Why is this Tiny Spring One of the Most Extreme Pieces of Engineering?

In the context of cardiovascular interventions, the term mesh or springs refers to the intricate, lattice-like tubular structure of the stent designed to provide mechanical "scaffolding" to an occluded artery.

Laser micro-cutting is the core manufacturing process for producing these cardiovascular and endovascular stents: this high-precision technique involves carving intricate mesh structures into small-diameter metal tubes (typically 1–5 mm) with extremely thin walls.