US Patent No: 7,214,186

Number of patents in Portfolio can not be more than 2000

Method and device for retractor for microsurgical intermuscular lumbar arthrodesis

ALSO PUBLISHED AS: 20040138534

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An instrument useful in performing lumbar arthrodesis with a minimal approach which spares the lumbar muscles from surgical disruption and includes one of two retractor designs having blades angled approximately 90.degree. with respect to each respective retractor handle. One blade is bent at an end portion thereof in a direction away from the handle portion. The other blade has first and second blade faces, with the second face having at least two toothed structures located thereon.

Loading the Abstract Image... loading....

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

  • Assignment data not available. Check USPTO

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ritland, Stephen Flagstaff, AZ 47 1809

Cited Art Landscape

Patent Info (Count) # Cites Year
 
WARSAW ORTHOPEDIC, INC. (18)
5,593,409 Interbody spinal fusion implants 504 1995
6,080,155 Method of inserting and preloading spinal implants 334 1995
5,785,710 Interbody spinal fusion implants 220 1995
6,270,498 Apparatus for inserting spinal implants 190 1995
6,123,705 Interbody spinal fusion implants 192 1996
5,902,231 Devices and methods for percutaneous surgery 306 1996
6,206,922 Methods and instruments for interbody fusion 230 1998
6,152,871 Apparatus for percutaneous surgery 241 1998
6,206,923 Flexible implant using partially demineralized bone 170 1999
6,245,072 Methods and instruments for interbody fusion 95 1999
6,206,826 Devices and methods for percutaneous surgery 212 1999
6,210,413 Connecting apparatus using shape-memory technology 142 1999
6,287,313 Screw delivery system and method 182 1999
6,293,949 Superelastic spinal stabilization system and method 461 2000
6,443,989 Posterior expandable fusion cage 80 2000
2002/0068,973 Threaded interbody device 20 2000
2001/0047,207 Self-broaching, rotatable, push-in interbody spinal fusion implant and method for deployment thereof 33 2001
2002/0138,146 Anterior expandable spinal fusion cage system 2 2002
 
ZIMMER SPINE, INC. (16)
4,743,260 Method for a flexible stabilization system for a vertebral column 455 1985
5,489,308 Spinal implant 462 1994
6,149,686 Threaded spinal implant with bone ingrowth openings 79 1996
6,045,579 Adjustable height fusion device 296 1997
5,865,847 Lordotic spinal implant 120 1997
5,897,593 Lordotic spinal implant 93 1997
6,120,506 Lordotic spinal implant 118 1997
6,224,631 Intervertebral implant with reduced contact area and method 172 1998
5,997,539 Polyaxial pedicle screw having a compression locking rod gripping mechanism 116 1998
6,132,430 Spinal fixation system 206 1998
6,080,193 Adjustable height fusion device 250 1998
6,368,350 Intervertebral disc prosthesis and method 374 1999
6,113,602 Posterior spinal instrument guide and method 180 1999
6,283,966 Spinal surgery tools and positioning method 86 1999
6,391,058 Threaded spinal implant with convex trailing surface 72 1999
6,530,926 Method of securing vertebrae 199 2000
 
HOWMEDICA OSTEONICS CORP. (13)
5,026,373 Surgical method and apparatus for fusing adjacent bone structures 545 1989
5,055,104 Surgically implanting threaded fusion cages between adjacent low-back vertebrae by an anterior approach 514 1989
5,591,166 Multi angle bone bolt 288 1995
5,766,253 Spinal fusion device 177 1996
5,885,299 Apparatus and method for implant insertion 299 1996
5,782,832 Spinal fusion implant and method of insertion thereof 449 1996
5,968,098 Apparatus for fusing adjacent bone structures 232 1996
6,190,414 Apparatus for fusion of adjacent bone structures 435 1996
5,906,616 Conically shaped anterior fusion cage and method of implantation 152 1997
6,083,225 Method and instrumentation for implant insertion 270 1997
6,102,948 Spinal fusion device 99 1997
6,267,763 Method and apparatus for spinal implant insertion 155 1999
6,395,033 Dynamic fusion mechanostat devices 46 2000
 
