Intervertebral prosthetic disc with shock absorption
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United States of America Patent
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Dec 27, 2011
Grant Date -
Aug 10, 2006
app pub date -
Feb 4, 2005
filing date -
Feb 4, 2005
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A prosthetic disc for insertion between adjacent vertebrae includes upper and lower plates and a core having upper and lower curved surfaces disposed between the plates. At least one of the plates and/or the core includes a resilient material for absorbing shock or other forces applied by vertebrae. Optionally, resilient support members may be disposed within the resilient material to connect two portions of a plate or the core. Such support members may be springs, cylinders, wires or other resilient structures. The resilient material is held within the core or plate(s) via a surrounding retaining structure, such as a membrane. The resilient material disposed in one or more components of the prosthetic disc provides for shock absorption.
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