公开(公告)号：EP1755501A1

公开(公告)日：2007-02-28

申请号：EP05753829.0

申请日：2005-05-24

申请人： Warsaw Orthopedic, Inc.

发明人： EISERMANN, Lukas, G. ,  RAY, Eddie, F. III

IPC分类号： A61F2/44

CPC分类号： A61F2/442 ,  A61F2/28 ,  A61F2/30756 ,  A61F2/4405 ,  A61F2/4425 ,  A61F2/4611 ,  A61F2002/30069 ,  A61F2002/30092 ,  A61F2002/30224 ,  A61F2002/3037 ,  A61F2002/30405 ,  A61F2002/30548 ,  A61F2002/30581 ,  A61F2002/30601 ,  A61F2002/30668 ,  A61F2002/30675 ,  A61F2002/30677 ,  A61F2002/3085 ,  A61F2002/444 ,  A61F2002/448 ,  A61F2002/482 ,  A61F2002/484 ,  A61F2210/0014 ,  A61F2220/0025 ,  A61F2220/0033 ,  A61F2230/0069 ,  A61F2250/0001 ,  A61F2250/0013 ,  A61F2310/00011 ,  A61F2310/00161 ,  A61F2310/00179 ,  A61F2310/00359 ,  A61F2310/00365 ,  A61F2310/00796

摘要： The present disclosure provides improved prosthetic facet joints (20) and a nucleus supplement device (50) for a spinal disc without violating its annulus fibrosus. In one example, a prosthetic facet joint includes: a tip (34) adapted for mating against a superior articular process of an inferior vertebra, and the tip acts as at least a spacer between the superior articular process and an inferior articular process of a superior vertebra; and an body (38) for mating against a hole in the superior vertebra, and the body comprises a surface that is uneven along its entire length. The prosthetic facet joint may comprise a cavity (36) used for delivering a substance to the articular capsule or joint space. In another example, a nucleus supplement device (50) is provided, having the same structure, but larger body. The nucleus supplement device is to be inserted into a vertebral body (V3) so that the tip penetrates the endplate and the substance (72) in the cavity is used to re-pressurize the nucleus pulposus of the spinal disc (74).