KYPHON SARL (13)
5,836,948 Spine distraction implant and method 523 1997
5,860,977 Spine distraction implant and method 452 1997
6,074,390 Spine distraction implant and method 251 1998
6,090,112 Spine distraction implant and method 156 1998
5,876,404 Spine distraction implant and method 183 1998
6,068,630 Spine distraction implant 348 1998
6,048,342 Spine distraction implant 380 1998
6,156,038 Spine distraction implant and method 158 1999
6,149,652 Spine distraction implant and method 149 1999
6,152,926 Spine distraction implant and method 145 1999
6,190,387 Spine distraction implant 154 1999
6,235,030 Spine distraction implant 200 1999
6,332,883 Spine distraction implant 147 2000
 
SDGI HOLDINGS, INC. (10)
5,643,264 Iliac screw 73 1995
5,792,044 Devices and methods for percutaneous surgery 372 1996
5,954,635 Devices and methods for percutaneous surgery 257 1997
6,007,487 Tissue retractor for use through a cannula 209 1997
5,891,147 Minimally invasive spinal surgical methods & instruments 207 1997
6,176,823 Fixture for supporting a viewing element within a cannula 109 1998
6,162,170 Devices and methods for percutaneous surgery 130 1999
6,217,509 Devices and methods for percutaneous surgery 189 1999
6,206,822 Devices and methods for percutaneous surgery 167 1999
6,520,907 Methods for accessing the spinal column 286 1999
 
BOSTON SCIENTIFIC SCIMED, INC. (4)
5,292,309 Surgical depth measuring instrument and method 213 1993
5,431,639 Treating wounds caused by medical procedures 291 1993
5,489,274 Rotatable medical valve closure 75 1994
5,766,221 Bone anchor implantation device 170 1995
 
SYNTHES USA, LLC (4)
5,002,542 Pedicle screw clamp 179 1989
5,851,207 Freely separable surgical drill guide and plate 139 1997
6,342,057 Remotely aligned surgical drill guide 129 2000
6,524,238 Universal handle and method for use 54 2000
 
ZIMMER TECHNOLOGY, INC. (4)
5,312,405 Spinal rod coupler 214 1992
5,275,600 Telescoping rod to rod coupler for a spinal system 95 1992
5,484,440 Bone screw and screwdriver 139 1994
6,258,097 Head center instrument and method of using the same 76 2000
 
OLYMPUS OPTICAL CO., LTD. (3)
6,371,968 Cavity retaining tool for bone surgery, a cavity retaining tool for general surgery, an endoscopic surgery system involving the use of a cavity retaining tool, and a procedure for surgery 232 1997
6,120,434 Method of securing a cavity using a rigid sheath with transparent cap 99 1997
5,976,146 Surgical operation system and method of securing working space for surgical operation in body 224 1998
 
Sangadensetsukogyo Co., Ltd. (3)
D433296 Socket for manual tool 33 1999
D436513 Socket for screwdriver 33 1999
6,418,821 Working tool 38 2000
 
STRYKER TECHNOLOGIES CORPORATION (3)
5,725,528 Modular polyaxial locking pedicle screw 222 1997
5,752,957 Polyaxial mechanism for use with orthopaedic implant devices 206 1997
5,800,435 Modular spinal plate for use with modular polyaxial locking pedicle screws 266 1997
 
B. BRAUN MELSUNGEN AG (2)
5,135,525 Catheter set for continuous spinal anaesthesia 117 1990
5,106,376 Anaesthesia set 142 1990
 
CHILDREN'S MEDICAL CENTER CORPORATION (2)
5,565,502 Isolation of the calcium-phosphate crystals of bone 50 1995
5,691,397 Isolation of the calcium-phosphate crystals of bone 46 1996
 
DEPUY SYNTHES PRODUCTS, LLC (2)
6,159,179 Cannula and sizing and insertion method 135 1999
2005/0004,593 Non cannulated dilators 137 2004
 
GREENBERG SURGICAL TECHNOLOGIES, LLC (2)
5,133,720 Surgical drill guide and retractor 62 1991
5,558,622 Mandibular border retractor and method for fixating a fractured mandible 50 1994
 
SOFAMOR DANEK GROUP, INC. (2)
5,643,263 Spinal implant connection assembly 114 1995
5,885,285 Spinal implant connection assembly 123 1996
 
