Stents – From time to time, the atherosclerotic plaque is rather cumbersome and narrows the artery lumen almost immediately once the balloon is deflated. In such situations, a stent (wire mesh-like tube) might be inserted to keep the lumen open. The stent remains inside the vessel and isn't taken off. https://sgvasculargrp.com/medical-condition/carotid-arterial-disease/