Implantable articles with as-cast macrotextured surface regions and method of manufacturing the same
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United States of America Patent
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Nov 18, 1997
Grant Date -
N/A
app pub date -
Jun 1, 1995
filing date -
Feb 18, 1994
priority date (Note) -
Expired
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Abstract
An implantable article having on at least a portion of its exterior surface an integral, as-cast macrotextured surface with macropores having undercut edge profiles. A complex macrotextured surface is provided by forming a casting mold so that the mold has complementary macrotextured surface features formed by three-dimensional printing techniques, and casting a molten metal within or in contact with the casting mold to form the implantable article. In a hybrid process, one or more printed surface mold plates are attached by hand, or in a wax molding process, to a simpler wax preform, and an investment is made in which the plates are incorporated into the investment mold. A casting is then made, with each preform yielding one cast article, and the incorporated plate forming the desired surface macrotexture on a region of the east article. Pore size, porosity and pore shape may be varied across the surface, or varied with depth, to independently enhance different mechanical and physiological factors at the bone-prosthesis interface.
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Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- JOHNSON & JOHNSON PROFESSIONAL, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Caldarise, Salvatore | Hanson, MA | 19 | 1335 |
Flynn, Timothy M | Norton, MA | 10 | 642 |
LaSalle, David L | Woonsocket, RI | 10 | 816 |
Manginelli, Richard P | Milton, MA | 6 | 387 |
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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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