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Development of hybrid small diameter artificial vascular graft using DLC and MPC polymer

Research Project

Project/Area Number 19K09270
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55030:Cardiovascular surgery-related
Research InstitutionOkayama University

Principal Investigator

Ousaka Daiki  岡山大学, 医歯薬学域, 助教 (70839141)

Co-Investigator(Kenkyū-buntansha) 中谷 達行  岡山理科大学, フロンティア理工学研究所, 教授 (50520920)
笹井 泰志  岐阜医療科学大学, 薬学部, 教授 (60336633)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
KeywordsMPCポリマー / ポリマーブラシ / Diamond-like carbon / 人工血管 / 対剥離性能 / ポリマー塞栓 / カテーテルコーティング / 高分子ブラシの安定化 / コーティング剥離・塞栓予防 / 有機・無機ハイブリッド / 抗菌性 / 生体適合性 / 抗ファウリング効果 / anti-degrafting / 無機・有機ハイブリッド / 生体適合性向上 / Diamond-like-carbon / コーティング / 血管外科
Outline of Research at the Start

本研究では、新規の小口径人工血管の有効性を調査します。我々はこれまで、岡山理科大学の中谷教授との共同研究により、世界で初めて管腔構造物へのDiamond-like-carbon(DLC)コーティングに成功しました(特許取得)。その技術を人工血管に応用し、開存率向上に取り組んでいますが、DLC単独だけでなく様々な有機コーティングとの組み合わせを加えて、小口径人工血管への最適なコーティング技術を模索しています。今回は岐阜薬科大学の笹井准教授の協力を得て、DLCとMPCポリマーからなる無機・有機のハイブリッド型人工血管を作成し、物性評価に加えて動物実験での生体適合性・開存性を評価します。

Outline of Final Research Achievements

We had published the paper regarding DLC-MPC hybrid strategy, which was one of the purpose in this grant (2022, Journal of Photopolymer Science and Technology, in press). The main result of this paper is developing new coating technology, which includes successful attachment the MPC polymer brash followed by DLC pre-coating on the material. This achievement enables us to develop the MPC polymer coating for some materials which could not be applied for MPC one due to its unfavorable characteristics. In other words, we got a new technology to apply the MPC to the various materials by DLC-MPC hybrid strategy. In terms of future perspectives, we have two issues at the time. One is whether this technology leads to improved stability of the MPC coating (anti-removal coating effect), the other is application for inner surface of the small lumen structure such as artificial vascular graft, and catheter.

Academic Significance and Societal Importance of the Research Achievements

本成果の学術的意義は基材表面修飾法の新規開発である。社会的意義としては、本技術の開発により、医療用基材へのMPCコーティングの応用範囲が拡大される。今回の成果は平板基材への成膜成功だが、最終的にはDLCの独自成膜技術(特許申請済み)を用いることで、小口径細管内腔面への応用を進めている。つまり、小口径人工血管の開存性向上、およびカテーテル領域におけるポリマー塞栓予防(対剥離性能付与)の解決策として提案することを目指している。よって、本課題研究期間中の成果は、目標へ向けた大きな一歩となった。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (17 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 2 results) Presentation (11 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Surface Functionalization of Diamond-like Carbon Film with Biocompatible Polymer Brushes2022

    • Author(s)
      Sasai, D. Ousaka, Y. Fujii, A. Isono, Y. Yamauchi, S. Kondo and T. Nakatani
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: In Press

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 医療分野に貢献する日本医用DLC研究会の設立と今後の展望2021

    • Author(s)
      中谷達行、逢坂大樹
    • Journal Title

      Journal of Economic Maintenance Tribology, 潤滑経済

      Volume: 675 Pages: 17-21

    • Related Report
      2021 Annual Research Report
  • [Journal Article] 日本医用DLC研究会の設立と活動概要2020

    • Author(s)
      中谷達行、逢坂大樹
    • Journal Title

      メカニカル・サーフェス・テック

      Volume: 12 Pages: 28-30

    • Related Report
      2020 Research-status Report
  • [Journal Article] Effects of Plasma Surface Treatment on Cell Adhesion to Biocompatible Polymer Brushes2019

    • Author(s)
      Yasushi Sasai, Naoki Doi, Yukinori Yamauchi, Masayuki Kuzuy, Shin-ichi Kondo
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 32 Issue: 3 Pages: 529-533

    • DOI

      10.2494/photopolymer.32.529

    • NAID

      130007744426

    • ISSN
      0914-9244, 1349-6336
    • Year and Date
      2019-06-24
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Comprehensive results of protein adsorption, platelets adhesion, and blood clot formation on the DLC-coated surface of ePTFE vascular graft2022

