Glossary > MDR
The MDR (Medical Device Regulation, Regulation (EU) 2017/745) is the EU Medical Device Regulation, which governs the essential safety and performance requirements, the conformity assessment procedure, clinical evaluation, and market surveillance of medical devices in the EU. It has replaced the former Medical Devices Directive (MDD 93/42/EEC) and has been fully applicable since May 26, 2021.
Publisher: European Union
Legal basis: Regulation (EU) 2017/745
The regulation applies to manufacturers, importers, and authorized representatives who place medical devices on the market in the EU – ranging from simple dressings to implants and complex diagnostic technology. This affects both established medical technology companies and smaller manufacturers and suppliers who, as part of the supply chain, must provide technical documentation and proof of conformity.
Risk Classification: classification into Class I, IIa, IIb, or III based on risk potential
Clinical evaluation: demonstration of safety and performance based on clinical data throughout the product lifecycle
Technical documentation: comprehensive, product-specific evidence in accordance with Annexes II and III
UDI (Unique Device Identification): unique product identification for seamless traceability
Post-market surveillance: Systematic monitoring of the product after market introduction, including a vigilance system
Notified bodies: mandatory involvement of accredited testing bodies for Class Is/Im/Ir and higher
The MDR is directly applicable EU law that sets forth specific product requirements, risk classes, and a mandatory conformity assessment procedure for CE marking. ISO 13485, on the other hand, is a voluntary, internationally recognized standard that governs exclusively the manufacturer’s quality management system. In practice, MDR compliance is virtually impossible to achieve without a certified quality management system: A valid ISO 13485 certification therefore regularly serves as the basis on which Notified Bodies conduct the conformity assessment under the MDR.
A medical device may not be placed on the market in the EU without a valid CE marking in accordance with the MDR. For products already on the market, market surveillance authorities may order sales bans and recalls; in the event of safety incidents, Field Safety Corrective Actions must be reported. Since a defective medical device can directly endanger human life, serious violations may also result in civil and criminal consequences for manufacturers and responsible individuals.
ISO 13485 – quality management system for medical devices
IVDR – EU regulation on in vitro diagnostic medical devices
FDA 21 CFR Part 820 – U.S. quality management requirements for medical mevices
ISO 9001 – basic quality management standard
Yes, as an EU regulation that is directly applicable and has been fully in effect since May 26, 2021.
The MDR is EU law that sets forth specific product requirements, while ISO 13485 is a voluntary standard that governs only the manufacturer's quality management system.
Classes I, IIa, IIb, and III, categorized according to the potential risk to patients and users.
The European database for medical devices, designed for the centralized recording of manufacturers, products, and incidents.
The greatest operational burden lies in maintaining a complete audit trail: Every manufacturing and testing step must be documented in the Device History Record in a tamper-proof manner and uniquely assigned to the product via the UDI. Connected worker platforms such as weasl automatically capture this evidence during the ongoing manufacturing process and support the formal change control process for changes to materials, processes, or work instructions, as required by Annex IX of the MDR.
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