Diode laser anastemoses of medium-size arteries with indocyanine green dye-enhanced albumine

Guo-Xing Weng; Warren Williamson; H. Thomas Aretz M.D.

doi:10.1117/12.330173

2 November 1998 Diode laser anastemoses of medium-size arteries with indocyanine green dye-enhanced albumine

Guo-Xing Weng, Warren Williamson, H. Thomas Aretz M.D.

Proceedings Volume 3344, 1997 Shanghai International Conference on Laser Medicine and Surgery; (1998) https://doi.org/10.1117/12.330173
Event: 1997 Shanghai International Conference on Laser Medicine and Surgery, 1997, Shanghai, China

Abstract

In order to achieve a better long-term patency result and solve the problem of tensile strength in laser artery anastomoses, diode laser and Indocyanine Green (ICG) enhanced albumin were applied to medium-size artery anastomoses with three different methods, that is, direct laser vascular anastomoses, direct method enforced with ICG albumin, and laser welding with ICG albumin as 'solder'. Internal mammary artery (IMA) harvested from patients undergoing coronary bypass procedures, in vivo rat abdominal artery, and in vitro swine heart and IMA were chosen as the experimental materials. The results revealed that only 3.15 +/- 0.36 minutes were required for each anastomosis; the bursting pressure and tensile strength were greater in the groups enforced with ICG albumin and laser welding than that with direct laser anastomoses. In the laser soldering group, the thermal damage was limited in the adventitial layer, only at a depth of 200 micrometers . There was also a satisfied result in the in vivo laser welding rat's abdominal adventitial layer, only at a depth of 200 micrometers . There was also a satisfied result in the in vivo laser welding rat's abdominal arteries. However, end-to-side laser welding of IMA soronary artery with ICG albumin needs further investigation about its tensile strength in an in vivo model.

Citation Download Citation

Guo-Xing Weng, Warren Williamson, and H. Thomas Aretz M.D. "Diode laser anastemoses of medium-size arteries with indocyanine green dye-enhanced albumine", Proc. SPIE 3344, 1997 Shanghai International Conference on Laser Medicine and Surgery, (2 November 1998); https://doi.org/10.1117/12.330173

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KEYWORDS

Laser welding

Arteries

Semiconductor lasers

In vivo imaging

Indocyanine green

Laser tissue interaction

Heart

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