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Excimer Laser Angioplasty; its Development of the System for Clinical Use.

Research Project

Project/Area Number 62870050
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field General surgery
Research InstitutionYamanashi Medical College

Principal Investigator

UENO Akira  Yamanashi Medical College, Surgery, Vice President, 副学長 (60010162)

Co-Investigator(Kenkyū-buntansha) IWASAKI Masaru  Yamanashi Medical College, Surgery, Assistant Professor, 医学部, 講師 (90143445)
KAMIYA Kihachiro  Yamanashi Medical College, Surgery, Assistant Professor, 医学部, 講師 (90111509)
Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥21,100,000 (Direct Cost: ¥21,100,000)
Fiscal Year 1989: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1988: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1987: ¥19,100,000 (Direct Cost: ¥19,100,000)
KeywordsAngioplasty / Laser Angioplasty / Excimer Laser / Occlusive Vascular Disease / レーザー血管形成術 / エキシマレーザー
Research Abstract

We investigated the potential of excimer laser to apply for the laser angioplasty. The apparatus was constructed by Hamamatsu-Photonicus KK., and excimer lasers used in this study were KrF-excimer(wave length:248nm), XeCl-excimer(wave length:308nm), and XeF-excimer(wave length:351nm). The direct irradiation with KrF- and XeCl-excimer lasers could produced the sharp-edged crater on the normal and also sclerotic aortic specimen with no visible thermal damage, but in case of XeF-excimer laser irradiation the thermal damage was evident in advanced tissue of the crater. The depth of the crater increased in a linear fashion with increasing duration of irradiation, while the width remained constant. Thus, it was revealed that the excimer laser was basically one of the most suitable laser source to the laser angioplasty. However, the excimer laser irradiation through a quartz fiber could produce only a small and shallow crater on the specimen because of the low transmission rate of a fiber(KrF:22%, XeCl:37%, XeF:57%). These results showed that excimer laser angioplasty with these equipments would be inefficient for the clinical usage, and the efforts should be made to develop the more powerful excimer laser delivery system. Considering the difficulties in improving the quartz fiber, the development of a new apparatus with longer pulse oscillation of excimer laser capable of delivering the higher output power will be needed.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Masaru Iwasaki、Masahiro Kobayashi、Kihachirou Kamiya、Shigeo Akimoto、Yutaka Takayama、Akira Ueno: "Comparison of Effects of Irradiation with Contineous Wave Nd-YAG and Argon-ion Laser,and Pulsed Ultaviolet XeCl-Excimer Laser on Human Aortic Wall." Yamanashi Medical Journal. 3. 15-20 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 上野明、岩崎甫、小林正洋: "エキシマレ-ザ-による血管形成術の基礎的研究-Nd-YAGレ-ザ-、アルゴンレ-ザ-とのヒト動脈壁への照射効果の比較-" 臨床成人病. 18. 1686-1687 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 上野明: "閉塞性末梢血管疾患-その診断・治療の現況-" 日本医事新報. 3358. 13-17 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 岩崎甫、神谷喜八郎、秋元滋夫、高山豊、松川哲之助、上野明: "極細径ファイバ-スコ-プを用いた血管内視鏡の実験的・臨床的研究" 日本外科学会雑誌. 88. 1737-1742 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 岩崎甫、小林正洋、上野明: "エキシマレ-ザ-を用いたレ-ザ-血管形成術の基礎的検討" 脈営学.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 岩崎甫、上野明: "エキシマレ-ザ-による血管形成術の現況" 病態生理.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masaru Iwasaki、Kihachiro Kamiya、Akira Ueno: "Fundamental Research in Laser Angioplasty(1):Effects of Nd:YAG,Argon-ion and Excimer Lasers on Human Aortic Wall with or without Atheromatous Plaque.Laser:Optoelectronics in Medicine." Springer-Verlag, (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Masaru Iwasaki, Masahiro Kobayashi, Kihachiro Kamiya, Shigeo Akimoto, Yutaka Takayama, Akira Ueno: "Comparison of Effects of Irradiation with Continuous Wave Nd-YAG and Pulsed Ultraviolet XeCl-Excimer Laser on the Human Aortic Wall." Yamanashi Med. J. 3(1), 15-20, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 上野明: "閉塞性末梢血管疾患-その診断・治療の現況-" 日本医事新報. 3358. 13-17 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] 岩崎甫,神谷喜八郎,秋元滋夫,高山豊,松川哲之助,上野明: "極細径ファイバ-スコ-プを用いた血管内視鏡の実験的・臨床的研究" 日本外科学会雑誌. 88. 1737-1742 (1987)

    • Related Report
      1989 Annual Research Report
  • [Publications] 岩崎甫,上野明: "エキシマレ-ザ-による血管形成術の現況" 病態生理.

    • Related Report
      1989 Annual Research Report
  • [Publications] 上野明,岩崎甫,小林正洋: 臨床成人病. 18. 118-119 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 岩崎甫,小林正洋,上野明: 脈管学.

    • Related Report
      1988 Annual Research Report
  • [Publications] Masaru Iwasaki;Kihachirou Kamiya;Akira Ueno;Wilhelm and Raphaela Waidelich,ed.: "Fundamental research in laser angioplasty(1):Effects of Nd:YAG,Argon-ion and Excimer lasers on human aortic wall with or without atheromatous plaque." Springer-Verlag Berlin, 451-454 (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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