Prosthetic spinal discs
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United States of America Patent
Stats
-
Dec 18, 2007
Grant Date -
Jul 6, 2006
app pub date -
Dec 30, 2004
filing date -
Dec 30, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A prosthetic spinal disc uses a stiff spring or springs for resiliency between two plates that attach to adjacent vertebrae. When the disc has multiple springs, they may be adjacent, concentric or nested. Multiple springs may be spaced around the periphery of the plates. A foil metal bellows may surround the plates to prevent material from entering or exiting the space between the plates. Alternatively, the ends of the spring(s) may be machined with spikes to engage the vertebrae directly without plates.
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Family
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Cited Art Landscape
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