biomedical textiles, specializing in braided and
nonwoven components for medical devices.
Nitinol Shape Memory Alloy
Nitinol nickel-titanium alloy (NiTi) is a unique shape memory alloy. A thermoelastic martensitic phase transformation in its crystal structure give it its outstanding shape memory and superelastic qualities.
When cooled from its stronger, higher temperature austenite form to its weaker, lower temperature martensite form, nitinol undergoes a phase transformation. In its martensitic form, it is easily formed into new shapes, but when heated past its transformation temperature, it regains its austenite form and quickly reverts to its original shape. When deformed at a temperature that is slightly above its transformation temp, small quantities of stress-induced martensite form above the normal temperature; once the stress is removed, it immediately reverts to underformed austentite. This process gives nitinol a springy, rubberlike superelasticity.
One of the primary medical uses of nitinol funnels is the removal of blood clots from blood vessels. In this process, a nitinol funnel is retracted into the end of a cardiology catheter, where it constricts into the catheter’s tube shape. The catheter is directed to the site of the occlusion, the nitinol funnel is extended, and the material’s shape memory causes it to expand to nearly the full diameter of the blood vessel. The expanded nitinol funnel surrounds and captures the clot, and is then withdrawn back into the catheter. The catheter is then removed, taking blood clot with it.
Braided Nitinol Components
Nitinol can be produced in wire form as thin as just a few hundred micrometers and can be used on its own or combined with other biomedical textiles to create braided shapes for numerous medical applications. Braided and shaped nitinol components are commonly used in:
- Endoscopic tube guidewires
- Distal protection
- and more
Funnel-shaped Nitinol Braid
Double-tapered Braided Nitinol Tube
Sample kit of braided shapes and wire types
Elongated funnel-shaped Nitinol Braid
World-Class Manufacturers of Braided Nitinol Shapes
US BioDesign is an industry leading manufacturer of braided nitinol shapes and nitinol funnels. Our innovative design and engineering processes enable us to deliver shaped nitinol biomedical components that meet our customers’ specifications and exceed their expectations.
We will work with your engineering team to develop custom nitinol funnels and braided nitinol components that match your exact requirements. From the earliest development stages through final production, we can step in at any point to help make your project a success. We have world-class manufacturing capabilities, many of which are unique in the industry, that guarantee the quality, consistency, and precision of your biomedical products. We areISO 13485:2016 registered.
US BioDesign encourages formal, mutual Non-Disclosure Agreements, and guarantees confidentiality regarding all customer designs and product information.
Contact Us for Custom Nitinol Funnels & Braided Nitinol Shapes
We focus on innovation, speed, and cost efficiency to give you the best custom biomedical components for your application, on your schedule, at competitive prices. Request a quote or contact US BioDesign to start your project or to learn more about what we can do with braided nitinol. Additionally, please browse our Virtual Sample Kit for inspiration from samples of our technology.