Title:
放射線及び熱処理を用いた低摩耗ポリエチレンの架橋
Document Type and Number:
Japanese Patent JP4187712
Kind Code:
B2
Abstract:
The present invention discloses methods for enhancing the wear-resistance of polymers, the resulting polymers, and in vivo implants made from such polymers. One aspect of this invention presents a method whereby a polymer is irradiated, preferably with gamma radiation, then thermally treated, such as by remelting or annealing. The resulting polymeric composition preferably has its most oxidized surface layer removed. Another aspect of the invention presents a general method for optimizing the wear resistance and desirable physical and/or chemical properties of a polymer by crosslinking and thermally treating it. The resulting polymeric composition is wear-resistant and may be fabricated into an in vivo implant.
Inventors:
Shen, Fu Wen
Mackelop, Harry, A.
Saravie, Ronald
Mackelop, Harry, A.
Saravie, Ronald
Application Number:
JP2004306238A
Publication Date:
November 26, 2008
Filing Date:
October 20, 2004
Export Citation:
Assignee:
The Orthopedic Hospital
The University of Southern California
The University of Southern California
International Classes:
A61F2/30; A61L27/00; A61F2/00; A61F2/02; A61F2/32; A61F2/34; A61F2/46; A61L27/16; B29C71/02; B29C71/04; C08F110/02; C08F110/06; C08J3/24; C08J3/28; C08J5/16; C08L23/00; C08L101/00; C08L101/16; A61F2/36; B29C35/08; B29C43/00; B29C43/16
Domestic Patent References:
| JP4218504A | ||||
| JP9122222A |
Foreign References:
| WO1996009330A1 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Kato Kazunori
Katsuichi Nishimoto