Patent ID: 8430844

Claim:
A balloon catheter, comprising: a) an outer shaft with a distal end and a fluid line; b) an inner part located distal anterior to its distal end; and c) a balloon that can be inflated under the influence of a fluid that has been pressurized by the fluid line, that is fastened fluid-tight onto a first end section of outer shaft with a first fastening zone at its proximal end, and fluid-tight onto the inner part at its distal end with a second fastening zone; characterized by, that the balloon, on at least one of its two ends is designed without cone and with essentially unvarying thin wall thickness, the balloon is provided at least on one of its two ends with respectively one twist anterior to its fastening zone, and a second balloon is placed over the first balloon and is also provided with a twist on at least one of its two ends anterior to the fastening zone, that is directed in the opposite direction of the twist of the first balloon that is positioned underneath.