Preliminary evaluation of a pulsed 2.15-micron laser system for fiberoptic endoscopic surgery.
Identifieur interne : 000804 ( PubMed/Checkpoint ); précédent : 000803; suivant : 000805Preliminary evaluation of a pulsed 2.15-micron laser system for fiberoptic endoscopic surgery.
Auteurs : M R Treat [États-Unis] ; S L Trokel ; R D Reynolds ; V J Defilippi ; J. Andrew ; J Y Liu ; M G CohenSource :
- Lasers in surgery and medicine [ 0196-8092 ] ; 1988.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical : Silicon Dioxide.
- instrumentation : Laser Therapy.
- methods : Laser Therapy.
- pathology : Gastric Mucosa.
- surgery : Gastric Mucosa.
- Animals, Endoscopes, Endoscopy, Equipment Design, Evaluation Studies as Topic, Fiber Optic Technology, Hemostasis, Surgical, Rabbits.
Abstract
There is a need for lasers that are compatible with fiberoptic endoscopes and that provide greater cutting precision than currently can be produced by the widely used Nd:YAG (1.06 micron) laser. Recently available lasers that operate in the 2-micron region fill this need. This laser light energy can be transmitted by low OH- silica fibers and has much less tissue penetration than radiation at 1.06 micron. We have been evaluating a prototype solid state laser system that produces pulses of 2.15 microns light that is delivered by a silica based fiberoptic delivery system with negligible transmission losses. This system is based on a thulium-holmium-chromium doped YAG (Tm-Ho-Cr: YAG) rod that lases at 2.15 micron. The laser does not require cryogenic cooling, toxic gases, or custom utilities and should be practical in a clinical environment. In vivo animal testing of this laser confirms that it provides greater ablating precision than does the Nd:YAG laser at 1.06 micron.
PubMed: 2839746
Affiliations:
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pubmed:2839746Le document en format XML
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<country xml:lang="fr">États-Unis</country>
<placeName><region type="state">État de New York</region>
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<author><name sortKey="Reynolds, R D" sort="Reynolds, R D" uniqKey="Reynolds R" first="R D" last="Reynolds">R D Reynolds</name>
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<term>Equipment Design</term>
<term>Evaluation Studies as Topic</term>
<term>Fiber Optic Technology</term>
<term>Gastric Mucosa (pathology)</term>
<term>Gastric Mucosa (surgery)</term>
<term>Hemostasis, Surgical</term>
<term>Laser Therapy (instrumentation)</term>
<term>Laser Therapy (methods)</term>
<term>Rabbits</term>
<term>Silicon Dioxide</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Animaux</term>
<term>Conception d'appareillage</term>
<term>Endoscopes</term>
<term>Endoscopie</term>
<term>Hémostase chirurgicale</term>
<term>Lapins</term>
<term>Muqueuse gastrique ()</term>
<term>Muqueuse gastrique (anatomopathologie)</term>
<term>Silice</term>
<term>Technologie des fibres optiques</term>
<term>Thérapie laser ()</term>
<term>Thérapie laser (instrumentation)</term>
<term>Études d'évaluation comme sujet</term>
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<keywords scheme="MESH" type="chemical" xml:lang="en"><term>Silicon Dioxide</term>
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<keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Laser Therapy</term>
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<keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Laser Therapy</term>
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<keywords scheme="MESH" qualifier="pathology" xml:lang="en"><term>Gastric Mucosa</term>
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<term>Endoscopes</term>
<term>Endoscopy</term>
<term>Equipment Design</term>
<term>Evaluation Studies as Topic</term>
<term>Fiber Optic Technology</term>
<term>Hemostasis, Surgical</term>
<term>Rabbits</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Animaux</term>
<term>Conception d'appareillage</term>
<term>Endoscopes</term>
<term>Endoscopie</term>
<term>Hémostase chirurgicale</term>
<term>Lapins</term>
<term>Muqueuse gastrique</term>
<term>Silice</term>
<term>Technologie des fibres optiques</term>
<term>Thérapie laser</term>
<term>Études d'évaluation comme sujet</term>
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<front><div type="abstract" xml:lang="en">There is a need for lasers that are compatible with fiberoptic endoscopes and that provide greater cutting precision than currently can be produced by the widely used Nd:YAG (1.06 micron) laser. Recently available lasers that operate in the 2-micron region fill this need. This laser light energy can be transmitted by low OH- silica fibers and has much less tissue penetration than radiation at 1.06 micron. We have been evaluating a prototype solid state laser system that produces pulses of 2.15 microns light that is delivered by a silica based fiberoptic delivery system with negligible transmission losses. This system is based on a thulium-holmium-chromium doped YAG (Tm-Ho-Cr: YAG) rod that lases at 2.15 micron. The laser does not require cryogenic cooling, toxic gases, or custom utilities and should be practical in a clinical environment. In vivo animal testing of this laser confirms that it provides greater ablating precision than does the Nd:YAG laser at 1.06 micron.</div>
</front>
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<Title>Lasers in surgery and medicine</Title>
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<ArticleTitle>Preliminary evaluation of a pulsed 2.15-micron laser system for fiberoptic endoscopic surgery.</ArticleTitle>
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<Abstract><AbstractText>There is a need for lasers that are compatible with fiberoptic endoscopes and that provide greater cutting precision than currently can be produced by the widely used Nd:YAG (1.06 micron) laser. Recently available lasers that operate in the 2-micron region fill this need. This laser light energy can be transmitted by low OH- silica fibers and has much less tissue penetration than radiation at 1.06 micron. We have been evaluating a prototype solid state laser system that produces pulses of 2.15 microns light that is delivered by a silica based fiberoptic delivery system with negligible transmission losses. This system is based on a thulium-holmium-chromium doped YAG (Tm-Ho-Cr: YAG) rod that lases at 2.15 micron. The laser does not require cryogenic cooling, toxic gases, or custom utilities and should be practical in a clinical environment. In vivo animal testing of this laser confirms that it provides greater ablating precision than does the Nd:YAG laser at 1.06 micron.</AbstractText>
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