Connection member for the connection of a resilient rod with a bone screw which can be anchored in a vertebra
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United States of America Patent
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Aug 19, 1997
Grant Date -
N/A
app pub date -
Jun 30, 1995
filing date -
Jun 30, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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