In this case study, laser marking was employed to place a 2-dimensional code onto the medical instrument. The 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.
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).
If you would like further information on this laser marking application, or any other application, please request a call back, or talk to one of our laser marking specialists on 01737 826902.
