Method and relaxable distracters for in-situ formation of intervertebral disc prosthesis
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United States of America Patent
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Issued Date -
May 15, 2008
app pub date -
Nov 10, 2006
filing date -
Nov 10, 2006
priority date (Note) -
Abandoned
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Abstract
A method and a distracter for replacing a removed, intervertebral disc with a prosthesis. An inter-body distracter is inserted within the intervertebral space between adjacent vertebrae, the vertebrae are distracted and are supported by the distracter. A fluid, curable polymer is injected into the intervertebral space and around the distracter and then the polymer is cured to a semi-rigid, pliable, elastically deformable state. The distracter is then disabled from supporting compressive forces applied by the vertebrae and remains in place. The preferred distracter is a scissors jack having intermediate bearings joined by links to support feet. One of the bearings has a threaded lateral bore and the second bearing has a lateral bore. A rod extends through the bores and has a threaded portion extending from a first end of the rod and threadedly engaging the threaded bearing. The inside diameter of the second bore is greater than the outside diameter of the threaded portion of the rod so the rod is axially slidable through the second bore. A thrust bearing is fixed on the threaded rod and positioned laterally outwardly of the second bearing for forcing the second bearing laterally toward the first bearing upon rotation of the rod in one direction and for permitting the rod to be withdrawn from the bearing by rotating the rod in the opposite direction and disengaging it from the first bearing. Alternative distracters are also disclosed.
First Claim
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- 15 United States
- 10 France
- 8 Japan
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
SYBERSPINE LIMITED | 4241 CONKLIN COURT NEW ALBANY OH 43054 |
International Classification(s)
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Meyer, Thomas L | New Albany, OH | 1 | 178 |
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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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