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Proceedings Paper

Laser-assisted neuroendoscopy using Nd:YAG and diode contact laser with black fiber tips
Author(s): Rudolf M. Verdaasdonck; Peter Vandertop; Wessel Ansink; Christiaan F. P. van Swol
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Paper Abstract

Although lasers have proven to be valuable in neuroendoscopy, surgeons still do not feel comfortable using high-energy laser endoprobes in close proximity to vital structures. A special laser catheter was developed with an atraumatic ball-tip which was pretreated with a layer of carbon particles absorbing 90% of the energy. The temperature at the surface of this 'black' tip reaches ablative temperatures instantly at powers of only a few watts within one second. This drastically limits the laser power and the length of exposure needed, increasing safety, even around critical structures. The characteristics of the 'black' tips were studied using a thermal imaging technique, showing heat just in front of the tip in contrast to uncoated fiber tips. These 'black' tips were applied in combination with Nd:YAG and diode lasers in 41 patients and a variety of procedures: third ventriculocisternostomy (n equals 27), cyst fenestration (n equals 8), colliod cyst resection (n equals 5) and fenestration of the septum pellucidum (n equals 1). Power ranged from 0.5 to 5 W and the average total energy for ventricular fenestration was 160 J. There was no mortality, nor increased morbidity. The procedure success rate was 100% and the overall outcome success rate was 90%. 'Black' atraumatic ball-shaped fiber tips are safe and effective in a variety of neuro-endoscopic procedures. Due to the low power range of only several watts, compact diode lasers are the energy source of first choice.

Paper Details

Date Published: 22 May 1997
PDF: 8 pages
Proc. SPIE 2970, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII, (22 May 1997); doi: 10.1117/12.275094
Show Author Affiliations
Rudolf M. Verdaasdonck, Univ. Hospital Utrecht (Netherlands)
Peter Vandertop, Univ. Hospital Utrecht (Netherlands)
Wessel Ansink, Univ. Hospital Utrecht (Netherlands)
Christiaan F. P. van Swol, Univ. Hospital Utrecht (Netherlands)


Published in SPIE Proceedings Vol. 2970:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII
R. Rox Anderson; Harvey Lui; Michail M. Pankratov; Kenneth Eugene Bartels; Gerhard J. Mueller; Graham M. Watson; Reza S. Malek; Lawrence S. Bass; Lloyd P. Tate; Hans-Dieter Reidenbach; Kenneth Eugene Bartels; R. Rox Anderson; Lawrence S. Bass; Aaron P. Perlmutter; Kenton W. Gregory; David M. Harris; David M. Harris; Harvey Lui; Reza S. Malek; Gerhard J. Mueller; Michail M. Pankratov; Aaron P. Perlmutter; Hans-Dieter Reidenbach; Lloyd P. Tate; Graham M. Watson, Editor(s)

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