The importance of MDR and laboratory tests
For manufacturers of medical devices, the European Union's MDR Regulation (Medical Device Regulation - Medical Device Regulation) of the European Union is one of the cornerstones for the provision of safe and effective products. The MDR not only prescribes the documentation of the product's performance, but also the documentation of its biological safety and its effects on the health of the patients.
In this context, laboratory tests are the focus of MDR compliance. Manufacturers need to create a comprehensive test plan to demonstrate the security of their devices, minimize risks and ensure smooth market access.
Test categories prescribed according to MDR
The MDR prescribes various tests depending on the class and purpose of medical devices. These tests can be divided into four main categories:
1. Biological assessment tests (ISO 10993 series)
- Cytotoxicity Tests: Measure the toxic effect at the cell level.
- Sensitization tests: Assess the risk of allergic reactions.
- Hemolysis Tests: Check if the blood cells are damaged.
- Implant Tests: Measure the effect of the implant in the body.
2. Chemical Analysis and Risk Assessment
- Analysis of potentially toxic substances in the materials of the device
- Identification of chemicals that can harm human health
- Creation of a security profile based on a risk assessment
3. Mechanical and Functional Tests
- Device durability and performance tests
- Lifetime Simulations
- Identification of possible failures during use
4. Sterilization and Microbiological Tests
- Validation of sterilization methods
- Microbial Contamination Tests
- Compliance of the device with hygiene and safety standards
MDR test plan: Requirements depending on device class
The following table summarizes which tests manufacturers need to plan depending on the device class:
Selection of the laboratory and test procedure
Within the framework of MDR, it is crucial that the tests are carried out in reliable and accredited laboratories. These laboratories usually operate in accordance with ISO/IEC 17025 and ISO 13485 standards.
| Device class | Mandatory Tests | Reference Standards |
|---|---|---|
| Class I | Cytotoxicity, Mechanical Testing | ISO 10993, ISO 13485 |
| Class IIa | Biological Tests, Sterilization | ISO 10993, EN 556 |
| Class IIb | Chemical Analysis, Mechanical Tests, Sterilization | ISO 10993, ISO 11737 |
| Class III | Complete biological, mechanical, sterilization and risk analysis | ISO 10993, ISO 1113 |
What should be considered in the test procedure?
- The test plan must be created according to the device class.
- An accredited laboratory must be selected.
- The test results must be fully documented in the technical documentation of the MDR.
- These steps protect the manufacturer in possible audits and market access procedures.
We are happy to support you in the MDR compliance of your medical devices. Contact us.
info@nano-test.de