STRYKER SPINE (2)
6,440,169 Interspinous stabilizer to be fixed to spinous processes of two vertebrae 463 2000
6,565,569 Backbone osteosynthesis system with clamping means, in particlular for anterior fixing 59 2001
 
TYCO HEALTHCARE GROUP LP (2)
5,275,611 Tension guide and dilator 113 1992
5,312,360 Tension guide and dilator 127 1993
 
United States Surgical Corporation (2)
6,224,608 Tissue holding device and method 73 1993
6,063,088 Method and instrumentation for implant insertion 323 1997
 
2507-PARADIGM BIODEVICES, INC. (1)
5,954,671 Bone harvesting method and apparatus 80 1998
 
ABBOTT SPINE INC. (1)
2003/0171,749 Semirigid linking piece for stabilizing the spine 239 2003
 
ACROMED (1)
5,129,900 Spinal column retaining method and apparatus 312 1990
 
Advanced Technical Fabrication (1)
5,683,463 Intersomatic vertebral column implant 188 1994
 
AESCULAP AG & CO. KG (1)
5,035,232 Retractor 95 1990
 
ALPHATEC MANUFACTURING, INC. (1)
5,098,435 Cannula 206 1990
 
ANOVA CORP. (1)
6,248,106 Cross-coupled vertebral stabilizers 242 2000
 
APPLIED MEDICAL RESOURCES CORPORATION (1)
5,743,853 Serrated S-retractor 58 1996
 
ARTIFEX LTD. (1)
5,865,848 Dynamic intervertebral spacer and method of use 322 1997
 
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA (1)
5,885,300 Guide apparatus of intervertebral implant 90 1997
 
B.E.I. Medical (1)
5,472,426 Cervical discectomy instruments 155 1993
 
BIOMET MANUFACTURING CORP. (1)
5,895,390 Pin placement guide used in making a bone entry hole for implantation of an intramedullary nail 82 1997
 
CODMAN & SHURTLEFF, INC. (1)
5,052,373 Spinal retractor 269 1990
 
CONMED CORPORATION (1)
5,279,567 Trocar and tube with pressure signal 110 1992
 
COVIDIEN AG (1)
5,816,257 Gasless retroperitoneal surgical procedure 48 1995
 
CROSS MEDICAL PRODUCTS, LLC (1)
5,474,555 Spinal implant system 493 1994
 
DEPUY ACROMED, INC. (1)
5,716,415 Spinal implant 367 1996
 
DEPUY SPINE SARL (1)
6,117,137 Osteosynthesis device 67 1999
 
DEPUY SPINE, INC. (1)
2003/0187,431 Apparatus and method for targeting for surgical procedures 38 2002
 
DYNAMIC SPINE, INC. (1)
5,827,328 Intervertebral prosthetic device 322 1996
 
ETHICON ENDO-SURGERY, INC. (1)
6,197,002 Laparoscopic tool and method 106 1999
 
FARRELL, EDWARD M. (1)
4,862,891 Device for sequential percutaneous dilation 182 1988
 
GENERAL SURGICAL INNOVATIONS, INC. (1)
5,913,818 Vascular retractor 64 1997
 
H. G. Wallace Limited (1)
4,863,423 Catheter and cannula assembly 47 1988
 
HOPITAL ORTHOPEDIQUE DE LA SUISSE ROMANDE (1)
2002/0058,948 Targeting system and method for distal locking of intramedullary nails 39 2001
 
INNOVASIVE ACQUISITION CORP. (1)
5,431,651 Cross pin and set screw femoral and tibial fixation method 139 1993
 
INTEGRA OHIO, INC. (1)
5,928,233 Spinal fixation device with laterally attachable connectors 162 1997
 
ISOLA IMPLANTS, INC. (1)
5,984,924 Bone alignment system having variable orientation bone anchors 78 1998
 
JPMORGAN CHASE BANK, N.A. (1)
6,156,006 Medical instrument system for piercing through tissue 77 1999
 
LASERSCOPE, A CORP. OF CA (1)
5,084,043 Method for performing a percutaneous diskectomy using a laser 113 1990
 
Machida Endoscope Co., Ltd. (1)
6,461,330 Surgical operation guiding apparatus 46 2000
 
