Durability of laser fibers

In 90 patients treated with laser prostatectomy using the Urolase (n = 50) or Ultraline (n = 40) laser fiber, the fiber-tip durability was investigated. In general the Urolase fiber tips were less damaged than the Ultraline fiber tips. At visual inspection, 62% of the Urolase fiber tips were graded...

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Bibliographic Details
Published in:World journal of urology 1995-04, Vol.13 (2), p.83-87
Main Authors: te Slaa, E, van Ettergem, A F, van 't Hof, C A, Debruyne, F M, de la Rosette, J J
Format: Article
Language:English
Subjects:
Equipment Design
Equipment Safety
Humans
Laser Therapy - instrumentation
Laser Therapy - methods
Male
Middle Aged
Prostatectomy - methods
Prostatic Hyperplasia - surgery
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Summary:In 90 patients treated with laser prostatectomy using the Urolase (n = 50) or Ultraline (n = 40) laser fiber, the fiber-tip durability was investigated. In general the Urolase fiber tips were less damaged than the Ultraline fiber tips. At visual inspection, 62% of the Urolase fiber tips were graded as minimally damaged in comparison with 28% of the Ultraline group. The Urolase fiber tips are more susceptible than the Ultraline fiber tips to damage caused by tissue contact, whereas the latter seem more fragile. Transmission measurements were performed in a laboratory setting to estimate the loss of energy output at the fiber tip due to damage. These measurements showed a major loss in almost all fibers. None of the Ultraline fibers had less than 10% transmission loss, and 18% of the Urolaser fibers had a transmission value of more than 90%. Finally, there seemed to be a poor correlation between the visual aspects of the fibers used and the changes in transmission.
ISSN:0724-4983
1433-8726
DOI:10.1007/BF00183619