Connection member for the connection of a resilient rod with a bone screw which can be anchored in a vertebra
US5658284A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1995 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Jun 30, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00862
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A connection member for the connection of a resilient rod with a bone screw that can be anchored in a vertebra. The connection member comprises a fastener that acts on the rod, an accommodation part and a connection part. The accommodation part has a first opening for the accommodation of the rod. The first opening has a substantially round inner boundary surface formed from several partial surfaces with at least three different radii of curvature such that upon connection of the connection member with the resilient rod, the connection member has at least three regions of contact with the resilient rod at least three distinct and non-contiguous points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.