MASCO CORPORATION OF INDIANA (1)
D466766 Wrench 32 2001
 
MCPHERSON, WILLIAM E. (1)
5,687,739 Biopsy specimen cutter 73 1996
 
MEDICREA TECHNOLOGIES (1)
6,267,765 Multidirectional adaptable vertebral osteosyntsis device with reduced space requirement 168 2000
 
MITEK SURGICAL PRODUCTS, INC. (1)
5,356,413 Surgical anchor and method for deploying the same 213 1993
 
NEMCOMED, INC. (1)
6,312,432 Bone drill 46 2000
 
Neurodynamics, Inc. (1)
6,206,885 Catheter guide and drill guide apparatus and method for perpendicular insertion into a cranium orifice 68 1999
 
ORTHOPEDIC SYSTEMS, INC. (1)
RE36020 Method and apparatus for tying suture to bone 88 1995
 
PALOMAR MEDICAL TECHNOLOGIES, LLC (1)
2003/0195,494 Light energy delivery head 2003
 
PARADIGM SPINE (1)
5,645,599 Interspinal vertebral implant 651 1996
 
RICHARDS MEDICAL COMPANY (1)
4,617,922 Compression screw assembly 44 1984
 
ROBERT REID, INC. (1)
6,074,393 Bone fixing screws 39 1997
 
Shapiro Partners Limited (1)
5,439,464 Method and instruments for performing arthroscopic spinal surgery 350 1993
 
SMITH & NEPHEW ORTHOPAEDICS AG (1)
6,290,700 Device for stiffening and/or correcting a vertebral column or such like 151 2000
 
SMITH & NEPHEW RICHARDS INC. (1)
4,573,448 Method for decompressing herniated intervertebral discs 499 1983
 
SOFAMOR DANEK HOLDINGS, INC. (1)
6,348,058 Image guided spinal surgery guide, system, and method for use thereof 218 1998
 
Solco Surgical Instruments Co., Ltd. (1)
6,264,658 Spine fixing apparatus 91 1999
 
SPIDER-TEK, LLC (1)
6,368,351 Intervertebral space implant for use in spinal fusion procedures 168 2001
 
SPINEOLOGY, INC. (1)
5,591,235 Spinal fixation device 236 1995
 
ST. FRANCIS MEDICAL TECHNOLOGIES, INC. (1)
6,183,471 Spine distraction implant and method 147 1998
 
St. Francis Technologies, Inc. (1)
6,238,397 Spine distraction implant and method 178 1999
 
STECK MNAUFACTURING COMPANY, INC. (1)
2002/0011,135 Reversible socket wrench set 34 2001
 
STEPHEN RITLAND (1)
2003/0220,689 Device and method for assisting in positioning implants 35 2003
 
STRYKER FRANCE S.A. (1)
6,267,764 Osteosynthesis system with elastic deformation for spinal column 225 1999
 
STRYKER TRAUMA GMBH (1)
6,261,287 Apparatus for bracing vertebrae 165 2000
 
SURGICAL DESIGN SYSTEMS, LLC (1)
5,363,841 Retractor for spinal surgery 74 1993
 
SYNTHES (U.S.A.) (1)
4,803,976 Sighting instrument 192 1988
 
TERUMO KABUSHIKI KAISHA (1)
6,162,236 Trocar needle and expandable trocar tube 117 1997
 
TEXTRON IPMP L.P. (1)
6,354,176 Universal deep socket and adapter 47 2000
 
THE CLEVELAND CLINIC FOUNDATION (1)
6,551,320 Method and apparatus for correcting spinal deformity 141 2001
 
The Procter & Gamble Company (1)
5,628,740 Articulating toggle bolt bone screw 272 1995
 
THOMPSON SURGICAL INSTRUMENTS, INC. (1)
6,296,609 Surgical retractor and related surgical approach to access the anterior lumbar region 48 2000
 
ULRICH GROSS (1)
5,002,576 Intervertebral disk endoprosthesis 403 1989
 
UNIVERSITY OF MIAMI (1)
5,415,661 Implantable spinal assist device 695 1993
 
VANDERBILT UNIVERSITY (1)
5,735,899 Low profile intraosseous anterior spinal fusion system and method 153 1996
 
Vector Medical, Inc. (1)
6,081,741 Infrared surgical site locating device and method 85 1999
 
