates to a hydrogen peroxide plasma sterilizer which comprises a sterilizing cabin, a vacuum system, a liquid feed system, a plasma generator, an air inlet system and a control system, wherein the sterilizing cabin is used for accommodating a sterilizing object; the vacuum system is used for emptying gas in the sterilizing cabin; the liquid feed system is used for filling a hydrogen peroxide sterilizing agent containing water into the sterilizing cabin; the plasma generator is used for exciting a content of the sterilizing cabin to be in a plasma state within a period of a sterilizing circle; the air inlet system allows abacterial air to enter the sterilizing cabin to break the vacuum of the sterilizing cabin; and the control system is used for controlling components of the sterilizer, so that the sterilizer can carry out sterilizing works as a set program. The hydrogen peroxide plasma sterilizer is characterized by also comprising an evaporator used for purifying the hydrogen peroxide sterilizing agent containing water, vaporizing the purified hydrogen peroxide sterilizing agent and conveying the hydrogen peroxide sterilizing agent to the sterilizing cabin for sterilizing. The evaporator can purify the lower-concentration hydrogen peroxide sterilizing agent containing water which is convenient for storage and transport into a high-concentration hydrogen peroxide sterilizing agent, and water is basically removed from the system, thus the sterilizer can sterilize more quickly, sufficiently and effectively.

Description

technical field [0001] The invention belongs to the field of medicine, and relates to a disinfection and sterilization device for materials or objects, and more specifically relates to a hydrogen peroxide plasma sterilizer. method. Background technique [0002] A commonly used method of sterilizing medical devices is to contact the device with a vapor phase chemical sterilant such as hydrogen peroxide. In many of these sterilizers, it is preferred to deliver the sterilant in liquid form and vaporize or ionize it into a plasma within the sterilizer for sterilization purposes. Sterilization using plasma is a recent technique for decontaminating surgical equipment that has many advantages. The plasma state of the material is obtained by discharge in a low-pressure gas, in a high-voltage electric field, in DC, AC or pulsed electric fields. The action of this electric field on the gas or vapor molecules provides sufficient energy to the charged particles (electrons and ions) a...

AI Technical Summary

Problems solved by technology

The advantage of this system is that water and hydrogen peroxide vapor are pushed into the chamber due to the pressure difference that exists, increasing the rate of sterilization of said chamber, but the disadvantage is the need to attach said container to each chamber to be sterilized. cavity

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