Law Yu Xi Terence, Tan Yi Quan, Aung Htoo Ei Ei, So Wei Zheng, Lau Shu-En Rachel, Kwok Jia-Lun, Yuen Steffi Kar Kei, Cho Sung Yong, Inoue Takaaki, Somani Bhaskar Kumar, Tiong Ho Yee, Gauhar Vineet
Department of Urology, National University Hospital, 1E Kent Ridge Road, Singapore, 119228, Singapore.
Division of Urology, Ng Teng Fong General Hospital, Singapore, Singapore.
World J Urol. 2025 Jul 11;43(1):426. doi: 10.1007/s00345-025-05812-0.
The primary aim was to study the in-vitro suction performance of three different Flexible and Navigable Suction Ureteral Access Sheaths (FANS) of two sizes each. The secondary aim was to study the impact of digital occlusion versus thumb sliders on suction performance.
We used the 7.5Fr single-use Flexible Ureterorenoscope from Innovex Medical (US27F-12-EU). The six FANS used were: 10/12Fr and 11/13Fr Innovex 40 cm FANS, ClearPetra 46 cm FANS, and Reborn 40 cm FANS. Time taken to suction 100 ml saline was measured. To test efficiency of stone suction, 1000mm of 1 to 2 mm stones were distributed equally between the upper and lower poles of a kidney model.
All three 11/13Fr FANS had suction rates three times faster than their 10/12Fr counterparts (p = 0.001 for all FANS), when digital occlusion was used. Innovex and Clearpetra FANS had faster suction rates than Reborn FANS when suctioning 100 ml saline, for both 10/12Fr and 11/13Fr. For the Innovex FANS, there was no difference in suction rate when using the thumb slider or digital occlusion. However, Reborn FANS had slower suction rates when using the thumb slider compared to digital occlusion for both 10/12Fr and 11/13Fr sizes. Innovex FANS was the fastest in suctioning upper pole calculi, followed by Clearpetra FANS, and Reborn FANS the slowest for 10/12Fr (198s versus 237s versus 537s respectively, p < 0.001) and 11/13Fr (158s versus 174s versus 332s respectively, p < 0.001). 10/12Fr and 11/13Fr Reborn FANS were not able to reach the lower pole calculi. Between Clearpetra and Innovex, there was no significant difference in time taken to suction lower pole calculi.
Faster suction was achieved with 11/13Fr instead of 10/12Fr FANS. With digital occlusion, the Innovex and Clearpetra FANS both performed similarly better in their suction performance than the Reborn FANS.
主要目的是研究三种不同尺寸（每种尺寸有两种规格）的可弯曲可导航输尿管吸引鞘（FANS）的体外吸引性能。次要目的是研究数字闭塞与拇指滑块对吸引性能的影响。
我们使用了Innovex Medical公司（US27F - 12 - EU）的7.5Fr一次性可弯曲输尿管肾镜。所使用的六种FANS分别是：10/12Fr和11/13Fr的Innovex 40 cm FANS、ClearPetra 46 cm FANS以及Reborn 40 cm FANS。测量吸入100 ml生理盐水所需的时间。为测试结石吸引效率，将1000mm的1至2mm结石平均分布在肾脏模型的上极和下极之间。
当使用数字闭塞时，所有三种11/13Fr的FANS的吸引速度比其10/12Fr的同类产品快三倍（所有FANS的p值均为0.001）。在吸入100 ml生理盐水时，对于10/12Fr和11/13Fr规格，Innovex和Clearpetra FANS的吸引速度比Reborn FANS快。对于Innovex FANS，使用拇指滑块或数字闭塞时吸引速度没有差异。然而，对于10/12Fr和11/13Fr规格，Reborn FANS使用拇指滑块时的吸引速度比数字闭塞时慢。在吸入上极结石方面，Innovex FANS最快，其次是Clearpetra FANS，Reborn FANS最慢，10/12Fr规格分别为198秒对237秒对537秒（p < 0.001），11/13Fr规格分别为158秒对174秒对332秒（p < 0.001）。10/12Fr和11/13Fr的Reborn FANS无法到达下极结石。在Clearpetra和Innovex之间，吸入下极结石所需时间没有显著差异。
11/13Fr的FANS比10/12Fr的FANS实现了更快的吸引。使用数字闭塞时，Innovex和Clearpetra FANS在吸引性能方面均比Reborn FANS表现得同样更好。
