Product showcase
quality Parylene C coating for implantable applications with BarrierMax.
Dexter Magnetic Technologies
www.dextermag.com
Custom-etched metal components
Fotofab works with more than 35 types of metal alloys.
Fotofab has delivered the highest-quality custom-etched metal components to the medical industry for more than 50 years. Its manufacturing technique of photochemically etching sheet metal uses acids to fabricate more precise components. With other techniques, like laser etching or metal- stamping, the fine lines needed in a microscreen or the delicate intricacies of implantable parts cannot be made to the tight tolerances and sheet thinness that Fotofab can provide. The company’s process of chemical metal-etching offers centre-to- centre tolerances within 0.0005ins, maintaining the metal’s full integrity. Fotofab’s portfolio includes a diverse product line of elaborately detailed pieces with complex geometries or simple parts like washers and shielding components. Some are quick-turn prototypes and others are standardised for large production runs year after year, such as: ■ RF shields ■ titanium implant parts ■ stainless steel blades ■ surgical needle threaders
The company’s process begins when a component drawing is submitted for a quote. Its dedicated team of
technical engineers review the request to guarantee metal type, capability and timing needed. Once dimensions are agreed upon and approved, the metal can be etched in a matter of hours. This results in consistent parts, on time and within budget. Along with photochemical etching, Fotofab offers an array of finishing services for the fabricated parts, including: ■ forming ■ electropolishing ■ passivation ■ plating (standard and precious metals)
As a full-service provider, Fotofab works with more than 35 types of metal alloys, including titanium, tungsten, and Elgiloy. It is ISO
9001:2015-certified and RoHs compliant, committed to the quality of its products, and the satisfaction of its customers.
Fotofab
www.fotofab.com
A colourful
challenge requiring multiple laser wavelengths
2022, the European Chemicals Agency banned thousands of chemicals used in ink for colour tattoos in response to concerns over allergic reactions and a possible cancer link. This has brought colourful tattoos into the spotlight as people reevaluate the risks. However, erasing full colour tattoos is a much more complicated procedure than removing “traditional” black ink tattoos. Laser wavelengths are a key factor. By delivering short duration, high-power pulses of light energy, lasers in tattoo removal devices break ink particles in the skin. Different colours absorb and reflect light differently, so if the ink doesn’t absorb the light sufficiently, it won’t fragment. This all depends on the wavelength of the laser beam. Therefore, multi- wavelength systems are required to enable aesthetic and medical practitioners to treat color inks tattoos. These powerful and versatile machines incorporate photonics technologies to achieve effective and safe color tattoo removal.
Pockels Cells are a vital part in the removal of tattoos using laser.
The trend for “getting inked” as a form of self-expression continues to be popular in many parts of the world. One in eight Europeans have a tattoo, with the figure doubling among young adults. The US is another tattoo hotspot. In 2021, around 26% of Americans had a tattoo. There’s concern about colour tattoos, however. In January
Medical Device Developments /
www.nsmedicaldevices.com
One of the most important photonic components for success in laser tattoo removal is the Pockels cell – like those made by photonics company G&H – particularly in relation to wavelength. Pockels cells effectively act as a Q-switch to modulate the laser beam. Meanwhile, the choice of crystal optics used in the device determines the all-important wavelength. The best crystals are those that utilise proprietary crystal growth, fabrication, polishing and coating techniques under one roof to ensure quality and performance.
Removing colourful tattoos safely and effectively depends on being able to control laser pulses at different wavelengths.
G&H
www.gandh.com
A bigger VCM with even more force
Geeplus’ new coil can achieve more force than its predecessor.
In response to customers requiring even higher force, Geeplus have developed a bigger voice coil motor. The new VM75P2, like its predecessors, uses a highly optimised magnet assembly to produce exceptional force/mass ratio for high acceleration in dynamic applications, the new VM75P2 is one of a new generation of voice coil motors from Geeplus capable of providing a significant increase in performance. The two-pole device develops higher force and acceleration with shorter displacement. The Geeplus designed and manufactured coil can be modified to provide an even longer stroke and higher force if required.
Ideally suited to highly dynamic applications where a load mass is required to accelerate very quickly, such as vibration, optical shutter operation or pick and place mechanisms, the VM75P2 provides greater force from a given coil assembly than that developed in a pot or traditional ‘sandwich’ construction, with the same excitation power. This means that with an unchanged coil mass, a 30–50% higher acceleration can be achieved.
Geeplus
www.geeplus.com
When contact is not an option Introtek’s IntroPro non-invasive occlusion free-entry detection
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