Implant for anterior dorsolumbar spinal osteosynthesis, intended for the correction of kyphoses

摘要

This implant has in combination a pair of clamps (2) provided with spikes (3) and with screws (5) for fixing to two corresponding vertebrae (V2, V4) and notches (23) to support the tips of the blades of a pair of distraction forceps, a rigid plate (6) for interconnecting the two clamps (2) and whose ends are pierced with orifices (17) in which may engage threaded pieces (12) of the camps (2) and whose length (L) corresponds to the distance between the posterior orifices (9) of the clamps (2) after distraction of the vertebrae, and lastly nuts (7) for rigidly connecting together the plate (6) and the clamps (2). This implant has, in particular, the advantage of permitting distraction by the forceps bearing against the clamps instead of against the vertebrae, which was not possible with the previously known plates; in addition, it is compact while at the same time being sufficiently solid, and thus prevents any risk of rubbing against the aorta.