Marking Tapes

Marker bands are precision components that are extensively used in the medical technology industry, particularly in the manufacture of catheters and other minimally invasive devices. They function as radiopaque indicators that assist medical staff in visualising a device’s location within the body using imaging techniques such as X‑ray or fluoroscopy. Marker bands are typically produced from elements with high atomic numbers, for example Gold, Platinum or their alloys, to ensure sufficient imaging visibility.

Applications

• Medical Imaging: The bands enhance the visibility of medical devices during procedures and assist in accurate positioning.
• Interventional Procedures: They are used in cardiovascular, neurovascular and peripheral vascular interventions for guiding devices through complex vascular pathways.
• Surgical Instruments: They are incorporated in various surgical instruments to maintain clear visibility and precise operation.

Materials

• Gold (Au): It has high radiographic visibility and biocompatibility. It is used as a standard material for many medical applications.
• Platinum (Pt): It offers high radiation opacity and strong mechanical properties. It is used in devices that require improved visibility and strength.
• Platinum-Iridium Alloy (Pt-Ir): It is a blend that combines the radiographic visibility of Platinum with the hardness of Iridium. It provides increased durability and clarity.
• Tantalum (Ta): This metal exhibits high radiopacity and corrosion resistance. Its visibility under X‑rays is maintained without compromising the integrity of the device.
• Tungsten (W): It shows high density and radiographic visibility. It is employed in applications where cost efficiency is as important as visibility.
• Palladium (Pd): This noble metal offers suitable radiographic visibility and biocompatibility. It is used in specialised medical devices in view of its distinctive properties.

Manufacturing Techniques

• Electroforming: A method used to produce high-precision marker bands under strict dimensional tolerances.
• Machining: A process applied to fabricating custom shapes and sizes, suitable for small series or specialised applications.
• Laser Cutting: This technique permits design flexibility and accuracy, making it appropriate for complex geometries.

Quality and Compliance

Ensuring the quality and compliance of marker bands is crucial given their medical applications. Manufacturers adhere to strict standards such as ISO 13485 for medical devices and comply with regulatory bodies including the FDA (Food and Drug Administration) and the CE marking for European conformity.