Class D — Full Registration
Overview
Class D requires the most comprehensive regulatory submission, including a full design dossier, complete clinical data, and mandatory third-party technical documentation review. MDA may also consult an expert panel for novel Class D devices. Target processing time is 180 working days.
Design Dossier
In addition to all Class B and C requirements, Class D requires a full design dossier:
| Design Dossier Component | Detail |
|---|---|
| Device design description | Full design concept and principles of operation |
| Specifications | Complete specifications — mechanical, electrical, software, materials |
| Design and development records | Evidence of design process, reviews, verification, and validation |
| Manufacturing process | Description of key manufacturing steps and controls |
| Design changes | History of significant design changes and their assessment |
MDA retains the right to request the full design file. At minimum, a comprehensive summary demonstrating that the design has been systematically developed and validated must be submitted.
Clinical Data Requirements
For Class D devices, clinical data expectations are the highest:
- Clinical investigation data — for novel Class D devices without established equivalents, dedicated clinical investigations are typically required
- Long-term follow-up data — for implantable Class D devices, follow-up data demonstrating long-term performance and safety
- Robust benefit-risk analysis — clearly documented with quantified benefits and risks
- International registry data — where available, registry data from established post-market surveillance registries
Mandatory CAB Technical Documentation Review
Class D requires mandatory review by a MDA-recognised Conformity Assessment Body (CAB). This review covers:
- Complete technical documentation
- Design dossier
- Clinical evaluation report
- Risk management file
The CAB issues a formal assessment report which must accompany the MDA registration application.
Expert Panel Consultation
MDA may refer novel Class D devices to an expert panel for additional scientific and clinical input. This process:
- May add 30–90 working days to the review timeline
- Involves independent clinical and technical experts
- Is particularly likely for first-of-kind devices or devices with novel materials
Post-Market Commitments for Class D
Upon registration, Class D manufacturers typically commit to:
- Enhanced PMS with periodic PSUR submission to MDA
- PMCF activities at agreed intervals
- Prompt reporting of any safety signals
- Long-term follow-up studies where clinical data at registration was limited
For a first-time Class D registration in Malaysia with no prior approvals from recognised markets, plan for 12–18 months from dossier completion to DRN issuance. Prior approvals from FDA, TGA, CE-MDR, or HSA Class D/III equivalents significantly strengthen the application and may reduce review time.