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Fundamental Study on Improvement of Artificial Joint with the Functional Surface structure

Research Project

Project/Area Number 07458233
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biological material science
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

YUHTA Toshio  Hokkaido Univ., Fac.of Eng., Prof., 工学部, 教授 (70001170)

Co-Investigator(Kenkyū-buntansha) NISHIMURA Ikuya  Hokkaido Univ., Fac.of Eng., Instructor., 工学部, 助手 (00228214)
SHIMOOKA Toshiyuki  Hokkaido Univ., Fac.of Eng., Asso.Prof., 工学部, 助教授 (50196549)
MATSUNO Takeo  Hokkaido Univ., School of Med., Asso.Prof., 医学部, 助教授 (10165847)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1996: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1995: ¥4,700,000 (Direct Cost: ¥4,700,000)
KeywordsArtificial Joint / Friction and wear / Wear of cup / Functional Surface Structure / Supply of Lubricant / Trap of wear dust / Pattern / Spherical Accuracy
Research Abstract

The aim of this study is the long term clinical use of artificial joint by preventing wear dibris of high-density polyethylene (HDP) using "patterning" for frictional surfaces. The effect of frictional surface of the metal (SUS316L,Co-Cr alloy) vs HDP were investigated.
From the results of the friction tests with the pin-on-disk experimental system, we found that the introduction of surface patterns enhances lubrication conditions between the metal) and HDP and reduces the creation of wear particles of HDP.The optimum sizes for the diameter and the pitch of the pattern were found. And good lubrication was maintained not in a short time but for a long time during the test.
Based on these studies, we experimented the friction tests between the patterned femoral heads and acetabular cups with a hip simulator. In this result, we couldn's find decrease of the coefficient of friction. But the effect of patterning for good lubrication was suggested from the observation of the frictional surfaces with a light microscope. However, if the patterned head had bad condition on surface, lubrication would get worse. Therefore, we have to investigate about the good way of patterning on the surface of head and on the contact area of cup. Moreover we have to improve our simulator, for example the way of loading to friction surface. Then the problem after this are development of the new hip simulator and experiment with it again.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 西村生哉: "機能性表面構造を有する人工関節に関する基礎的研究" 生体材料. 13. 266-271 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 勇田敏夫: "超精密生産技術大系(第4巻)応用技術.人工骨" (株)フジテクノシステムズ, 978 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] NISHIMURA,IKUYA: "Improvement of the Frictional Surface of the Artificial Joint." J.Japan.Soc.Biomater. 13-6. 266-271 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] YUHTA,TOSHIO: ULTRA PRECISION MANUFACTURING TECHNOLOGY Vol, 4. Technology of application. Fuji Techsystemes Co., LTD, 978 (546-549) (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 勇田敏夫: "超精密生産技術大系(第4巻)応用技術.人工骨" (株)フジテクノシステムズ, 978 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 西村生哉: "機能性表面構造を有する人工関節に関する基礎的研究" 生体材料. 13. 266-271 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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