Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Reexamination Certificate
2005-05-17
2005-05-17
Philogene, Pedro (Department: 3732)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
C623S017150, C623S017120, C606S090000, C606S099000
Reexamination Certificate
active
06893464
ABSTRACT:
The spinal fusion cage of the invention comprises two opposing end plates, and three opposing collapsible legs. The two opposing end plates and three opposing collapsible legs are adapted to be configured into an expanded cage from a collapsed configuration. The expanded cage assumes a predetermined rigid shape and volume for disposition between two adjacent vertebrae. The collapsed configuration of the cage is adapted for posterior insertion into the disk space. The apparatus further comprises locking means for at least temporarily locking the legs and maintaining the cage in an expanded configuration. One of the legs is medially disposed on a first side of the cage and the other two are laterally disposed with respect to the end plates on a second side. The three legs have differing lengths so that the cage assumes a wedge-shaped envelope in the expanded configuration. The wedge-shaped envelope reestablishes a predetermined lordosis between fused vertebrae. The invention includes an inserter comprised of a tubular member and holding clamp disposed on the distal end of the tubular member. The holding clamp holds the cage in the collapsed configuration for insertion into a confined surgical theater. The cage is then reconfigured to the expanded configuration using the inserter. Further activation of the inserter causes the cage to be temporarily locked into the expanded configuration.
REFERENCES:
patent: 5782832 (1998-07-01), Larsen et al.
patent: 5951564 (1999-09-01), Schroder et al.
patent: 6019793 (2000-02-01), Perren et al.
patent: 6126689 (2000-10-01), Brett
patent: 6183517 (2001-02-01), Suddaby
patent: 6375682 (2002-04-01), Fleischmann et al.
patent: 6409766 (2002-06-01), Brett
patent: 6443989 (2002-09-01), Jackson
patent: 6554864 (2003-04-01), Ralph et al.
Dawes Daniel L.
Myers Dawes Andras & Sherman LLP
Philogene Pedro
The Regents of the University of California
LandOfFree
Method and apparatus for providing an expandable spinal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for providing an expandable spinal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for providing an expandable spinal... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3446429