| 摘要 |
A dynamic bone anchor is provided comprising
a longitudinal core member (2, 2', 2", 2"') having a first end (21) and a second end (22) and a longitudinal axis (L) extending through the first end and the second end;
at least one tubular segment (3, 3', 3") provided on the core member, the tubular segment having an outer bone engagement structure (31);
wherein in a first configuration the at least one tubular segment is movable on the core member along the longitudinal axis; and
wherein in an optional second configuration, the at least one tubular segment is fixed relative to the core member. Two ore more tubular segments may be provided. |
