Joshua D. Auerbach;Christoph E. Heyde;Francesco Siccardi;Zsolt Fekete;Meinrad Fiechter
发明人:
Joshua D. Auerbach,Zsolt Fekete,Meinrad Fiechter,Christoph E. Heyde,Francesco Siccardi
申请号：
US13426214
公开号：
US09155567B2
申请日:
2012.03.21
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A polyaxial pedicle screw may include a receiving head having a transversal U-shaped passage, and a shank having a threaded portion external to the receiving head, and a bulging end rotatable housed within the receiving head. The polyaxial pedicle screw may include a locking insert housed within the receiving head and matable with the bulging end, for locking it into position, and a set-screw engaged in the distal aperture for locking a connecting rod received within the transversal U-shaped passage. The receiving head of the polyaxial screw may include a lateral aperture, the lateral aperture exposing a contact surface of the locking insert in such a way that external pressing component can act on the contact surface to maintain the locking insert into its locking position.
