all of the steps of example 5 with one exception in order to provide a balloon that bends during inflation all of the same steps were followed as in example 5 with the exception of eliminating the manual elongation step that immediately followed the longitudinal compression step that is at the point of being impregnated with silicone dispersion the film covered porous ptfe tube was 0 6 of its initial length instead of 0 8 as in example 5 a balloon catheter was constructed using this balloon the length of the balloon was 4 0 cm the bend of the balloon was tested by inflating the balloon to 8 atm and measuring the bend angle created by inflation measurements were made via the balloon aligned coincident with the 0 u00b0 scribe line of a protractor with the middle of the balloon positioned at the origin the bend angle was 50 u00b0 the balloon was then bent an additional 90 u00b0 and allowed to relax no kinking occurred even at 140 u00b0 the angle of the still inflated relaxed balloon stabilized at 90 u00b0 the balloon of an intact 6 mm diameter 4 cm long schneider match 35 pta catheter model no b506 412 was tested in the same manner the bend angle under 8 atm pressure was 0 u00b0 the inflated balloon was then bent to 90 u00b0 which created a.