ISO 80601-2-74:2026

Overview

ISO 80601-2-74:2026 is an international standard developed by ISO that specifies the particular requirements for basic safety and essential performance of respiratory humidifying equipment in medical environments. This standard applies to electrical medical equipment (ME equipment) such as humidifiers and their related systems and accessories, especially where these can affect the safety or performance of the device. The requirements are designed to ensure the effective and safe use of humidification in respiratory care across both professional and home healthcare settings.

Key Topics

• Scope and Applicability: The standard covers humidifiers intended for use in combination with other respiratory care equipment, including accessories like heated breathing tubes and temperature sensors. It applies to devices used for invasive ventilation, non-invasive ventilation, nasal high-flow therapy, obstructive sleep apnoea therapy, and tracheostomy humidification.
• Active vs. Passive Devices: ISO 80601-2-74:2026 is specific to active humidifiers and active heat and moisture exchangers (HMEs) that add heat or moisture to respiratory gases. Passive HMEs and room humidifiers are excluded from the scope of this standard.
• Safety and Performance: There is a strong focus on minimizing electrical, mechanical, and radiation hazards. The standard details requirements for alarm systems, controls accuracy, temperature limitations, and system recovery protocols.
• System Integration: Humidifiers may be integrated into larger respiratory support systems (such as ventilators or sleep apnoea equipment). In these cases, additional standards may apply.
• Accessory Requirements: Any accessory or component that could affect the basic safety or essential function of a humidifier falls within the standard’s requirements.
• Labeling and Documentation: The standard outlines comprehensive requirements for marking, labelling, and accompanying information to ensure correct, safe usage by end-users.
• Testing and Classification: Detailed procedures for classification, testing, and validation are described to ensure continued safety and compliance of the equipment.

Applications

ISO 80601-2-74:2026 supports medical device manufacturers, regulatory authorities, and clinical users by providing a framework for the design, testing, and selection of respiratory humidification equipment. Practical applications include:

• Critical Care: Ensuring that heated humidifiers integrated in intensive care ventilators conform to stringent safety and performance criteria.
• Home Healthcare: Providing basic safety requirements for portable or home-use humidifiers to protect vulnerable patient populations.
• Respiratory Therapy: Guiding the selection and validation of equipment for nasal high-flow therapy, sleep apnoea treatment, and tracheostomy care.
• Compatibility Assessment: Assisting healthcare providers and manufacturers in choosing safe and compatible accessories, such as breathing tubes and controllers, that interact with the primary humidifier unit.

Incorporation of this standard into procurement, risk assessment, and clinical workflow ensures safer respiratory care and regulatory compliance.

Related Standards

To ensure comprehensive safety and compatibility, reference to additional standards is often necessary. Key related standards include:

• IEC 60601-1: General requirements for basic safety and essential performance of medical electrical equipment.
• ISO 5367: Safety and performance requirements for breathing tubes.
• ISO 20789: Requirements for cold pass-over and cold bubble-through humidifiers.
• ISO 9360-1 & ISO 9360-2: Requirements for passive heat and moisture exchangers.
• ISO 27427: Safety and performance requirements for nebulizers.
• IEC 60601-1-2, 60601-1-6, 60601-1-8, 60601-1-11: Collateral standards covering electromagnetic compatibility, usability, alarms, and home use, respectively.

For medical device compliance and effective implementation, referencing ISO 80601-2-74:2026 alongside these standards ensures safe, reliable humidification in respiratory care across all healthcare settings.