Flexible ureteroscopes

A single center evaluation of the durability and function of the new endoscopes smaller than 9Fr

J. S. Afane, E. O. Olweny, E. Bercowsky, Chandru Sundaram, M. D. Dunn, A. L. Shalhav, E. M. McDougall, R. V. Clayman

Research output: Contribution to journalArticle

130 Citations (Scopus)

Abstract

Purpose: Flexible ureteroscopes smaller than 9Fr are widely used in endourology. We systematically evaluated the functional durability of these instruments in the clinical setting. Materials and Methods: We performed ureteronephroscopy 92 consecutive times in 84 patients at our hospital using a flexible Storz model 11274AA, Circon-ACMI model AUR-7, Wolf model 7325.172 and Olympus model URF/P3 ureteroscope. Preoperatively and postoperatively we evaluated all flexible ureteroscopes for luminosity, irrigant flow at 100 mm. Hg, number of broken image fibers and active deflection range. During the procedure a record was kept of the duration that the endoscope remained in the urinary tract, average irrigation pressure, method of insertion, various devices used within the working channel, need for lower pole access, and surgeon overall impression of visibility and maneuverability. Results: The luminosity and irrigant flow of all endoscopes remained relatively unchanged during consecutive applications, while active deflection deteriorated 2% to 28%. Endoscopes were used for an average of 3 to 13 hours before they needed repair. The most fragile part of these instruments was the deflection unit. Conclusions: Small diameter flexible ureteroscopes are effective for diagnosing and treating upper urinary tract pathology but improved durability is required. Currently they represent a highly effective but high maintenance means of achieving retrograde access to the ureter and kidney with a need for repair after only 6 to 15 uses.

Original languageEnglish (US)
Pages (from-to)1164-1168
Number of pages5
JournalJournal of Urology
Volume164
Issue number4
StatePublished - 2000
Externally publishedYes

Fingerprint

Ureteroscopes
Endoscopes
Urinary Tract
Ureter
Maintenance
Pathology
Kidney
Pressure
Equipment and Supplies

Keywords

  • Kidney
  • Kidney calculi
  • Ureter
  • Ureteral calculi
  • Ureteroscopy

ASJC Scopus subject areas

  • Urology

Cite this

Afane, J. S., Olweny, E. O., Bercowsky, E., Sundaram, C., Dunn, M. D., Shalhav, A. L., ... Clayman, R. V. (2000). Flexible ureteroscopes: A single center evaluation of the durability and function of the new endoscopes smaller than 9Fr. Journal of Urology, 164(4), 1164-1168.

Flexible ureteroscopes : A single center evaluation of the durability and function of the new endoscopes smaller than 9Fr. / Afane, J. S.; Olweny, E. O.; Bercowsky, E.; Sundaram, Chandru; Dunn, M. D.; Shalhav, A. L.; McDougall, E. M.; Clayman, R. V.

In: Journal of Urology, Vol. 164, No. 4, 2000, p. 1164-1168.

Research output: Contribution to journalArticle

Afane, JS, Olweny, EO, Bercowsky, E, Sundaram, C, Dunn, MD, Shalhav, AL, McDougall, EM & Clayman, RV 2000, 'Flexible ureteroscopes: A single center evaluation of the durability and function of the new endoscopes smaller than 9Fr', Journal of Urology, vol. 164, no. 4, pp. 1164-1168.
Afane, J. S. ; Olweny, E. O. ; Bercowsky, E. ; Sundaram, Chandru ; Dunn, M. D. ; Shalhav, A. L. ; McDougall, E. M. ; Clayman, R. V. / Flexible ureteroscopes : A single center evaluation of the durability and function of the new endoscopes smaller than 9Fr. In: Journal of Urology. 2000 ; Vol. 164, No. 4. pp. 1164-1168.
@article{7980d9cd49794d2e918990655b01a194,
title = "Flexible ureteroscopes: A single center evaluation of the durability and function of the new endoscopes smaller than 9Fr",
abstract = "Purpose: Flexible ureteroscopes smaller than 9Fr are widely used in endourology. We systematically evaluated the functional durability of these instruments in the clinical setting. Materials and Methods: We performed ureteronephroscopy 92 consecutive times in 84 patients at our hospital using a flexible Storz model 11274AA, Circon-ACMI model AUR-7, Wolf model 7325.172 and Olympus model URF/P3 ureteroscope. Preoperatively and postoperatively we evaluated all flexible ureteroscopes for luminosity, irrigant flow at 100 mm. Hg, number of broken image fibers and active deflection range. During the procedure a record was kept of the duration that the endoscope remained in the urinary tract, average irrigation pressure, method of insertion, various devices used within the working channel, need for lower pole access, and surgeon overall impression of visibility and maneuverability. Results: The luminosity and irrigant flow of all endoscopes remained relatively unchanged during consecutive applications, while active deflection deteriorated 2{\%} to 28{\%}. Endoscopes were used for an average of 3 to 13 hours before they needed repair. The most fragile part of these instruments was the deflection unit. Conclusions: Small diameter flexible ureteroscopes are effective for diagnosing and treating upper urinary tract pathology but improved durability is required. Currently they represent a highly effective but high maintenance means of achieving retrograde access to the ureter and kidney with a need for repair after only 6 to 15 uses.",
keywords = "Kidney, Kidney calculi, Ureter, Ureteral calculi, Ureteroscopy",
author = "Afane, {J. S.} and Olweny, {E. O.} and E. Bercowsky and Chandru Sundaram and Dunn, {M. D.} and Shalhav, {A. L.} and McDougall, {E. M.} and Clayman, {R. V.}",
year = "2000",
language = "English (US)",
volume = "164",
pages = "1164--1168",
journal = "Journal of Urology",
issn = "0022-5347",
publisher = "Elsevier Inc.",
number = "4",

