| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a durable nucleus pulposus or spinal implants that are less resistant to deformation, and to provide devices and methods that anchor the implants so that the implants are more resistant to migration and/or expulsion through an opening in the annulus fibrosis. <P>SOLUTION: The spinal implant includes: (a) an elastic body having at least a part defined by the annulus fibrosis, sized for introduction into an intervertebral disk space, and including an upper surface and lower surface in contact with adjacent vertebral endplates; and (b) a flexible peripheral supporting band disposed circumferentially about the elastic body to reduce deformation of the elastic body, and not put around at least a portion of the upper surface and the lower surface of the elastic body. The implant includes the peripheral supporting band sized to fit within the intervertebral disk defined by the annulus fibrosis. <P>COPYRIGHT: (C)2007,JPO&INPIT |
