Construction of high reliability and ultra-thin medical laser endoscope
| Project/Area Number |
17206033
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Sendai National College of Technology |
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Principal Investigator |
MIYAGI Mitsunobu Sendai National College of Technology, Professor (90006263)
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| Co-Investigator(Kenkyū-buntansha) |
SAITO Seichi Tohoku Univ., Graduates School of Medicine, Associate Professor (80235043)
IWAI Katsumasa Sendai National College of Technology, Research Associate (10361130)
MATSUURA Yuji Tohoku Univ., Graduates School of Engineering, Associate Professor (10241530)
BABA Kazutaka Sendai National College of Technology, Professor (10192709)
石 芸尉 東北大学, 大学院・工学研究科, 助教授 (90323063)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥48,490,000 (Direct Cost: ¥37,300,000、Indirect Cost: ¥11,190,000)
Fiscal Year 2007: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2006: ¥15,340,000 (Direct Cost: ¥11,800,000、Indirect Cost: ¥3,540,000)
Fiscal Year 2005: ¥21,970,000 (Direct Cost: ¥16,900,000、Indirect Cost: ¥5,070,000)
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| Keywords | Hollow Fiber / Laser Treatment / Endoscope / Infrared Laser |
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| Research Abstract |
A dielectric-coated metallic hollow fiber is one of the commonly used infrared fibers in medical field nowadays. We developed a flexible hollow fiber for multi-wavelength medical laser treatment in endoscope.
1. Development of a hollow fiber for multi-wavelength laser light transmission
In the fabrication of the cyclic olefin polymer (COP) coated silver (COP/Ag) hollow glass optical fiber, a liquid-phase coating method is normally used for the COP layer. The uniformity of the COP layer is one of the most important factors to obtain hollow fibers with high-performance. Low-loss properties have been attained in several key wavelength bands in the visible or infrared region for medical laser transmission. We proposed a closed loop-flowing method in order to coat a uniform COP layer. The method was successfully applied to the fabrication of hollow fiber.
2. Development of a ultra-flexible hollow fiber with biocompatibility and high reliability
We developed hollow fibers with polycarbonate (PC) capillaries for use as a supporting tube. By adjusting the drawing temperature in the fabrication of the PC capillaries, we obtained uniform PC capillaries with a smooth inner surface. We attained low loss properties for Er: YAG laser light transmission.
3. Development of micro output devices with a high performance
In order to change the output direction and focal distance of laser light in a small operation space, we developed glass sealing hollow fibers. We showed that the distal tips functioning as focusing optics when the shapes of sealed end surfaces are properly fabricated.
4. Construction and evaluation of a laser catheter
Er : YAG laser light and green pilot beam were simultaneously delivered through the endoscope with small losses even when it was sharply bent with a bending radius as small as 1 centimeter. Er : YAG laser light was delivered to reach a model calculus by using a hollow fiber and fragmentation efficiency were evaluated.
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Report
(4 results)
Research Products
(317 results)
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[Presentation] 無機薄膜内装中空ファイバの長尺化2008
Author(s)
岩井 克全
Organizer
レーザー学会学術講演会第28回年次大会
Place of Presentation
名古屋国際会議場,名古屋
Year and Date
2008-01-31
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] 歯髄脈波検出光学系の基礎的検討2008
Author(s)
太田 葵
Organizer
レーザー学会学術講演会第28回年次大会
Place of Presentation
名古屋国際会議場,名古屋
Year and Date
2008-01-31
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] Laser radiation bracket debonding2008
Author(s)
T.Dostalova
Organizer
SPIE conference on lasers in dentistry XIV
Place of Presentation
San Jose Convention Center,San Jose,California USA
Year and Date
2008-01-20
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] 超細径銀中空ファイバの製作2007
Author(s)
岩井 克全
Organizer
電子情報通信学会エレクトロニクスソサイエティ大会
Place of Presentation
鳥取大学,鳥取
Year and Date
2007-09-13
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] 軟X線伝送用金属中空ファイバ2007
Author(s)
前田 真吾
Organizer
電子情報通信学会エレクトロニクスソサイエティ大会
Place of Presentation
鳥取大学,鳥取
Year and Date
2007-09-10
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] 医療用中空光ファイバの最近の展開2006
Author(s)
松浦 祐司
Organizer
電子情報通信学会総合大会
Place of Presentation
国士舘大学 世田谷キャンパス,東京
Year and Date
2006-03-27
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] 中空光ファイバ用ビームディフレクタ2006
Author(s)
渡邊 智紀
Organizer
レーザー学会学術講演会第26回年次大会
Place of Presentation
大宮ソニックシティ,大宮
Year and Date
2006-02-09
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] 単一モードブラッグファイバの諸特性2005
Author(s)
片桐 崇史
Organizer
電子情報通信学会エレクトロニクスソサイエティ大会
Place of Presentation
北海道大学 札幌キャンパス,札幌
Year and Date
2005-09-23
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] 医療中空光ファイバ用テーパ型集光素子2005
Author(s)
成田 諭
Organizer
電子情報通信学会エレクトロニクスソサイエティ大会
Place of Presentation
北海道大学 札幌キャンパス,札幌
Year and Date
2005-09-22
Description
「研究成果報告書概要(和文)」より
Related Report
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