发明名称 |
Expandable implant for inter-vertebral stabilization, and a method of stabilizing vertebrae |
摘要 |
An expandable intervertebral implant for stabilizing adjacent vertebrae includes first and second opposed and operatively connected shells. Each one of the shells has a plurality of engaging members that are interdigitated with a corresponding plurality of engaging members of another of the shells. The implant also includes at least one extrusion opening and a cavity for containing osteogenic material. As one shell is moved relative to the other shell with a threaded actuator operatively connecting the shells, a volume of the cavity decreases and osteogenic material is extruded through the extrusion opening. A cross section of the implant at one or both ends thereof has a curvalinear shoulder for improved support of the vertebrae during bony growth and fusion of the vertebrae.
|
申请公布号 |
US6520991(B2) |
申请公布日期 |
2003.02.18 |
申请号 |
US20010827916 |
申请日期 |
2001.04.09 |
申请人 |
|
发明人 |
|
分类号 |
A61F2/00;A61F2/02;A61F2/28;A61F2/30;A61F2/44;A61F2/46;(IPC1-7):A61F2/44 |
主分类号 |
A61F2/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|