Pedicle screw

摘要

The present invention includes a pedicle screw made with a bone fastener and a rod coupling head, the rod coupling head comprising an upper rod coupling: the lower rod coupling having a lateral rod opening adapted to receive a permanent rod; an angled bore extends into the lateral rod opening; and a permanent rod fastener in the angled bore to engage a permanent rod in the lateral rod opening; and a upper rod coupling having an upper rod opening adapted to receive a temporary rod, wherein the upper rod opening is formed to receive a temporary rod fastener; wherein the upper rod coupling is detachable from the lower rod coupling at a transition and a temporary rod is temporarily affixed into the upper rod opening during a bone realignment and a permanent rod is positioned in the lateral rod opening and engaged by the permanent rod fastener upon final bone alignment.

主权项

1. A pedicle screw comprising:
a bone fastener and a rod coupling head, the rod coupling head comprising a lower rod coupling adjacent to an upper rod coupling having a unitary construction: the lower rod coupling comprising:
a lateral rod opening adapted to receive a permanent rod, wherein the lateral rod opening is on a side of the pedicle screw;an angled bore extends into the lateral rod opening; anda permanent rod fastener in the angled bore to engage a permanentrod in the lateral rod opening; and the upper rod coupling comprising:an upper rod opening adapted to receive a temporary rod in substantiallyparallel alignment with the permanent rod, whereinthe upper rod opening is formed to receive a temporary rod fastener along a central axis of the upper rod opening,wherein the upper rod coupling is detachable from the lower rod coupling at a transition in the unitary construction; and wherein a temporary rod is temporarily affixed into the upper rod opening prior to a permanent rod being positioned in the lateral rod opening and engaged by the permanent rod fastener, wherein the lateral rod opening and the upper rod opening do not face each other and wherein the central axis of the upper rod opening intersects the lateral rod opening.