The key to keeping labels clear after sterilization

Laser engraving technology for medical devices uses precise control of laser parameters to create permanent markings on the surface of materials, solving the problem of traditional ink markings falling off after sterilization.The key points are matching the material to the laser type, surface corrosion resistance treatment, and equipment maintenance.The technology is widely used in surgical instruments and implants, significantly improving the durability and safety of the markings, and meeting the dual demands of sterilization and traceability.

Why is laser etching technology needed for medical equipment?

For medical devices, the clarity and durability of the markings have a direct impact on safety and traceability.The traditional methods of printing or spraying are easily blurred or lost in the sterilization process. Laser marking machines, however, etch precise marks permanently into the surface of the material.This technology not only avoids the risk of chemical ink contamination, it can also be used on a variety of materials, including stainless steel and titanium. This ensures that information remains readable even after repeated sterilization.

The key to maintaining the clarity of the label after sterilization.

Matching the material with the laser parameters.

Different types of medical instruments react very differently to laser wavelengths and energy.For example, stainless steel tools require a high-power fiber laser, whereas high-molecular materials are better suited to a low-power UV laser, which avoids burning the surface.Only after the optimal parameter combination is determined through experimentation can a balance be found between the depth of the etching and the clarity of the image.

Surface treatment and anti-corrosion design.

The sterilization process, involving steam or ethylene oxide, may accelerate the oxidation of the ink.In response to this problem, one can add a passivation process after laser engraving, or one can control the extent of the heat-affected zone during marking, to reduce the extent of damage to the surface structure of the material, thus increasing the corrosion resistance of the marking.

Sharing the experience of practical application.

From clinical feedback, it appears that the main areas benefiting from laser-etching technology are orthopedic implants and reusable surgical instruments.One top-three hospital reduced the error rate for reading instrument labels from 15 % to less than 1 % by changing to laser labeling equipment.It is important to note that daily maintenance (such as cleaning the lenses and adjusting the light path) has a direct impact on the quality of the marking, and it is recommended that a complete maintenance check be performed quarterly.