Medical technology places the highest demands on materials, manufacturing processes, and supply chains. Components must perform reliably over the long term, withstand extreme conditions, and at the same time comply with the strictest regulatory requirements. Precious metals play a central role in this context.
Advantages of Precious Metals for MedTech
Precious metals such as platinum, iridium and gold occupy a key position in modern medical technology. Their properties – high biocompatibility, corrosion resistance, electrical conductivity and radiopacity – make them indispensable materials for active implants, sensors and electrodes for neurostimulation.
A decisive advantage of platinum-iridium alloys is their exceptional chemical stability in bodily fluids. They do not release unwanted ions and are therefore particularly biocompatible – a central aspect for long-term implants in the fields of neurostimulation, cardiac pacemakers or catheter systems.
The precious metal specialist C.HAFNER manufactures platinum-iridium alloys according to recognized standards such as ASTM B684, which optimally meet the application-specific requirements for hardness, strength and surface quality and ensure reliable component performance over their entire service life – even in direct contact with tissue and bodily fluids.
Applications in Medical Technology
In areas such as electrophysiology, neurostimulation, cardiac stimulation as well as catheter and diagnostic systems – wherever extreme miniaturization meets maximum functional reliability – micro-precision precious metal components are essential.
Typical products are:
• Electrode rings and tips
• Precious metal wires and pins
• Solder rings
• Antennas and markers
• Connectors
These are characterized by thin wall thicknesses, delicate boreholes and extremely small diameters.
Miniaturization in medical technology enables outstanding performance while minimizing the required installation space. Maximum dimensional accuracy and surface quality are decisive for reliable function in active implants and minimally invasive systems.
Components for Medical Assemblies
C.HAFNER supplies customer-specific manufactured components that can be directly integrated into medical assemblies. These include, among others:
• Electrodes & electrode rings made primarily of platinum-iridium alloys with minimal dimensions: for signal acquisition, stimulation and energy transmission
• Platinum pins and fine gold solder rings for hermetically sealed feedthroughs: crucial for the electrical connection between the implant housing and the internal electronic system
• Marker bands and micro wires: for catheter navigation, signal transmission and visibility under fluoroscopy
• Antennas and connectors for implantable electronics: miniaturized contact surfaces and geometries
Manufacturing Technologies – Micrometer?Level Precision
C.HAFNER masters the entire process chain – from refining and material development to the precise final production of components. Among others, the following are used:
• CNC machining in turning and milling centers
Long turning, short turning as well as 3- and 5-axis milling enable maximum precision.
• Micro stamping and laser cutting
For accurate contours and burr-free cutting edges.
• Powder production
Spherical powders through gas atomization as well as defined particle sizes for specific applications.
• Additive manufacturing
Powder bed-based 3D printing of precious metal alloys for material-efficient realization of complex geometries.
• Advanced analytics and quality assurance
Material characterization using metallographic methods, mechanical testing such as hardness or tensile tests as well as optical analysis through light and electron microscopy ensure reproducible quality.
Fully Integrated Supply Chain – Quality and Efficiency from a Single Source
C.HAFNER offers a uniquely integrated process – from CO?-neutral refining through alloy development and semi-finished production to precise final production of components using a broad technology portfolio. This creates a closed material cycle – efficient, transparent and secure. Instead of sourcing semi-finished products, further processing them and subsequently returning up to 90% of the input material as scrap, manufacturers at C.HAFNER receive finished components with short delivery times. This reduces both capital commitment as well as process and material losses.
The advantages:
• Optimized assembly production: less internal processing effort for our customers
• Lower logistics costs: minimized transport, packaging and inspection processes
• No additional recycling costs: precious metal handling including material recycling takes place internally at C.HAFNER
• Minimal precious metal tied up in production processes: significantly lower raw material financing costs
Conclusion
Precious metal components are the functional core elements of modern medical technology. With precisely defined materials, micrometer?level manufacturing accuracy and a fully integrated value chain, C.HAFNER is a reliable partner for component solutions with the highest requirements. Through the close interlinking of application development, analytics, production and recycling, stable processes, reproducible quality and maximum transparency are created along the entire value chain.