The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 2014
Filed:
Mar. 26, 2007
Masayuki Kyomoto, Tokyo, JP;
Kazuhiko Ishihara, Tokyo, JP;
Yasuhiko Iwasaki, Tokyo, JP;
Toru Moro, Tokyo, JP;
Kozo Nakamura, Tokyo, JP;
Yoshio Takatori, Tokyo, JP;
Hiroshi Kawaguchi, Tokyo, JP;
Tomohiro Konno, Tokyo, JP;
Noboru Yamawaki, Osaka, JP;
Masayuki Kyomoto, Tokyo, JP;
Kazuhiko Ishihara, Tokyo, JP;
Yasuhiko Iwasaki, Tokyo, JP;
Toru Moro, Tokyo, JP;
Kozo Nakamura, Tokyo, JP;
Yoshio Takatori, Tokyo, JP;
Hiroshi Kawaguchi, Tokyo, JP;
Tomohiro Konno, Tokyo, JP;
Noboru Yamawaki, Osaka, JP;
Kyocera Medical Corporation, Osaka, JP;
The University of Tokyo, Tokyo, JP;
National University Corporation Tokyo Medical and Dental University, Tokyo, JP;
Abstract
The object of the present invention is to provide a joint prosthesis, bearing material and a production method thereof, which suppresses wear in a sliding section and suppresses the production of abrasive powder even during repeated daily operation. To achieve the object, there is provided a biomaterial comprising: a substrate made of metal, alloy or ceramic; and a biocompatible material layer laminated on the substrate, wherein hydroxyl groups are formed on the substrate by surface-treating, while the biocompatible material layer comprises a polymer containing phosphorylcholine groups, the substrate and the biocompatible material layer are bound via a binder layer which is combined with the hydroxyl groups of the substrate and with the biocompatible material layer.