Ethylene oxide sterilization process

Abstract

The invention discloses an ethylene oxide sterilization process, comprising the following steps: 1) anti-explosion pretreatment; 2) sterilization treatment: first filling a sterilization cabinet withgaseous ethylene oxide, and then filling nitrogen gas into the sterilization cabinet, while turning on the gas circulation system of the sterilization cabinet, so that the gas in the cabinet is uniformly distributed, and a to-be-sterilized product stands in the sterilization cabinet for 5-8 hours continuously; 3) sterilization post-treatment. In the above manner, the pre-explosion treatment is adopted to replace the oxygen gas in the sterilization cabinet to ensure that the ethylene oxide gas is out of an explosion limit; in the sterilization process, the gaseous ethylene oxide is filled withnitrogen gas and gas flows in a circulation manner via the gas circulation system, so that ethylene oxide can penetrate into a product better to improve sterilization effect; after sterilization, nitrogen cleaning and air cleaning are performed to remove the ethylene oxide gas in the cabinet, to avoid gas volatilization to affect the health of operators or an explosion caused by oxygen gas contactwith naked light during opening of the cabinet, capable of significantly improving the safety of sterilization of ethylene oxide.

Description

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AI Technical Summary

Benefits of technology

This technology helps reduce harm caused during the use of explosive gases for sterilation purposes while also improving its efficacy at killing germs effectively without causing damage on operators' hands or other parts exposed to it. It involves treatments like exploding beforehand, sterility processing, and post sterile cleanings to maintain their quality standards. Additionally, this method allows for efficient removal of residual ethylenic oxides (EO) due to the filling of nitrox instead of burning them down outside the cabinets.

Problems solved by technology

Technic problem: Existing ethylenoxide sterilation processes involve exposing operators' hands and clothes to harmful gases that could lead to fires or other accidents while opening cabinets for maintenance purposes. Additionally, current methods require excessively longer periods before reaching their maximum level without removing any residue from them, causing issues like unhealthiness or potential safety hazards.