Antioxidant stabilized crosslinked ultra-high molecular weight polyethylene for medical device applications
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United States of America Patent
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Mar 27, 2018
Issued Date -
N/A
app pub date -
Dec 29, 2015
filing date -
Apr 10, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An antioxidant combined with UHMWPE prior to subjecting the UHMWPE to crosslinking irradiation. In one exemplary embodiment, the antioxidant is tocopherol. After the antioxidant is combined with the UHMWPE, the resulting blend may be formed into slabs, bar stock, and/or incorporated into a substrate, such as a metal, for example. The resulting product may then be subjected to crosslinking irradiation. In one exemplary embodiment, the UHMWPE blend is preheated prior to subjecting the same to crosslinking irradiation. Once irradiated, the UHMWPE blended product may be machined, packaged, and sterilized in accordance with conventional techniques.
First Claim
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International Classification(s)
- 2015 Application Filing Year
- C08J Class
- 2246 Applications Filed
- 1523 Patents Issued To-Date
- 67.81 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- C08J Class
- 40.10 % this patent is cited more than
- 7 Age
Maintenance Fees
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| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 27, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 27, 2029 |
