经肾下盏、肾盂、输尿管倒U形切口取石,并作侧侧倒U形切口吻合的手术方法适用于以下情况:(1)肾下盏结石伴下盏引流不畅;(2)延伸到肾下盏的肾盂鹿角形结石,尤其是肾内型肾盂患者;(3)下盏结石伴肾盂或近肾门处输尿管狭窄. 按原有方法做该手术常遇到一些困难:(1)下盏扩张不明显,肾实质较厚的患者在切开下盏内侧肾实质时出血较多,止血较困难.故一般应游离整个肾脏,并阻断肾蒂甚至需原位冰冻下进行;(2)例U形吻合 The kidney under the lamp, the renal pelvis, ureteral inverted U-shaped incision to take stone, and side inverted U-shaped incision anastomosis surgical method is suitable for the following situations: (1) inferior calyx calculi accompanied with poor drainage; (2) Renal pelvis antraglitic calculus, especially in patients with intra-renal pyelonephritis; (3) lower calyces with renal pelvis or proximal ureter ureteral stenosis. According to the original method to do the surgery often encounter some difficulties: (1) under Flare expansion is not obvious, thick parenchyma patients in the lower incision medial renal parenchyma bleeding more difficult to stop bleeding, it should generally free the entire kidney, and even blocking the renal pedicle need to be frozen in situ; ) Case U-shaped anastomosis