Midinfrared coronary laser angioplasty with multifiber catheters

Christopher J. White M.D.; Stephen R. Ramee M.D.; Tyrone J. Collins M.D.

doi:10.1117/12.146569

23 June 1993 Mid-infrared coronary laser angioplasty with multifiber catheters

Christopher J. White M.D., Stephen R. Ramee M.D., Tyrone J. Collins M.D.

Proceedings Volume 1878, Diagnostic and Therapeutic Cardiovascular Interventions III; (1993) https://doi.org/10.1117/12.146569
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Mid-infrared laser wavelengths offer advantages as a source for coronary angioplasty based upon the excellent fiberoptic transmission and the enhanced tissue absorption of these photons. We report the results of a pilot clinical trial of a Holmium:YAG (2.1 micrometers ) coronary laser angioplasty using a prototype (1.6 mm and 2.0 mm) multifiber catheters. Coronary laser angioplasty with or without adjunctive balloon angioplasty or directional atherectomy was performed in 14 patients with 17 coronary stenoses. Laser success was obtained in 13/14 (93%) patients and 16/17 (94%) lesions. Uncomplicated procedural success was achieved in 9/14 (64%) patients and 12/17 (71%) lesions. Our initial laser success rate was very encouraging using this prototype multifiber catheter with a holmium:YAG laser. However, our overall procedural success rate was disappointing, and not superior to that expected with conventional angioplasty alone. The holmium laser remains an attractive energy source for laser angioplasty, but its utility is limited by catheters which create inadequate channels for stand-alone laser angioplasty.

Citation Download Citation

Christopher J. White M.D., Stephen R. Ramee M.D., and Tyrone J. Collins M.D. "Mid-infrared coronary laser angioplasty with multifiber catheters", Proc. SPIE 1878, Diagnostic and Therapeutic Cardiovascular Interventions III, (23 June 1993); https://doi.org/10.1117/12.146569

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