    • Author(s)
      Yasuhiro Fujii , Takashi Goyama , Tatsuyuki Nakatani , Daiki Ousaka , Yuichi Imai , Noriaki Kuwada , Tatsunori Tsuji , Genya Muraoka , Haruhito Uchida , Masahiro Nishibori , Susumu Oozawa , Shingo Kasahara
    • Organizer
      2022 ASAIO Annual Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ポリウレタンに対するDLCコーティングによるS. aureusの抑制2022

    • Author(s)
      桒田憲明、種本和雄、藤井泰宏、辻龍典、笠原真悟、逢坂大樹、中谷達行
    • Organizer
      第120回 日本循環器学会中国四国地方会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Biomimetic Diamond-like Carbon Coating on a Lumen of Small-diameter Long-sized Tube Modified Surface Uniformly with Carboxyl Group Using Oxygen Plasma2022

    • Author(s)
      Yuichi Imai, Hiroyuki Fukue, Tatsuyuki Nakatani, Shinsuke Kunitsugu, Kazuhiro Kanda, Tsuneo Suzuki, Shogo Watari, Yasuhiro Fujii, Daiki Ousaka, Susumu Oozawa, Tomio Uchi
    • Organizer
      The 39th International Conference of Photopolymer Science and Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Surface Functionalization of Diamond-like Carbon Film with Biocompatible Polymer Brushes2022

    • Author(s)
      Y. Sasai, D. Ousaka, Y. Fujii, A. Isono, Y. Yamauchi, S. Kondo and T. Nakatani
    • Organizer
      The 39th International Conference of Photopolymer Science and Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Application of Diamond-Like Carbon (DLC) for Artificial Vascular Graft: New Technologies, Benefits, and Future Innovations2021

    • Author(s)
      藤井泰宏、逢坂大樹、中谷達行
    • Organizer
      THERMEC'2021 Virtual Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 剥離・塞栓症予防を目指した次世代型カテーテル成膜技術の開発2020

    • Author(s)
      藤井泰宏、中谷達行、逢坂大樹
    • Organizer
      イノベーションジャパン大学見本市(JST)
    • Related Report
      2020 Research-status Report
  • [Presentation] Diamond-Like-Carbonコーティングの医療応用とその未来2020

    • Author(s)
      逢坂大樹、藤井泰宏、大澤晋、中谷達行、笹井泰志、今井裕一
    • Organizer
      岡山テックプラングランプリ
    • Related Report
      2020 Research-status Report
  • [Presentation] Diamond-like carbon成膜技術を応用したePTFE人工血管の血液適合性評価 ~先天性心疾患術後の合併症軽減を目指して~2020

    • Author(s)
      逢坂大樹, 合山尚志, 村岡玄哉, 中谷達行, 今井裕一, 桒田憲明, 藤井泰宏, 大澤晋, 笠原真悟
    • Organizer
      第56回日本小児循環器学会総会・学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] NEXAFS evaluation for the lumen of DLC coated small diameter long-sized medical objective tube by using AC high-voltage burst plasma CVD method2020

    • Author(s)
      Yuichi Imai, Kazuhiro Kanda, Yasuhiro Fujii, Susumu Ouzawa, Daiki Ousaka, Tatsuyuki Nakatani
    • Organizer
      12th International Symposium of Advanved Plasma Science and its Applications for Nitrides and Nanomaterials 13th International Conference on Plasma-Nano Technology and Science
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 生体適合性高分子ブラシへの細胞接着におけるプラズマ表面処理の効果2019

    • Author(s)
      笹井泰志、土井直樹、山内行玄、葛谷昌之、近藤伸一
    • Organizer
      第36回国際フォトポリマーコンファレンス
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Diamond-Like CarbonコーティングePTFE人工血管によるAeteriovenous Graftの開存性の向上2019

    • Author(s)
      合山尚志, 村岡玄哉, 逢坂大樹, 中谷達行, 今井裕一, 藤井泰宏, 大澤晋
    • Organizer
      第60回日本脈管学会総会
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] 尿路留置カテーテル2020

    • Inventor(s)
      和田里章悟,逢坂大樹,荒木元朗,和田耕一郎,大澤晋, 他4名
    • Industrial Property Rights Holder
      和田里章悟,逢坂大樹,荒木元朗,和田耕一郎,大澤晋, 他4名
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-122972
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 内面被覆チューブ2020

    • Inventor(s)
      今井裕一,中谷達行,國次真輔,大澤晋,逢坂大樹,藤井泰宏
    • Industrial Property Rights Holder
      今井裕一,中谷達行,國次真輔,大澤晋,逢坂大樹,藤井泰宏
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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