Intervertebral disc herniation repair
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 repairing a herniated disc by displacing at least a portion of the herniated segment to within the pre-herniated borders of the disc and anchoring at least a portion of the displaced herniated segment to a site within the disc are also provided.
1. A method of restricting motion of a weakened segment of an anulus fibrosus of an intervertebral disc of a functional spine unit, the method comprising:
identifying a weakened segment of an anulus fibrosus, wherein the weakened segment contains a defect,
wherein the weakened segment comprises a herniated segment that protrudes beyond a pre-herniated border of the disc;
providing a bone anchor;
providing a biocompatible support member;
positioning the biocompatible support member to, within, or posterior to the weakened segment without resecting the herniated segment;
securing the bone anchor within a portion of a functional spine unit;
connecting the bone anchor and the biocompatible support member with a connection member;
applying tension between the bone anchor and the biocompatible support member along the connection member, wherein said tension is sufficient to cause the protruded herniated segment to return to a pre-herniated position, and wherein said tension maintains the pre-herniated position.
2. The method of claim 1 , further comprising closing the defect.
3. The method of claim 1 , comprising arranging the connection member so as to at least partially traverse a disc space.
4. The method of claim 1 , wherein the method is performed without the removal of any or all of the autologous nucleus pulposus.
5. The method of claim 1 , wherein the connection member comprises one or more of a suture, wire, woven tube, web, and band of material.
6. The method of claim 1 , wherein the support member is shaped like a bar, plate, bead, or cap.
7. The method of claim 1 , wherein said support member comprises one or more materials selected from the group consisting of: plastic and metal.
8. The method of claim 1 , wherein said support member comprises one or more materials selected from the group consisting of: resorbable material, polylactic acid and polyglycolic acid.
9. The method of claim 1 , further comprising securing a second anchor in a location within the functional spine unit and connecting said second anchor to said support member with a second connection member.
10. The method of claim 9 , further comprising tensioning said second connection member to restrict the movement of the weakened segment.