Overview - ISO 17665:2024 (Moist heat sterilization)
ISO 17665:2024, "Sterilization of health care products - Moist heat - Requirements for the development, validation and routine control of a sterilization process for medical devices," defines requirements and guidance for establishing reliable moist heat sterilization processes. The standard covers both saturated steam and contained product sterilization approaches and is intended for use in industrial and health care settings to ensure reproducible microbicidal effectiveness for medical devices.
Key technical topics and requirements
- Scope and intent: Requirements for development, validation and routine control of moist heat sterilization processes for medical devices, plus informative guidance to support good practice.
- Sterilizing agent characterization: Evaluation of moist heat as the sterilizing agent, including microbicidal effectiveness, material compatibility and environmental considerations.
- Process and equipment characterization: Identification of process variables that affect lethality, differences between saturated steam and contained product sterilization, and equipment requirements.
- Product and process definition: Defining product families, processing categories and acceptable load configurations for consistent sterilization outcomes.
- Validation lifecycle: Structured validation including Installation Qualification (IQ), Operational Qualification (OQ) and Performance Qualification (PQ), plus review and approval of validation results.
- Routine monitoring and control: Ongoing process verification, operational status checks, record retention and criteria for product release after sterilization.
- Maintaining process effectiveness: Requirements for recalibration, equipment maintenance, requalification and assessment of change to preserve validated performance.
- Informative annexes: Practical guidance on principles of moist heat sterilization, microbiological and physical approaches to process establishment, example cycles, temperature/pressure guidance, and application-specific advice for health care and industrial settings.
Practical applications - who uses ISO 17665:2024
- Medical device manufacturers developing sterilization processes for new or existing devices
- Contract sterilization service providers and sterilization validation laboratories
- Hospital sterile processing departments and clinical engineering teams implementing in‑house sterilization
- Quality, regulatory and validation engineers ensuring compliance with sterilization requirements
- Auditors and regulatory authorities assessing sterilization validation and routine control programs
Related standards and references
- ISO 13485 (medical device quality management systems)
- ISO 9001 (quality management)
- EN 556-1 and ANSI/AAMI ST67 (examples of sterility assurance level / regulatory expectations)
- ISO/TC 198 outputs and other ISO sterilization‑related documents
ISO 17665:2024 is essential for organizations that must demonstrate robust, validated moist heat sterilization processes for medical devices, ensuring consistent product sterility and compliance with regulatory expectations.
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