Anchored anulus method
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 closing a defect in an anulus fibrosus of an intervertebral disc, comprising:
inserting a barrier through an opening into a disc;
positioning said baiter relative to said defect, wherein said barrier obstructs passage of material from the interior of said disc into said defect;
inserting a straight fixation delivery apparatus operable to deliver a fixation means into said anulus on a first side of said defect,
passing a first fixation means through said anulus and into said barrier;
inserting said straight fixation delivery apparatus into said anulus on a second side of said defect; and
passing a second fixation means through said anulus and into said barrier, thereby securing said barrier in two different locations to said anulus.
2. The method of claim 1 , wherein said straight fixation delivery apparatus comprises a hollow needle.
3. The method of claim 1 , wherein said straight fixation delivery apparatus comprises a cannulated tube.
4. The method of claim 1 , wherein said fixation means comprises a device selected from the group consisting of one or more of the following: sutures, staples, darts, and glues.
5. The method of claim 1 , wherein said barrier is larger in area than the defect.
6. The method of claim 1 , wherein said barrier comprises one or more expandable regions.
7. The method of claim 1 , wherein said barrier is expanded from a compressed state to an expanded state after insertion to the interior of the disc.
8. The method of claim 1 , wherein said first side of the defect and said second side of the defect are located on opposite sides of the posterior wall.