US Patent No: 7,985,258

Number of patents in Portfolio can not be more than 2000

Methods and instruments for interbody fusion

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, IN1710

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McGahan, Thomas Memphis, TN 15 840
Zdeblick, Thomas Middletown, WI 29 2068

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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D377095 Interbody spinal implant 63 1994
D377096 Interbody spinal implant 52 1994
5,593,409 Interbody spinal fusion implants 498 1995
5,772,661 Methods and instrumentation for the surgical correction of human thoracic and lumbar spinal disease from the antero-lateral aspect of the spine 523 1995
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6,206,922 Methods and instruments for interbody fusion 229 1998
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6,436,139 Interbody fusion device with anti-rotation features 45 2000
6,821,298 Anterior expandable spinal fusion cage system 140 2000
6,485,517 Nested interbody spinal fusion implants 105 2000
6,576,017 Spinal implant with attached ligament and methods 127 2001
6,835,206 Anterior expandable spinal fusion cage system 128 2002
7,740,630 Anterior cervical plate system having vertebral body engaging anchors and connecting plate 6 2002
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7,235,105 Threaded center line cage with winged end gap 9 2003
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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 DENTAL, INC. (2)
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ZIMMER TECHNOLOGY, INC. (2)
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DANEK GROUP, INC. (1)
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LANX, LLC (1)
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The Dow Chemical Company (1)
5,646,084 Polymerization process using diene containing catalysts 18 1995
 
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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 865 1980
4,309,777 Artificial intervertebral disc 660 1980
4,545,374 Method and instruments for performing a percutaneous lumbar diskectomy 738 1982
4,736,738 Instrument kit and procedure for performing posterior lumbar interbody fusion 221 1985
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5,514,180 Prosthetic intervertebral devices 648 1994
5,431,658 Facilitator for vertebrae grafts and prostheses 332 1994
5,423,817 Intervertebral fusing device 143 1994
5,601,556 Apparatus for spondylolisthesis reduction 106 1995
5,697,977 Method and apparatus for spondylolisthesis reduction 82 1995
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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
LDR MEDICAL (5)
8,465,546 Intervertebral disc prosthesis insertion assemblies 2 2007
8,343,219 Intersomatic cage, intervertebral prosthesis, anchoring device and implantation instruments 5 2008
8,257,439 Intervertebral disc prosthesis 4 2009
8,267,999 Intervertebral disc prosthesis 4 2009
8,771,284 Intervertebral disc prosthesis and instrumentation for insertion of the prosthesis between the vertebrae 0 2012
 
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 2 2012
 
DEPUY SPINE, INC. (1)
8,142,503 Devices and methods for facilitating controlled bone growth or repair 7 2006

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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 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