What are 3 uses for Nitinol?
Nitinol is used to manufacture catheter tubes, guidewires, stone retrieval baskets, filters, needles, dental files and archwires and other surgical instruments (6). A particularly important use of Nitinol is in stents.
What are two applications of Nitinol wire?
Applications for Nitinol Wire
- Heat engines.
- Resilient glass frames.
- Orthodontic arc wire.
- Medical devices.
- Actuators.
- High-reliability couplings.
- Temperature control system couplings.
What are the biomedical applications of Nitinol?
Biomedical applications that utilize Nitinol include stents, heart valve tools, bone anchors, staples, septal defect devices and implants. It is a commonly used biomaterial especially in the development of stent technology.
What products are made from Nitinol?
Nitinol Heat Engine.
Why is Nitinol useful?
Nitinol was developed by the U.S. Navy and stands for nickel titanium alloy. This metal is particularly useful for medical applications because it has thermal memory. This property allows stents to be made at a certain diameter, cooled, and then compressed onto a delivery system.
What makes Nitinol so special?
Nitinol is a metal alloy of nickel and titanium with unique properties, including superelasticity or pseudoelasticity and “shape memory” properties. That means nitinol can remember its original shape and return to it when heated. It also shows great elasticity under stress.
What are three unique properties Nitinol?
What are some properties of Nitinol that make it so biocompatible for medical use?
Compared with stainless steel and carbon fiber reinforced carbon, NiTi shape memory alloy has better biocompatibility and lower biological degeneration. Nitinol alloy has good corrosion resistance and good histocompatibility. It is a safe and promising biomedical material.
Why is Nitinol difficult?
It is difficult to make Nitinol due to the exceptionally tight compositional control required and the high reactivity of titanium. Every atom of titanium that combines with oxygen or carbon, is an atom taken from the Nitinol lattice, thus shifting the transformation temperature lower.
Why is Nitinol a smart material?
Shape-memory alloys (SMA) are metal alloys that can remember their shape when heated. These alloys have been utilised on spectacle frames that spring back to shape if they are squashed. Nickel titanium (nitinol ) is a type of SMA, and it contracts when heated, whereas most metals expand.
Why is Nitinol super elastic?
Those two facets of its structure – shape memory and superelastic properties – allow Nitinol to exhibit a reversible response to an applied stress which itself is caused by a phase transformation between the austenitic and martensitic phases of a crystal.
How does Nitinol remember its shape?
When a shape memory alloy is in its martensitic form, it is easily deformed to a new shape. However, when the alloy is heated through its transformation temperatures, it reverts to austenite and recovers its previous shape with great force. This process is known as shape memory.