Title:
BONE PROTEASE EQUIPPED WITH SURFACE REGION OF DIRECT CAST MACRO-TEXTURE AND MANUFACTURE THEREFOR
Document Type and Number:
Japanese Patent JP3895788
Kind Code:
B2
Abstract:
PURPOSE: To attempt enhanced fixing mechanism of implant protease into hard tissue in a living body by forming an engagement surface toward outside of bone protease, at least in which part, firming a macro-textured porous surface having an undercut bordered profile integrally with the protease.
CONSTITUTION: For example, acetabulum shell 20 includes an outer bone engagement surface 22, and a macro-textured porous surface 24 is held by the entire outer bone engagement surface. The bone engagement surface 22 is equipped with a plural number of holes 26 for receiving bone screws. The macro-textured porous surface 24 has holes 28, some of which form undercut borders 30. The macro-textured surface 24 is formed from holes 28 having a diameter of about 150-600 micrometers or a characteristic size. Further, the porosity of a hole 28 is preferably about 30-60% and an undercut of a hole 28 is preferably about 0.5-1.5 mm in depth.
Inventors:
David El LaSalle
Timothy M Flynn
Salvator Calderize
Lichyard P. Mangineri
Timothy M Flynn
Salvator Calderize
Lichyard P. Mangineri
Application Number:
JP5329495A
Publication Date:
March 22, 2007
Filing Date:
February 17, 1995
Export Citation:
Assignee:
Ji Young Son & Ji Young Son Professional Incorporated
International Classes:
A61F2/28; A61F2/30; B22C7/02; B22C9/04; B22D25/02; B29C67/00; A61F2/00; A61F2/34; A61F2/36; A61F2/38; B29C33/38; (IPC1-7): A61F2/28; B22C7/02; B22C9/04; B22D25/02
Domestic Patent References:
| JP2257947A | ||||
| JP5176949A | ||||
| JP6235966A |
Foreign References:
| EP0420542A1 | ||||
| EP0621018A1 |
Attorney, Agent or Firm:
Heikichi Odashima
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