Spinal repair device

A spinal repair device including at least:

• (a) a head having a surface, and
• (b) a body having a major axis;
• wherein the body is connected to the surface and the head comprises a deformable nanocomposite hydrogel, the hydrogel comprising polymers of one or more water soluble monomers;
• and wherein:
• (A) the spinal repair device is for repair of a defect in an annulus fibrosus of an intervertebral disc, the intervertebral disc having an annulus fibrosus and a nucleus pulposus, wherein the body is arranged to be positioned within the defect, and the head is arranged to be positioned within the nucleus pulposus such that its surface is adjacent to the surface of the annulus fibrosus and such that the head extends beyond the periphery of the defect;
• or
• (B) the body is connected to the surface and configured such that its major axis is approximately perpendicular to the surface, the major axis defining a plane perpendicular thereto, the projection of the head on the plane extending beyond the projection of the body on the plane.