Method of anchoring an implant in an intervertebral disc
Methods of securing an implant within an intervertebral disc are provided. In some embodiments, systems for minimally invasive disc augmentation include an anulus augmentation component and a nucleus augmentation component. Both are suited for minimally invasive deployment. The nucleus augmentation component restores disc height and/or replaces missing nucleus pulposus. The anulus augmentation component shields weakened regions of the anulus fibrosis and/or resists escape of natural nucleus pulposus and/or the nucleus augmentation component. Methods and deployment devices are also disclosed. Methods of closing a defect in an anulus fibrosus of an intervertebral disc using a barrier are also provided.
1. A method of securing an implant within an intervertebral disc comprising the steps of:
providing a biocompatible support member adapted for implantation within the intervertebral disc, wherein said annulus comprises a defect; wherein the defect is bordered by an outermost layer of the annulus and an innermost layer of the the annulus;
providing at least one bone anchor;
implanting the biocompatible support member entirely beyond the defect and positioning said support member entirely against the innermost lamella of the annulus to close said defect;
positioning said at least one bone anchor in the defect;
anchoring the biocompatible support member with said at least one bone anchor to at least one of an upper or lower vertebra along an endplate.
2. The method of claim 1 , wherein the defect comprises a puncture.
3. The method of claim 1 , wherein the defect comprises a tear.
4. The method of claim 1 , further comprising inserting the biocompatible support member through said defect.
5. The method of claim 1 , wherein the biocompatible support member is placed between an anulus and a nucleus of said intervertebral disc.
6. The method of claim 1 , wherein the biocompatible support member comprises a barrier.
7. The method of claim 1 , wherein the biocompatible support member comprises a concave mesh.
8. The method of claim 1 , wherein the biocompatible support member comprises a concave mesh, wherein the concavity of said concave mesh is facing the nucleus.
9. The method of claim 1 , further comprising providing a connection member.
10. The method of claim 1 , further comprising:
providing a connection member;
coupling said connection member to said anchor; and
coupling said connection member to said support member.
11. The method of claim 1 , wherein said at least one bone anchor comprises a dart.
12. The method of claim 1 , wherein the biocompatible support member comprises a barrier, wherein said barrier comprises an enlarging means and a sealing means.
13. The method of claim 1 , wherein the enlarging means comprises an integral fixation region that facilitates anchoring.
14. The method of claim 1 , further comprising providing a bone anchor deployment tool.
15. The method of claim 14 , wherein the step of anchoring the biocompatible support member comprises deploying said at least one bone anchor to at least one of the upper or lower vertebra at an angle less than about 180° relative to said bone anchor deployment tool.
16. The method of claim 1 , further comprising securing the biocompatible support member to tissue with a device selected from the group consisting of one or more of the following: sutures, soft tissue anchors, and tissue adhesives.
17. The method of claim 1 , wherein the step of implanting the biocompatible support member comprises implanting the biocompatible support member to reduce the flow of material from the nucleus into the defect.
18. The method of claim 1 , wherein the defect is located in a herniated segment.
19. The method of claim 1 , wherein the biocompatible support member spans the defect in more than one direction.
20. The method of claim 1 , wherein the biocompatible support member is anchored to at least one of the upper or lower vertebra along an endplate, wherein the upper or lower endplate is located adjacent to said defect.