Unbalanced prosthetic device for providing side-dependent twisting-rotational axial-loading coupling
US6299649A · kind A · utility
Inventors
Key dates
| Filing date | Jul 26, 1999 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Jul 26, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00173
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention discloses a side-dependent prosthetic device. The side-dependent prosthetic device is a composite prosthetic device with a longitudinal direction. The composite prosthetic device includes a plurality of plies wherein each ply being composed of a plurality of reinforced fibers aligned in a ply orientational angle .theta.i relative to the longitudinal direction of the prosthetic device, where i=1,2,3, . . . ,N and N being the number of the plies. The plurality of plies are laminated together for forming the prosthetic device wherein the ply orientational angles being arranged such that .theta.1+.theta.2+.theta.3+ . . . +.theta..sub.N -0 thus forming an unbalanced composite prosthetic device. In another preferred embodiment, the ply orientational angles .theta.i forming a sequence which is represented by ((.theta..sup.1 /.theta..sup.2).sub.s).sub.n where a first ply with orientational angle .theta..sup.1 being followed by a second ply with orientational angle .theta..sup.2 wherein such a sequence repeated n-times and arranged to be symmetrical to a mid-plane, wherein .theta..sup.1 being an angle close to -10.sub.i and .theta..sup.2 being an angle close to -20.sub…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.