Catheter devices/systems and methods therefrom are described herein for treating acute kidney injury, especially the contrast-induced acute kidney injury wherein the devices may prevent the contrast dyes from entering into kidney and/or facilitate blood flow of kidney by said catheter system.本文描述了用於治療急性腎損傷,特別是造影劑誘導的急性腎損傷的導管裝置/系統及其方法,其中所述裝置可以通過所述導管系統防止造影染料進入腎臟和/或促進腎臟的血流。