Patella replacement apparatus
US6146423A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1999 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Jan 28, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/3877
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A patella replacement device consists of a porous metal insert which is surrounded by a metallic ring which is press-fit to a portion of the insert. The porous insert has cement accommodating apertures. A polyethylene device or biocompatible articulating material has projections which fit into the apertures in the porous insert and the combination is used for the repair or replacement of the patella bone. The porous metal insert consists of a high porosity metal material for initial stability through the adhesive and frictional properties of the metal material and allows for articulation of one polyethylene or metal bearing surface to a normal non-resurfaced femur or a femur that has been resurfaced with a prosthetic replacement device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.