Sacral screw assembly and method
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United States of America Patent
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May 20, 2003
Grant Date -
N/A
app pub date -
Mar 22, 2000
filing date -
Mar 22, 2000
priority date (Note) -
Expired
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Abstract
A sacral screw assembly may provide a connection to a sacrum for a spinal fixation assembly. The sacral screw assembly may include a fixation component, connector, spinal rod, and a fastener. The connector and fixation component are configured to interconnect so that the connector inhibits translational and rotational motion of a spinal rod that is positioned within an opening of the connector. The connector may include a flared arm tip. The flared arm tip may fit within a groove of the fixation component to help position the connector within a cavity of the fixation component. The flared arm tip may also inhibit passage of the connector through the top of the cavity. The fixation component may have a threaded shank. The threaded shank may have a coarse pitch section located near a head of the fixation component, and a fine pitch section located near an end of the shank. When the fixation component is inserted into a sacrum, the coarse pitch section of threading and the fine pitch section of threading may inhibit backout of the fixation component from the sacrum.
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 |
---|---|---|---|
Rashbaum, Ralph F | Dallas, TX | 9 | 2604 |
Wagner, Erik J | Austin, TX | 86 | 22095 |
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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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