What two materials are used to make self expandable stents?
There are two broad categories of self-expandable stents: stents made from woven Elgiloy wires and stents laser-cut from nitinol tubes.
Self-expandable stents exert a continuous outward force, resist deformation, and are preferable to balloon-expandable stents in regions potentially subject to external compressive forces. To ensure full expansion, self-expandable stents are dilated with a balloon of appropriate diameter after deployment.
