| 摘要 |
<p>A dilation balloon (4) for medical use formed of a major amount of a crystallizable polymer such as high molecular weight polyethylene terephthalate with an intrinsic viscosity greater than about 0.7, and a relatively minor amount of an additive polymer that interrupts the crystalline structure of the crystalline polymer in the final product. The final product is a blend that when formed into a balloon (4), exhibits advantageous properties of softness, i.e., compliance and a low folded profile, yet achieves high hoop stress and consequently high burst pressures. The balloon in the deflated state will thus yield when challenged by the wall of the lumen yet can be inflated to high pressure for performing the dilatation procedure with reduced risk of burst.</p> |
