Abstract

Purpose

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.

Methods

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.

Results

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).

Conclusion

The novel design of the URF-Y0016 could improve treatment outcomes for calyceal stones in the lower pole in practice.

中文翻译：

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使用 JOYSTICK 装置 (URF-Y0016) 评估具有全方位弯曲尖端的输尿管软镜：一项离体研究

摘要

目的

比较我们新设计的全向输尿管镜 (URF-Y0016) 与常用的 URF-P6、FlexX2s 和 LithoVue™ 内窥镜在离体的上、中和下肾盏中的范围肾盂模型。

方法

我们使用氨基甲酸乙酯和丙烯酸树脂制作了上、中和下极花萼的三维模型。每个花萼穹顶的内表面沿八个方向刻有参考线，从穹顶顶部到底部的纬度为10°，角度为0-90°，以精确确定可达范围每个范围的。URF-Y0016 示波器的主要特点是可弯曲输尿管镜尖端的全方位弯曲，将这四个方向的控制集成到带有操纵杆的手枪式控制单元中。每个花萼内的触及范围由四位专家外科医生测量。

结果

与 URF-P6、FlexX2s 和 LithoVue™ 内窥镜 ( p  < 0.001)相比，URF-Y0016 内窥镜在下极花萼的所有方向上都提供了更大的覆盖范围（p < 0.001），尤其是在下叶萼的前后方向上。然而，与 URF-P6、FlexX2s 和 LithoVue™ 内窥镜相比，URF-Y0016 内窥镜不影响上极和中极花萼的可达范围的改善（p  = 0.08，p  = 0.296）。

结论

URF-Y0016 的新颖设计可以在实践中改善下极肾盏结石的治疗结果。