Abstract: A balloon suitable for use in a catheter for carrying out a method for angioplasty consists of a middle cylindrical region and two end regions delimiting the middle cylindrical region. The balloon, with a pressure application of 6 bar, has a ratio of the cross section in the middle region to the cross sections in the two end regions of at least 2, and preferably greater than 3. The balloon can have a balloon wall thickness in the middle cylindrical region that is greater than or equal to a balloon wall thickness in the two end regions and is preferably more than 10% thicker than a balloon wall thickness in the two end sections.

Abstract: A method for producing a balloon from a suitable blank is provided. The blank is introduced into an outer mold heated an first expanded to expand it against the inner wall of the outer mold. Pressure is reduced to relax the blank away from the inner wall. The three-dimensional volume of the mold is changed. Second expanding of the blank expands again against the inner wall of the changed volume of the outer mold. Balloons of the invention consist of a middle cylindrical region and two end regions delimiting the middle cylindrical region. With a pressure application of 6 bar, a ratio of the cross section in the middle region to the cross section in the end region is at least 2, and preferably greater than 3.

Abstract: A method for producing a balloon from a suitable blank is provided. The blank is introduced into an outer mold heated an first expanded to expand it against the inner wall of the outer mold. Pressure is reduced to relax the blank away from the inner wall. The three-dimensional volume of the mold is changed. Second expanding of the blank expands again against the inner wall of the changed volume of the outer mold. Balloons of the invention consist of a middle cylindrical region and two end regions delimiting the middle cylindrical region. With a pressure application of 6 bar, a ratio of the cross section in the middle region to the cross section in the end region is at least 2, and preferably greater than 3.