ISO 18250-1:2018

Overview

ISO 18250-1:2018 - Medical devices - Connectors for reservoir delivery systems for healthcare applications - Part 1: General requirements and common test methods - defines general requirements and common test methods for reservoir connectors that convey fluids in healthcare settings. The standard establishes a methodology to assess non-interconnectable characteristics (by design and dimensions) to reduce the risk of misconnections between medical devices or accessories used with patients. It covers intended fields such as respiratory, enteral, neural, intravascular, citrate-based anticoagulant solution and irrigation.

Key topics and technical requirements

• Non-interconnectability: Reservoir connectors specified here are required to be non-interconnectable with connectors of other application categories in the ISO 18250 series, and with certain other connector types referenced in related standards, unless otherwise stated in application parts.
• Materials and testing: General guidance on materials for reservoir connectors and alternative test methods; materials must support intended use and safety.
• Common performance tests: The standard defines test methods (in normative annexes) for verifying performance characteristics, while the specific pass/fail performance criteria are provided in the relevant application parts. Common mechanical and leakage tests include:
  • Positive-pressure liquid leakage
  • Sub-atmospheric-pressure air leakage
  • Stress-cracking
  • Resistance to separation from axial load
  • Resistance to separation from unscrewing
  • Resistance to overriding
  • Disconnection by unscrewing for certain screw-thread locking designs
• Test method documentation: Annexes B–I provide normative test procedures; Annexes A, J–L provide rationale, statistical modifications, examples and alternative methods.

Practical applications

• Reduces risk of wrong-route administration and misconnections between infusion reservoirs, giving sets, bag ports, and accessories.
• Applied in design and validation of reservoir connectors for:
  • Respiratory humidifiers and circuits
  • Enteral feeding systems
  • Neural delivery reservoirs
  • Intravascular infusion/tubing sets
  • Apheresis systems (citrate anticoagulant reservoirs)
  • Irrigation fluid reservoirs
• Useful for manufacturers when designing or retrofitting reservoir connectors to meet recognized safety and interoperability expectations.

Who should use this standard

• Medical device and accessory manufacturers (design, validation and regulatory submissions)
• Test laboratories performing connector conformity testing
• Regulatory bodies and standards committees
• Healthcare procurement and clinical engineering teams concerned with patient safety and device compatibility

Related standards and references

• ISO 18250 application parts (e.g., Part 3 enteral, Part 6 neural, Part 7 intravascular, Part 8 citrate-based anticoagulant)
• ISO 14971 (risk management), IEC 62366-1 (usability)
• ISO 80601-2-74 (respiratory equipment references)

Adopting ISO 18250-1:2018 supports safer connector design and helps minimize misconnections across healthcare fluid delivery systems.