Argon laser vascular welding: the thermal component

George Kopchok; Warren S. Grundfest; Rodney A. White; Carlos Donayre; Roy Fujitani; Frank Litvack; Geoffrey H. White; Stanley R. Klein; Leon Morgenstern

Argon laser vascular welding: the thermal component

George Kopchok^*, Warren S. Grundfest, Rodney A. White, Carlos Donayre, Roy Fujitani, Frank Litvack, Geoffrey H. White, Stanley R. Klein, Leon Morgenstern

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

13 Citations (Scopus)

Abstract

Various mechanisms have been proposed for laser induced vascular welding. The conflict is partly due to the different laser parameters being used, different techniques, and the possible dual thermal and photochemical effects of lasers on tissues. This study examines the thermal aspects of welding medium diameter (4-8 mm) blood vessels. Six canine arteriovenous (A-V) fistulas were created by argon laser vessel fusion. Thermal images were concurrently recorded with an AGA thermal camera and computer analyzed. The welding was done at an energy fluence of 1100 J/cm**2, using continuous saline irrigation for cooling. The thermal profiles revealed a maximum temperature of 48 degree C. In previous experiments, welding of microvessels has been achieved with CO//2, Nd:YAG and argon lasers. In our experience, welding of medium diameter arteriotomies and A-V fistulas was possible only with argon lasers. The thermal component induced by different laser wavelengths may be partly accountable for these observed differences in welding properties.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	Stephen N. Joffe, John A. Parrish, Robert S. Scott
Publisher	SPIE
Pages	260-263
Number of pages	4
Volume	712
ISBN (Print)	0892527471
Publication status	Published - 1987

Cite this

Kopchok, George ; Grundfest, Warren S. ; White, Rodney A. ; Donayre, Carlos ; Fujitani, Roy ; Litvack, Frank ; White, Geoffrey H. ; Klein, Stanley R. ; Morgenstern, Leon. / Argon laser vascular welding : the thermal component. Proceedings of SPIE - The International Society for Optical Engineering. editor / Stephen N. Joffe ; John A. Parrish ; Robert S. Scott. Vol. 712 SPIE, 1987. pp. 260-263

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title = "Argon laser vascular welding: the thermal component",

abstract = "Various mechanisms have been proposed for laser induced vascular welding. The conflict is partly due to the different laser parameters being used, different techniques, and the possible dual thermal and photochemical effects of lasers on tissues. This study examines the thermal aspects of welding medium diameter (4-8 mm) blood vessels. Six canine arteriovenous (A-V) fistulas were created by argon laser vessel fusion. Thermal images were concurrently recorded with an AGA thermal camera and computer analyzed. The welding was done at an energy fluence of 1100 J/cm**2, using continuous saline irrigation for cooling. The thermal profiles revealed a maximum temperature of 48 degree C. In previous experiments, welding of microvessels has been achieved with CO//2, Nd:YAG and argon lasers. In our experience, welding of medium diameter arteriotomies and A-V fistulas was possible only with argon lasers. The thermal component induced by different laser wavelengths may be partly accountable for these observed differences in welding properties.",

author = "George Kopchok and Grundfest, {Warren S.} and White, {Rodney A.} and Carlos Donayre and Roy Fujitani and Frank Litvack and White, {Geoffrey H.} and Klein, {Stanley R.} and Leon Morgenstern",

year = "1987",

language = "English",

isbn = "0892527471",

volume = "712",

pages = "260--263",

editor = "Joffe, {Stephen N.} and Parrish, {John A.} and Scott, {Robert S.}",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

address = "United States",

}

Argon laser vascular welding : the thermal component. / Kopchok, George; Grundfest, Warren S.; White, Rodney A.; Donayre, Carlos; Fujitani, Roy; Litvack, Frank; White, Geoffrey H.; Klein, Stanley R.; Morgenstern, Leon.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Stephen N. Joffe; John A. Parrish; Robert S. Scott. Vol. 712 SPIE, 1987. p. 260-263.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

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AU - Kopchok, George

AU - Grundfest, Warren S.

AU - White, Rodney A.

AU - Donayre, Carlos

AU - Fujitani, Roy

AU - Litvack, Frank

AU - White, Geoffrey H.

AU - Klein, Stanley R.

AU - Morgenstern, Leon

PY - 1987

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N2 - Various mechanisms have been proposed for laser induced vascular welding. The conflict is partly due to the different laser parameters being used, different techniques, and the possible dual thermal and photochemical effects of lasers on tissues. This study examines the thermal aspects of welding medium diameter (4-8 mm) blood vessels. Six canine arteriovenous (A-V) fistulas were created by argon laser vessel fusion. Thermal images were concurrently recorded with an AGA thermal camera and computer analyzed. The welding was done at an energy fluence of 1100 J/cm**2, using continuous saline irrigation for cooling. The thermal profiles revealed a maximum temperature of 48 degree C. In previous experiments, welding of microvessels has been achieved with CO//2, Nd:YAG and argon lasers. In our experience, welding of medium diameter arteriotomies and A-V fistulas was possible only with argon lasers. The thermal component induced by different laser wavelengths may be partly accountable for these observed differences in welding properties.

AB - Various mechanisms have been proposed for laser induced vascular welding. The conflict is partly due to the different laser parameters being used, different techniques, and the possible dual thermal and photochemical effects of lasers on tissues. This study examines the thermal aspects of welding medium diameter (4-8 mm) blood vessels. Six canine arteriovenous (A-V) fistulas were created by argon laser vessel fusion. Thermal images were concurrently recorded with an AGA thermal camera and computer analyzed. The welding was done at an energy fluence of 1100 J/cm**2, using continuous saline irrigation for cooling. The thermal profiles revealed a maximum temperature of 48 degree C. In previous experiments, welding of microvessels has been achieved with CO//2, Nd:YAG and argon lasers. In our experience, welding of medium diameter arteriotomies and A-V fistulas was possible only with argon lasers. The thermal component induced by different laser wavelengths may be partly accountable for these observed differences in welding properties.

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VL - 712

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BT - Proceedings of SPIE - The International Society for Optical Engineering

A2 - Joffe, Stephen N.

A2 - Parrish, John A.

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ER -

Argon laser vascular welding: the thermal component

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