| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow a threaded shaft to be inclined more largely with respect to a tulip-like head regarding a pedicle screw used as an implant for correcting and stabilizing the spine. <P>SOLUTION: The pedicle screw includes a head part 2 provided at one axial end of the threaded shaft 1, and the tulip-like head 3 having a receiving part opened to the threaded shaft 1 side to receive the head part 2. A head part holder 7 for holding the head part 2 from the threaded shaft 1 side is provided in the receiving part. The head part holder 7 is mounted to be swingable, by at least one pin 9, around an axis extended in a radial direction viewed from a longitudinal axis 8 of the tulip-like head. <P>COPYRIGHT: (C)2012,JPO&INPIT |
