DFT® Nitinol flat wire

DFT® Nitinol flat wire integrates Nitinol's shape memory and superelastic performance with a radiopaque core in a flat wire form, ultimately providing both device flexibility and improved visibility under X-ray.


Understanding the benefits

The better healthcare professionals can see a device on an X-ray, the better they can detect and treat medical issues. And yet, medical providers have long dealt with an ongoing problem: limited visibility of devices under X-ray. Nitinol wire, while offering shape memory and superelasticity, requires radiopaque markers to be visible during examinations. However, our teams recently leveraged our capability to use dissimilar materials in a single wire system with the introduction of DFT® Nitinol flat wire.

Here's how it works: Nitinol serves as the outer sheath with platinum as the core, enabling users to view the entire medical device under X-ray and virtually eliminating the need for attaching radiopaque markers. This benefit of improved radiopacity now, available in a flat wire form, also means increased device strength while retaining equivalent material thickness.


Potential end uses

  • Catheters
  • Braided stents
  • Aneurysm coils


Design specifications

Grade/fill ratios

  • NiTi #1-DFT-10%Pt
  • NiTi #1-DFT-20%Pt
  • NiTi #1-DFT-30%Pt

Size range

  • Minimum thickness 0.0127 mm [0.0005 in]
  • Maximum width 0.762 mm [0.030 in]
  • W/T ratio minimum 2:1, maximum 5:1


  • Straight annealed
  • Hard

Surface finish

  • Light oxide
  • Dark oxide
  • Etched
  • Oxide free