Overview
ISO 11608-2:2022 specifies requirements and test methods for single-use, sterile double-ended pen needles used with needle-based injection systems (NISs), such as pen injectors. Part 2 of the ISO 11608 series focuses on non-integrated double-ended needles (commonly called pen needles) and is intended to be used together with ISO 11608-1. The standard sets design, safety and verification expectations to support reliable dose delivery, sterility and patient safety.
Note: ISO 11608-2:2022 excludes needles for dental use, pre-attached syringe needles, hypodermic needles, needles for other administration routes (e.g., intravenous, intrathecal, intraocular) and materials forming the primary container closure’s medicinal contact surfaces - though its test methods can still inform design and evaluation of those products.
Key Topics and Technical Requirements
- Needle tube requirements: material, dimensions and tubing characteristics for the cannula.
- Double-ended pen needle assembly: dimensional tolerances, needle points, freedom from defects and cleanliness.
- Biocompatibility and pyrogenicity tests to ensure patient safety.
- Flow rate testing and acceptance criteria (influence on injection time and user experience).
- Bond between hub and needle tube and methods to verify bonding strength.
- Functional compatibility with NISs: dose delivery verification (dose accuracy or confirmation methods), needle hub removal torque, and tests to demonstrate the bevel position and absence of leakage.
- Sampling, preconditioning and standard test atmospheres: sampling plans aligned with ISO 11608-1, preconditioning procedures, and defined test environments.
- Packaging, marking and instructions for use (IFU): required labelling, user information and packaging sterility requirements.
- Test methods and annexes: practical test procedures (e.g., bond tests, flow-rate measurement) and informative background material.
Practical Applications - Who Uses This Standard
- Medical device manufacturers designing or producing double-ended pen needles and NIS-compatible components.
- Design and R&D teams validating needle geometry, bonding and flow characteristics.
- Quality assurance and regulatory affairs for product validation, conformity assessment and device registration.
- Independent test laboratories performing bench tests for sterility, flow rate, bond strength and functional compatibility.
- Procurement and clinical engineering evaluating supplier compliance and device interoperability.
Related Standards
- ISO 11608-1 - Needle-based injection systems: Requirements and test methods (general requirements)
- ISO 11608-3 - Integrated needle assemblies
- ISO 7864 - Sterile hypodermic needles for single use
- Quality management standards referenced: ISO 13485, ISO 9001 (for manufacturing quality systems)
Keywords: ISO 11608-2:2022, double-ended pen needles, needle-based injection systems, pen needles, test methods, functional compatibility, flow rate, biocompatibility, sterility, needle hub bond.