When is an accessory regulated as a medical device accessory under the EU MDR?
The manufacturer's controls the test. The article must not itself be a medical device, and the manufacturer must intend it for use with one or more particular medical devices to enable their intended use or to specifically and directly assist their medical functionality.
A general-purpose article does not become an merely because it is compatible with a medical device. If the article has its own medical , assess it as a medical device instead; if it only provides general support without the specific device link in Article 2(2), document why it falls outside the accessory definition.
MDCG classification guidance gives a useful boundary: software or equipment attached to a device is not an when it does not specifically enable the device's intended use or specifically and directly assist its medical functionality. By contrast, Annex VIII Rule 8 treats accessories to active implantable devices as class III, including non-implantable or non-active accessories, which shows why the accessory's own rule analysis matters.
That intended-purpose link should be visible in the retained evidence: labels, instructions for use, marketing claims, compatibility statements, interface specifications, risk analysis, and any decision explaining why the product is or is not an MDR .
- Record the particular device or device family the article supports and the intended medical function it enables or assists.
- Distinguish an from a component, spare part, system, or procedure pack; those categories can trigger different MDR analyses even when products are supplied or used together.
- Classify the separately from the device with which it is used; Annex VIII states that accessories are classified in their own right.
- If the product is qualified as an , keep MDR technical documentation, clinical evaluation evidence where applicable, UDI assignments, EU declaration of conformity data, registration evidence, and PMS inputs proportionate to its class and risk.
When is an regulated as a medical device accessory under the EU MDR?
An article is an MDR when it is not itself a medical device but the manufacturer intends it to be used with one or more particular medical devices to enable their intended use or to specifically and directly assist their medical functionality. The decision turns on , not on a generic support role.
Does an MDR take the same class as the device it supports?
Not automatically. The MDR classification rules apply separately to accessories, so the record should show the 's own , applicable Annex VIII rule, risk class, and conformity assessment route.
What evidence should support an MDR decision?
Keep the intended-purpose rationale, supported device relationship, claims and labelling review, compatibility or interface evidence, risk-management link, classification rule memo, conformity assessment route, technical documentation, UDI and Basic UDI-DI records where required, registration evidence, EU declaration of conformity data, and PMS inputs such as complaints, incidents, trend signals, and corrective actions.
Citations (3)
- Regulation (EU) 2017/745 on medical devices
Defines accessories for medical devices, brings accessories within MDR device rules, and requires separate classification of accessories in their own right.
accessories for medical devices
- MDCG 2022-7 - Questions and answers on the UDI system
Explains Basic UDI-DI grouping, UDI responsibilities, and UDI handling for device components and regulatory documentation.
Basic UDI-DI is the main key
- European Commission - EUDAMED UDI/device registration
Commission source for the UDI/device registration module used for device identification and registration data.
UDI/Devices registration