公开(公告)号：EP1263354A1

公开(公告)日：2002-12-11

申请号：EP01920303.3

申请日：2001-03-09

申请人： Osteotech, Inc.,

发明人： ALFARO, Arthur, A. ,  SHIMP, Lawrence, A. ,  BOYLE, John, W. ,  GEREMAKIS, Perry ,  RUSSELL, James ,  SCARBOROUGH, Nelson, L.

IPC分类号： A61F2/44

CPC分类号： A61F2/446 ,  A61F2/28 ,  A61F2/442 ,  A61F2/4465 ,  A61F2/4611 ,  A61F2002/2817 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30059 ,  A61F2002/30115 ,  A61F2002/30125 ,  A61F2002/30131 ,  A61F2002/30153 ,  A61F2002/30405 ,  A61F2002/30795 ,  A61F2002/30797 ,  A61F2002/3082 ,  A61F2002/3085 ,  A61F2002/30874 ,  A61F2002/4475 ,  A61F2002/4638 ,  A61F2220/0025 ,  A61F2230/0006 ,  A61F2230/0008 ,  A61F2230/0013 ,  A61F2230/0019 ,  A61F2310/00017 ,  A61F2310/00023 ,  A61F2310/00179 ,  A61F2310/00359

摘要： There is provided a combined two-part intervertebral implant (10) configured to restore the spacing between adjacent vertebrae. The implant (10) generally includes a spacer ring (12) having upper and lower vertebral engaging surfaces and a bore for receipt of a locking element (14). The implant (10) further includes a locking element (14) which is engageable within the spacer ring (12) and has a diameter or height greater than the thickness of the spacer ring. In one embodiment, the spacer ring (12) may be formed as a C-shaped element (16). In an alternative embodiment, the spacer ring may be formed as an intact ring (42) having a side bore (44) for receipt of the locking element. One or both parts of the implant (10) may be partially or wholly surface demineralized to provide a flexible surface on implant. A method of using the spacer ring (12) and locking element (14) to secure the assembled implant between adjacent vertebrae is also disclosed.