A minimally invasive system includes a bone screw (100), and a tissue retractor (200) having a partial pathway through it. The tissue retractor is removably couplable to the bone screw. An instrument (400) has a hollow cavity (406) and is removably couplable to the tissue retractor. A drive shaft (504) for a cap (700) of the bone screw has a diameter less than a diameter of the hollow cavity. A counter- torque handle (600) has an interlock end portion (604) by means of which it can be rotatably fixed to the instrument. The interlock end portion also includes an open-ended slot having a width greater than the drive shaft diameter such that the counter- torque handle is movable to and from the assembled configuration while the drive shaft is within the hollow cavity. A removal instrument (1200) has an interface (1204) for removing the retractor from the screw.
申请公布号
WO2011133160(A1)
申请公布日期
2011.10.27
申请号
WO2010US32157
申请日期
2010.04.23
申请人
SYNTHES USA, LLC;SYNTHES GMBH;PETERSON, JOE;SOLITARIO, RALPH