Machine type used M Series laser marking system
Laser Source Nd:YAG Q Switched
Application 2D matrix code for traceability
Completion year 2006
Customer Withheld
Material Stainless Steel

In this case study, the laser marking of medical instruments was employed to place a 2-dimensional code onto the instrument. The 2D matrix code is used for tracking the instrument to determine usage, cleaning and ownership. For a long time, laser processing has been an acceptable process for both implant and instrument marking. A laser marking process referred to an annealing or CW marking is used, whereby no material is removed, therefore no bacterial traps occur due to the marking.

Laser Marking Of Medical Instrument

Where the laser marking occurs, the surface is heated until a colour change takes place, providing the high contrast level and the basis for achieving a good read rate with the code. This heat usually penetrates 20 to 30 µm deep in the metal surface, leaving a permanent non-abrasive mark. However, these marks can be removed in the future by re-heating the material (a minimum of 700 degrees Celsius for non-ferrous metals).

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