Polyaxial locking screw and coupling element assembly for use with rod fixation apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5586984
SERIAL NO

08502803

Stats

ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A polyaxial orthopedic device for use with rod implant apparatus includes a screw having a curvate head and a coupling element. The coupling element has a tapered lower portion including a slotted interior chamber in which the curvate head is initially polyaxially disposed. The coupling element further includes a recess for receiving the rod of the implant apparatus, and an exterior threading disposed on its upper portion which receives a locking nut. A locking ring is disposed about the lower portion of the coupling element, and provides an inward force on the outwardly tapered portion upon downward translation thereof, thereby causing the vertical slots to close, and crush locking the screw head within the interior chamber, thus eliminating the polyaxial nature of the screw-element coupling. In several embodiments a hollow cylindrical rod securing sleeve is provided which fits over the coupling element and locks the rod to the coupling element. In the other embodiments, the locking nut seats against the top of the rod, locking it in place.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
STRYKER TECHNOLOGIES CORPORATIONKALAMAZOO, MI29
SYNTHES USA, LLCWEST CHESTER, PA430

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Errico, Joseph P Hempstead, NY 291 17038
Errico, Thomas J Summit, NJ 96 12869
Ralph, James D Oakland, NJ 185 18245

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BIEDERMANN TECHNOLOGIES GMBH & CO. KG (1)
* 5443467 Bone screw 603 1994
 
Other [Check patent profile for assignment information] (2)
* 4946458 Pedicle screw 639 1989
* 5306275 Lumbar spine fixation apparatus and method 596 1992
 
STRYKER CORPORATION (1)
* 5176680 Device for the adjustable fixing of spinal osteosynthesis rods 494 1991
 
EBI, LLC (1)
* 4805602 Transpedicular screw and rod system 535 1986
 
CROSS MEDICAL PRODUCTS, LLC (1)
* 5360431 Transpedicular screw system and method of use 667 1992
 
SDGI HOLDINGS, INC. (1)
* 5261909 Variable angle screw for spinal implant system 251 1992
 
PSI (1)
* 5480401 Extra-discal inter-vertebral prosthesis for controlling the variations of the inter-vertebral distance by means of a double damper 355 1994
 
CORIN MEDICAL LIMITED (1)
* 5217497 Apparatus for use in the treatment of spinal disorders 342 1991
 
POPE, MALCOLM, PHD (1)
* 4987892 Spinal fixation device 219 1989
 
FUJITSU SEMICONDUCTOR LIMITED (1)
* 5153103 Resist composition and pattern formation process 14 1991
 
Prufer (1)
* 5207678 Pedicle screw and receiver member therefore 532 1992
 
SYNTHES USA, LLC (2)
* 5261912 Implant for an osteosynthesis device, in particular for spinal column correction 290 1991
* 5190543 Anchoring device 284 1991
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (102)
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8152810 Spinal fixation tool set and method 19 2004
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8845649 Spinal fixation tool set and method for rod reduction and fastener insertion 2 2009
8292892 Orthopedic implant rod reduction tool set and method 11 2009
8012177 Dynamic stabilization assembly with frusto-conical connection 13 2009
8366745 Dynamic stabilization assembly having pre-compressed spacers with differential displacements 1 2009
8636777 Polyaxial bone screw with discontinuous helically wound capture connection 0 2009
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8100915 Orthopedic implant rod reduction tool set and method 30 2009
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8613760 Dynamic stabilization connecting member with slitted core and outer sleeve 2 2011
8377067 Orthopedic implant rod reduction tool set and method 19 2012
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8900272 Dynamic fixation assemblies with inner core and outer coil-like member 0 2013
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8926670 Polyaxial bone screw assembly 2 2013
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8814913 Helical guide and advancement flange with break-off extensions 4 2013
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9662143 Dynamic fixation assemblies with inner core and outer coil-like member 0 2014
9439683 Dynamic stabilization member with molded connection 1 2015
9636151 Orthopedic implant rod reduction tool set and method 0 2015
9662151 Orthopedic implant rod reduction tool set and method 0 2015
9788866 Polyaxial bone screw with shank articulation pressure insert and method 0 2017
 
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9393047 Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock 1 2012
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8911479 Multi-start closures for open implants 3 2013
9504496 Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert 1 2013
8926672 Splay control closure for open bone anchor 0 2013
8911478 Splay control closure for open bone anchor 0 2013
8852239 Sagittal angle screw with integral shank and receiver 1 2014
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9770265 Splay control closure for open bone anchor 0 2014
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9522021 Polyaxial bone anchor with retainer with notch for mono-axial motion 0 2015
9597119 Polyaxial bone anchor with polymer sleeve 1 2015
9717534 Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock 0 2015
 
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8512380 Posterior fixation system 0 2010
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9615867 Multi-rod bone attachment member 0 2013
 
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8777997 Method for securing vertebrae 2 2012
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8636782 Receiving part for receiving a rod for coupling the rod to a bone anchoring element and bone anchoring device with such a receiving part 5 2009
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9023086 Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part 0 2013
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9566093 Bone screw 0 2014
9289246 Bone anchoring device 1 2014
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9433440 Polyaxial screw assembly 0 2010
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CARBOFIX ORTHOPEDICS LTD. (1)
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SPINESAVE AG (1)
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SPINE WAVE, INC. (8)
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8475500 Multi-axial spinal fixation system 1 2007
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8414622 Multi-axial spinal fixation system 4 2012
9226777 Multi-axial spinal fixation system 0 2013
9101402 Multi-axial spinal fixation system 0 2013
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* Cited By Examiner