Society for Biomaterials Special Interest Group (SIG)
Cardiovascular Biomaterials

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In this section we will discuss some of the biocompatible metals that are used in the cardiovascular device applications. The most commonly used metal is 'Nickel Titanium' which is called as 'Nitino' (Nickel Titanium Naval Ordnance Laboratory). This is shape memory alloy. This means that when a stent made of this metal is crushed into a catheter (of diameter ~ 4mm) it is not undergoing permanent elastic deformation. Thus when such a stent is deployed by a catheter into an artery by balloon expansion, it will come back to its original shape.

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