Title:
BIOMATERIAL MEMBER
Document Type and Number:
WIPO Patent Application WO/2004/022118
Kind Code:
A1
Abstract:
It is intended to provide a biomaterial member made of an amorphous alloy which shows a polarization resistance in degassed Hank’s solution of 4x106 &ohm cm2 or more and an immersion potential-pitting corrosion potential window of 0.25 V or more. In an appropriate embodiment, the above biomaterial is made of an amorphous alloy having a Young’s modulus of 100 GPa or less. Such a biomaterial is free from Ni serving as an allergy source and highly resistant to corrosion due to biological fluids. In addition, it has a high strength and a low modulus of elasticity, scarcely reacts with a living body and can be easily drawn out after the completion of a treatment. In the case of using as a bone marrow nail or the like, it scarcely causes problems such as so-called stress shield and pulmonary infarction. Owing to these characteristics, it is the most desirable artificial bone material to be used in, for example, a bone marrow nail (1) which is embedded in a bone A and then fixed with an interlocking nail (a horizontally fastening screw) (2), a bone connection plate, or a bone fastening screw.
Inventors:
NAKAMUA KOZO (JP)
OHNISHI ISAO (JP)
HANAWA TAKAO (JP)
HIROMOTO SACHIKO (JP)
MARUYAMA NORIO (JP)
ARAI TOSHIO (JP)
OFUNE HITOSHI (JP)
ISHIDA MAMORU (JP)
OHNISHI ISAO (JP)
HANAWA TAKAO (JP)
HIROMOTO SACHIKO (JP)
MARUYAMA NORIO (JP)
ARAI TOSHIO (JP)
OFUNE HITOSHI (JP)
ISHIDA MAMORU (JP)
Application Number:
PCT/JP2003/011263
Publication Date:
March 18, 2004
Filing Date:
September 03, 2003
Export Citation:
Assignee:
YKK CORP (JP)
NAT INST FOR MATERIALS SCIENCE (JP)
NAKAMUA KOZO (JP)
OHNISHI ISAO (JP)
HANAWA TAKAO (JP)
HIROMOTO SACHIKO (JP)
MARUYAMA NORIO (JP)
ARAI TOSHIO (JP)
OFUNE HITOSHI (JP)
ISHIDA MAMORU (JP)
NAT INST FOR MATERIALS SCIENCE (JP)
NAKAMUA KOZO (JP)
OHNISHI ISAO (JP)
HANAWA TAKAO (JP)
HIROMOTO SACHIKO (JP)
MARUYAMA NORIO (JP)
ARAI TOSHIO (JP)
OFUNE HITOSHI (JP)
ISHIDA MAMORU (JP)
International Classes:
A61L27/00; A61B17/86; A61F2/00; A61L31/02; A61L31/14; C22C9/00; C22C13/00; C22C14/00; C22C16/00; C22C18/00; C22C19/07; C22C38/00; C22C38/38; C22C45/10; A61B17/72; A61B17/78; A61B17/80; (IPC1-7): A61L27/04; A61B17/58
Other References:
HIROMOTO S. ET AL.: "Surface composition and anodic polarization behavior of zirconium-based amorphous alloys in a phosphate-buffered saline solution", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 149, no. 4, April 2002 (2002-04-01), pages B117 - B122, XP002969375
LOPEZ M.F. ET AL.: "In vitro corrosion behavior of titanium alloys without vanadium", ELECTRO CHIMICA ACTA, vol. 47, no. 9, February 2002 (2002-02-01), pages 1359 - 1364, XP004339047
SHOKO HIROMOTO: "Amorphous gokin no taiseitai kankyosei-amorphous gokin no seitai kankyo deno tokuiteki fushoku kyodo-", FUSHOKU BOSHOKU SYMPOSIUM SHIRYO, vol. 126, 1999, pages 64 - 71, XP002969376
LOPEZ M.F. ET AL.: "In vitro corrosion behavior of titanium alloys without vanadium", ELECTRO CHIMICA ACTA, vol. 47, no. 9, February 2002 (2002-02-01), pages 1359 - 1364, XP004339047
SHOKO HIROMOTO: "Amorphous gokin no taiseitai kankyosei-amorphous gokin no seitai kankyo deno tokuiteki fushoku kyodo-", FUSHOKU BOSHOKU SYMPOSIUM SHIRYO, vol. 126, 1999, pages 64 - 71, XP002969376
Attorney, Agent or Firm:
Yoshida, Shigeki (Harada Bldg. 14-2, Takadanobaba 2-chom, Shinjuku-ku Tokyo, JP)
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