Power of Parametric: Methods to Validate Ethylene Oxide Sterilization Parametric Release

Area of Science:

• Medical device sterilization
• Sterilization process validation

Background:

• Ethylene oxide (EO) sterilization validation traditionally relies on biological indicators (BIs) or parametric release.
• Parametric release, though accepted by ISO 11135:2014, is often perceived as complex and time-consuming.

Purpose of the Study:

• To demonstrate a streamlined approach to implementing parametric release for EO sterilization.
• To highlight the advantages of parametric release over BI monitoring.

Main Methods:

• A phased approach to parametric release validation: product definition, process definition, performance qualification, routine release, and process control.
• Discussion of establishing specifications from validation data versus "run and record" methods.
• Analysis of critical process parameters (e.g., humidity, temperature, EO concentration).

Main Results:

• Parametric release offers a more efficient and controlled validation process compared to BIs.
• Key benefits include improved turnaround time, enhanced process control, risk mitigation, reduced resource investment, and elimination of microbiological testing.
• Data collection and process capability in parametric release provide more powerful insights than passive BI monitoring.

Conclusions:

• Parametric release should be the gold standard for ethylene oxide sterilization processes due to its numerous benefits.
• The method is not novel and is globally accepted by regulatory agencies.
• Parametric release provides superior process understanding and control compared to biological indicators.