Omar F. Jimenez,Nicholas R. Powley,Andrew G. Fischer,Yefim Safris
申请号：
US14318196
公开号：
US09474626B2
申请日:
2014.06.27
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.
