Overview
EN ISO 18082:2014/A1:2017 (CEN adoption of ISO 18082:2014/Amd 1:2017) is an amendment to the international standard that specifies the dimensions of non‑interchangeable screw‑threaded (NIST) low‑pressure connectors for medical gases used with anaesthetic and respiratory equipment. The amendment updates terminology (notably the replacement of “oxygen‑enriched air” with Oxygen 93 / O 93), clarifies certain dimensional tolerances, and corrects table entries and bibliography references. This document supports safe, standardized connections for medical gas systems to reduce the risk of misconnections.
Key topics and technical requirements
- Connector family: Applies to non‑interchangeable screw‑threaded (NIST) low‑pressure connectors used in anaesthetic and respiratory devices and medical gas pipelines.
- Terminology update: Replaces the term “oxygen‑enriched air” with Oxygen 93 and introduces the designation O 93 where applicable.
- Dimensional clarifications: Amendment 1 clarifies dimension tolerances (notably for dimension I across a range of connectors from B11 up to C24) to ensure consistent manufacturing and interchangeability control.
- Table corrections: Updates in the standard’s tables (e.g., Table 1, Table 3, Table 5) to align gas designation and tolerance information.
- Bibliography and references: Removes a superseded footnote to ISO 5359 and updates external references (for example, AS 2896:2011) to reflect current related standards.
- Compliance requirement: CEN adopted the amendment without modification; member bodies are required to implement it as a national standard.
Practical applications
- Ensuring that medical gas connectors used in anaesthetic machines, ventilators, and pipeline outlets are uniquely keyed to prevent misconnections.
- Guiding manufacturers on mechanical dimensions and tolerances required for NIST low‑pressure connectors to meet European and international conformity.
- Informing procurement and quality assurance teams in hospitals and clinics when specifying compatible fittings and replacement parts.
- Supporting testing laboratories and conformity assessors in verifying that connector dimensions and markings meet the amended standard.
Who uses this standard
- Medical device manufacturers (anaesthesia/ventilation equipment)
- Medical gas pipeline system designers and installers
- Hospital biomedical/clinical engineers and procurement officers
- Standards committees, conformity assessment bodies, and testing laboratories
Related standards
- ISO 18082:2014 (base standard)
- ISO 7396‑1 (medical pipeline systems) - amendment motivated by revisions to this standard
- ISO 5359 (bibliographic reference adjustments)
- AS 2896:2011 (updated bibliographic reference)
Keywords: EN ISO 18082:2014/A1:2017, ISO 18082 amendment, NIST connectors, non‑interchangeable screw‑threaded, medical gas connectors, Oxygen 93, anaesthetic and respiratory equipment.
