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Proceedings Paper

Coagulative and ablative characteristics of a novel diode laser system (1470nm) for endonasal applications
Author(s): C. S. Betz; M. Havel; P. Janda; A. Leunig; R. Sroka
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Paper Abstract

Introduction: Being practical, efficient and inexpensive, fibre guided diode laser systems are preferable over others for endonasal applications. A new medical 1470 nm diode laser system is expected to offer good ablative and coagulative tissue effects. Methods: The new 1470 nm diode laser system was compared to a conventional 940 nm system with regards to laser tissue effects (ablation, coagulation, carbonization zones) in an ex vivo setup using fresh liver and muscle tissue. The laser fibres were fixed to a computer controlled stepper motor, and the light was applied using comparable power settings and a reproducible procedure under constant conditions. Clinical efficacy and postoperative morbidity was evaluated in two groups of 10 patients undergoing laser coagulation therapy of hyperplastic nasal turbinates. Results: In the experimental setup, the 1470 nm laser diode system proved to be more efficient in inducing tissue effects with an energy factor of 2-3 for highly perfused hepatic tissue to 30 for muscular tissue. In the clinical case series, the higher efficacy of the 1470 nm diode laser system led to reduced energy settings as compared to the conventional system with comparable clinical results. Postoperative crusting was less pronounced in the 1470 nm laser group. Conclusion: The 1470 nm diode laser system offers a highly efficient alternative to conventional diode laser systems for the coagulation of hyperplastic nasal turbinates. According to the experimental results it can be furthermore expected that it disposes of an excellent surgical potential with regards to its cutting abilities.

Paper Details

Date Published: 26 February 2008
PDF: 5 pages
Proc. SPIE 6842, Photonic Therapeutics and Diagnostics IV, 68421Z (26 February 2008);
Show Author Affiliations
C. S. Betz, Ludwig Maximilian Univ. Munich (Germany)
M. Havel, Ludwig Maximilian Univ. Munich (Germany)
P. Janda, Ludwig Maximilian Univ. Munich (Germany)
A. Leunig, Ludwig Maximilian Univ. Munich (Germany)
R. Sroka, Ludwig Maximilian Univ. Munich (Germany)

Published in SPIE Proceedings Vol. 6842:
Photonic Therapeutics and Diagnostics IV
Kenton W. Gregory M.D.; Reza S. Malek M.D.; Nikiforos Kollias; Brian Jet-Fei Wong M.D.; Henry Hirschberg M.D.; Justus F. R. Ilgner M.D.; Steen J. Madsen; Guillermo J. Tearney M.D.; Bernard Choi; Haishan Zeng, Editor(s)

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