Department of Radiology, Ajou University School of Medicine, Ajou University Hospital, Suwon, Republic of Korea.
Cardiovasc Intervent Radiol. 2024 Sep;47(9):1278-1285. doi: 10.1007/s00270-024-03716-x. Epub 2024 Apr 19.
This experimental study was designed to compare radial forces between the central portion and both ends of balloon catheters when dilating stenosis.
Three balloon catheters of 6 and 8 mm in diameter and of variable length were tested: Mustang, Conquest, and Genoss PTA. Cylindrical modules to position balloon catheters and install the measuring tip during radial force measurements were made using a 3D printer. The measuring tip created 20% stenosis at the inner lumen. Both ends and center of the balloon catheter were located at the measuring tip. The radial force was measured after inflating the balloon catheter to the rated burst pressure.
For the different diameters and lengths of balloon catheters and cylinder sizes, the median inccenter, the radial rease in radial force at the distal end compared to the center was 16.5% (range: 9.8-35.2%) for Mustang, 12.4% (range: 10.3-25.5%) for Genoss, and 7.4% (range: -0.3-13.1%) for Conquest balloon catheters. Similarly, compared to that at the force at the proximal end was 10.8% greater (range: -2.9-18.3%) for Mustang, 9.9% greater (range: 3.9-22.3%) for Genoss, and 7.3% greater (range: -1.3-12.4%) for Conquest catheters.
The radial force is greater at both ends of the balloon than at the central portion, especially at the distal end. Dilation using the distal end of the balloon catheter is a practical method that can be applied in clinical practice without additional devices when encountering resistant stenosis, especially with semi-compliant balloons.
本实验研究旨在比较球囊导管扩张狭窄时中部与两端的径向力。
测试了三种直径为 6 和 8 毫米、长度可变的球囊导管：Mustang、Conquest 和 Genoss PTA。使用 3D 打印机制造了用于定位球囊导管和安装测量尖端的圆柱形模块，以进行径向力测量。测量尖端在管腔内部创建了 20%的狭窄。球囊导管的两端和中心都位于测量尖端处。在将球囊导管充气至额定爆破压力后测量径向力。
对于不同直径和长度的球囊导管和圆柱尺寸，Mustang 球囊导管的远端与中心相比，径向力增加的中位数为 16.5%（范围：9.8-35.2%），Genoss 球囊导管为 12.4%（范围：10.3-25.5%），Conquest 球囊导管为 7.4%（范围：-0.3-13.1%）。同样，与近端相比，Mustang 球囊导管的径向力增加了 10.8%（范围：-2.9-18.3%），Genoss 球囊导管增加了 9.9%（范围：3.9-22.3%），Conquest 球囊导管增加了 7.3%（范围：-1.3-12.4%）。
球囊的两端的径向力大于中部，尤其是远端。在遇到阻力性狭窄时，尤其是使用半顺应性球囊时，可以使用球囊导管的远端进行扩张，这是一种实用的方法，无需额外的设备即可在临床实践中应用。
