Side mounted polyaxial pedicle screw
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United States of America Patent
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May 16, 2000
Issued Date -
N/A
app pub date -
Apr 13, 1998
filing date -
Dec 23, 1996
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Abstract
A polyaxial orthopedic device for use with rod implant apparatus which includes a screw having a head, a tubular body having holes in the top, side and bottom therof, and a rod coupling element. The head of the screw is disposed in the body with the shaft of the screw extending out the bottom hole, such that the body and the screw may initially rotate relative to one another. The rod coupling element has a ball shaped end which seats in the body with the remainder of the rod coupling element extending out of the side hole of the body, such that the rod coupling element and the body are initially polyaxially coupled relative to one another. The ball end of the rod coupling element is disposed on top of the head of the screw. A set screw is provided in the top of the body, the tightening of which causes the ball, head, and body to be crush locked together, thereby preventing further relative motion.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- ZIMMER SPINE, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Errico, Joseph P | Far Hills, NJ | 378 | 29274 |
Errico, Thomas J | Summit, NJ | 107 | 18718 |
Ralph, James D | Oakland, NJ | 185 | 27697 |
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Maintenance Fees
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 |
---|---|---|---|
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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