ISO 11608-2:2022

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.