Spinal prosthesis and facet joint prosthesis
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
N/A
app pub date -
Aug 12, 2005
filing date -
Oct 15, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A lumbar disc prosthesis is provided including a pair of disc members. The first member of the disc pair has a vertebral disc contact surface and a recessed portion on an opposing surface thereof. The second member of the disc pair has a vertebral disc contact surface and a protruding portion on an opposing surface thereof. The protruding portion of the second member engages with the recessed portion of the first member in use. Each of the first and second disc members are provided with at least three sections; a middle section and two end sections. The recessed and protruding portions are provided in the middle section of the respective disc members and each of the two end sections have a narrowing taper towards the ends of the disc members. The facet joint prosthesis includes a first member for attachment to a first posterior lumbar disc in use and a second member for attachment to a second posterior lumbar disc in use. At least a part of the first member is telescopically mounted in at least a part of the second member in use.
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