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:
Nov. 09, 1999
Filed:
May. 01, 1997
Applicant:
Inventors:
Larry L Hench, London, GB;
Guy La Torre, Gainesville, FL (US);
Oscar P Filho, Sao Carlos, BR;
Edgar Zanotto, Sao Carlos, BR;
Assignee:
University of Florida Research Foundation, Gainesville, FL (US);
Primary Examiner:
Int. Cl.
CPC ...
C03C / ; A61F / ;
U.S. Cl.
CPC ...
501-5 ; 501 63 ; 501 72 ; 106 35 ; 623 16 ; 623 66 ; 523114 ; 523115 ;
Abstract
A bioactive ceramic composition including 47 to 51% SiO.sub.2, 23 to 25% CaO, 23 to 25% Na.sub.2 O and 0 to 6% P.sub.2 O.sub.5, the bioactive ceramic having a bioacitivity level such that the composition forms at least a thin layer of HCA within about 30 hours of implantation into a patient. The bioactive ceramic composition having a crystallinity of 34 to 60 volume percent and a crystalline phase of 1Na.sub.2 O.2CaO.3SiO.sub.2.