Explosion-proof ethylene oxide sterilization pretreatment process

A technology of ethylene oxide and pretreatment, which is applied in chemistry and other fields, can solve the problems of long sterilization time, low sterilization efficiency, and the presence of oxygen, so as to improve the sterilization effect, increase the sterilization efficiency, and avoid explosions. Effect

Inactive Publication Date: 2019-05-28
常熟荣瑞灭菌技术有限公司
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Problems solved by technology

However, since ethylene oxide is a flammable, explosive and toxic gas, it is easy to volatilize at room temperature, and can cause an explosion when the concentration is too high
The ethylene oxide sterilization technology used in the existing medical device sterilization is based on the sterilization process directed by the sterilizer manufacturer, and the explosion-proof measures for the pre-sterilization treatment are mainly through vacuuming the sterilizer before adding EO However, this method has high requirements for vacuuming, and there will be problems such as long sterilization time and low sterilization efficiency due to long vacuuming time, and there will also be a certain amount of oxygen in the cabinet after vacuuming. Problems, resulting in the concentration of EO gas in the cabinet may reach the explosion range and there is a safety hazard of explosion

Method used

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Embodiment Construction

[0020] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0021] Embodiments of the invention include:

[0022] An explosion-proof ethylene oxide sterilization process, comprising the steps of:

[0023] 1) Preheating: Put the product to be sterilized in the preheating room, preheat for 18~24 hours under the process conditions of the temperature of the preheating room is 43~53°C and the humidity is 30~80%RH, and then transfer the product to into the sterilizer;

[0024] 2) Heating and vacuuming: Turn on the heating system to keep the temperature inside the sterilizer between 43 and 53°C, then start the vacuum pump to pump the pressure inside the sterilizer to -60Kpa, keep the pressure for 13 minutes, then turn off the vacuum pump, and observe the steri...

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Abstract

The invention discloses an explosion-proof ethylene oxide sterilization pretreatment process. The process comprises the steps that firstly, a product to be sterilized is preheated in a preheating chamber and transferred into a sterilization cabinet after preheating is ended; secondly, the sterilization cabinet is sequentially subjected to heating, vacuumizing, nitrogen displacement, humidifying, moisturizing, medicating and nitrogen filling; and finally, the product to the sterilized is kept sterilized for a certain period of time in the sterilization cabinet. According to the process, two steps of the nitrogen displacement and the nitrogen filling are added compared with an existing ethylene oxide sterilization pretreatment process; residual oxygen after vacuuming the sterilization cabinet is replaced by nitrogen, so that ethylene oxide gas out of an explosion limit is ensured, and occurrence of explosion is avoided; meanwhile, the vacuuming time and sterilization time are shortened,so that the sterilization efficiency is improved; in addition, nitrogen filling is carried out after medicating to enable the ethylene oxide to penetrate into the product better, so that the sterilization effect and the sterilization efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of sterilization of medical instruments, in particular to an explosion-proof ethylene oxide sterilization pretreatment process. Background technique [0002] Ethylene oxide (EO), also known as ethylene oxide, has the advantages of strong penetrating power, wide sterilization spectrum, no damage to articles, and reliable sterilization effect, so it is widely used in the sterilization of medical devices and articles. However, since ethylene oxide is a flammable, explosive and toxic gas, it is easy to volatilize at room temperature, and can cause an explosion when the concentration is too high. The ethylene oxide sterilization technology used in the existing medical device sterilization is based on the sterilization process directed by the sterilizer manufacturer, and the explosion-proof measures for the pre-sterilization treatment are mainly through vacuuming the sterilizer before adding EO However, this meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L2/20A61L101/44
Inventor 朱仪兵王佳怡
Owner 常熟荣瑞灭菌技术有限公司
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