Laser marking that lasts: Secure UDI markings for reusable instruments
Reprocessable medical devices must remain clearly identifiable even after many sterilization cycles. The case study shows how ultra-short pulse lasers enable permanently durable, standard-compliant UDI markings—without damaging the material.
Permanent legibility throughout the entire product life cycle
The secure identification of surgical instruments is a key factor in quality and traceability. Reusable instruments in particular must remain reliably marked throughout numerous cleaning and sterilization processes. A recent case study demonstrates how ultra-short pulse lasers meet these requirements and why validated processes are indispensable in this context.
Realistic tests for maximum safety
To test the long-term durability of directly applied UDI codes, stainless steel instruments were marked with an ultrashort pulse laser, passivated, and then autoclaved 1,000 times in a steam sterilizer. The evaluation was carried out in accordance with ISO/IEC 29158:2020-12. The result: the markings remained stable, high-contrast, and machine-readable.
Why the technology makes the difference
UDI markings must withstand high stresses – from aggressive cleaners to thermal stress. Ultra-short pulse lasers offer ideal conditions for this: they produce precise, high-contrast markings without thermal damage and with excellent corrosion resistance.
Conclusion
Ultra-short pulse lasers enable durable, standard-compliant markings for reusable medical devices. In combination with validated processes, this results in markings that survive the entire life cycle of an instrument – and thus support patient safety in the long term.