VYGON (1)
5,611,778 Surgical instrument for performing epidural anesthesia 70 1994
 
Watanabe Orthopedic Systems, Inc. (1)
4,747,394 Spinal retractor 105 1986
 
WAXMAN, HENRY A. (1)
6,214,004 Vertebral triplaner alignment facilitator 42 1998
 
WENZEL SPINE, INC. (1)
5,030,220 Spine fixation system 295 1990
 
WORCESTER POLYTECHNIC INSTITUTE (1)
5,746,741 External fixator system 80 1996
 
ZIMMER DENTAL, INC. (1)
5,306,309 Spinal disk implant and implantation kit 648 1992
 
Other [Check patent profile for assignment information] (53)
4,232,660 Winged irrigating surgical retractor 85 1979
4,481,947 Endotracheal tube retractor 48 1980
4,440,168 Surgical device 44 1981
4,545,374 Method and instruments for performing a percutaneous lumbar diskectomy 742 1982
4,736,738 Instrument kit and procedure for performing posterior lumbar interbody fusion 223 1985
4,620,460 Socket set 44 1985
4,686,972 Surgical deflector and drilling guide 133 1986
4,798,111 Socket-wrench hand tool 34 1987
4,817,587 Ring para-spinal retractor 107 1987
4,995,875 Femoral elevating tool 35 1988
4,882,958 Stacking socket wrench set 43 1988
5,048,379 Multi-functional double-ended socket wrenches 57 1990
5,158,543 Laparoscopic surgical system and method 144 1990
5,148,724 Ratchet wrench and socket apparatus 40 1991
5,195,541 Method of performing laparoscopic lumbar discectomy 260 1991
5,303,694 Method for performing hip surgery and retractor for use therein 58 1993
5,512,038 Spinal retractor apparatus having a curved blade 79 1993
D361381 Combined spine and sternum retractor frame 47 1994
5,601,550 Pelvic pin guide system for insertion of pins into iliac bone 77 1994
5,466,238 Vertebral locking and retrieving system having a fixation crossbar 38 1994
5,882,344 Adjustable length cannula and trocar 160 1995
5,899,901 Spinal fixation system 134 1995
5,690,632 Osteosynthesis screw fastener having angularly adjustable threads and methods of use therefor 134 1995
5,746,720 Method and apparatus for insertion of a cannula and trocar 111 1995
5,702,455 Expandable prosthesis for spinal fusion 450 1996
5,971,920 Surgical retractor 44 1997
5,944,658 Lumbar spinal fusion retractor and distractor system 249 1997
D399955 Combined spine/sternum retractor frame and blades 36 1997
5,996,447 Sink wrench 48 1997
6,179,838 Bone fixation arrangements and method 117 1998
5,895,352 Surgical retractor 53 1998
6,010,520 Double tapered esophageal dilator 56 1998
5,928,139 Retractor with adjustable length blades and light pipe guides 209 1998
6,117,174 Spinal implant device 153 1998
5,967,970 System and method for balloon-assisted retraction tube 57 1998
6,123,706 Apparatus for stabilizing certain vertebrae of the spine 101 1998
6,050,997 Spinal fixation system 226 1999
6,224,597 Vertebral triplaner alignment method 41 1999
D438074 Tap socket 32 1999
6,371,959 Radiolucent position locating device and drill guide 58 2000
6,540,756 Portal acquisition tool 38 2000
6,428,472 Surgical retractor having a malleable support 125 2000
2001/0010,021 Flexible implant using partially demineralized bone 73 2001
2002/0016,592 Interbody fusion grafts and instrumentation 56 2001
6,736,816 Polyaxial connection device and method 90 2001
2002/0029,082 Vertebral spacer and method of use 36 2001
6,692,434 Method and device for retractor for microsurgical intermuscular lumbar arthrodesis 51 2001
2004/0106,997 Apparatus and method for creating a surgical channel 71 2002
2003/0171,751 Pedicle screw connector apparatus and method 36 2003
2004/0002,708 Dynamic fixation device and method of use 178 2003
2005/0020,920 Surgical image tracker mounting base apparatus and method of use 20 2003
2004/0172,023 Polyaxial connection device and method 16 2004
2004/0254,428 Intermuscular guide for retractor insertion and method of use 20 2004

