Intervertebral nucleus and annulus implants and method of use thereof

摘要

The invention encompasses devices and methods for treating one or more damaged, diseased, or traumatized intervertebral discs to reduce or eliminate associated back pain. Specifically, the invention encompasses intervertebral nucleus and annulus implants that are resistant to migration in and/or expulsion from an intervertebral disc space. The invention further encompasses kits including the implantable devices of the invention and associated delivery tools to treat annular and nuclear tissue.

主权项

1. A nucleus pulposus containment shell comprising:
a. an outer shell comprised of a biocompatible material defining a central fillable cavity having a central cavity and one or more envelope cavities completely surrounding an outer perimeter of the central cavity; b. an inner surface including a load bearing polymeric or elastomeric material therein, wherein the load bearing material comprises a plurality of beads in a fluid or gel suspension; c. a unidirectional valve to allow filling of the inner surface; and d. a sealing crimp to prevent leakage of the load bearing polymeric or elastomeric material filling the inner surface, wherein the outer shell has an cylindrical-like shape, wherein a top surface and/or a bottom surface of the outer shell are textured to provide anchorage with one or more vertebral endplates.