EN ISO 80369-1:2026

Overview

EN ISO 80369-1:2026, titled Small-bore connectors for liquids and gases in healthcare applications – Part 1: General requirements (ISO 80369-1:2025), sets the foundational requirements for small-bore connectors in medical devices and accessories that deliver or remove liquids and gases to or from patients. Published by CEN in alignment with ISO, this international standard aims to reduce the risk of misconnections-a recognized hazard in medical practice-by ensuring that connectors intended for different clinical applications are non-interconnectable.

The standard applies to a wide range of healthcare applications, including but not limited to respiratory support, enteral feeding, limb cuff inflation, neural procedures, and intravascular or hypodermic use. EN ISO 80369-1:2026 also provides methodologies for assessing connector designs and defining interface requirements that help minimize patient safety risks associated with wrong route connections.

Key Topics

• General Requirements for Small-bore Connectors
  Specifies the interface and performance requirements for connectors with an internal diameter less than 8.5 mm used in healthcare devices.

• Application-specific Connectors
  Defines intended application areas-such as respiratory, enteral, limb cuff inflation, neural, and intravascular or hypodermic-and the associated connector standards to be used.

• Risk Reduction Methodologies
  Outlines the process for assessing and demonstrating that connectors are non-interconnectable with those from other application groups, thereby minimizing the potential for dangerous misconnections.

• Safety and Information for Use
  Requires manufacturers to include information for safety in documentation, labeling, and instructions for use (IFU), addressing any residual risk to users.

• Methodology for New Connector Designs
  Provides a framework for assessing alternative or future connector designs for compatibility and safety, promoting innovative but safe medical device development.

Applications

EN ISO 80369-1:2026 is practical and essential for manufacturers, healthcare providers, and regulatory bodies concerned with the design and use of medical devices involving the transfer of liquids and gases. The typical sectors and scenarios of application include:

• Respiratory Care
  Devices delivering gases such as oxygen or anesthesia benefit from compliant connectors to prevent unwanted cross-connections.

• Enteral Feeding Systems
  Ensures that enteral nutrition connectors cannot be mistakenly connected to devices meant for intravenous administration or other unrelated systems.

• Limb Cuff Inflation Devices
  Blood pressure cuffs and other inflation devices are fitted with dedicated connectors to avoid errors with unrelated tubing or accessories.

• Neural Applications
  Devices used in neurological procedures are risk-managed by specific connector requirements.

• Intravascular and Hypodermic Applications
  Focuses on prevention of misconnections through the use of standardized, application-specific connectors (such as Luer connectors as per ISO 80369-7).

By providing clear guidelines, EN ISO 80369-1:2026 assists manufacturers in designing compliant devices and systems, while supporting regulatory and procurement teams in specifying safe products for clinical use. Implementation reduces the risk of patient harm due to accidental misconnections, thus improving overall healthcare safety.

Related Standards

For comprehensive risk management and global harmonization, EN ISO 80369-1:2026 references and aligns with several related standards, including:

• ISO 14971:2019 – Application of risk management to medical devices
• ISO 20417:2021 – Information to be supplied by the manufacturer
• ISO 80369-2 – Connectors for respiratory applications
• ISO 80369-3 – Connectors for enteral applications
• IEC 80369-5 – Connectors for limb cuff inflation applications
• ISO 80369-6 – Connectors for neural applications
• ISO 80369-7 – Connectors for intravascular or hypodermic applications
• IEC 62366-1 – Application of usability engineering to medical devices

These interlinked standards form a comprehensive framework for medical device connector safety, supporting the consistent application of small-bore connectors across various healthcare sectors.

With clear guidance, EN ISO 80369-1:2026 enhances safety, regulatory compliance, and interoperability throughout the healthcare industry, significantly reducing the risk of wrong route administration and support for harmonized international markets. For device designers, implementers, and healthcare procurement professionals, understanding and applying this standard is a critical aspect of medical device safety and performance.