Techniques to maximize flexible ureteroscope longevity
| العنوان: | Techniques to maximize flexible ureteroscope longevity |
|---|---|
| المؤلفون: | Brian K. Auge, Glenn M. Preminger, Alon Z. Weizer, Ari D. Silverstein, Paul K. Pietrow, Fernando C. Delvecchio, David M. Albala |
| المصدر: | Urology. 60:784-788 |
| بيانات النشر: | Elsevier BV, 2002. |
| سنة النشر: | 2002 |
| مصطلحات موضوعية: | medicine.medical_specialty, Time Factors, URETEROSCOPE, Endoscope, business.industry, Urology, Flexible ureteroscopy, Surgery, Ureter, medicine.anatomical_structure, Upper tract, Filling defect, Equipment Reuse, Hysteroscopes, Ureteroscopes, Fiber Optic Technology, Medicine, Equipment Failure, Prospective Studies, business, Optical Fibers, Flexible ureteroscope |
| الوصف: | Objectives To assess methods to improve the longevity and durability of flexible ureteroscopes by using the ureteral access sheath, 200-μm holmium laser fiber, and nitinol baskets or graspers during routine ureteroscopic procedures. Despite adequate advances in fiberoptics and endoscope design, the decreased size of currently available flexible ureteroscopes makes damage inevitable after repeated use. However, new auxiliary tools may be able to enhance ureteroscope durability. Methods The indications for performing flexible ureteroscopy were proximal ureteral stones (n = 32), renal calculi (n = 59), treatment of upper tract transitional cell carcinoma (n = 3), evaluation of hematuria or filling defect (n = 7), and treatment of ureteral strictures or ureteropelvic junction obstruction (n = 8). Using four new 7.5F flexible ureteroscopes, we prospectively evaluated the number of passes of each ureteroscope until more than 20 optical fibers were broken, more than a 25° loss of deflection in either direction had occurred, or the instrument sustained injury requiring repair by the manufacturer. Results One hundred nine flexible ureteroscopic procedures (average 27.5 procedures per instrument; range 19 to 34) were performed with the four new flexible ureteroscopes before being sent for repair. Adjuncts to reduce scope damage during these procedures were the use of the ureteral access sheath (n = 109), nitinol devices allowing lower pole stone retrieval (n = 27), and the 200-μm holmium laser fiber for stone fragmentation, tumor ablation, and incision of ureteropelvic junction/ureteral stenoses (n = 91). The average number of passes until more than 20 optical fibers were broken was 15.3 (range 12 to 20), until more than a 25° loss of deflection occurred was 50.3 (range 42 to 66), or until the scope required repair was 66.7 (range 46 to 82). Conclusions Flexible ureteroscopy will be used increasingly to manage upper urinary tract pathologic findings. Historically, the number of procedures performed before a flexible ureteroscope requires repair averaged 6 to 15. By incorporating the new ureteroscopic accessories, such as nitinol devices, a ureteral access sheath, and the 200-μm holmium laser fiber into common practice, one can reduce the strain on these fragile 7.5F endoscopes, thereby maximizing their longevity. |
| تدمد: | 0090-4295 |
| DOI: | 10.1016/s0090-4295(02)01948-9 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::572a02157321d9d060dfab5b8a9b4f3b https://doi.org/10.1016/s0090-4295(02)01948-9 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....572a02157321d9d060dfab5b8a9b4f3b |
| قاعدة البيانات: | OpenAIRE |
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Despite adequate advances in fiberoptics and endoscope design, the decreased size of currently available flexible ureteroscopes makes damage inevitable after repeated use. However, new auxiliary tools may be able to enhance ureteroscope durability. Methods The indications for performing flexible ureteroscopy were proximal ureteral stones (n = 32), renal calculi (n = 59), treatment of upper tract transitional cell carcinoma (n = 3), evaluation of hematuria or filling defect (n = 7), and treatment of ureteral strictures or ureteropelvic junction obstruction (n = 8). Using four new 7.5F flexible ureteroscopes, we prospectively evaluated the number of passes of each ureteroscope until more than 20 optical fibers were broken, more than a 25° loss of deflection in either direction had occurred, or the instrument sustained injury requiring repair by the manufacturer. Results One hundred nine flexible ureteroscopic procedures (average 27.5 procedures per instrument; range 19 to 34) were performed with the four new flexible ureteroscopes before being sent for repair. Adjuncts to reduce scope damage during these procedures were the use of the ureteral access sheath (n = 109), nitinol devices allowing lower pole stone retrieval (n = 27), and the 200-μm holmium laser fiber for stone fragmentation, tumor ablation, and incision of ureteropelvic junction/ureteral stenoses (n = 91). The average number of passes until more than 20 optical fibers were broken was 15.3 (range 12 to 20), until more than a 25° loss of deflection occurred was 50.3 (range 42 to 66), or until the scope required repair was 66.7 (range 46 to 82). Conclusions Flexible ureteroscopy will be used increasingly to manage upper urinary tract pathologic findings. Historically, the number of procedures performed before a flexible ureteroscope requires repair averaged 6 to 15. 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