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Proceedings Paper

Modified Fiber Tip Laser Angioplasty In An Atherosclerotic Swine Model.
Author(s): Christopher J. White; Stephen R. Ramee; Michael Aita; Gene Samson; Alan K. Banks; Mary Beth Michaels; Tim Reeves; Herman L. Price; Robert E. Goldstein
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Paper Abstract

Laser angioplasty of atherosclerotic iliac arteries of Yucatan miniature swine was performed with an argon laser source coupled to a 200 gm silica quartz fiber with 1.0 mm, 1.2 mm, or 1.5 mm silica ball-tips fused to the distal end of the fiber. After initially failing to cross the lesion with a guide wire, laser angioplasty was attempted in 41 lesions in 22 animals. The laser energy was delivered with the ball-tip in contact with the lesion in 1 to 5 second pulses at a mean power of (±SD) of 2.9 ± 0.2 watts. The average energy delivered per pulse was 8.6 ± 3.7 joules for 7.9 ± 6.5 pulses per lesion. Successful recanalization was determined angiographically. Following laser recanalization balloon angioplasty was attempted to further improve the lumen size. Successful laser recanalization was observed in 35 of 41 (85%) lesions and laser-induced perforation occurred in 5 (12%). No instances of mechanical perforation occurred due to the atraumatic, blunt nature of the ball-tip laser fiber. Laser angioplasty with this modified fiber tip is an effective method for recanalizing obstructed arteries which otherwise would not be amenable to balloon angioplasty.

Paper Details

Date Published: 15 June 1989
PDF: 8 pages
Proc. SPIE 1067, Optical Fibers in Medicine IV, (15 June 1989); doi: 10.1117/12.952113
Show Author Affiliations
Christopher J. White, Ochsner Medical Institutions (United States)
Stephen R. Ramee, Ochsner Medical Institutions (United States)
Michael Aita, Advanced Cardiovascular Systems, Inc (United States)
Gene Samson, Advanced Cardiovascular Systems, Inc (United States)
Alan K. Banks, Walter Reed Army Medical Center (United States)
Mary Beth Michaels, Advanced Cardiovascular Systems, Inc (United States)
Tim Reeves, Advanced Cardiovascular Systems, Inc (United States)
Herman L. Price, Ochsner Medical Institutions, (United States)
Robert E. Goldstein, Uniformed Services University for the Health Sciences (United States)

Published in SPIE Proceedings Vol. 1067:
Optical Fibers in Medicine IV
Abraham Katzir, Editor(s)

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