Abstract
A new IABP balloon is a standard single chamber type and its volume is 35cc. The length of it is 71cm. The outer annular lumen of the balloon catheter is 12F in size, and is used for inflation and deflation of the balloon. The inner lumen of it is 7F in diameter and permits the insertion of a guiding catheter for CAG or PTCA. The bottom has a Y-shaped connector and is attached with a one-way valve and a side lumen just as a regular sheath introducer. The material of the balloon is polyurethane. We experienced seven patients who were applied PTCA and twenty patients CAG with the intraaortic balloon pump, and no complications related to CAG, PTCA and IABP were observed.