Which Data Should We Collect In Our Post-Market Surveillance?
Read my ultimate guidance on PMS and my article about trend analysis. Long AnswerLet's start with the regulatory background. I know it’s boring, but h
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What goes into a PSUR, how often to update it, and how notified bodies assess it.
If you manufacture a class IIa, IIb or III medical device, your PMS data must periodically end up in a PSUR. MDCG 2022-21 explains which devices need one, whether the cycle is annual or every two years, how devices may be grouped, and what the report must contain. The important bit: a PSUR is not a data dump. It must say what the data means for your device's benefit-risk profile.
You need a Periodic Safety Update Report (PSUR) for MDR class IIa, IIb and III devices, including corresponding custom-made devices and legacy devices still placed on the market under an MDD/AIMDD certificate. Class I devices get a shorter Post-Market Surveillance Report under Article 85 instead.
This guidance only covers medical devices under the MDR. It does not cover IVDs under the IVDR.
The schedule depends on risk class and whether the device is implantable:
Device |
Minimum frequency |
What you do with the PSUR |
|---|---|---|
Class IIa, non-implantable |
Every two years |
Keep it available to your notified body and competent authorities |
Class IIa, implantable |
Every two years |
Submit through EUDAMED once the relevant module applies |
Class IIb, non-implantable |
Annually |
Keep it available to your notified body and competent authorities |
Class IIb, implantable and class III |
Annually |
Submit through EUDAMED once the relevant module applies |
Legacy class IIa, IIb and III devices |
Based on the MDD/AIMDD class above |
Do not upload to EUDAMED; make it available to the notified body and competent authorities |
Until EUDAMED's post-market surveillance and vigilance module is available, agree the submission route with your notified body for reports that will eventually require upload.
Your data periods must be contiguous: no gaps and no overlapping months. The cycle starts at MDR certification for a new MDR device, or from 26 May 2021 for a legacy device. The obligation does not simply stop when you discontinue sales or the certificate expires. It continues until the lifetime of the last device placed on the market has been covered.
The PSUR is a stand-alone summary of what your PMS system found during the reporting period. It should be understandable without opening ten other documents, while referencing the supporting records where a reviewer can inspect the detail.
Section |
What a reviewer is looking for |
|---|---|
Device scope |
The devices, Basic UDI-DIs, intended purposes, market status, and any changes since the previous PSUR |
Sales and exposure |
Units placed on the market, estimated patient exposure, usage frequency, and relevant population characteristics |
Vigilance and CAPA |
Serious incidents, trends, FSCAs, and safety- or performance-related corrective and preventive actions |
Other PMS data |
Complaints and feedback, literature, registries, public databases, similar-device information, and other real-world data |
PMCF |
The main findings from general and specific PMCF activities, with reference to the PMCF evaluation report |
Conclusions |
Data limitations, new or emerging risks, whether benefits were achieved, the resulting benefit-risk determination, and actions taken |
Use rates as well as raw counts wherever possible. Five complaints mean something very different across 50 devices and 50,000 devices. The guidance also asks you to compare the current period with earlier periods and, where relevant, split EEA/Turkey/Northern Ireland data from worldwide data. Serious incidents should use IMDRF adverse-event terminology where available.
You may cover several Basic UDI-DIs or device families in one PSUR, but you need a reason why the grouping makes sense and the data must still let a reviewer see how each device performs. All grouped devices must be assessed by the same notified body.
Choose one leading device: the highest-risk device, or one you nominate where several share the highest class. Its risk class and certification schedule drive the frequency, reporting period, and submission route for the whole group. You may add or remove other devices later, but you cannot replace the leading device without starting a new PSUR.
MDCG guidance
The MDCG's first dedicated guidance on the post-market surveillance system: what your PMS plan must contain, which data sources count, and how PMS feeds risk management and clinical evaluation.
Read my ultimate guidance on PMS and my article about trend analysis. Long AnswerLet's start with the regulatory background. I know it’s boring, but h
Sebastian Skorka
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