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    Curated comparison tables

    In-depth, attribute-by-attribute tables for the most common MedTech term pairs. Each row is sourced from the linked term pages.

    Post-Market

    Periodic Safety Update Report(PSUR)

    In one line
    Periodic EU MDR/IVDR report summarizing post-market surveillance findings.
    Definition
    Per EU MDR Article 86, the PSUR summarizes results and conclusions of analyses of post-market surveillance data, including main findings of the PMCF, the rationale and description of preventive and corrective actions, and the volume of sales. PSURs are required for Class IIa, IIb and III devices: Class IIb and III must update them at least annually, and Class IIa at least every two years. For Class III and implantable devices, the PSUR is submitted to the notified body through EUDAMED for evaluation, while for other classes it is kept available to the notified body and authorities. MDCG 2022-21 gives guidance on content and format.
    Why it matters
    PSUR frequency depends on device classification. Class IIb implantable and Class III devices require annual PSURs assessed by Notified Bodies.
    Common pitfalls
    • •Failing to integrate findings from all post-market surveillance activities, such as PMCF, into the PSUR is a common mistake.
    • •Submitting a PSUR that lacks clear justification for chosen preventive and corrective actions can lead to regulatory non-compliance.
    • •Incorrectly determining the submission frequency of the PSUR based on device classification or regulatory updates is a frequent error.
    • •Omitting quantitative data, such as sales volumes, or qualitative insights that support the conclusions in the PSUR will lead to an incomplete report.
    • •Not adequately linking the PSUR content to an updated risk-benefit assessment of the device can be a significant oversight.
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    Why compare MedTech terms side by side?

    MedTech terminology is full of pairs that look interchangeable but carry very different regulatory, clinical, and commercial consequences. Picking the wrong framework, pathway, or standard early in a project can add months to a submission, invalidate clinical evidence, or trigger an audit finding. Side-by-side comparison is the fastest way to surface those differences before they become costly mistakes.

    Each comparison on this page pulls from the same vendor-neutral, sourced definitions used throughout the MedTech Terms glossary. You see the one-line summary, the formal definition, why it matters in practice, common pitfalls, and the primary sources (FDA guidance, EU MDR/IVDR articles, ISO/IEC standards, MDCG documents, IMDRF principles) that back each entry. That makes the comparison defensible in regulatory strategy memos, design reviews, and submission narratives.

    Common comparison patterns

    How to use this tool

    Pick term A and term B from the dropdowns, or click a preset above. The URL updates with both slugs so you can bookmark or share the exact comparison with a colleague, a notified body reviewer, or your regulatory consultant. Click Open full page on either side for the complete entry, including FAQs, related terms, and the full citation list. If you are not sure which term to start with, browse the Categories view or the A-Z index.

    MedTech Terms is a vendor-neutral community resource sponsored by Blue Goat Cyber. Definitions are written for educational use and are not legal or regulatory advice.