Asymmetric hip stem
US6007581A · kind A · utility
19Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Jul 1, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00029
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved asymmetric femoral hip stem component for use in cementless hip replacement procedures is described. The stem comprises a proximal region having a novel three-dimensional configuration to allow for better fit and stability of the stem within the femoral intramedullary canal with minimal removal of strong bone therefrom. The stem further includes a twist isolated in the mid-stem region to improve fit while minimizing enlargement of the femoral canal. A distal end comprising a rotated internal slot is also described, wherein the slot reduces bending stiffness of the stem in both the coronal and sagittal planes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.