Spacing member for tooth implant
US5662474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Dec 5, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C8/006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a spacing member for a tooth implant, comprising a base portion for attachment to a fixture implanted in the jawbone, and an upper part with an essentially conical outer limit surface for attachment to a tooth prosthesis. The base portion comprises a through hole for a spacing screw which is intended to engage with an internally threaded bore in the upper portion of the fixture and thereby form a first screw connection for locking the spacing member securely in a defined direction of deflection in relation to the fixture. The upper part comprises a second screw connection for attachment of the tooth prosthesis, which screw connection forms a fixed angle .delta. in relation to the first screw connection. The upper part of the inlet opening for the through hole which is formed in the conical outer limit surface in the upper part of the spacing member, and through which opening the spacing screw is intended to be introduced during assembly, is offset towards the line of symmetry of the through hole. In this way, the height of the spacer can be kept low, even in those cases where the fixed angle .delta. between the two screw connections is comparatively small, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.