US Patent No: 7,476,228

Number of patents in Portfolio can not be more than 2000

Distraction screw for skeletal surgery and method of use

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ALSO PUBLISHED AS: 20040133207
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

An improved distraction bone screw and a method for its use are described. The distraction screw is comprised of an implantable distal segment and a detachably secured proximal segment. The distal segment includes a head portion and a threaded shank portion. The proximal segment is represented as an elongated body having an internal bore that extends through its length. A deployable member is disposed within the bore, which is extendible outside the internal bore to securely couple to the distal segment. As an assembly, the distraction screw is used to affix and realign bone during surgical reconstruction. Upon completion of the surgical work, the proximal segment is removed and the distal segment is left attached to the reconstructed bone. Securely affixed, the distal segment provides an additional point of fixation for the skeletal plates that are used to preserve the bony alignment while bone healing occurs. The affixed distal segment will also provide a ready mechanism for distraction screw replacement at the time of surgical revision without obligatory plate removal. Different embodiments of the proximal segment, distal segment and the rotational locking mechanisms which inhibit the rotation of one segment relative to the other during deployment were also described. In addition, in cases where the distraction screw must be placed into the bone at an inclined angle, poly-axial heads were provided so that proper skeletal plate placement can still be accomplished.

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First Claim

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Patent Owner(s)

  • Assignment data not available. Check USPTO

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abdou, M Samy San Diego, CA 32 281

Cited Art

Patent Info (Count) # Cites Year
 
SYNTHES USA, LLC (6)
5,275,601 Self-locking resorbable screws and plates for internal fixation of bone fractures and tendon-to-bone attachment 213 1991
5,534,001 Osteosynthetic fixation element and manipulation device 114 1994
5,709,686 Bone plate 186 1996
5,993,449 Bone-fixing device 47 1998
6,117,135 Device for bone surgery 53 1999
6,187,005 Variable angle spinal fixation system 194 1999
 
DEPUY ACROMED, INC. (3)
5,681,312 Spine construct with band clamp 82 1996
5,713,900 Apparatus for retaining bone portions in a desired spatial relationship 226 1996
5,954,722 Polyaxial locking plate 333 1997
 
WARSAW ORTHOPEDIC, INC. (3)
5,607,426 Threaded polyaxial locking screw plate assembly 302 1996
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AESCULAP AG (2)
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2002/0099,386 Locking mechanism for a bone screw 22 2002
 
BIEDERMANN TECHNOLOGIES GMBH & CO. KG (2)
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EBI, LLC (2)
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HOWMEDICA OSTEONICS CORP. (2)
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ZIMMER SPINE, INC. (2)
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ABDOU, SAMY, DR. (1)
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HARRINGTON, JAMES FREDERICK JR. (1)
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HEGGENESS, MICHAEL (1)
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WENZEL SPINE, INC. (1)
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OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (21)
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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
DEPUY SYNTHES PRODUCTS, LLC (2)
8,361,129 Large diameter bone anchor assembly 0 2007
8,361,123 Bone anchor assemblies and methods of manufacturing and use thereof 0 2009
 
JACKSON, ROGER P. AN INDIVIDUAL (1)
8,398,682 Polyaxial bone screw assembly 0 2010
 
OSTEOMED LLC (1)
8,337,533 Locking plate benders 0 2008
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (10)
8,137,386 Polyaxial bone screw apparatus 1 2003
8,267,273 Hole plug system having opposed engaging ends 0 2007
8,377,102 Polyaxial bone anchor with spline capture connection and lower pressure insert 0 2010
8,308,776 Devices and methods for dynamic fixation of skeletal structure 0 2010
8,261,927 Conical hole plug 0 2010
8,394,133 Dynamic fixation assemblies with inner core and outer coil-like member 0 2010
8,308,782 Bone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation 1 2010
8,398,689 Devices and methods for dynamic fixation of skeletal structure 0 2010
8,377,067 Orthopedic implant rod reduction tool set and method 0 2012
8,444,681 Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert 0 2012

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jul 13, 2016
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 13, 2020
Fee Large entity fee small entity fee micro entity fee
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