ISO 11608-1:2022

Overview

ISO 11608-1:2022 - Needle-based injection systems for medical use (Part 1) specifies requirements and test methods for needle-based injection systems (NISs) designed for single-patient, bolus (discrete volume) delivery of medicinal products via needles or soft cannulas for intradermal, subcutaneous, and intramuscular routes. This fourth-edition standard emphasizes performance outcomes (e.g., delivered volume/dose accuracy) and system-level verification rather than mandating specific construction techniques. It applies to pre-filled and user-filled, replaceable or non-replaceable container designs when integrated into an NIS; stand‑alone prefilled syringes defined by ISO 11040-8 are excluded except where the syringe’s added mechanism affects delivery.

Key Topics and Requirements

• Primary functions and risk approach: Defines “primary functions” (those whose failure would directly cause unacceptable harm) and requires risk-based design and verification aligned with ISO 14971.
• Dose accuracy and sampling: Test methods and acceptance criteria for dose accuracy, dosing regions, dose settings and last-dose performance. Sampling strategies and rationale are provided (updated recommended sample sizes).
• Design verification and general design requirements: Performance verification across normal, anticipated and stressed conditions (environmental, life‑cycle and functional stability testing).
• Test matrix and procedures: Standardized test cases including free‑fall (drop), vibration, thermal (cold/dry-heat), damp-heat, transport and life-cycle preconditioning.
• Usability engineering and labelling: Usability per IEC 62366-1, legibility requirements under defined lighting, and instructions for use/marking (Annex E).
• Reagents, apparatus and test liquids: Defined test liquids and apparatus provisions for reproducible testing.
• Supporting annexes: Rationale for test choices, biological evaluation guidance (ISO 10993-1), and considerations for medicinal product interactions.

Applications and Who Uses It

ISO 11608-1:2022 is intended for:

• Medical device manufacturers designing NISs (hand-held and on‑body devices) to demonstrate performance and compliance.
• Regulatory and quality teams preparing technical documentation and conformity evidence for market clearance.
• Design engineers and R&D teams performing verification testing for dose delivery, durability and safety.
• Test laboratories and notified bodies executing standardized test protocols.
• Clinical and human factors specialists evaluating usability and instructions for safe patient self-administration.

Practical applications include development and validation of pre-filled/replaceable-container injection pens, autoinjectors, and other bolus-delivery systems used in outpatient and home-care settings.

Related Standards

• ISO 11040-8 (prefilled syringes) - related/excluded scope
• ISO 13485 (quality management for medical devices)
• ISO 14971 (risk management)
• IEC 62366-1 (usability engineering)
• ISO 10993-1 (biological evaluation)

Keywords: ISO 11608-1:2022, needle-based injection systems, NIS, dose accuracy, test methods, pre-filled syringe, subcutaneous injection, usability engineering, medical device testing.