A surgical method of repair and reconstruction of the spinal disc wall, or annulus fibrosus, after surgical incision or pathologic rupture, through the insertion of a collapsible patch through an aperture into the subannular space and causing or allowing the patch to expand into an expanded configuration...http://www.google.com.au/patents/US6592625?utm_source=gb-gplus-sharePatent US6592625 - Spinal disc annulus reconstruction method and spinal disc annulus stent