}

TY - JOUR

T1 - Flexible ureteroscopes

T2 - A single center evaluation of the durability and function of the new endoscopes smaller than 9Fr

AU - Afane, J. S.

AU - Olweny, E. O.

AU - Bercowsky, E.

AU - Sundaram, Chandru

AU - Dunn, M. D.

AU - Shalhav, A. L.

AU - McDougall, E. M.

AU - Clayman, R. V.

PY - 2000

Y1 - 2000

N2 - Purpose: Flexible ureteroscopes smaller than 9Fr are widely used in endourology. We systematically evaluated the functional durability of these instruments in the clinical setting. Materials and Methods: We performed ureteronephroscopy 92 consecutive times in 84 patients at our hospital using a flexible Storz model 11274AA, Circon-ACMI model AUR-7, Wolf model 7325.172 and Olympus model URF/P3 ureteroscope. Preoperatively and postoperatively we evaluated all flexible ureteroscopes for luminosity, irrigant flow at 100 mm. Hg, number of broken image fibers and active deflection range. During the procedure a record was kept of the duration that the endoscope remained in the urinary tract, average irrigation pressure, method of insertion, various devices used within the working channel, need for lower pole access, and surgeon overall impression of visibility and maneuverability. Results: The luminosity and irrigant flow of all endoscopes remained relatively unchanged during consecutive applications, while active deflection deteriorated 2% to 28%. Endoscopes were used for an average of 3 to 13 hours before they needed repair. The most fragile part of these instruments was the deflection unit. Conclusions: Small diameter flexible ureteroscopes are effective for diagnosing and treating upper urinary tract pathology but improved durability is required. Currently they represent a highly effective but high maintenance means of achieving retrograde access to the ureter and kidney with a need for repair after only 6 to 15 uses.

AB - Purpose: Flexible ureteroscopes smaller than 9Fr are widely used in endourology. We systematically evaluated the functional durability of these instruments in the clinical setting. Materials and Methods: We performed ureteronephroscopy 92 consecutive times in 84 patients at our hospital using a flexible Storz model 11274AA, Circon-ACMI model AUR-7, Wolf model 7325.172 and Olympus model URF/P3 ureteroscope. Preoperatively and postoperatively we evaluated all flexible ureteroscopes for luminosity, irrigant flow at 100 mm. Hg, number of broken image fibers and active deflection range. During the procedure a record was kept of the duration that the endoscope remained in the urinary tract, average irrigation pressure, method of insertion, various devices used within the working channel, need for lower pole access, and surgeon overall impression of visibility and maneuverability. Results: The luminosity and irrigant flow of all endoscopes remained relatively unchanged during consecutive applications, while active deflection deteriorated 2% to 28%. Endoscopes were used for an average of 3 to 13 hours before they needed repair. The most fragile part of these instruments was the deflection unit. Conclusions: Small diameter flexible ureteroscopes are effective for diagnosing and treating upper urinary tract pathology but improved durability is required. Currently they represent a highly effective but high maintenance means of achieving retrograde access to the ureter and kidney with a need for repair after only 6 to 15 uses.

KW - Kidney

KW - Kidney calculi

KW - Ureter

KW - Ureteral calculi

KW - Ureteroscopy

UR - http://www.scopus.com/inward/record.url?scp=0033813137&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033813137&partnerID=8YFLogxK

M3 - Article

VL - 164

SP - 1164

EP - 1168

JO - Journal of Urology

JF - Journal of Urology

SN - 0022-5347

IS - 4

ER -