Intervertebral cage

摘要

The cage consists of a disc-shaped spacer (1) with two opposite faces (2, 3) linked by a side wall (13) and a rotary anchor plate (4) connected to the spacer by a spindle (20) passing through an aperture (21) in the spacer wall. The spindle is fixed in place relative to the spacer wall by a lock (26) formed by a splayed spindle end (22) which also holds the plate against the spacer's side wall. A slot (31) in the face of the plate allows insertion of an instrument to rotate it.