What is the difference between Class 2 and Class 3 medical?

Written by Editorial Team | Last Updated: August 2026

Under regulatory frameworks established by agencies like the US Food and Drug Administration (FDA), medical devices are categorized based on risk to human health. Class II devices are classified as moderate-to-high risk products—such as infusion pumps, surgical drapes, or powered wheelchairs—which require both general controls and special controls (such as performance standards and 510(k) clearances) to ensure safety and effectiveness. In contrast, Class III devices represent the highest risk category—encompassing life-sustaining implants, pacemakers, and heart valves—which are subject to stringent general controls and rigorous Premarket Approval (PMA) applications requiring extensive clinical data proving safety and efficacy.

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