What is the definition or description of: heart stent?

Expand. steel tube..: A heart stent is a small, 2.25-4.5 mm diameter (when expanded) stainless steel tube. The walls are cut with a laser, into varying patterns due to patent designs. They are compressed onto a balloon catheter that is advanced over a very small wire, (0.014" diam.) to the site of blockage, then the balloon is inflated with liquid, deploying the stent, at pressures up to 10-20 psi. It won't move.

Metal lattice : A stent is a metal tube type lattice placed into a artery collapsed and deployed in an open position to hold the plaque and artery open. A geary stent is one placed into an artery in the heart.