Infrared glass fiber cables for CO laser medical applications

Tsunenori Arai, Kyoichi M.D. Mizuno, Koji M.D. Sensaki, Makoto Kikuchi, Tamishige Watanabe, Atsushi Utsumi, Kiyoshi Takeuchi, Yoshiro Akai

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

We developed the medical fiber cables which were designed for CO laser therapy, i.e., angioplasty and endoscopic therapy. As-S chalcogenide glass fibers were used for CO laser delivery. A 230 μm core-diameter fiber was used for the angioplasty laser cable. The outer diameter of this cable was 600 μm. The total length and insertion length of the angioplasty laser cable were 2.5 m and 1.0 m, respectively. Typically, 2.0 W of fiber output was used in the animal experiment in vivo for the ablation of the model plaque which consisted of human atheromatous aorta wall. The transmission of the angioplasty laser cable was approximately 35%, because the reflection loss occurred at both ends of the fiber and window. Meanwhile, the core diameter of the energy delivery fiber for the endoscopic therapy was 450 μm. The outer diameter of this cable was 1.7 mm. Approximately 4.5 W of fiber output was used for clinical treatment of pneumothorax through a pneumoscope. Both types of the cables had the ultra-thin thermocouples for temperature monitoring at the tip of the cables. This temperature monitoring was extremely useful to prevent the thermal destruction of the fiber tip. Moreover, the As-S glass fibers were completely sealed by the CaF2 windows and outer tubes. Therefore, these cables were considered to have sufficient safety properties for medical applications. These laser cables were successfully used for the in vivo animal experiments and/or actual clinical therapies.

本文言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
出版社Publ by Int Soc for Optical Engineering
ページ106-111
ページ数6
ISBN(印刷版)0819411205
出版ステータスPublished - 1993 1月 1
イベントOptical Fibers in Medicine VIII - Los Angeles, CA, USA
継続期間: 1993 1月 191993 1月 20

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
1893
ISSN(印刷版)0277-786X

Other

OtherOptical Fibers in Medicine VIII
CityLos Angeles, CA, USA
Period93/1/1993/1/20

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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