A little balloon at the conclusion of the catheter is inflated to open the narrowed artery. A steel stent is inserted to avoid the artery from narrowing again.   There is a trouble with info submitted for this ask for. Evaluate/update the information highlighted underneath and resubmit the form. From https://www.sgvascularctr.com/revealing-the-latest-innovations-in-carotid-artery-disease-treatment/