Bone implant prosthesis with substantially stress-free outer surface
US4851008A · kind A · utility
119Cited by
11References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Feb 1, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/0091
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone implant prosthesis having an outer stress-free surface and a subsurface carried generally beneath and parallel to the outer surface for bearing tensile stresses. The prosthesis of the invention includes a plurality of slots undercutting the outer surface of the prosthesis thus forming a stress bearing subsurface to free the outer surface from being subjected to substantial stresses. The stress-free outer surface is readily adaptable to receive a porous coating to enhance bone ingrowth without decreasing the stress resistance characteristics of the prosthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.