Adapter for peduncular (pedicle-type) screwing-in of ringed bars

摘要

Adapter formed by a body having an arco-convex surface 9 for contact with the vertebral column (spine); a pair of threaded holes 8 for its fastening onto a ringed bar, with respect to which it is able to slide in guided adjustment and be fixed without the possibility of involuntary displacement; and a lateral expansion 4 for peduncular fastening. <IMAGE>