Rotablation represents an addition to the standard PCI procedure. While a standard PTCA procedure is limited to the use of balloons and stents, rotablation also uses a tiny drill, powered by compressed air, to remove calcified deposits. Breaking up the plaque restores blood flow to the heart. A catheter is introduced and advanced to the coronary artery. The guide wire is used to cross the stenosis inside the coronary artery. The drill head is used to remove plaque deposits. The burr (drill) is introduced into the artery through a catheter (tube) and after activation is passed through the narrowed portion up and down repeatedly until the block is scrapped and artery widened. Following this regular PCI is performed with stent and balloon.