Department of Urology, Wujin Hospital Affiliated with Jiangsu University, Changzhou, 213004, China.
Department of Urology, The Wujin Clinical College of Xuzhou Medical University, Changzhou, 213004, China.
World J Urol. 2022 Feb;40(2):585-591. doi: 10.1007/s00345-021-03863-7. Epub 2021 Oct 23.
We developed a Postural Drainage Lithotripsy System (PDLS) that uses the patient's computed tomography urography (CTU) data to reconstruct the three-dimensional figure of the renal pelvis, provides an individualized inversion and overturning angle and uses gravity to remove residual fragments (RFs). The purpose of this study was to investigate PDLS in the treatment of renal RFs.
A stone with a diameter of 4.0 mm was placed in the upper, middle, and lower calyx of the renal model. A total of 60 trials were applied to 20 renal models. The movement trajectory, passage rate, and postural drainage angle of calculi during the treatment of PDLS were observed.
All of the stones in 60 trials were observed to move during treatment, and 53/60 (88%) were relocated successfully to the renal pelvis. The passage rate of the upper calyx was 14/20 (70%), that of the middle calyx was 20/20 (100%), and that of the lower calyx was 19/20 (95%).
PDLS can provide individualized inversion and reversal angles and remove stones from the renal model. More clinical trials are needed to verify the above view and evaluate its efficacy.
我们开发了一种体位引流碎石系统（PDLS），该系统使用患者的计算机断层尿路造影（CTU）数据来重建肾盂的三维形态，提供个体化的翻转角度，并利用重力去除残余碎片（RFs）。本研究旨在探讨 PDLS 治疗肾 RFs 的效果。
在肾模型的上、中、下盏各放置一个直径为 4.0mm 的结石，对 20 个肾模型进行了 60 次试验。观察 PDLS 治疗过程中结石的运动轨迹、通过率和体位引流角度。
60 次试验中所有结石均观察到运动，其中 53/60（88%）成功重新定位到肾盂。上盏结石通过率为 14/20（70%），中盏结石通过率为 20/20（100%），下盏结石通过率为 19/20（95%）。
PDLS 可提供个体化的翻转和反转角度，并从肾模型中去除结石。需要更多的临床试验来验证上述观点并评估其疗效。
