Jain A, Demer L L, Raizner A E, Roberts R
Am J Cardiol. 1986 Jan 1;57(1):26-8. doi: 10.1016/0002-9149(86)90945-8.
It is a common conception that the balloons used in percutaneous transluminal coronary angioplasty will inflate to a certain designated diameter and maintain this diameter over the wide range of inflation pressures. With use of an optical magnification system, the diameters of multiple angioplasty dilating catheters made of polyvinyl chloride (USCI) and polyethylene (Advanced Cardiovascular System, Inc.) were measured with designated balloon diameter sizes of 2.0 to 3.7 mm. All balloons had a linear increase in diameter over a range of pressures from 2 to 10 atm. The average increase in diameter over this pressure range was 15% (range 7 to 18%). Polyvinyl chloride balloons reached their specified diameter at less than 5 atm and exceeded it at higher inflation pressures. Polyethylene balloons reached their specified diameter at 8 to 10 atm, and were below specified diameters at lower pressures. There was slight variation in size and only a minimal difference in compliance between balloons of the same material and size. A given balloon achieved the same diameter at a given pressure even after multiple inflations and maintained a stable diameter during prolonged inflations.
人们普遍认为，经皮腔内冠状动脉成形术使用的球囊会膨胀到某个指定直径，并在很宽的膨胀压力范围内保持该直径。使用光学放大系统，对指定球囊直径尺寸为2.0至3.7毫米的由聚氯乙烯（USCI）和聚乙烯（先进心血管系统公司）制成的多个血管成形术扩张导管的直径进行了测量。所有球囊在2至10个大气压的压力范围内直径呈线性增加。在此压力范围内直径的平均增加量为15%（范围为7%至18%）。聚氯乙烯球囊在低于5个大气压时达到其指定直径，在更高的膨胀压力下会超过该直径。聚乙烯球囊在8至10个大气压时达到其指定直径，在较低压力下低于指定直径。相同材料和尺寸的球囊在尺寸上有轻微变化，顺应性方面只有极小差异。即使多次膨胀，给定的球囊在给定压力下也能达到相同直径，并且在长时间膨胀过程中保持稳定直径。
