Modular knee prosthesis
US4936853A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1989 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Jan 11, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/30604
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an implantable knee joint prosthesis which is designed to replace the engaging surfaces of the femur and tibia of a dysfunctional human knee joint. In its most general form, the invention comprises an implantable knee joint prosthesis having a tibial stem portion, a tibial tray portion, an interchangeable modular articulating surface member which is removably attached to the tibial tray portion, and a femoral portion adapted to cooperatively bear upon the articulating surface. The invention also features a dual locking mechanism which attaches the articulating surface to the tibial tray portion by means of a locking lip and flange arrangement together with a locking screw which fits into the tibial stem portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.