Implantable spinal fixation crosslink

摘要

A crosslink is provided for joining two spine rods. The crosslink includes an elongate tie rod and a pair of housings at each end of the tie rod. The housings are preferably identical and have independent fasteners including a spine rod fastener and a tie rod fastener for connecting each housing to one of the spine rods and fixation of the tie rod. The tie rod fasteners include a pair of hemisphere clamps residing within a chamber in the housing which grip the tie rod therebetween to fix the tie rod to the clamp when a set screw applies a clamping force on the hemisphere clamps. The tie rod fastener is adjustable, so that both translation of the tie rod relative to the housings and rotation about three mutually perpendicular axes can be accommodated for orienting of the housings relative to the tie rod precisely where desired.