Document Detail

In vitro comparison of thulium-holmium-chromium: YAG and argon ion lasers for welding of biliary tissue.
MedLine Citation:
PMID:  2733534     Owner:  NLM     Status:  MEDLINE    
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.
M C Oz; L S Bass; H W Popp; R S Chuck; J P Johnson; S L Trokel; M R Treat
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Publication Detail:
Type:  Comparative Study; In Vitro; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Lasers in surgery and medicine     Volume:  9     ISSN:  0196-8092     ISO Abbreviation:  Lasers Surg Med     Publication Date:  1989  
Date Detail:
Created Date:  1989-07-27     Completed Date:  1989-07-27     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8007168     Medline TA:  Lasers Surg Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  248-53     Citation Subset:  IM    
Department of Surgery, College of Physicians and Surgeons, Columbia University, New York, New York.
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MeSH Terms
Cystic Duct / injuries,  surgery*
Gallbladder / surgery*
Laser Therapy / methods*
Spectrophotometry, Infrared
Grant Support

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