Nd-YAG Laser Angioplasty
To date clinical laser angioplasty has been performed mostly with argon and Nd-YAG laser systems, but more recently also excimer and dye lasers have been applied for clinical investigations. We performed experimental and clinical studies with a continuous-wave Nd-YAG laser with a wavelength of 1064 nm. For transmitting laser light to the obstructive tissue, silica fibers with a core diameter of 0.6 mm were used. In earlier studies it was shown that, in contrast to argon laser angioplasty, even calcified atherosclerotic plaques could be vaporized with a specially prepared melted fiber tip. However, approximately tenfold the laser energy is required to achieve the same effect compared with laser application on fibrous-fatty plaques . The major problem of laser angioplasty with bare fibers, high incidence of vessel wall perforation and only inadequate lumen improvement, were solved by the development of a novel laser catheter system [9, 13]. In this paper the results of Nd-YAG laser angioplasty in the femoropopliteal region are summarized [6, 7, 10, 18]. Also early results in iliac arteries are presented.
KeywordsCatheter Argon Polyethylene Heparin Luminal
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