Modified Fiber Tip Laser Angioplasty In An Atherosclerotic Swine Model.

Christopher J. White; Stephen R. Ramee; Michael Aita; Gene Samson; Alan K. Banks; Mary Beth Michaels; Tim Reeves; Herman L. Price; Robert E. Goldstein

doi:10.1117/12.952113

15 June 1989 Modified Fiber Tip Laser Angioplasty In An Atherosclerotic Swine Model.

Christopher J. White, Stephen R. Ramee, Michael Aita, Gene Samson, Alan K. Banks, Mary Beth Michaels, Tim Reeves, Herman L. Price, Robert E. Goldstein

Author Affiliations +

Proceedings Volume 1067, Optical Fibers in Medicine IV; (1989) https://doi.org/10.1117/12.952113
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

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.

Citation Download Citation

Christopher J. White, Stephen R. Ramee, Michael Aita, Gene Samson, Alan K. Banks, Mary Beth Michaels, Tim Reeves, Herman L. Price, and Robert E. Goldstein "Modified Fiber Tip Laser Angioplasty In An Atherosclerotic Swine Model.", Proc. SPIE 1067, Optical Fibers in Medicine IV, (15 June 1989); https://doi.org/10.1117/12.952113

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