ISO 14708-7:2019

Overview

ISO 14708-7:2019 - Implants for surgery - Active implantable medical devices - Part 7: Particular requirements for cochlear and auditory brainstem implant systems - defines particular safety, performance and testing requirements for implantable systems that restore hearing by electrical stimulation of the auditory pathways. It supplements the general requirements in ISO 14708-1 and applies to both implantable components and non‑implantable parts and accessories that could affect implant safety or performance. The standard specifies type tests on samples to demonstrate compliance and describes accepted measurement methods for electrical characteristics.

Key topics and technical requirements

• Scope and definitions: Devices that use electrical stimulation (cochlear implants, auditory brainstem implants); devices using other modalities are excluded.
• Safety and risk management: Requirements for risk analysis, usability, data security and protection from unauthorized information tampering.
• Electrical performance and testing: Measurement of output signal characteristics (amplitude, pulse width), impedance measurement accuracy, inductive link characterization and battery testing for external processors.
• Electromagnetic compatibility (EMC) and immunity: Tests and protections for radiated and static magnetic fields, radiated electric and magnetic fields, ESD and high‑power field exposure.
• Protection against physical and environmental hazards: Requirements for mechanical forces, temperature and pressure changes, ionizing radiation, heat, atmospheric changes and electrostatic discharge.
• Marking, packaging and labeling: General and sales‑packaging markings, sterile pack requirements, and construction of non‑reusable packs.
• Accessories and non‑implantable parts: Specific clauses addressing software, connections, misconnections and external features that could affect implant performance.
• Documentation and annexes: Accompanying documentation requirements plus informative annexes giving rationale, relationships to ISO/TR 14283 and notes on related standards.

Practical applications - who uses it

• Medical device manufacturers (design, verification, validation, and labeling of cochlear and auditory brainstem implant systems).
• Regulatory and quality teams preparing technical files and conformity evidence for market approval.
• Test laboratories and notified bodies performing type tests (EMC, electrical, mechanical and environmental).
• Clinical engineers and hospitals evaluating device safety, MRI compatibility concerns and maintenance procedures.
• R&D teams ensuring new product designs meet recognized international safety and performance expectations.

Related standards and references

• ISO 14708-1:2014 (general requirements for active implantable medical devices)
• ISO/TS 10974 (MRI safety for active implants)
• IEC 60601-1-2, IEC 61000-4-2 (EMC testing and ESD)
• ANSI/AAMI CI86:2017 (cochlear implant system requirements)

ISO 14708-7:2019 is essential for compliance, safety assurance and market access of cochlear and auditory brainstem implant systems, providing specific test methods and requirements tailored to electrically stimulating auditory implants.