Artificial disc and joint replacements with modular cushioning components
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United States of America Patent
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Issued Date -
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app pub date -
Jun 12, 2006
filing date -
Oct 8, 1999
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An artificial joint or disc replacement (ADR) broadly includes a pair of opposing endplate components, each attached to one of the upper and lower vertebrae, a cushioning component disposed between the endplate components, and a mechanism for coupling the cushioning component to one or both of the endplates. In the preferred embodiment, the cushioning component takes the form of a tire-like outer structure attached to an inner hub. A filler material is also preferably contained within the cushioning component. The filler material may be a gas, liquid, foam, or gel, including a hydrogel. One or both of the endplate components may include a modified surface to increase adherence to respective opposing bone surfaces.
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