ISO 19227:2018

Overview

ISO 19227:2018 - "Implants for surgery - Cleanliness of orthopedic implants - General requirements" defines requirements and test methods for determining and controlling the cleanliness of orthopedic implants. The standard covers both in-process cleaning and final cleaning, and frames cleaning validation and controls within a risk management approach. It does not cover packaging or sterilization (these are addressed by other standards), nor does it apply to liquid/gaseous implants or cleaning performed by users.

Key topics and technical requirements

• Scope and applicability: Applies to solid orthopedic implants and their manufacturing cleaning processes; excludes user-performed cleaning and packaging/sterilization requirements.
• Risk management: Cleaning process design, validation and ongoing verification are driven by a documented risk assessment (linked to ISO 14971 principles).
• Quality management: Activities must be performed within a formal quality management system (e.g., ISO 13485).
• Cleaning process design: Defines the cleaning family concept, worst-case specimens, and critical in‑process cleaning steps to ensure consistent final cleanliness.
• Validation and verification: Requires documented validation of cleaning processes and continued process verification during manufacturing.
• Sampling and test specimens: Specifies sampling approaches and manufacturing of test dummies representative of production parts.
• Test methods and acceptance criteria: Addresses methods for:
  • Visual inspection
  • Bioburden determination
  • Bacterial endotoxins
  • Organic contaminants (extraction and detection)
  • Inorganic contaminants
  • Particulate contamination
  • Cytotoxicity
• Documentation: Requires records covering design, validation, sampling, test results and ongoing controls.

Applications and who uses it

ISO 19227:2018 is intended for:

• Orthopedic implant manufacturers developing and validating cleaning processes.
• Quality and regulatory affairs professionals responsible for device conformity and technical documentation.
• Process engineers and production managers implementing in-process and final cleaning programs.
• Contract manufacturers and cleaning service providers supplying cleaned implants or cleaning validation data.
• Regulatory auditors and notified bodies assessing cleaning validation, residual contaminants and biological risk.

Practical uses include establishing cleaning acceptance criteria, designing worst-case test specimens, selecting extraction/detection methods for residues, and integrating cleaning validation with biological evaluation (ISO 10993‑1).

Related standards

• ISO 10993-1 (biological evaluation of medical devices)
• ISO 10993-5 (in vitro cytotoxicity)
• ISO 11737-1 (microbiological methods; bioburden)
• ISO 9377-2 and ASTM D7066 (methods for hydrocarbon/oil index and residues)

Keywords: ISO 19227:2018, cleanliness of orthopedic implants, cleaning validation, in‑process cleaning, final cleaning, risk management, implant manufacturers, medical device quality.