Medical device class II a
Class IIa medical devices form the second tier in the MDR's four-level classification system (Classes I, IIa, IIb, III).
Typical Class IIa products:
- Hearing aids
- Surgical needles and sutures
- Injection syringes without medicinal products
- Short-term contact lenses
- ECG electrodes
- Non-resorbable dental materials
- Notified Body is mandatory (unlike Class I)
- Manufacturer may choose between conformity assessment modules (MDR Annex IX, X, or XI)
- Ongoing production surveillance by the Notified Body is possible but not required in all modules
Distinctions:
- Class I: Notified Body required only for Is, Im, Ir
- Class IIa: Notified Body always required
- Class IIb: higher risk, stricter requirements, Notified Body
- Class III: highest risk, strictest requirements
Class IIa is relevant for many common medical devices used in hospitals and clinics.
Frequently asked questions
What distinguishes Class IIa from Class I?
Class I: no Notified Body required (except Is, Im, Ir). Class IIa: Notified Body always mandatory. Class IIa covers products with moderate risk potential that are more invasive or have longer body contact than Class I products.
Which conformity assessment modules are available for Class IIa?
Under MDR, Class IIa manufacturers may choose between Annex IX (QMS-based), Annex X (EU type-examination), and Annex XI (QMS conformity), with Annex IX being the most common route.
Are medical single-use gloves Class IIa?
No. Non-sterile medical single-use gloves fall under Class I. Sterile single-use gloves may be Class Is depending on their intended use but then require a Notified Body only for the sterilisation aspect.