Why Your Medical Device Design History File Should Be a Story, Not a Checklist

Under the EU Medical Device Regulation (MDR), manufacturers are required to maintain Technical Documentation (Annex II) or a Design Dossier (Annex III) that traces a device's development from user needs through to verification, validation, and market release. These documents serve the same fundamental purpose as the FDA's Design History File under 21 CFR 820.30 and ISO 13485 Section 7.3, demanding a coherent, auditable narrative rather than a collection of disconnected records. Regulatory experts recommend structuring the file in modular, searchable sections — covering risk management, verification reports, design reviews, and change control — with live links to source artefacts instead of static copies. A traceability matrix linking each design input to corresponding outputs, verification activities, and risk controls is considered the first thing auditors examine during notified-body reviews. Treating the documentation as an ongoing, integrated workflow within an eQMS — rather than last-minute paperwork — is seen as the most effective way to reduce audit risk and avoid costly corrective actions.