Split Marker Bands: Platinum Iridium Parts for Micro Medical Device Applications

Split markerbands are precision micro-machined radiopaque components engineered for accurate placement on catheters, guidewires, and other delicate medical devices. The split design allows the band to flex during assembly, accommodating slight shaft diameter variations while minimizing stress and potential damage. Micro-machining ensures tight tolerances and consistent surface quality, enabling reliable mechanical retention and optimal imaging visibility. By combining manufacturing precision with design flexibility, split markerbands enhance device performance and simplify assembly in minimally invasive procedures. This article explores the benefits and applications of split markerbands across different design requirements and functions

See our split markerbands sized down to just 0.1mm OD and 0.025mm thick!

  • Material: Platinum-Iridium
  • Outer Diameter: 0.1mm to 3.0 mm
  • Thickness: 0.025mm to 0.15 mm

Why Use Platinum Iridium Slit Markerbands?

1. Easier assembly
  • Slide-on capability: The slit allows the band to expand slightly so it can be placed over larger or irregular components without requiring swaging force.
  • Over-molding / secondary assembly: Split bands can be mounted after other features are already built, reducing manufacturing complexity.
2. Secure mechanical fit
  • Compression for retention: The split permits the band to flex and grip the polymer shaft or mandrel, improving mechanical fixation and reducing the risk of slippage.
  • Reduced reliance on adhesives: Sometimes eliminates or reduces the need for glue or thermal bonding.
3. Dimensional flexibility
  • Tolerance compensation: A split band can accommodate slight variations in shaft diameter better than a closed band.
  • Expandable fit: Useful when you need a snug fit but can’t guarantee exact shaft size consistency.
4. Reduced risk of shaft damage
  • Gentler installation: A swaged solid marker band can damage thin-walled or soft polymer shafts. Split bands reduce hoop stress during placement.
5. Radiopacity with design freedom
  • Same visualization benefits as solid marker bands, but with easier integration into thin or delicate devices.

Applications: Slit vs. Solid Markerbands

Slit Markerbands

Thin or delicate catheter shafts
  • When swaging a solid band could collapse or kink the shaft.
Late-stage assembly or secondary placement
  • When the marker must be added after other features are already installed.
Variable shaft tolerances
  • Split bands can flex to accommodate shaft-to-shaft variation.
Temporary positioning or prototyping
  • Easier to install and remove compared to permanently swaged bands.
Applications needing less aggressive retention
  • E.g., marker bands that will be encapsulated by polymer (over-molded balloons, distal catheter tips).

Solid Markerbands

High mechanical stability required
  • Stent delivery systems or balloon catheters where the marker must not migrate.
High radial strength or rigidity needed
  • Solid bands resist deformation better than split ones.
Flush profile requirements
  • Eliminates gaps that could snag tissue or increase friction.
Permanent, swaged fit
  • Secure fixation without adhesives or overmolding.
Devices requiring multiple retractions or torque transfer
  • Solid bands perform better in repeated mechanical loading.

Looking for Split Markerbands For Your Design?

We manufacture micro components and assemblies in accordance with Medical Device and ISO regulations.

  • Extensive Quality Management Systems
  • ISO Certified
  • In Stock Parts Ship in 2~3 Business Days
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