ISO 11608-4:2022

Overview

ISO 11608-4:2022 specifies requirements and test methods for needle-based injection systems containing electronics (NIS‑E). It covers single‑use and reusable NIS‑Es, with or without software, and includes electronic accessories that are intended to be physically or electrically connected to the system. The standard applies to devices used for self‑administration or administration by a caregiver or healthcare provider and includes on‑body delivery systems (OBDSs) and electromechanical pen injectors. It is the second edition and integrates relevant requirements from the IEC 60601 series for hand‑held medical injectors.

Key topics and technical requirements

• Scope and definitions: Clarifies types of NIS‑E, applied parts, and accessory interfaces.
• General design and risk management: Emphasizes a risk‑based approach and usability engineering tied to intended use.
• Electrical safety: Requirements and test methods for protection against electrical hazards, insulation, patient leakage current, touch current, and separation of parts (Type X / Type Y classifications).
• Electromagnetic compatibility (EMC): Emissions and immunity requirements, identification of operating modes, test documentation, and immunity to proximity fields from RF wireless equipment.
• Mechanical hazards: Tests for shock, vibration, impact and on‑body enclosure performance.
• Programmable NIS‑E: Specific considerations for programmable devices (note: the document does not itself specify software life‑cycle requirements).
• Testing and preconditioning: Type tests, sample sizes, ambient conditions, humidity and fluid‑leakage preconditioning, and tests addressing single‑fault conditions.
• Identification and marking: Labelling, instructions for use (including EMC-related instructions) and test record documentation.
• Annexes and references: Informative annexes (e.g., rationale for using 240 V in some tests) and harmonization with IEC/ISO normative references.

Important exclusions: ISO 11608‑4:2022 does not specify software life‑cycle requirements for programmable software (see IEC 60601‑1 Clause 14) and does not set cybersecurity requirements.

Practical applications - who uses this standard

• Medical device manufacturers and design engineers developing electronic pen injectors, OBDS or other NIS‑Es
• Product safety and validation teams performing type and conformity testing
• Regulatory and quality affairs personnel preparing technical files for market approval or CE marking
• Test laboratories and notified bodies assessing electrical safety, EMC and mechanical robustness
• Procurement and accessory suppliers ensuring compatibility with NIS‑E interfaces

Related standards (if applicable)

• ISO 11608 series (other parts covering dose setting, delivery performance, etc.)
• IEC 60601 series (electrical safety and software life‑cycle considerations referenced)
• National and regional medical device EMC and safety guidance

Keywords: ISO 11608‑4:2022, needle‑based injection systems, NIS‑E, electronic injectors, medical device standards, EMC testing, electrical safety, on‑body delivery systems, programmable injectors.