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BAXANO SURGICAL, INC. (34)
8,192,435 Devices and methods for tissue modification 18 2005
7,963,915 Devices and methods for tissue access 27 2005
7,918,849 Devices and methods for tissue access 43 2005
7,740,631 Devices and methods for tissue modification 50 2005
7,738,968 Devices and methods for selective surgical removal of tissue 33 2005
7,553,307 Devices and methods for tissue modification 50 2005
7,555,343 Devices and methods for selective surgical removal of tissue 44 2005
7,887,538 Methods and apparatus for tissue modification 32 2006
8,430,881 Mechanical tissue modification devices and methods 0 2006
7,578,819 Spinal access and neural localization 33 2006
7,857,813 Tissue access guidewire system and method 48 2006
8,062,298 Flexible tissue removal devices and methods 18 2007
8,062,300 Tissue removal with at least partially flexible devices 16 2007
7,959,577 Method, system, and apparatus for neural localization 26 2008
8,257,356 Guidewire exchange systems to treat spinal stenosis 3 2008
8,192,436 Tissue modification devices 8 2008
8,092,456 Multiple pathways for spinal nerve root decompression from a single access point 9 2009
7,738,969 Devices and methods for selective surgical removal of tissue 23 2009
8,221,397 Devices and methods for tissue modification 4 2009
8,419,653 Spinal access and neural localization 0 2009
8,409,206 Tissue modification devices and methods 0 2010
8,394,102 Surgical tools for treatment of spinal stenosis 0 2010
8,551,097 Tissue access guidewire system and method 0 2010
8,303,516 Method, system and apparatus for neural localization 1 2011
8,617,163 Methods, systems and devices for carpal tunnel release 0 2011
8,613,745 Methods, systems and devices for carpal tunnel release 0 2011
8,663,228 Tissue modification devices 0 2011
8,652,138 Flexible tissue rasp 0 2011
8,585,704 Flexible tissue removal devices and methods 0 2011
8,366,712 Multiple pathways for spinal nerve root decompression from a single access point 5 2011
8,398,641 Tissue modification devices and methods 5 2011
8,801,626 Flexible neural localization devices and methods 0 2011
8,647,346 Devices and methods for tissue modification 0 2012
8,568,416 Access and tissue modification systems and methods 0 2012
 
GREATBATCH LTD. (7)
D658285 Femoral neck elevator 2 2011
D658286 Double ended retractor 4 2011
D658287 Inferior acetabular/piriformis retractor 3 2011
D658288 Anterior retractor 2 2011
D658289 Secondary anterior retractor 2 2011
D658290 Posterior retractor 2 2011
D706924 Superior acetabular retractor 0 2012
 
NUVASIVE, INC. (6)
8,088,163 Tools and methods for spinal fusion 17 2009
8,357,184 Method and apparatus for performing spinal surgery 3 2010
8,535,320 Method and apparatus for performing spinal surgery 0 2011
8,435,269 Method and apparatus for performing spinal fusion surgery 2 2011
8,292,960 Spinal fusion cage with removable planar elements 6 2012
8,715,355 Spinal fusion cage with removable planar elements 0 2012
 
KLEINER INTELLECTUAL PROPERTY, LLC (3)
D656610 Spinal distraction instrument 12 2011
8,277,510 Tools and methods for spinal fusion 5 2011
D696399 Spinal distraction instrument 0 2012
 
Spinal Surgical Strategies, LLC (2)
8,685,031 Bone graft delivery system 0 2013
8,709,088 Fusion cage with combined biological delivery system 0 2013
 
Baxano Signal, Inc. (1)
8,579,902 Devices and methods for tissue modification 0 2012
 
Other [Check patent profile for assignment information] (7)
8,262,571 Intermuscular guide for retractor insertion and method of use 0 2004
7,959,564 Pedicle seeker and retractor, and methods of use 5 2007
8,366,748 Apparatus and method of spinal implant and fusion 2 2009
8,636,655 Tissue retraction system and related methods 0 2011
D667542 Spinal distraction instrument 6 2012
D700322 Intervertebral surgical tool 0 2012
8,808,305 Spinal fusion cage system with inserter 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 Nov 8, 2014
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 8, 2018
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