Overview
ISO 9170-2:2008 - "Terminal units for medical gas pipeline systems - Part 2: Terminal units for anaesthetic gas scavenging systems" specifies requirements and dimensions for terminal units used in anaesthetic gas scavenging systems (AGSS) in accordance with ISO 7396-2. The standard covers two terminal unit types based on whether the power device is upstream or downstream of the terminal unit and defines the mating counterpart (probe) for type-specific connection points. ISO 9170-2:2008 focuses on safety, type specificity, cleanliness, testing, identification and information to be supplied by the manufacturer.
Key topics and technical requirements
- Scope and types
- Defines two AGSS terminal unit types (Type 1 and Type 2) depending on the position of the power device relative to the terminal unit.
- Clarifies that operating pressure ranges are given in ISO 7396-2.
- Type specificity and dimensions
- Requires type-specific connection points and probes to prevent incorrect connections between AGSS components.
- Specifies dimensional requirements for sockets, probes and interfaces (mating counterparts).
- Materials and construction
- Emphasizes suitability of materials, cleanliness, and construction to meet safety objectives.
- Safety and risk management
- Requires design and documentation consistent with ISO 14971 risk management principles to reduce hazards in normal and single-fault conditions.
- Testing and performance
- Includes test methods for: endurance, pressure drop, connection/disconnection force, mechanical strength, leakage, and type specificity.
- Requires tests for effective connection of probes and durability of markings and colour coding.
- Identification and information
- Specifies marking, colour coding, packaging and manufacturer-supplied information required for installation and testing.
- Interfacing
- Aligns with related standards for transfer/receiving systems (ISO 8835-3) and medical gas pipeline systems (ISO 7396-2).
Applications and who uses this standard
ISO 9170-2:2008 is directly applicable to:
- Medical device and terminal unit manufacturers designing AGSS terminal units, probes and sockets
- Hospital biomedical engineers and facilities teams installing and maintaining medical gas pipeline and anaesthetic gas scavenging systems
- Contractors and installers performing pipeline pressure testing and commissioning under ISO 7396-2
- Regulatory bodies and procurement teams assessing compliance and safety of AGSS components
- Clinical engineers and risk managers applying ISO 14971 for safe system integration
Practical benefits include preventing hazardous cross-connections, ensuring reliable probe/socket mating, simplifying maintenance/testing, and improving patient and staff safety during anaesthetic gas disposal.
Related standards
- ISO 7396-2 - Medical gas pipeline systems: Anaesthetic gas scavenging disposal systems
- ISO 8835-3 - Transfer and receiving systems for active AGSS
- ISO 14971 - Risk management for medical devices
- ISO 15001 - Compatibility with oxygen
- ISO 9170-1 - Terminal units for compressed medical gases and vacuum
Keywords: ISO 9170-2:2008, anaesthetic gas scavenging systems, AGSS terminal units, terminal unit probes, type-specific connection, medical gas pipeline systems, ISO 7396-2, testing and marking.
Open preview (PDF)Terminal units for medical gas pipeline systems — Part 2: Terminal units for anaesthetic gas scavenging systems