Overview
ISO 80369-3:2016/Amd 1:2019 is an amendment to the international standard focused on small-bore connectors for liquids and gases in healthcare applications, specifically addressing connectors for enteral applications. Published by the International Organization for Standardization (ISO), this amendment updates part 3 of the ISO 80369 series to improve the design and safety of enteral small-bore connectors used in medical devices.
This amendment refines connector dimensions, tolerances, and mechanical features to enhance compatibility, prevent misconnections, and ensure safe and reliable administration of nutritional and pharmaceutical solutions via enteral feeding tubes.
Key Topics
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Connector Dimensions and Tolerances
The amendment revises critical measurements for the male E1 small-bore connector, including newly added dimensions (a3 and r3), and updated tolerances for through-bore diameters-now specified at Ø2.9 mm with tighter tolerances (+0.05 mm / -0.2 mm). These refinements help ensure precise mating with female connectors and prevent cross-connection risks.
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Mechanical Requirements
Updates include specifications for thread profile dimensions, taper angles, nozzle length and projection angles, and engagement lengths. These features support secure connections that resist leakage, disconnection, and mechanical failure under clinical conditions.
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Non-Interconnectability
The standard emphasizes preventing incorrect connections between enteral connectors and those intended for other medical applications to reduce patient risk. This is partly achieved by geometric constraints, including specified diameters and angles, and compliance validation through test connectors and leakage tests.
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Scope Clarification
The amendment removes rectal medical devices from exclusion, explicitly including them within the scope of enteral connector specifications, thus broadening the standard’s applicability.
Applications
ISO 80369-3:2016/Amd 1:2019 is essential for manufacturers and healthcare providers involved in:
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Enteral Feeding Systems
Ensuring safe and reliable connectors for delivering nutrition and medications directly into the gastrointestinal tract.
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Medical Device Development
Guiding design compliance for enteral connectors to meet international safety and interoperability standards, minimizing risks of tubing misconnections.
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Healthcare Settings
Hospitals, clinics, and homecare environments using medical devices that rely on standardized enteral connectors to improve patient safety and reduce medical errors.
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Quality Management in Medical Devices
Supporting regulatory compliance via adherence to standardized connector dimensions, interfaces, and performance requirements, promoting consistency across healthcare products.
Related Standards
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ISO 80369 Series
This amendment is part of the broader ISO 80369 family addressing small-bore connectors across various medical applications, such as respiratory and intravascular devices, ensuring system-wide safety.
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ISO 80369-1
General requirements for small-bore connectors, including testing methods for leakage and non-interconnectability.
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ISO/IEC Directives
Providing editorial and procedural rules for drafting and maintaining standards like ISO 80369-3.
Practical Value
Implementing ISO 80369-3:2016/Amd 1:2019:
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Enhances Patient Safety by minimizing risk of dangerous misconnections in enteral feeding devices.
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Improves Product Compatibility enabling interchangeability and interoperability between connectors and medical devices from different manufacturers.
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Supports Regulatory Compliance with international norms, facilitating market access and acceptance of healthcare devices.
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Reduces Medical Errors by standardizing connector design features to avoid confusion and accidental misuse in clinical environments.
Adoption of this amendment plays a critical role in maintaining high safety standards for enteral medical devices, protecting patients, and supporting manufacturers in delivering quality healthcare solutions.
Open preview (PDF)Small-bore connectors for liquids and gases in healthcare applications — Part 3: Connectors for enteral applications — Amendment 1