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, IN1815

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McGahan, Thomas Memphis, US 13 1177
Zdeblick, Thomas Middleton, US 25 2853

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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5,236,460 Vertebral body prosthesis 400 1991
 
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4,743,259 Use of demineralized bone matrix in the repair of segmental defects 98 1986
 
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5,549,612 Osteosynthesis plate system 341 1994
 
The Regents of the University of California (2)
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5,713,899 Cervical cage designed for the performance of intersomatic arthrodesis 218 1996
 
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ZIMMER SPINE, INC. (12)
4,936,848 Implant for vertebrae 412 1989
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The United States of America as represented by the Secretary of the Navy (1)
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5,683,394 Fusion mass constrainer 229 1995
 
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* 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 14 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 31 2008
8,257,439 Intervertebral disc prosthesis 12 2009
8,267,999 Intervertebral disc prosthesis 14 2009
8,979,932 Intervertebral disc prosthesis 0 2010
8,974,532 Intervertebral disc prosthesis 1 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 24 2006
 
CENTINEL SPINE, INC. (2)
* 9,066,815 Spinal implant with attachment system 0 2010
* 2011/0166,658 SPINAL IMPLANT WITH ATTACHMENT SYSTEM 17 2010
 
DEPUY SYNTHES PRODUCTS, LLC (4)
* 8,617,246 Devices and methods for facilitating controlled bone growth or repair 2 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 12 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 (2)
9,380,932 Retractor devices for minimally invasive access to the spine 0 2012
9,216,096 Intervertebral implants and related tools 0 2015
* Cited By Examiner

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
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
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