Composite artificial socket and hip joint prosthesis
US5549695A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1994 |
| Grant date | Aug 27, 1996 |
| Priority date | — |
| Expiry date | Aug 16, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00011
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The socket (2) comprises a metallic outer shell (4), an intermediate shell (5) of plastics and a metallic inner shell (6), which may be inserted into the latter using a connection by shape. The outer shell (4) is divided into segments (4a, 4b, 4c, 4d, 4e) by recesses (9) open towards its equatorial marginal region. The outer shell (4) and the inner shell (6) are rigidly supported against each other in the direction of a common main axis (A) by a contact portion (8), and are non-rotatably connected by an attachment element (15) eccentrically offset with respect to the main axis (A). The intermediate shell (5) has an aperture (20), which receives the contact portion (8), and an outer surface (21), which has a supporting portion (21a) for bearing onto a portion of the inner surface (18) of the outer shell (4), and outside this supporting portion (21a) delimits with the remaining portion of the inner surface (18) a spacing (S), which allows corresponding relative movement of the intermediate shell (5), which contains the inner shell (6), and at least one of the segments (4a, 4b, 4c, 4d, 4e) of the outer shell (4) transversely to the main axis (A). The implanted outer shell (4) may, und…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.