At the Medical Technology UK exhibition in Coventry last week, Fintek showed how automated mass and super finishing technologies are advancing the precision of implant and medical device surfaces.

The medical industry demands continual surface improvements to ensure the safety and effectiveness of surgical instruments, tibias, femoral shafts, prosthetic sockets, bone screws, bone plates and more. Precision surface finishing is a vital post-process in their manufacture as it enhances performance, safety and lifespan in use.

Fintek is the exclusive UK agent for the sales of OTEC Präzisionsfinish GmbH drag-finishing and electro-chemical finishing machines. According to the company, these two technologies excel at automating in-house medical device finishing. The company also provides a full subcontract service, with its experienced technical team using the latest equipment from OTEC.

Medical devices and implants made from stainless steel, cobalt chrome, titanium and ceramics can reach surface smoothness values to Ra 0.01 μm. Using drag finishing and electro-chemical technology, this is achieved quickly, with repeatable precision and quality, reports Fintek. Inconsistencies often associated with hand finishing are eliminated.

Improving surface finishing significantly improves the biocompatibility of medical devices by creating a smoother and more uniform surface. Especially important for implants and prosthetics in contact with body tissues for extended periods. A smoother surface is less likely to harbour bacteria, lowering the risk of infection in surgical settings.

Medical devices are often in contact with bodily fluids and sterilisation processes. Smoother surfaces enhance corrosion resistance, ensuring they remain durable and safe over time. Surface smoothness also lowers friction and improves wear resistance, extending implant lifespan and maintaining the device’s effectiveness. Surface finishing also enhances mechanical properties such as fatigue strength.

More information www.fintek.co.uk