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Proceedings Paper

Thermal sealing of blood vessels using infrared lasers
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Paper Abstract

Suture ligation of blood vessels during surgery can be time-consuming and skill-intensive. Energy-based, electrosurgical and ultrasonic devices have recently replaced sutures for many surgical procedures, providing rapid hemostasis during surgery. However, these devices have the potential to create large collateral zones of thermal damage and tissue necrosis. This study explores infrared (IR) lasers as an alternative technology for rapid and precise thermal coagulation and sealing of blood vessels. Eight near-IR lasers (808, 980, 1075, 1470, 1550, 1850- 1880, 1908, and 2120 nm) were tested. Preliminary studies were performed using fresh porcine renal vessels, ex vivo, with diameters of 1-6 mm, compressed to a thickness of 0.4 mm. A linear beam profile was then applied normal to the vessel for narrow, full-width thermal coagulation. Laser irradiation time was 5 s. Vessel burst pressure measurements were used to determine seal strength. The 1470 nm laser wavelength sealed a wide range of vessel diameters from 1-6 mm. Other lasers (1550, 1850-1880, and 1908 nm) also sealed vessels, but were limited by suboptimal seal pressures, excessive charring, and/or limited power output preventing treatment of large vessels.

Paper Details

Date Published: 8 March 2013
PDF: 7 pages
Proc. SPIE 8565, Photonic Therapeutics and Diagnostics IX, 85654B (8 March 2013); doi: 10.1117/12.2000667
Show Author Affiliations
Christopher M. Cilip, The Univ. of North Carolina at Charlotte (United States)
Sarah B. Rosenbury, The Univ. of North Carolina at Charlotte (United States)
Nicholas Giglio, The Univ. of North Carolina at Charlotte (United States)
Thomas C. Hutchens, The Univ. of North Carolina at Charlotte (United States)
Gino R. Schweinsberger, The Univ. of North Carolina at Charlotte (United States)
Duane Kerr, Covidien (United States)
Cassandra Latimer, Covidien (United States)
William H. Nau, Covidien (United States)
Nathaniel M. Fried, The Univ. of North Carolina at Charlotte (United States)

Published in SPIE Proceedings Vol. 8565:
Photonic Therapeutics and Diagnostics IX
Andreas Mandelis; Brian Jet-Fei Wong; Anita Mahadevan-Jansen; Henry Hirschberg M.D.; Hyun Wook Kang; Nikiforos Kollias; Melissa J. Suter; Kenton W. Gregory M.D.; Guillermo J. Tearney M.D.; Stephen Lam; Bernard Choi; Steen J. Madsen; Bodo E. Knudsen M.D.; E. Duco Jansen; Justus F. Ilgner M.D.; Haishan Zeng; Matthew Brenner; Laura Marcu, Editor(s)

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