Te Taipitopito EtO Sterilization Cycle

E toru nga waahanga matua o te huringa whakahoromata EtO:

Whakaritenga o mua

Ko tenei waahanga ka whakarite i te ruma ki te hanga i nga tikanga tino pai mo te mahana, te pehanga, me te makuku. Tuatahi, ka tukuna te hau ki te whakarei ake i te urunga hau, ka whai i te whakamatautau rerenga kia pai ai te haumaru mo nga kaimahi me te taiao. Ka werohia te mamaoa ki te whakamakuku i te kawenga, na te mea ka pai te mahi a EtO i nga ahuatanga makuku anake. Ka whakamahanahia te ruma ma te whakamahi i te hau wera, te wai wera ranei e rere ana i roto i te koti, ka mau tonu i te pāmahana kia kore ai e rere ke.

huringa whakahoromata EtO

I tenei wahanga, ka whakauruhia a EtO ki roto i te ruma ma te whakaetonga, me te mamaoa hei pupuri i te makuku. Kia tae ki te kukū e hiahiatia ana o EtO, ka timata te mahi whakahoromata. He roa ake nga wa whakahoromatatanga o nga hau hau iti. I te mea ka uru te EtO ki nga momo kirihou, he mea nui ki te aro turuki me te pupuri i nga taumata kukū tika puta noa i te mahi.

Whakaaetanga (Degassing)

Aeration is the longest and most critical part of the cycle. Materials like plastics and rubbers can absorb EtO, posing risks if used on patients. Thus, extensive aeration is essential to remove any residual gas. This is achieved by circulating HEPA-filtered air over the load at temperatures between 30°C and 50°C, typically for 48 hours, which can slow instrument turnaround. A dedicated infrastructure with gas-tight ventilation is required, as using the hospital’s ventilation system poses safety hazards. Regular gas leak tests on the ventilation piping are vital to minimize risks.

Advantages of EtO Sterilization:

Low temperature

High efficiency in destroying microorganisms, including resistant spores(1-120m³?

Large chamber capacity, accommodating significant volumes

Non-corrosive to plastics, metals, and rubber