Intervertebral disk arthroplasty
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United States of America Patent
Stats
-
Nov 2, 1993
Issued Date -
N/A
app pub date -
Dec 14, 1992
filing date -
Jan 6, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A prosthetic disk having ball and socket members made of a material having expected durability to function properly for 40 years in a typical lumbar spine. The disk is shaped to provide movement in 6 degrees of freedom mimicking normal intervertebral movement, except compression. The arthroplasty device is non-compressible to maintain distraction of the facet joints posteriorly. Base plates with tabs can be fastened to the ball and socket members to ensure short-term and long-term fixation, although it is expected not to be necessary.
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Family
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