Fig. 1

Sinus guard-wire technology. Ostial lesion of the right coronary artery, the main guide wire was passed through the lesion to the distal, the second guard wire was placed in the right aortic sinus. The Sinus guard-wire technique for an ostial bifurcation lesion of the right coronary artery. (1): the main guide wire was passed through the lesion to the distal, and the second guard wire was placed within the right aortic sinus. (2): the stent is placed into the guide catheter over both the main wire and the guard wire which resides in the other branch. (3): The stent is placed into the ostial lesion. (4): The stent advancement is stopped by the guard wire, and then, deployed at low atmospheres. The guard wire is then removed, and the stent is deployed at high atmospheres