¿Por qué utilizar óxido de etileno? (OE) Para esterilizar dispositivos médicos

Hora de publicación: 2024-01-18 | Categoría: Sterilization Science & Material Compatibility

¿Por qué utilizar óxido de etileno? (OE) for Esterilización de dispositivos médicos?

Óxido de etileno (OE) has become the industry standard for esterilización a baja temperatura. Its primary advantage lies in its exceptional material compatibility—it can effectively sterilize plastics, polímeros, metals, and glass without the structural degradation caused by high-heat steam or radiation.

The Mechanism: Alkylation

EO works through a chemical reaction called alquilación. It disrupts the DNA of bacteria, virus, and molds, rendering them unable to reproduce. Unlike other methods, EO penetrates deep into complex geometries like long lumens and multi-layered packaging.

El 4 Critical Factors of Cycle Design

Designing a successful Ciclo de esterilización con OE requires a delicate balance of four adjustable parameters:

Temperatura Typically 90°F to 135°F. $$+18^\circ F = 2x \text{ Letalidad}$$ Higher temps reduce residue and aeration time.

Humedad Water vapor increases material porosity. Relative humidity (RH) should be >30% for consistent microbial deactivation.

Vacuum Depth Essential for gas penetration. Deep vacuum pulses ensure EO reaches the innermost surfaces of complex devices.

Concentración de AE Optimized between 400 mg/L and 800 mg/L. Balancing lethality with minimal residual levels is key.

Validación & Estándares de cumplimiento

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: Evaluación biológica de dispositivos médicos. Parte 7: Residuos de esterilización con óxido de etileno.

Precision Control with BOCON BCS Series

The flexibility of Tecnología de esterilización con óxido de etileno. is its greatest strength, but it requires equipment capable of exact parameter control. BOCON Esterilizadores ETO serie BCS 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.