CO laser angioplasty system: efficacy of manipulatable laser angioscope catheter

Tsunenori Arai, Makoto Kikuchi, Kyoichi M.D. Mizuno, Masami Sakurada, Akira M.D. Miyamoto, Koh Arakawa, Akira Kurita, Haruo M.D. Nakamura, Kiyoshi Takeuchi, Atsushi Utsumi, Yoshiro Akai

研究成果: Conference contribution

1 引用 (Scopus)

抜粋

A percutaneous transluminal coronary angioplasty system using a unique combination of CO laser (5 μm) and As-S infrared glass fiber under the guidance of a manipulatable laser angioscope catheter is described. The ablation and guidance functions of this system are evaluated. The angioplasty treatment procedure under angioscope guidance was studied by in vitro model experiment and in vivo animal experiment. The whole angioplasty system is newly developed. That is, a transportable compact medical CO laser device which can emit up to 10 W, a 5 F manipulatable laser angioscope catheter, a thin CO laser cable of which the diameter is 0.6 mm, an angioscope imaging system for laser ablation guidance, and a system controller were developed. Anesthetized adult mongrel dogs (n = 5) with an artificial complete occlusion in the femoral artery and an artificial human vessel model including occluded or stenotic coronary artery were used. The manipulatability of the catheter was drastically improved (both rotation and bending), therefore, precise control of ablation to expand stenosis was obtained. A 90% artificial stenosis made of human yellow plaque in 4.0 mm diameter in the vessel was expanded to 70% stenosis by repetitive CO laser ablations of which total energy was 220 J. All procedures were performed and controlled under angioscope visualization.

元の言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
出版者Publ by Int Soc for Optical Engineering
ページ74-79
ページ数6
ISBN(印刷物)081940795X
出版物ステータスPublished - 1992 12 1
イベントOptical Fibers in Medicine VII - Los Angeles, CA, USA
継続期間: 1992 1 211992 1 22

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
1649
ISSN(印刷物)0277-786X

Other

OtherOptical Fibers in Medicine VII
Los Angeles, CA, USA
期間92/1/2192/1/22

    フィンガープリント

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

これを引用

Arai, T., Kikuchi, M., Mizuno, K. M. D., Sakurada, M., Miyamoto, A. M. D., Arakawa, K., Kurita, A., Nakamura, H. M. D., Takeuchi, K., Utsumi, A., & Akai, Y. (1992). CO laser angioplasty system: efficacy of manipulatable laser angioscope catheter. : Proceedings of SPIE - The International Society for Optical Engineering (pp. 74-79). (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 1649). Publ by Int Soc for Optical Engineering.