Devices and methods include an anchor assembly engageable to a vertebra and a connecting element positionable through a receiver of the anchor assembly. The receiver includes chamfered surfaces along a leading end of the receiver to facilitate endwise insertion of the connecting element into the passage....http://www.google.es/patents/US20070270806?utm_source=gb-gplus-sharePatente US20070270806 - Devices and methods for receiving elongated connecting elements in spinal surgical procedures
Devices and methods for receiving elongated connecting elements in spinal ...
