Composite femoral implant having increased neck strength
US5522904A · kind A · utility
37Cited by
24References
55Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1993 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Oct 13, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7532
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A femoral implant for a hip prosthesis includes a shaft oriented in a longitudinal direction and a neck extending from said shaft at an acute angle .theta. to the longitudinal direction. The implant includes a plurality of layers of fibers in a matrix, wherein the fibers are substantially unidirectional in each respective layer. The implant is made from a stack of layers of the matrix so that the direction of fibers is unbalanced. At least 50% of the fibers are oriented in the .theta. direction and the remainder of said fibers are oriented in directions other than the .theta. angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.