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In vitro comparison of thulium‐holmium‐chromium:YAG and argon ion lasers for welding of biliary tissue

Identifieur interne : 003C99 ( Main/Exploration ); précédent : 003C98; suivant : 003D00

In vitro comparison of thulium‐holmium‐chromium:YAG and argon ion lasers for welding of biliary tissue

Auteurs : Mehmet C. Oz [États-Unis] ; Lawrence S. Bass [États-Unis] ; Howard W. Popp [États-Unis] ; Roy S. Chuck [États-Unis] ; Jeffrey P. Johnson [États-Unis] ; Stephen L. Trokel [États-Unis] ; Michael R. Treat [États-Unis]

Source :

RBID : ISTEX:CD581DB7A05598F1DD157E8DA5F72085D536BC84

Descripteurs français

English descriptors

Abstract

Laser welding offers several potential advantages over suture closure, including improved healing, lack of a nidus for stone formation, and greater speed and ease. We examined in vitro gallbladder cystic duct welds created by two different systems, the thulmium‐holmium‐chromium (THC):YAG (2,150 nm) and argon ion (488–514 nm) lasers, in an effort to define suitable parameters for tissue fusion. Mean bursting pressures for argon welds were 95 mm Hg at 1.5 W CW and 26 mm Hg at 1.5 W, 50 msec chopped delivery. For the THC:YAG laser, the mean bursting pressure for welds created with 300 mJ pulses was 45 mm Hg. Full‐thickness tissue fusion and limited collateral thermal damage were observed histologically for both the CW argon and pulsed THC:YAG welds. Examination of the suggested mechanisms of tissue fusion for these photothermal lasers suggests that increased duration of tissue heating at the appropriate temperature results in more extensive collagen crosslinking and a stronger weld.

Url:
DOI: 10.1002/lsm.1900090307


Affiliations:


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Le document en format XML

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<term>Absorption curve</term>
<term>Amorphous coagulum</term>
<term>Animals</term>
<term>Argon</term>
<term>Argon laser</term>
<term>Argon lasers</term>
<term>Arterial pressure tubing</term>
<term>Bile</term>
<term>Bile spectrum</term>
<term>Biliary tract</term>
<term>Canine bile</term>
<term>Coherent corporation</term>
<term>Collagen</term>
<term>Collagen molecules</term>
<term>Collateral damage</term>
<term>Comparative study</term>
<term>Continuous exposure</term>
<term>Cystic Duct (injuries)</term>
<term>Cystic Duct (surgery)</term>
<term>Deionized water</term>
<term>Digestive diseases</term>
<term>Dog</term>
<term>Dogs</term>
<term>Energy exposure</term>
<term>Experimental surgery</term>
<term>Gallbladder</term>
<term>Gallbladder (surgery)</term>
<term>Gallbladder tissue</term>
<term>Gas laser</term>
<term>Gastrointestinal tissue</term>
<term>In Vitro Techniques</term>
<term>Laser</term>
<term>Laser Therapy (methods)</term>
<term>Laser energy</term>
<term>Laser welding</term>
<term>Local tissue heating</term>
<term>Molecular dynamics</term>
<term>Palo alto</term>
<term>Photocoagulation</term>
<term>Psec pulse</term>
<term>Shrinkage temperature</term>
<term>Singlet oxygen</term>
<term>Spectrophotometry, Infrared</term>
<term>Stone formation</term>
<term>Suture material</term>
<term>Thermal buildup</term>
<term>Thermal relaxation time</term>
<term>Tissue fusion</term>
<term>Tissue heating</term>
<term>Tissue temperature</term>
<term>Tissue welding</term>
<term>Visible transmittance spectra</term>
<term>Weld</term>
<term>Welding</term>
<term>YAG laser</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr">
<term>Animaux</term>
<term>Chiens</term>
<term>Conduit cystique ()</term>
<term>Conduit cystique (traumatismes)</term>
<term>Spectrophotométrie IR</term>
<term>Techniques in vitro</term>
<term>Thérapie laser ()</term>
<term>Vésicule biliaire ()</term>
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<keywords scheme="MESH" qualifier="injuries" xml:lang="en">
<term>Cystic Duct</term>
</keywords>
<keywords scheme="MESH" qualifier="methods" xml:lang="en">
<term>Laser Therapy</term>
</keywords>
<keywords scheme="MESH" qualifier="surgery" xml:lang="en">
<term>Cystic Duct</term>
<term>Gallbladder</term>
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<keywords scheme="MESH" qualifier="traumatismes" xml:lang="fr">
<term>Conduit cystique</term>
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<term>Animals</term>
<term>Dogs</term>
<term>In Vitro Techniques</term>
<term>Spectrophotometry, Infrared</term>
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<keywords scheme="Pascal" xml:lang="fr">
<term>Animaux</term>
<term>Appareil digestif pathologie</term>
<term>Argon</term>
<term>Chien</term>
<term>Chiens</term>
<term>Chirurgie expérimentale</term>
<term>Conduit cystique</term>
<term>Etude comparative</term>
<term>Laser YAG</term>
<term>Laser gaz</term>
<term>Photocoagulation</term>
<term>Spectrophotométrie IR</term>
<term>Techniques in vitro</term>
<term>Thérapie laser</term>
<term>Voie biliaire</term>
<term>Vésicule biliaire</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en">
<term>Absorption curve</term>
<term>Amorphous coagulum</term>
<term>Argon</term>
<term>Argon laser</term>
<term>Argon lasers</term>
<term>Arterial pressure tubing</term>
<term>Bile</term>
<term>Bile spectrum</term>
<term>Canine bile</term>
<term>Coherent corporation</term>
<term>Collagen</term>
<term>Collagen molecules</term>
<term>Collateral damage</term>
<term>Continuous exposure</term>
<term>Deionized water</term>
<term>Energy exposure</term>
<term>Gallbladder</term>
<term>Gallbladder tissue</term>
<term>Gastrointestinal tissue</term>
<term>Laser</term>
<term>Laser energy</term>
<term>Laser welding</term>
<term>Local tissue heating</term>
<term>Molecular dynamics</term>
<term>Palo alto</term>
<term>Psec pulse</term>
<term>Shrinkage temperature</term>
<term>Singlet oxygen</term>
<term>Stone formation</term>
<term>Suture material</term>
<term>Thermal buildup</term>
<term>Thermal relaxation time</term>
<term>Tissue fusion</term>
<term>Tissue heating</term>
<term>Tissue temperature</term>
<term>Tissue welding</term>
<term>Visible transmittance spectra</term>
<term>Weld</term>
<term>Welding</term>
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<front>
<div type="abstract" xml:lang="en">Laser welding offers several potential advantages over suture closure, including improved healing, lack of a nidus for stone formation, and greater speed and ease. We examined in vitro gallbladder cystic duct welds created by two different systems, the thulmium‐holmium‐chromium (THC):YAG (2,150 nm) and argon ion (488–514 nm) lasers, in an effort to define suitable parameters for tissue fusion. Mean bursting pressures for argon welds were 95 mm Hg at 1.5 W CW and 26 mm Hg at 1.5 W, 50 msec chopped delivery. For the THC:YAG laser, the mean bursting pressure for welds created with 300 mJ pulses was 45 mm Hg. Full‐thickness tissue fusion and limited collateral thermal damage were observed histologically for both the CW argon and pulsed THC:YAG welds. Examination of the suggested mechanisms of tissue fusion for these photothermal lasers suggests that increased duration of tissue heating at the appropriate temperature results in more extensive collagen crosslinking and a stronger weld.</div>
</front>
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