Ryan M. Kretzer,Bryan W. Cunningham,Jeffrey Gordon
申请号：
US13176594
公开号：
US08968367B2
申请日:
2011.07.05
申请国别(地区):
US
年份:
2015
代理人:
摘要：
Compression-distraction spinal fixation systems, and methods of performing compression-distraction spinal fixation, are provided that include screw-rod constructs having a ratcheting mechanism. Bone screws of the screw-rod constructs can have a pawl that engages ratchet teeth on the rod of the screw-rod construct. The bone screw can be unidirectionally ratcheted along the length of the rod to apply compressive or distractive forces. Tools for manipulation of the screw-rod constructs are also provided, which tools include distal tips configured to engage the bone screws.
