Division of Urology, Department of Surgery Related, Kobe University Graduate School of Medicine, Hyogo, Japan.
Department of Urology and Stone Center, Hara Genitourinary Hospital, Tyuou-ku, Kitanagasa-tori 5-7-17, Kobe, Hyogo, 650-0012, Japan.
World J Urol. 2021 Jan;39(1):209-215. doi: 10.1007/s00345-020-03151-w. Epub 2020 Mar 14.
To compare the range of reach of our newly designed omni-directional ureteroscope (URF-Y0016), compared to the commonly used URF-P6, FlexX2s, and LithoVue™ scopes, in the upper, middle, and lower calyces in an ex-vivo pyelocaliceal model.
We fabricated a three-dimensional pyelocaliceal model of the upper, middle, and lower pole calyces using urethane and acrylic resin. The inner surface of the dome of each calyx was engraved with reference lines along eight directions, set at 10° of latitude from the top to the base of the dome, and at angles of 0-90°, to precisely determine the range of reach of each scope. The main feature of the URF-Y0016 scope is the omni-directional bending of the tip of the flexible ureteroscope, with the control of these four directions integrated into a handgun-type control unit with a joystick. The range of reach within each calyx was measured by four expert surgeons.
The URF-Y0016 scope provided a greater range of reach along all directions in the lower pole calyx compared to URF-P6, FlexX2s, and LithoVue™ scopes (p < 0.001), particularly along the anterior-posterior direction in the lower lobe calyx. However, the URF-Y0016 scope did not influence the improvement of reach range in the upper and middle pole calyx compared to URF-P6, FlexX2s, and LithoVue™ scopes (p = 0.08, p = 0.296).
The novel design of the URF-Y0016 could improve treatment outcomes for calyceal stones in the lower pole in practice.
在尸体肾盂肾盏模型中，比较我们新设计的全方位输尿管镜（URF-Y0016）与常用的 URF-P6、FlexX2s 和 LithoVue™ 输尿管镜在上、中、下盏肾盂中的可达范围。
我们使用聚氨酯和丙烯酸树脂制造了上、中、下盏肾盂的三维肾盂肾盏模型。每个肾盂穹顶的内表面沿八个方向刻有参考线，从穹顶顶部到底部设置为 10°的纬度，角度为 0-90°，以精确确定每个镜的可达范围。URF-Y0016 输尿管镜的主要特点是其柔性输尿管镜尖端的全方位弯曲，这些四个方向的控制集成到一个带有操纵杆的手枪式控制单元中。四个专家外科医生测量了每个肾盂中的可达范围。
与 URF-P6、FlexX2s 和 LithoVue™ 输尿管镜相比，URF-Y0016 输尿管镜在所有方向上在下盏肾盂中的可达范围更大（p<0.001），尤其是在下盏肾盂的前后方向。然而，与 URF-P6、FlexX2s 和 LithoVue™ 输尿管镜相比，URF-Y0016 输尿管镜对中上盏肾盂可达范围的改善没有影响（p=0.08，p=0.296）。
URF-Y0016 的新颖设计可能会改善实践中下盏肾盂结石的治疗效果。
