US Patent No: 8,048,124 - Analytics, PDF, Full Text and PAIR Access

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Spinal screw assembly and screw insertion tool

ALSO PUBLISHED AS: 20100063552
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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A bone screw assembly includes a tulip-shaped seat, a bone fixation device, a ring-shaped washer, a rod and a cap. The tulip-shaped seat comprises a through opening dimensioned to receive the bone fixation device and a horizontal channel dimensioned to receive the rod. The washer is placed into the seat on top of the bone fixation device head and comprises first and second side tabs and a first pair of upward extending projections separated by a first gap and a second pair of upward extending projections separated by a second gap. The side tabs interface with a groove formed in the bottom portion of the seat. The rod is placed within the channel and positioned within a groove formed on the top surface of the washer. The cap includes first and second projections extending downward from its bottom surface and each of the first and second downward projections comprises first and second sidewise extending ridges. The first ridges of the first and second projections are aligned and placed within the first and second gaps of the washer, respectively, and interface with a first groove formed on the side portion of the seat and the second ridges interface with a second groove on the side portion of the seat when the cap is rotate.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SPINEFRONTIER, INCBEVERLY, MA20

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Christopher Beverly, US 21 64
Chin, Kingsley R Riviera Beach, US 23 106
Corrao, Ernie Bethel, US 19 261
Santangelo, Stephen Wallington, US 11 254
Saunders, Todd Boston, US 3 7

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
2007/0032,162 Spinal fixation tool set and method 18 2006
 
ZIMMER SPINE, INC. (2)
2008/0275,456 INSTALLATION SYSTEMS FOR SPINAL STABILIZATION SYSTEM AND RELATED METHODS 41 2007
2009/0005,787 DEVICE AND SYSTEM FOR IMPLANTING POLYAXIAL BONE FASTENERS 26 2007
 
TRAIBER, S.A. (1)
2007/0288,004 Vertebral fixation device and tool for assembling the device 67 2006
 
DEPUY SPINE SARL (1)
7,125,426 Locking cap assembly for spinal fixation instrumentation 159 2003
 
ZIMMER GMBH (1)
6,547,789 Holding apparatus for the spinal column 99 2000
 
DEPUY ACROMED, INC. (1)
7,081,117 Locking cap assembly for spinal fixation instrumentation 147 2004
 
STRYKER SPINE (1)
2008/0221,583 Polyaxial screwdriver for a pedicle screw system 10 2008
 
SYNTHES USA, LLC (1)
6,077,262 Posterior spinal implant 393 1997
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BIEDERMANN TECHNOLOGIES GMBH & CO. KG (1)
* 2011/0152,949 BONE ANCHORING DEVICE 11 2010
 
Other [Check patent profile for assignment information] (2)
8,834,541 Bone fixation assembly 0 2012
* 8,852,239 Sagittal angle screw with integral shank and receiver 0 2014
 
STRYKER TRAUMA SA (1)
9,101,426 Cable plug 0 2012
 
JACKSON, ROGER P. (1)
8,911,479 Multi-start closures for open implants 0 2013
 
AESCULAP IMPLANT SYSTEMS, LLC (1)
* 2013/0066,380 TWO STEP LOCKING SCREW ASSEMBLY 0 2012
 
WARSAW ORTHOPEDIC, INC. (2)
8,323,286 Systems and methods for minimally invasive surgical procedures 2 2010
9,060,817 Systems and methods for minimally invasive surgical procedures FO systems 0 2012
* Cited By Examiner

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 May 1, 2015
7.5 Year Payment $3600.00 $1800.00 $900.00 May 1, 2019
11.5 Year Payment $7400.00 $3700.00 $1850.00 May 1, 2023
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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