Bone connective prosthesis comprising a reinforcement element carrying a polymer layer having a varying modulus of elasticity
US4280233A · kind A · utility
Inventor
Key dates
| Filing date | Aug 3, 1979 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Aug 3, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249955
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Improved bone connective prostheses are disclosed. The prostheses comprise a reinforcement element carrying a polymer layer having a varying modulus of elasticity. The exterior surface of the polymer layer constitutes the bone attachment surface of the prostheses and has the lowest modulus of elasticity. The interior surface of the polymer layer is attached to reinforcement element and has the highest modulus of elasticity. Portions of the polymer layer lying between the exterior and the interior surface of the polymer layer have moduli of elasticity which are intermediate with respect to the moduli of elasticity of the exterior and interior surface of the layer. The modulus of elasticity of the layer decreases in the direction of interior to exterior. The decrease in modulus of elasticity may be either continuous or incremental. The reinforcement element may have either a simple or a complex structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.