Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips

Rudolf M. Verdaasdonck, Peter Vandertop, Wessel Ansink, C. F P Van Swol

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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.

LanguageEnglish
Title of host publicationLaser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips
Pages591-598
Number of pages8
Volume2970
DOIs
Publication statusPublished - 1 Dec 1997
Externally publishedYes
EventLasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII - San Jose, CA, United States
Duration: 8 Feb 19978 Feb 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
ISSN (Print)0277-786X

Conference

ConferenceLasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII
CountryUnited States
CitySan Jose, CA
Period08/02/199708/02/1997

Cite this

Verdaasdonck, R. M., Vandertop, P., Ansink, W., & Van Swol, C. F. P. (1997). Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. In Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips (Vol. 2970, pp. 591-598). (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.275094
Verdaasdonck, Rudolf M. ; Vandertop, Peter ; Ansink, Wessel ; Van Swol, C. F P. / Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. Vol. 2970 1997. pp. 591-598 (Proceedings of SPIE - The International Society for Optical Engineering).
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title = "Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips",
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.",
keywords = "Contact tip, Diode laser, Endoscopy, Fiber delivery, Hydrocephalus, Nd:YAG laser, Neurosurgery, Thermal imaging, Third ventriculocisternostomy",
author = "Verdaasdonck, {Rudolf M.} and Peter Vandertop and Wessel Ansink and {Van Swol}, {C. F P}",
year = "1997",
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Verdaasdonck, RM, Vandertop, P, Ansink, W & Van Swol, CFP 1997, Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. in Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. vol. 2970, Proceedings of SPIE - The International Society for Optical Engineering, pp. 591-598, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII, San Jose, CA, United States, 08/02/1997. https://doi.org/10.1117/12.275094

Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. / Verdaasdonck, Rudolf M.; Vandertop, Peter; Ansink, Wessel; Van Swol, C. F P.

Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. Vol. 2970 1997. p. 591-598 (Proceedings of SPIE - The International Society for Optical Engineering).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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AU - Vandertop, Peter

AU - Ansink, Wessel

AU - Van Swol, C. F P

PY - 1997/12/1

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N2 - 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.

AB - 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.

KW - Contact tip

KW - Diode laser

KW - Endoscopy

KW - Fiber delivery

KW - Hydrocephalus

KW - Nd:YAG laser

KW - Neurosurgery

KW - Thermal imaging

KW - Third ventriculocisternostomy

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Verdaasdonck RM, Vandertop P, Ansink W, Van Swol CFP. Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. In Laser-assisted neuroendoscopy using NdYAG and diode contact laser with black fiber tips. Vol. 2970. 1997. p. 591-598. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.275094