Abstract: Provided is an expansible catheter balloon that has a spreadable outer diameter controllable easily in treatments for a calcific aortic stenosis, rheumatic and congenital aortic stenoses and others, and that can be effectively prevented from being freely shifted and can easily be fixed at a predetermined position. The catheter balloon includes a balloon having shoulder parts made of a non-expansible material or made low-expansible and an expandable waist part, and a catheter having a catheter body to which this balloon is fitted.

Abstract: Provided is an expansive catheter balloon that has a spreadable outer diameter controllable easily in treatments for a calcific aortic stenosis, rheumatic and congenital aortic stenosis and others, and that can be effectively prevented from being freely shifted and can easily be fixed at a predetermined position. The catheter balloon includes a cylindrical balloon part that is made non-expansive or low-expansive, and a band part made of a stretchable elastic body. When a stretching force is not applied, the band part has a shorter diameter than a spread diameter of the balloon part and is wound around the center of the balloon part.

Abstract: The external surface of a balloon for IABP balloon catheter is designed to have a rough surface occupying an area of 10 to 80% both inclusive of the whole of the external surface, and a smooth surface occupying an area of 90 to 20% both inclusive thereof. The supplied balloon for IABP balloon catheter is certainly unwrapped by a predetermined balloon pressure from a driving machine, with no need to conduct any preloading process, and further which is not unwrapped before and during the insertion of the catheter even in the state that a wrapping sheath is removed.