A CoNiCr-Nitinol Composite Wire for Guidewire Type Applications
Fort Wayne Metals has released a composite wire technology with integrated proximal-to-tip guidewire performance in mind. One critical area in medical device practice is in vascular access guidewires. Many workhorse, 0.3302 mm to 0.3556 mm [0.013 in to 0.014 in], guidewires use a stiff material body (often stainless or CoNiCr) for control and a superelastic Nitinol tip for flexible navigation. The combination of properties for these hybrid wires is often used for effective navigation to aspects of the heart, brain, and vessels of the legs.
On the other hand, the joining of stiff materials to superelastic materials (such as Nitinol) is a tricky and often expensive art requiring robust mastery. Fort Wayne Metals has released a new wire material technology balancing the stiffness properties needed for proximal control with superelastic distal performance in an integrated composite. The 35N LT®-DFT®-NiTi wire utilized a high strength CoNiCr shell over a superelastic Nitinol core that can be tuned in size for tip exposure during profile core grinding. Read up further on our composite technology produced with guidewire performance in mind here:
If you have questions, or want to know more about other projects and innovations, we'd like to hear from you. Please contact us: RDTeam1@fwmetals.com
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Disclaimer: Our updates are sneak peeks of what our R&D department is working on. This is not meant to imply that we have what is referenced above ready for robust serial manufacture.
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