Why Use Ethylene Oxide (EO) for Medical Device Sterilization?
Ethylene Oxide (EO) has become the industry standard for low-temperature sterilization. Its primary advantage lies in its exceptional material compatibility—it can effectively sterilize plastics, polymers, metals, and glass without the structural degradation caused by high-heat steam or radiation.
EO works through a chemical reaction called alkylation. It disrupts the DNA of bacteria, viruses, and molds, rendering them unable to reproduce. Unlike other methods, EO penetrates deep into complex geometries like long lumens and multi-layered packaging.
The 4 Critical Factors of Cycle Design
Designing a successful EO sterilization cycle requires a delicate balance of four adjustable parameters:
Validation & Compliance Standards
Before moving to production, manufacturers must conduct “worst-case” stability studies to ensure the cycle doesn’t adversely affect coatings, bonds, or functionality. Formal validation must align with:
- ISO 11135:2014: Sterilization of health care products — Ethylene oxide.
- ISO 10993-7:2008: Biological evaluation of medical devices — Part 7: Ethylene oxide sterilization residuals.
Precision Control with BOCON BCS Series
The flexibility of Ethylene Oxide sterilization technology is its greatest strength, but it requires equipment capable of exact parameter control. BOCON’s BCS Series ETO Sterilizers offer industry-leading precision in vacuum depth and humidity regulation. Whether you are sterilizing sensitive electronics or complex catheters, our systems ensure you meet SAL 10⁻⁶ while protecting your high-value materials.