Shaft for an articulation endoprosthesis
US5571202A · kind A · utility
31Cited by
12References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Sep 19, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0019
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A shaft for an articulation endoprosthesis has a metallic core (1), a proximally connected neck part (10) and an envelope (2) made of a non-metallic, elastic material that distally surrounds the core. Adherence between the core (1) and the envelope is ensured by a form fit and/or by a frictional connection. The non-metallic material of the envelope has a modulus of elasticity between 500 and 10,000 N/mm.sup.2. The envelope is provided with an additional superficial layer (3) made of biocompatible material having thickness of less that 600 .mu.m and a higher surface hardness than the envelope (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.