Rodney R. Ballard,Julien J. Prevost,Christopher F. Scifert
申请号：
US12879620
公开号：
US20120065687A1
申请日:
2010.09.10
申请国别(地区):
US
年份:
2012
代理人:
摘要：
Vertebral rods are provided that have predetermined curvatures to support various sections of the spine. The vertebral rods include a first end that is attached to a lower region of the spine, and a second end that is attached to an upper region of the spine. The construction of the rod results in a change in stiffness along the length between the first and second ends. The rods may also include predetermined curvatures to support various sections of the spine. The rods may include two of more longitudinal sections with different radii of curvatures to accommodate attachment to the various regions of the spine. The rods may also include one or more substantially straight sections. The rods may include a length to extend along a limited portion of the spine, or may extend along a majority of the spine. Further, the rods include a varying stiffness along the length. The stiffness generally decreases from the first end that is attached to a lower region of the spine to the second end that is attached to a higher region of the spine.
