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Nitinol Machining for Precision Applications Using Spirit® Femtosecond Lasers

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Nitinol Machining for Precision Applications Using Spirit® Femtosecond Lasers

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Some metal alloys are known to exhibit superelasticity and shape memory behaviors. These unique material properties of shape-memory alloys (SMA) are due to their ability to undergo phase transformations between martensite and austenite when subjected to temperature changes and/or external loadings and recover upon reversal of such. Nitinol, comprised of nearly equal parts Nickel and Titanium, is an SMA with excellent biocompatibility, in large part due to its good corrosion resistance. Its unique properties make it an ideal candidate for modern-day implantable medical devices such as neurovascular stents, heart valve frames, and orthodontic archwires. These advancements in medical device technologies have been made possible not only by the use of Nitinol material but also because of advancements in stateof-the-art laser technologies for manufacturing these devices.

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