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Proceedings Paper

Bladder welding in rats using a controlled-temperature CO2 laser system
Author(s): Leonid Lobik; Avi Ravid; Israel Nissencorn; Noam Kariv; J. Bernheim; Abraham Katzir
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Paper Abstract

The promising clinical potential for laser welding of tissues has generated a growing interest in this field. As improved laser welding system was constructed in this work. It was based on IR transmitting AgClBr fibers for laser power delivery and for temperature control. The fiberoptic system was used to transmit CO2 laser power for tissue heating and for non contact (radiometric) temperature monitoring and control. Bladder opening (cystotomy) was performed in 38 rats and 33 of the animals underwent laser welding. In 5 rats (control group) the bladder wound was closed with one layer continuous 6-0 dexon sutures. The rats were sacrificed on days 2, 10 and 30 for histological study. The temperature control of the upper tissue surface was set at 70 plus or minus 5 degrees Celsius. Bladder closure using laser welding was successful in 31/33 (94%) of the animals. The quality of the weld was examined immediately after the operation, revealing a water tight closure of the bladder wall. The histological examination showed an excellent welding and healing of the tissue. These results demonstrate the potential of temperature controlled CO2 laser welding.

Paper Details

Date Published: 1 July 1998
PDF: 9 pages
Proc. SPIE 3245, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII, (1 July 1998); doi: 10.1117/12.312323
Show Author Affiliations
Leonid Lobik, Meir Hospital (Israel)
Avi Ravid, Tel Aviv Univ. (Israel)
Israel Nissencorn, Meir Hospital (Israel)
Noam Kariv, Tel Aviv Univ. School of Medicine (Israel)
J. Bernheim, Meir Hospital (Israel)
Abraham Katzir, Tel Aviv Univ. (Israel)


Published in SPIE Proceedings Vol. 3245:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII
Graham M. Watson; Harvey Lui; Lou Reinisch; Penny J. Smalley; Kenneth Eugene Bartels; R. Rox Anderson; Lawrence S. Bass; Kenneth Eugene Bartels; C. Gaelyn Garrett; Lloyd P. Tate; Sharon L. Thomsen; Reza S. Malek; Aaron P. Perlmutter; R. Rox Anderson; Lawrence S. Bass; C. Gaelyn Garrett; Kenton W. Gregory; Harvey Lui; Reza S. Malek; Aaron P. Perlmutter; Lou Reinisch; Penny J. Smalley; Lloyd P. Tate; Sharon L. Thomsen; Graham M. Watson, Editor(s)

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