Spinal fixation tool set and method
A tool set for implanting a rod in a human spine in conjunction with bone screws includes a pair of end guide tools that receive opposite ends of the rod in channels and under manipulation by a surgeon facilitate transport of the rod toward the bone screws attached to the guide tools. Each end guide tool includes a laterally extending, rigid, rod holding structure located near a bottom surface thereof. Intermediate guide tools having pass-through slots are utilized to guide the rod to the bone screws at intermediate locations.
1. A guide tool assembly for implanting a spinal rod in a bone anchor, the tool assembly comprising:
a) a first tool having an overall length and a lower end snapped onto the bone anchor, said first tool having a central opening extending the entire overall length, and a channel opening radially outward along a lower length of said first tool, so as to form a pass-through passageway for receiving the rod therein; and
b) a second tool surrounding the first tool and having an overall length being one of equal to and longer than the overall length of the first tool so as to push the rod down into the bone anchor.
2. A guide tool assembly for use with a spinal implant bone anchor and an associated rod, the guide tool assembly comprising:
a) an inner elongate body having an overall length and a longitudinal axis with a central opening along the overall length of the inner elongate body, the inner elongate body having an outer surface and a channel with a lateral opening extending through the outer surface and along a portion of the length of the inner elongate body upwardly from a bottom of the body, the channel and the channel opening being sized and shaped for receiving the rod;
b) an opposed spinal implant bone anchor engaging structure near the bottom of the body engaging a bone anchor head; and
c) an outer elongate rod pushing member having an overall length being one of substantially equal to and longer than the overall length of the inner elongate body; wherein
d) the guide tool assembly configured to insert the bone anchor, to manipulate the head of the bone anchor, to insert the rod, to guide the rod to the bone anchor head, and to reduce the rod down into the head by pushing the rod pushing member down on the rod; and wherein
e) the assembly configured to be removable from the bone anchor after the rod has been secured to the head of the bone anchor.
3. The guide tool assembly of claim 2 , wherein
a) the opposed spinal implant bone anchor engaging structure is flexible.
4. The guide tool assembly of claim 2 , including
a) a screw driver to insert the bone anchor.
5. A guide tool assembly for use with a spinal implant bone screw and an associated rod, the guide tool assembly comprising:
a) an inner elongate body having a central opening along an overall length thereof, the body having an outer surface and a channel with a lateral opening extending through the outer surface and along at least a portion of the overall length of the body upwardly from a bottom of the body, the channel and the channel opening being sized and shaped for receiving the rod;
b) an opposed spinal implant engaging structure near the bottom of the body and configured to flexibly engage a head of the bone screw; and
c) an outer elongate member having an overall length being one of substantially equal to and longer than the overall length of the inner elongate body and translationally disposed over at least a portion of the flexible engaging structure and configured to cooperate with the guide tool assembly to insert the rod into the bone screw head.
6. The guide tool assembly of claim 5 , wherein
a) at least a portion of the inner elongate body outer surface is threaded.