US Patent No: 7,985,258

Number of patents in Portfolio can not be more than 2000

Methods and instruments for interbody fusion

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ALSO PUBLISHED AS: 20100125333
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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A laparoscopic surgical technique is provided for preparing a site for implantation of a novel fusion device or implant. In accordance with one embodiment of the technique, a laparoscope is provided having an outer sleeve with distraction fingers at one end to distract the disc space. The laparoscope provides a sealed working channel to the disc space, through which the disc space is distracted, the vertebral endplates and surrounding disc is reamed, and the fusion device inserted. A distraction plug is provided for centering the outer sleeve and for providing midline distraction of the disc space. In one embodiment, a fusion device includes diverging bone screws passing through an end wall and upper and lower walls of the device to engage the adjacent vertebrae. In another embodiment, a connector plate is engaged to bilaterally position fusion devices to prevent rotation and resist expulsion of the devices from the disc space.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
WARSAW ORTHOPEDIC, INC.WARSAW, IN1653

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McGahan, Thomas Memphis, TN 15 787
Zdeblick, Thomas Middletown, WI 29 1955

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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6,821,298 Anterior expandable spinal fusion cage system 122 2000
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7,740,630 Anterior cervical plate system having vertebral body engaging anchors and connecting plate 5 2002
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7,235,105 Threaded center line cage with winged end gap 8 2003
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BRANTIGAN, W. JOHN DR.( CREIGHTON UNIVERSITY SCHOOL OF MEDICINE) (5)
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The Johns Hopkins University (2)
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5,338,433 Chromium alloy electrodeposition and surface fixation of calcium phosphate ceramics 14 1993
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (2)
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ZIMMER GMBH (2)
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ZIMMER TECHNOLOGY, INC. (2)
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Blacksheep Technologies Incorporated (1)
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CHOW, DONALD (1)
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LANX, LLC (1)
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LDR MEDICAL (1)
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The United States of America as represented by the Secretary of the Navy (1)
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Other [Check patent profile for assignment information] (19)
4,349,921 Intervertebral disc prosthesis 829 1980
4,309,777 Artificial intervertebral disc 636 1980
4,545,374 Method and instruments for performing a percutaneous lumbar diskectomy 710 1982
4,736,738 Instrument kit and procedure for performing posterior lumbar interbody fusion 215 1985
4,599,086 Spine stabilization device and method 483 1985
4,820,305 Place holder, in particular for a vertebra body 277 1987
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5,360,430 Intervertebral locking device 283 1993
5,423,816 Intervertebral locking device 224 1993
5,514,180 Prosthetic intervertebral devices 622 1994
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5,423,817 Intervertebral fusing device 134 1994
5,601,556 Apparatus for spondylolisthesis reduction 102 1995
5,697,977 Method and apparatus for spondylolisthesis reduction 79 1995
6,066,175 Fusion stabilization chamber 165 1998
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6,432,140 Intervertebral retrieval device 72 2000
6,926,737 Spinal fusion apparatus and method 35 2002
2004/0153,089 Methods and instruments for interbody fusion 14 2004

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
LDR MEDICAL (4)
8,465,546 Intervertebral disc prosthesis insertion assemblies 2 2007
8,343,219 Intersomatic cage, intervertebral prosthesis, anchoring device and implantation instruments 4 2008
8,257,439 Intervertebral disc prosthesis 2 2009
8,267,999 Intervertebral disc prosthesis 2 2009
 
DEPUY SYNTHES PRODUCTS, LLC (2)
8,617,246 Devices and methods for facilitating controlled bone growth or repair 0 2010
8,523,908 Devices and methods for facilitating controlled bone growth or repair 0 2012
 
DEPUY SPINE, INC. (1)
8,142,503 Devices and methods for facilitating controlled bone growth or repair 4 2006

Maintenance Fees

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3.5 Year Payment $1600.00 $800.00 $400.00 Jan 26, 2015
7.5 Year Payment $3600.00 $1800.00 $900.00 Jan 26, 2019
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 26, 2023
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Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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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