An examination of the physical characteristics leading to angioplasty balloon rupture.

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Abstract
Six polyvinyl chloride and 6 polyethylene angioplastly balloons were inflated 6 times each under laboratory conditions. Outside diameter of the balloons was measured on initial and final inflations; volume was measured by water displacement at each inflation. Three balloons in either group were constricted with a silk suture around the midportion. Balloons were then intentionally ruptured and the rupture site recorded. The diameters of the polyvinyl chloride balloons increased over 6 inflations, while they remained relatively constant for the polyethylene balloons. Rupture sites were in the area of the balloon that had the greatest outside diameter and the tears were longitudinal.

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