Andrew H. Cragg;Robert L. Assell;Stephen D. Ainsworth;Bradley Wessman
发明人:
Stephen D. Ainsworth,Robert L. Assell,Andrew H. Cragg,Bradley Wessman
申请号：
US12821286
公开号：
US08167947B2
申请日:
2010.06.23
申请国别(地区):
US
年份:
2012
代理人:
摘要：
Disclosed are methods and apparatus for the provision of spinal therapy to two or more adjacent motion segments accessed through a trans-sacral approach. The spinal therapies include fusion and dynamic stabilization with and without a distraction of the most cephalad motion segment of the two or more adjacent motion segments provided therapy. The disclosure includes methods and apparatus to impart a push distraction to increase the distance between two adjacent vertebrae. Related concepts for the extraction of previously inserted devices and the delivery and removal of plugs for plugging the interior cavities of implantable devices are disclosed.
