SPINAL DEFORMITY CORRECTION INSTRUMENTS AND METHODS

摘要

An instrument for correction of spinal deformities includes an inner member with a proximal portion configured to receive a corrective force and a distal coupling portion configured to transfer the corrective force to a spinal implant in a vertebra. A slot extends transversely through the coupling portion and is configured to guide a fixation rod into the spinal implant. A threaded sleeve includes an external thread and a thru-bore that slides relative to the proximal portion. An outer member couples with the proximal portion and threadably engages the external thread to apply a reduction force as the outer member rotates relative to the inner member. A reduction blade includes a proximal interlocking portion that removably couples with the threaded sleeve and a distal rod engagement feature configured to engage the fixation rod and transfer the reduction force to reduce the fixation rod into the spinal implant.

主权项

1. An instrument for correction of spinal deformities and rod reduction, comprising:
an inner member including a proximal portion configured to receive a corrective force and a distal coupling portion configured to transfer the corrective force to a spinal implant in a vertebra; a slot extending transversely through the coupling portion and configured to guide a fixation rod into the spinal implant; a threaded sleeve including an external thread and a thru-bore that slides relative to the proximal portion of the inner member; an outer member coupled with the proximal portion of the inner member and engaged with the external thread to apply a reduction force to the threaded sleeve as the outer member rotates relative to the inner member; and a reduction blade including a proximal interlocking portion that removably couples with the threaded sleeve and a distal rod engagement feature configured to engage the fixation rod and transfer the reduction force to reduce the fixation rod into the spinal implant.