ISO 80369-6:2025

Overview

ISO 80369-6:2025 is an international standard developed by ISO for small-bore connectors for liquids and gases in healthcare settings, specifically addressing connectors used in neural applications. This standard ensures that connectors intended for neuraxial and neural procedures are uniquely designed to minimize the risk of hazardous misconnections with connectors for other clinical applications. ISO 80369-6:2025 is part of a broader effort to enhance patient safety and support standardized medical device compatibility.

Compliance with ISO 80369-6:2025 is critical for manufacturers of medical devices designed for neural interventions, such as the administration of regional anaesthesia, chemotherapy, or diagnostic agents to the central nervous system. The standard applies to the design and performance of connectors but does not set requirements for the complete medical device or its accessories.

Key Topics

• Non-Interconnectability: The standard mandates that neural application connectors must not interconnect with connectors from other applications, in accordance with ISO 80369-1. This reduces risk of misconnections, a significant source of potentially harmful medical errors.

• Materials Requirements: Connectors must be made from materials with a nominal modulus of elasticity (in flexure or tension) greater than 950 MPa. This ensures mechanical robustness and preserves non-interconnectability features.

• Dimensional and Performance Criteria: Specific dimensions, tolerances, and test methods are defined to verify connector performance, including:

  • Dimensional conformity (see Annex B)
  • Leak resistance under both positive and sub-atmospheric pressure
  • Resistance to axial load, unscrewing, overriding, and stress cracking

• Testing and Quality Assurance: ISO 80369-6:2025 provides normative test methods (referencing ISO 80369-20:2024 and other standards) for assessing connector leakage, strength, and durability under defined conditions.

• Terminology and Guidance: The document clearly defines terms such as "slip connector" and "lock connector" and provides rationale in Annex A to support effective application and future revision.

Applications

ISO 80369-6:2025 is applicable to small-bore connectors used in a range of neural medical procedures, including:

• Regional Anaesthesia Administration: Ensures safe delivery of anaesthetics to neural sites such as the spinal, epidural, or intrathecal regions.
• Infusion and Drug Delivery: Safe administration of medicines (e.g., chemotherapeutics, antibiotics, or analgesics) directly to the central nervous system.
• Diagnostic and Therapeutic Fluid Exchange: Secure sampling or removal of cerebrospinal fluid for diagnosis or therapy.
• Wound Infiltration and Nerve Blocks: Used in devices for continuous or single-shot nerve block techniques and plexus blocks.

By providing a dedicated connector design for neural applications, ISO 80369-6:2025 supports clinical safety protocols and aligns with regulatory risk management standards.

Related Standards

• ISO 80369-1: General requirements for small-bore connectors in healthcare applications. Foundational for the non-interconnectability principle.
• ISO 80369-7: Connectors for intravascular or hypodermic applications.
• ISO 80369-20: Common test methods for small-bore connectors, referenced for standardized testing.
• ISO 14971: Application of risk management to medical devices, essential for safety and regulatory compliance.
• ISO 178, ISO 527 series, ASTM D638, ASTM D790, ISO 6892-1: Material property and tensile/flexural testing standards utilized to verify material requirements.

Adhering to ISO 80369-6:2025 facilitates market access, supports global harmonization, and most importantly, enhances patient safety in neural medical procedures by reducing the risk of potentially catastrophic misconnections. Manufacturers, healthcare providers, and regulatory bodies are all stakeholders in its robust implementation.