Packaged, partially hydrated prosthetic disc nucleus
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United States of America Patent
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Mar 18, 2003
Grant Date -
N/A
app pub date -
Jun 5, 2000
filing date -
Jun 5, 2000
priority date (Note) -
Expired
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Abstract
A packaged prosthetic disc nucleus including a prosthetic disc nucleus and a retainer. The prosthetic disc nucleus includes a hydrogel core formed to hydrate from a dehydrated state. Further, the prosthetic disc nucleus is configured to such that following implantation into a nucleus cavity, the hydrogel core hydrates to a final hydrated state. The retainer selectively contains the prosthetic disc nucleus. Further, upon contact with a hydration liquid, the retainer is configured to allow the hydrogel core to hydrate from the dehydrated state while preventing the hydrogel core from hydrating to the final hydrated state. Thus, the prosthetic disc nucleus is constrained by the retainer in a partially hydrated state. In one preferred embodiment, the combination prosthetic disc nucleus/retainer is sealed within an outer enclosure, such as a pouch, that also contains a hydration liquid for hydrating the hydrogel core. During use, the prosthetic disc nucleus is removed from the retainer and implanted in the partially hydrated state.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- RAYMEDICA, LLC
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bauer, Laura J | Edina, MN | 5 | 239 |
Norton, Britt K | Eden Prairie, MN | 10 | 1291 |
Sherman, Tara N | Cottage Grove, MN | 1 | 233 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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