System for implanting a rod implant along a spine of a patient

Patent metadata

Field	Value
Publication number	US-9265535-B2
Application number	US-201414553327-A
Country	US
Kind code	B2
Filing date	Nov 25, 2014
Priority date	Feb 27, 2004
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

A tool set for implanting a rod in a human spine in conjunction with bone screws. The tool set 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. Intermediate guide tools having guiding pass through slots are utilized to guide intermediate locations along the rod toward associated bone screws. An attachment structure operably connects the guide tools to the bone screws. The guide tools each include a lower guide and advancement structure to allow a closure top with mating structure to be rotated and driven downward against the rod and to cooperate with similar structure in the bone screw to seat and lock the rod therein. A method utilizing the tool set allows a surgeon to percutaneously implant the rod in the patient.

First claim

The invention claimed is:

1. A surgical system for implanting an implantable rod adjacent a bone of a spine of a patient, the surgical system comprising:
a) an implantable anchor comprising:
i) a head comprising a first attachment structure and a rod receiving channel; and
ii) a distal portion distally extending from the head and configured to be received in an anchoring fashion in the bone;

b) an elongated guide tool comprising:
i) a proximal end;
ii) a distal end opposite the proximal end;
iii) a second attachment structure near the distal end and releasably attachable to the first attachment structure so as to releasably attach the head to the elongated guide tool near the distal end; and
iv) a first thread proximal the second attachment structure; and

c) a body comprising a second thread configured to threadably engage with the first thread in reducing the implantable rod from the elongated guide tool into the rod receiving channel.

2. The surgical system of claim 1 , wherein the implantable anchor comprises a threaded bone screw.

3. The surgical system of claim 2 , wherein the threaded bone screw comprises a polyaxial bone screw.

4. The surgical system of claim 1 , wherein the distal portion comprises a threaded shank.

5. The surgical system of claim 1 , wherein the second attachment structure is received in the first attachment structure.

6. The surgical system of claim 1 , wherein the first attachment structure comprises a recess defined in a cylindrical outer surface of the head.

7. The surgical system of claim 6 , wherein the second attachment structure comprises a projection that is received in the recess.

8. The surgical system of claim 7 , wherein the distal end of the elongated guide tool is configured to pass distally over the head of the implantable anchor to releasably attach the head to the elongated guide tool, the projection biasing radially inward to be received in the recess as the second attachment structure releasably attaches with the first attachment structure.

9. The surgical system of claim 1 , wherein the elongated guide tool further comprises:
a) a wall;
b) a channel radially inward of the wall, an interior surface of the wall defining the channel; and
c) an opening through the wall to the channel, the opening extending longitudinally along the elongated guide tool from the distal end towards the proximal end.

10. The surgical system of claim 9 , wherein the second attachment structure projects radially inward from the wall.

11. The surgical system of claim 9 , wherein the opening extends from the distal end to the proximal end.

12. The surgical system of claim 9 , wherein the opening extends a full length of the elongated guide tool.

13. The surgical system of claim 1 , wherein the distal end of the elongated guide tool comprises first and second spaced-apart members, the second attachment structure is supported on the first spaced-apart member, and the distal end of the elongated guide tool is configured to pass distally over the head of the implantable anchor to releasably attach the head to the elongated guide tool.

14. The surgical system of claim 13 , wherein the second attachment structure points radially inward and the first spaced-apart member biases radially inward to force the second attachment structure into the first attachment structure as the distal end of the elongated guide tool is distally passed over the head of the implantable anchor.

15. The surgical system of claim 14 , wherein the first and second spaced-apart members are forced apart from each other as the distal end of the elongated guide tool is distally passed over the head of the implantable anchor.

16. The surgical system of claim 1 , wherein the elongated guide tool further comprises a wall and a channel radially inward of the wall and an interior surface of the wall defines the channel, the first thread being located at the interior surface of the wall.

17. The surgical system of claim 1 , wherein the head of the implantable anchor further comprises a third thread, the third thread being located in the rod receiving channel, and the first thread is proximal the third thread when the head is releasably attached to the elongated guide tool.

18. The surgical system of claim 1 , wherein the body comprises a threaded closure top.

19. The surgical system of claim 1 , wherein the first thread is near the distal end of the elongated guide tool.

Assignees

• Jackson Roger P

Inventors

• Jackson Roger P

Classifications

• A61B17/7089

  wherein insertion is along an arcuate path · CPC title

• A61B17/7076

  for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation · CPC title

• A61B17/7082

  for driving, i.e. rotating, screws or screw parts specially adapted for spinal fixation, e.g. for driving polyaxial or tulip-headed screws · CPC title

• A61B17/7091

  for applying, tightening or removing longitudinal element-to-bone anchor locking elements, e.g. caps, set screws, nuts or wedges · CPC title

• A61B17/7032

  Screws or hooks with U-shaped head or back through which longitudinal rods pass · CPC title