Femoral prosthesis and knee prosthesis with them
US11963879B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2021 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Jan 20, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/30329
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A femoral prosthesis includes a femur body and a cam portion. A joint surface of the femur body has a first joint surface portion for abutting a tibial prosthesis within a first knee flexion angle range from a first knee flexion angle to a second knee flexion angle, and a second joint surface portion for abutting the tibial prosthesis within a second knee flexion angle range from the second knee flexion angle to a third knee flexion angle. At the second knee flexion angle, the first joint surface portion has a first radius of curvature, and the second joint surface portion has a second radius of curvature. A center of a circle of an anterior joint surface of the cam portion is located in a first quadrant of a circle with the second radius of curvature in a sagittal section when the femoral prosthesis is in an extended state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.