HEALTHCARE

What healthcare demands from surface engineering

Whether we’re talking about implantable components, prosthetics, surgical instruments or equipment used in sterile environments, reliability is everything – and the surface treatment used plays a defining role in how a part performs over time. It influences friction, wear, corrosion behaviour, cleanability and how reliably a mechanism moves across repeated cycles.

In other words, surface treatment isn’t a finishing step. It’s often crucial to functional design.

That’s one reason the healthcare sector has little tolerance for variation. Patients matter. Performance matters. Repeatable outcomes matter. There’s no margin for error.

What reliable surface performance looks like in healthcare

Medical components are demanding on surfaces. Parts may be exposed to repeated cleaning cycles, sterilisation processes, moisture, bodily fluids, and dissimilar materials interacting over long periods of use. In this context, corrosion resistance and surface stability aren’t ‘nice to have’ features – they’re often fundamental to reliable operation and consistent performance.

So when it comes to surface treatments, a quality-first approach is needed. Coating choices need to be driven by what the component must deliver and endure, and then backed by disciplined process control and validation.

In practical terms, surface solutions in healthcare often need to support:

• Reduced friction for smoother movement and adjustability
• Improved wear resistance for long service life
• Corrosion protection for exposure to harsh cleaning and moisture
• Surfaces designed for cleanliness and resistance to build-up
• Repeatability across batches, where there is zero room for variation

Wear slowly removes material. Even tiny losses can make parts less precise, less smooth and less reliable. That’s why wear resistance is such an important factor in medical components that need to last.

The technology shift in prosthetics

Prosthetics is a particularly useful lens for understanding how healthcare requirements are evolving, because it sits at the intersection of performance engineering and real-world, long-term use.

Across the market, the shift in technology is accelerating:

• More sophisticated mechatronic control (microprocessor knees, powered ankles, myoelectric control) which increases the importance of consistent mechanical performance and reliable interfaces over time
• Additive manufacturing (3D printing) for customised components and sockets, speeding up iteration and personalisation
• Advanced materials (lightweight alloys and composites) to reduce weight and improve comfort, which can introduce new wear/corrosion challenges that need a surface ‘answer’
• Osseointegration and improved bone interfaces, which increase the focus on surface bioactivity and long-term stability at the interface

None of this makes surface treatment ‘the headline’. But it does make it more central. As prosthetics become lighter, smarter and more personalised, surfaces have to deliver performance without compromising longevity.

Partnership delivers consistent performance

When you’re selecting a surface treatment partner in a medical context, it’s important to really consider what a specific instrument or component will need to deliver and endure over its working life. For example:

• How is the component or device used day to day, and what surfaces is it rubbing or moving against?
• What are the wear and friction risks?
• What working conditions will it be exposed to such as cleaning, sterilisation, moisture, fluids or temperature?
• Which materials are in contact, and how do they behave together over time?
• What evidence is needed to prove performance, and how will repeatability be assured?

For medical and healthcare applications, these questions form the foundation of a reliable outcome. And the best results tend to come from a partnership approach, where the surface treatment route is defined collaboratively at the outset.

In practice, that often means starting with structured discussions or workshops early in the process – bringing together the right people to the table (design engineers, quality engineers, manufacturing teams and surface treatment specialists) to work through the real operating conditions, critical interfaces and tolerance constraints.

From there, the work becomes a structured, iterative process – define the challenge clearly, select the most appropriate route, validate performance through evidence, then refine and tighten parameters until outcomes are repeatable.

At Poeton, our retained expertise is a key part of making that process more efficient – because we have the ability to spot risk early, ask the right questions, and recognise where small variables can undermine consistency later.

The goal is to avoid surprises downstream. When the problem is properly defined early on, you reduce rework, shorten iteration cycles, and end up with a surface treatment route that delivers consistent quality, batch after batch.

Matching choice of surface treatment to the required outcome

There’s no single ‘best’ surface treatment in healthcare. The right choice depends on the component, environment, performance requirement and risk profile. And of course, it depends on the outcome you’re trying to achieve.

At Poeton, we produce a wide range of coatings to meet the performance demands of various medical, pharmaceutical and healthcare products. With an unrivalled laboratory facility underpinning our sophisticated coating technology, we can offer:

• Non-stick, ultra clean surfaces
• Resistance to abrasion by medical products or packaging materials
• Protection from metal-to-metal sliding wear in medical machinery
• Strong corrosion protection
• Reduced friction in product handling equipment
• Medical contact compliant coatings

But the important point is that surface performance is defined by the desired outcome, and then how the route is selected, controlled, validated and made repeatable in the context the component will actually operate in.

Quality, validation and control

Healthcare tends to have a heightened standard of quality because the expected service life is often long and the consequences of failure can be very serious. As James Poeton puts it, “Once a procedure is implemented, you want it to last a long time without needing further intervention – especially for prosthetics, where longevity, wear resistance and low friction are key.”

That’s why quality systems, validation, and process control matter so much. It’s not just about meeting a specification once, but ensuring the same outcome time after time, with clear evidence and tight control of the variables that drive performance.

Rely on our expertise

If you’re developing medical devices or prosthetics where friction, wear, corrosion protection and repeatability really matter, contact Poeton. We’d be more than happy to share how we approach quality assurance and repeatability for medical and healthcare applications.