Soft tissue repair system
A soft tissue repair system is provided for covering or filling openings in the annulus of an intervertebral disc. The soft tissue repair system uses a single plug or a combination of a first plug and a second plug. The second plug is a flowable plug such as an adhesive material or a material that hardens to a flexible plug material. Each plug is configured to close the opening in the annulus and can be positioned within the opening, over the opening at the exterior surface or over the opening at the interior surface. The plug can also be combined with a clamping mechanism that engages the annulus to secure the plug in the opening.
1. A soft tissue repair system for an intervertebral disc having an annulus and a nucleus pulposus, the system comprising:
a first flexible plug configured to conform to contours of the annulus and an opening in the annulus and to close the opening that passes through the annulus from an exterior surface of the annulus to an interior surface of the annulus by being positioned in at least one of within the opening, over the opening at the exterior surface and over the opening at the interior surface; and
a second plug separate from the first plug and configured to close the opening by being positioned in at least one of within the opening, over the opening at the exterior surface and over the opening at the interior surface, the second plug comprising a flowable plug material,
wherein the first flexible plug comprises an extension that extends into the opening between the exterior surface of the annulus and the interior surface of the annulus and a single central through hole that extends through the extension, the single central through hole configured to allow passage of the flowable plug material from the exterior surface to the interior surface and configured to be sealed by the flowable plug material, and
wherein a portion of the flowable plug material seals the outside of the opening proximal the exterior surface of the annulus and seals the single central through hole, wherein the portion of the flowable plug material that seals the outside of the opening is external to the extension of the first flexible plug,
wherein a portion of the flowable plug material is disposed inside the annulus adjacent the flexible plug such that the flowable plug material only partially fills the nucleus pulposus,
wherein a hollow tube is positioned within the single central through hole such that the hollow tube extends from a first proximal end of the flexible plug past a second distal end of the flexible plug, and is configured to allow the flowable plug material to flow through the single central through hole.
2. The soft tissue repair system of claim 1 , wherein the flowable plug material comprises an adhesive material.
3. The soft tissue repair system of claim 1 , wherein the flowable plug material comprises a material that hardens to a flexible plug material.
4. The soft tissue repair system of claim 1 , wherein the first plug is disposed within the opening and the second plug is disposed between portions of the first plug and walls within the opening.
5. The soft tissue repair system of claim 1 , wherein the first plug is disposed within the opening and the second plug covers the opening at the interior surface or exterior surface of the annulus.
6. The soft tissue repair system of claim 1 , wherein the first plug comprises a cover-type plug configured to cover the opening at the interior surface or exterior surface of the annulus.
7. The soft tissue repair system of claim 6 , wherein the second plug is disposed within the opening.
8. The soft tissue repair system of claim 1 , wherein: the first plug comprises: a head portion configured to be larger than the opening at the exterior surface of the annulus; a tapered body attached to and extending from the head, the tapered body narrowing as it extends from the head; and a central cylindrical shaft extending completely through the head and the tapered body; and the second plug is disposed in the central cylindrical shaft.
9. The soft tissue repair system of claim 1 , wherein the extension of the first flexible plug terminates at a free distal end.
10. The soft tissue repair system of claim 9 , wherein the extension has a diameter smaller than the opening in the annulus.
11. The soft tissue repair system of claim 10 , wherein the flowable plug material of the second plug fills the space between an outer surface of the extension and the opening in the annulus.
12. The soft tissue repair system of claim 1 , wherein the first flexible plug has a y-shaped configuration.