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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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, IN1786

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McGahan, Thomas Memphis, US 13 1133
Zdeblick, Thomas Middleton, US 25 2758

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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7,235,105 Threaded center line cage with winged end gap 24 2003
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5,236,460 Vertebral body prosthesis 396 1991
 
UNIVERSITY OF VIRGINIA (1)
4,743,259 Use of demineralized bone matrix in the repair of segmental defects 95 1986
 
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5,549,612 Osteosynthesis plate system 332 1994
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (2)
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ZIMMER SPINE, INC. (12)
4,936,848 Implant for vertebrae 407 1989
5,458,638 Non-threaded spinal implant 509 1992
5,489,307 Spinal stabilization surgical method 594 1994
5,489,308 Spinal implant 523 1994
5,609,636 Spinal implant 486 1996
5,676,666 Cervical spine stabilization system 265 1996
* 5,658,337 Intervertebral fusion implant 316 1996
6,149,686 Threaded spinal implant with bone ingrowth openings 87 1996
* 6,416,515 Spinal fixation system 194 1996
* 5,885,287 Self-tapping interbody bone implant 58 1997
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Zimmer Trabecular Metal Technology, Inc. (1)
5,443,515 Vertebral body prosthetic implant with slidably positionable stabilizing member 183 1994
 
The United States of America as represented by the Secretary of the Navy (1)
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SDGI HOLDINGS, INC. (9)
5,306,310 Vertebral prosthesis 256 1992
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6,875,213 Method of inserting spinal implants with the use of imaging 122 2003
 
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5,147,404 Vertebra prosthesis 213 1990
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
* 2011/0238,184 METHODS AND INSTRUMENTS FOR INTERBODY FUSION 1 2011
* 2012/0310,282 DEVICE AND METHOD FOR THE PREVENTION OF MULTI-LEVEL VERTEBRAL EXTENSION 2 2012
 
LDR MEDICAL (12)
8,858,635 Intervertebral disc prosthesis 2 2005
8,465,546 Intervertebral disc prosthesis insertion assemblies 10 2007
9,333,095 Intervertebral disc prosthesis, surgical methods, and fitting tools 0 2008
8,343,219 Intersomatic cage, intervertebral prosthesis, anchoring device and implantation instruments 25 2008
8,257,439 Intervertebral disc prosthesis 8 2009
8,267,999 Intervertebral disc prosthesis 12 2009
8,979,932 Intervertebral disc prosthesis 0 2010
8,974,532 Intervertebral disc prosthesis 0 2011
9,078,765 Vertebral cage device with modular fixation 0 2012
9,044,337 Anchoring device and system for an intervertebral implant, intervertebral implant and implantation instrument 1 2012
8,771,284 Intervertebral disc prosthesis and instrumentation for insertion of the prosthesis between the vertebrae 2 2012
9,039,774 Anchoring device and system for an intervertebral implant, intervertebral implant and implantation instrument 1 2013
 
DEPUY SPINE, INC. (1)
8,142,503 Devices and methods for facilitating controlled bone growth or repair 22 2006
 
CENTINEL SPINE, INC. (2)
* 9,066,815 Spinal implant with attachment system 0 2010
* 2011/0166,658 SPINAL IMPLANT WITH ATTACHMENT SYSTEM 16 2010
 
DEPUY SYNTHES PRODUCTS, LLC (4)
* 8,617,246 Devices and methods for facilitating controlled bone growth or repair 1 2010
8,840,677 Allograft bone plugs, systems and techniques 0 2010
8,523,908 Devices and methods for facilitating controlled bone growth or repair 10 2012
8,906,093 Devices and methods for facilitating controlled bone growth or repair 0 2013
 
ASFORA IP, LLC (2)
9,271,742 System for joint fusion 0 2013
9,271,743 System for joint fusion 0 2013
 
ASFORA, WILSON T. (1)
9,295,488 Joint fusion 0 2012
 
Pinnacle Spine Group, LLC (1)
9,216,096 Intervertebral implants and related tools 0 2015
* Cited By Examiner

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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