Efficient Ethylene Oxide Sterilizer for industry fields

Introduction of EtO Sterilizers

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Ethylene oxide (EO) is a universally accepted sterilization technology that has delivered safe, sterile healthcare products for patient care since the 1960s.  However, with the use of ethylene oxide as a sterilant, human safety and environmental challenges must be considered.

As part of our commitment to providing innovative and sustainable solutions, Hangzhou Unique has developed the Sustainable EO sterilization services program. Our Sustainable EO services provide Customers with strategies to reduce the EO sterilant used in the sterilization process to achieve the prescribed Sterility Assurance Level.

Sterilization Cycle

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 There are at least three stages in a typical EtO sterilization cycle:

l  Preconditioning

l  Sterilization

l  Aeration (Degassing)

 Preconditioning

Preconditioning prepares the chamber environment to meet the ideal conditions for temperature, pressure and humidity. First air is removed from the chamber to allow for gas penetration. A leakage test is performed, to ensure that staff and environment are safe. Next, some steam is injected into the chamber and humidifies the load, since EtO is only effective in a humid environment. The chamber is heated by either steam or hot water which is present in the jacket. Normally the jacket is kept at the same temperature 24/7 to minimize temperature fluctuations.

Sterilization

The second stage is the actual sterilization process. The EtO enters the chamber via evaporation with a certain amount of steam to keep the humidity level up as well as to make sure the EtO is reaching all parts of the load. When the required concentration in the chamber and load is achieved the actual sterilization stage starts. The lower the gas concentration in the chamber the longer is the sterilization time.  As EtO is absorbed by many kinds of plastic materials it is important to keep the concentration at the right level. To achieve this EtO is sometimes added to the chamber after a while. It is of major importance to ensure the appropriate concentration level of EtO in the chamber to achieve effective and safe sterilization.

Aeration (Degassing)

Aeration is the most important and longest part of the EtO sterilization cycle. As mentioned, materials such as plastics and rubbers absorb gas and if applied to patients, the toxic gas could damage their body tissue! For this reason it is very important to have an excessive aeration stage to remove any remaining EtO gas and to allow absorbed gas to evaporate again from the sterilized items. This is done by circulating HEPA filtered air over the load at a temperature of 30°C to 50°C. This is sometimes done in the sterilizer’s chamber, but sometimes the sterilized items are placed in a special aeration cabinet. If the sterilized items are repositioned from the chamber to the aeration cabinet then strict safety precautions should be in place to prevent EtO gas exposure to the people who perform this function.  A commonly used time period for this aeration treatment is 48 hours which results in a very slow instrument turnaround. A special infrastructure is required, with gas tight ventilation piping to the roof top or to a catalyzer. The sterilizer cannot use the hospital's ventilation system because it is too dangerous. The special ventilation piping has to be tested for gas leaks all the way as this is the only way to minimize the risks.

Technical Specifications

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Package and Shipment

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● Package details: Wooden crate pallet plus foam board and bubble film, Full closed wooden case. 1pcs/each package (for stationary EtO sterilizer);

● Transportations: sea transport, rail transport, air transport, road transport, LCL/ FCL container transport or as requested;

● Trade terms: FOB, CFR, CIF and EXW, DDP, etc.

● Delivery time: in 60 days after receiving deposit (customized machines not included).

  Factory

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Honor certificates

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Contacts

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Hangzhou Unique Disinfection Equipment Co., Ltd.

Add: No. 220, Zhangshan Road, Renhe Street, Yuhang District, Hangzhou

Email: sales@unqxd.com

Website: www.unqxd.com

Tel: 86-571-88781298