The process validation obligation for sterilization processes carries forward from §820.75 — sterility cannot be verified by end-product inspection, so validation with a high degree of assurance was and remains required. Documentation of validation activities, results, and revalidation when changes occur are all continued obligations.
§7.5.7 adds three elements absent from §820.75: sterile barrier system validation is named as a distinct required obligation (not only sterilization processes); revalidation triggers now explicitly include product changes (geometry, materials, packaging) — not only process changes or deviations; and ISO 11607-1 and ISO 11607-2 are explicitly anchored as the applicable standards framework, elevating them from recognized best practice to regulatory reference.
Auditors will verify that documented validation procedures exist for both sterilization processes and sterile barrier systems. They will test revalidation trigger assessment in change control records — specifically whether product design changes (material substitutions, geometry changes) triggered evaluation against the validated envelope. Validation reports against ISO 11607-1/11607-2 requirements and contract sterilization quality agreements will also be reviewed.
Maps to
QMSR / ISO 13485: §820.75 Process validation.
Requirement text
The organization shall document procedures (see 4.2.4) for the validation of processes for sterilization and sterile barrier systems. Processes for sterilization and sterile barrier systems shall be validated prior to implementation and following product or process changes, as appropriate. Records of the results and, conclusion of validation and necessary actions from the validation shall be maintained (see 4.2.4 and 4.2.5). NOTE Further information can be found in ISO 11607-1 and ISO 11607-2.
Why this clause exists
Sterilization processes and sterile barrier systems share the defining characteristic of all special processes: their output — sterility assurance — cannot be fully verified by subsequent inspection or testing of finished devices. A device cannot be tested for sterility in a way that is both non-destructive and statistically sufficient. The only acceptable assurance mechanism is process validation, which establishes that the process consistently achieves the required sterility assurance level when operated within defined parameters.
ISO 13485 §7.5.7 creates a device-category-specific validation obligation that is distinct from the general special-process validation requirement at §7.5.6. The distinction matters operationally: sterilization processes and sterile barrier systems are subject to recognized international standards (ISO 11607-1 and ISO 11607-2, referenced in the NOTE) that define validation requirements in detail. §7.5.7's explicit call-out of this device category ensures that organizations developing or acquiring sterile devices recognize the validation obligation and the applicable standards framework, rather than deriving the obligation only from the general §7.5.6 text.
The revalidation trigger — 'prior to implementation and following product or process changes, as appropriate' — is critical. Changes to the device (geometry, material, packaging), to the sterilization process (cycle parameters, equipment, load configuration), or to the sterile barrier system (packaging material, seal design, supplier) can all affect the validation status of a previously validated sterilization process or sterile barrier system. The obligation to revalidate 'following product or process changes, as appropriate' requires that every such change be evaluated against the validated-process envelope and revalidated where the change falls outside that envelope.
Records of validation results, conclusions, and necessary actions must be maintained — separately identified from general process records — to provide the audit trail of how sterility assurance was established and what actions were required to maintain it over time.
What changed
§820.75 — Part 820 (legacy)
"(a) Where the results of a process cannot be fully verified by subsequent inspection and test, the process shall be validated with a high degree of assurance and approved according to established procedures. The validation activities and results, including the date and signature of the individual(s) approving the validation and where appropriate the major equipment validated, shall be documented. (b) Each manufacturer shall establish and maintain procedures for monitoring and control of process parameters for validated processes to ensure that the specified requirements continue to be met. (1) Each manufacturer shall ensure that validated processes are performed by qualified individual(s). (2) For validated processes, the monitoring and control methods and data, the date performed, and, where appropriate, the individual(s) performing the process or the major equipment used shall be documented. (c) When changes or process deviations occur, the manufacturer shall review and evaluate the process and perform revalidation where appropriate. These activities shall be documented."
§7.5.7 — ISO 13485:2016 (current)
"The organization shall document procedures (see 4.2.4) for the validation of processes for sterilization and sterile barrier systems. Processes for sterilization and sterile barrier systems shall be validated prior to implementation and following product or process changes, as appropriate. Records of the results and, conclusion of validation and necessary actions from the validation shall be maintained (see 4.2.4 and 4.2.5). NOTE Further information can be found in ISO 11607-1 and ISO 11607-2."
Common gaps (what we see in audits)
- Sterile Barrier System Not Formally Validated — The organization has validated its sterilization process but has not conducted a formal validation of the sterile barrier system (packaging material, package design, seal integrity) in accordance with ISO 11607-1. The sterile barrier system was qualified informally or through supplier documentation only. ISO 13485 §7.5.7 names sterile barrier systems as a distinct required validation.
- Product Changes Not Evaluated Against Validated Sterilization Envelope — Device design changes (material substitutions, geometry changes, density changes) and packaging changes (material supplier changes, geometry modifications) are processed through design change control but are not evaluated against the existing sterilization process and sterile barrier system validation envelopes. Changes that fall outside the validated load configuration or packaging design have been implemented without revalidation.
- Validation Procedures Not Documented — Sterilization validations have been performed and reports exist, but there is no documented procedure defining the methodology, acceptance criteria framework, statistical approach, and revalidation trigger criteria used. ISO 13485 §7.5.7 requires documented procedures for validation of sterilization processes and sterile barrier systems, not merely validation reports.