Fixed-bearing knee prosthesis having interchangeable components
US8128703B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2009 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Nov 17, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fixed-bearing prosthesis includes a femoral component having a medial condyle surface and a lateral condyle surface. The knee prosthesis also includes a bearing having a medial bearing surface configured to articulate with the medial condyle surface of the femoral component, and a lateral bearing surface configured to articulate with the lateral condyle surface of the femoral component. A tibial tray is secured to the bearing. The tibial tray has a platform with an elongated stem extending downwardly from a lower surface thereof. A posterior buttress extends along a posterior section of the perimeter of the tray's platform, and an anterior buttress extends along an anterior section of the perimeter of the tray's platform. Differently-sized tibial trays are interchangeable with differently-sized bearings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.