Over the past few decades, there has been a significant increase in the use of materials that require low temperature sterilization for medical devices and instruments.
This trend is driven by various factors such as advancements in medical technology, the development of new materials, and the need for more effective sterilization methods to ensure patient safety.
Among the different methods choices of low temperature sterilization technologies, there are systems using Ethylene Oxide (EtO), Formaldehyde (FO), Paracetic Acid (PAA) and Hydrogen Peroxide (H2O2).1
Several of these technologies pose potential hazards to both patients and staff, along with extended cycle times and increased costs and resource requirements.
A hydrogen peroxide and water solution (59% nominal hydrogen peroxide by weight) is introduced into the sterilizer, where it undergoes further concentration.
Subsequently, this concentrated hydrogen peroxide solution is vaporized into gas and transferred into the chamber, enveloping the devices and creating a biocidal environment that deactivates microorganisms through chemical interactions. This process involves the application of a strong electrical field, generating hydrogen peroxide gas plasma.
The plasma consists of highly energized species, forming a 'cloud' within the chamber. Once the electrical field is deactivated, these energized species recombine, converting the hydrogen peroxide back into harmless water and oxygen molecules.2
Compared to Ethylene Oxide (EtO) and Formaldehyde (FO), hydrogen peroxide (H2O2) presents advantages as a non-carcinogenic and non-mutagenic sterilant. Additionally, when used as gas plasma, it breaks down into non-toxic by-products, ensuring the safety of patients and staff by minimizing exposure to health risks.3
Learn how our STERRAD™ System use the gas plasma technology.
References
References
Guideline for Disinfection and Sterilization in Healthcare Facilities, 2008. Centers for Disease and Control Prevention.