Marking UDI Codes with Picosecond Laser

Picosecond laser: the secrets of this technology

We have already talked about the Picosecond Laser in this article and how important it is today to ensure 100% reliable Laser marking for UDI codes on medical devices.

The medical industry is one of the most demanding industries for Laser marking on both metal and plastic.

This is why the advent of the Picosecond Laser has been a revolution for all companies in the industry. Let’s take a closer look at its technical specifications.

CampionmiMedicale-1024x683 Marking UDI Codes with Picosecond Laser
TECHNICAL FEATURES ADVANTAGES
Pulses last only 2ps and reach 10MW Peak power!

Some processes – such as high-contrast black marking and machomachining of various materials, that were unimaginable with the traditional infrared laser – are now possible.
We usually work with a frequency rate between 500 kHz and 100 kHz, while here the frequency range is from 50 kHz to 2000 kHz

Increased execution speed.
1030 nm wavelength, slightly lower than the traditional 1064 nm.

It is compatible with most of materials.
High beam quality (M2 = 1.2);

To increase energy density it has a smaller spot
Water cooling with a chiller.

The system remains stable over time
TECHNICAL FEATURES ADVANTAGES
Short pulse duration (2ps), reaching 10 MW peak power!
Some processes – such as high-contrast black marking and machomachining of various materials, that were unimaginable with the traditional infrared laser – are now possible.
Wide frequency range (from 50 kHz to 2000 kHz, we usually work with a frequency ranging between 500 kHz and 1000 kHz).
Increased execution speed.
1030 nm wavelength, slightly lower than the traditional 1064 nm.
Increased compatibility with materials.
High beam quality (M2 = 1.2).
Smaller spots for increased energy density.
Water cooling with a chiller.
Maximum system stability over time.

UDI codes on medical devices

Laser marking is the only safe technology when dealing with traceability and people’s lives. This does not alter the surface of the material and does not compromise the functionality of the instruments.

Laser marking in the medical industry follows a precise code system – called GS1-128 and GS1 Datamatrix – which contain the mandatory information for product traceability.

The code must also be visible to the human eye and should be applied to all categories of devices by law.

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GS1-128 LINEAR BARCODE (commonly used for UDI data capture)
udi-barcode-1024x338 Marking UDI Codes with Picosecond Laser
DI (Device Identifier)

DI is the mandatory part of the UDI code. It specifies the version and the model of the products

PI (Production Identifier)

PI is the variable part of the UDI code. It includes:

The Laser marking processes with which we apply these codes are:

  • Cold laser marking

    the oxide film remains intact, the surface is blackened

  • Laser engraving

    involves surface removal of the material

  • Annealing

    Laser marking obtained by surface heating, the surface is blackened

The code must also be fully visible to the human eye and must be applied to all categories of devices, which we can divide between:

Annealing: Impalpable black laser marking

In this article we will focus on the best Laser for achieving black, impalpable and reflection-free Laser marking on metal instruments. The Picosecond Laser is without a doubt the king of Annealing.

Annealing is a Laser marking process in which the material is heated on the surface and turns black. There is no removal of material or surface change. Nevertheless, the result is as indelible as ever when it comes to Laser marking.

With the Picosecond Laser, marking is black and reflection-free. Codes and markings on scalpels (or other instruments) will always be visible under whatever light you look at them. This is essential in the operating room.

Annealing-UDI Marking UDI Codes with Picosecond Laser
Medicale Marking UDI Codes with Picosecond Laser
The Picosecond laser: no oxidation

The Picosecond Laser does not oxidize and does not rust. At LASIT, we have an area of the laboratory dedicated to Salt Spray Tests to guarantee the resistance and quality of Laser markings on our customers’ products. The markings made with the Picosecond Laser have passed all tests.

The Picosecond Laser: Passivation-proof

Resistance to citric and nitric passivation cycles is another Test that the Picosecond Laser passes with flying colors. At LASIT, we test resistance to citric passivation through repeated stress cycles on the Laser marking. With the Picosecond Laser, codes do not fade but remain high-contrast black.

UDI-Code-Lsit-Laser-Marking Marking UDI Codes with Picosecond Laser

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Date: 01/03/2020

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