H. Lee Moffitt Cancer Center and Research Institute, Inc.;University of South Florida
发明人:
Frank D. Vrionis,Kamran Aghayev,Sabrina A. Gonzalez Blohm,James J. Doulgeris
申请号：
US15728898
公开号：
US20180092751A1
申请日:
2017.10.10
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A method and system for performing bone fusion and/or securing one or more bones, such as adjacent vertebra, are disclosed. The screw includes a threaded distal piece fixedly attached connected to an inner post. Both the inner post and the proximal piece have non-cylindrical receptacles at their proximal ends for engagement with driving tools. Independent rotation of the proximal piece and the distal piece enables for compression or decompression to modify the gap between two bones or bone fragments. During use, the distal piece of the bone screw is placed at least partially within a distal bone, the proximal piece is placed at least partially within a proximal bone, and one of two pieces is rotated while the other is held in a fixed position, causing movement of the proximal and distal bones relative to each other.
