Open AccessFactors affecting the durability of flexible ureteroscopes: An academic center review
Author(s) -
Natsirin Hongviboonvate,
Siros Jitprapai,
Thawatchai Mankongsrisuk,
Tawatchai Taweemonkongsap,
Varat Woranisarakul,
Chaiyong Nualyong
Publication year - 2020
Publication title -
insight urology
Language(s) - English
Resource type - Journals
ISSN - 2730-3217
DOI - 10.52786/a.13
Subject(s) - ureteroscopy , durability , scope (computer science) , medicine , ureteroscope , laser lithotripsy , lithotripsy , surgery , biomedical engineering , computer science , materials science , ureter , composite material , programming language
Objective: To analyze the factors which affect the durability of the flexible ureteroscope and the causes of scope damage in a single academic center.Material and Method: Between March 2014 and August 2017, 479 flexible ureteroscopic procedures, using 6 flexible ureteroscopes (Olympus model URF-V), were systematically reviewed. Data including indication for procedures, auxiliary device usage, the characteristics of scope damage, and the number of times a scope was used before requiring major repair were gathered. Fisher exact test and Chi-square test were used to evaluate the factors which caused the damage.Results: The major flexible ureteroscopic procedure performed was treatment of renal calculi (81%). The most common auxiliary device used was the Holmium laser (70%). The most common cause of damage requiring repair was working channel leakage (93%). The factor that affected the durability of flexible ureteroscopes was the size of laser fiber. Utilizing laser fiber 200 nm decreased scope damage significantly compared to various other sizes (p-value=0.002 and p-value<0.001). However, the usage of nitinol basket and ureteral access sheath did not affect the durability of flexible ureteroscopes.Conclusion: Large laser fibers are a risk factor for flexible ureteroscope damage. Utilizing small laser fibers during flexible ureteroscopy can decrease scope damage significantly.