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US5658335: Spinal fixator

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Filing Information

Inventor(s) Ronald C. Allen ·
Assignee(s) Cohort Medical Products Group, Inc. ·
Attorney/Agent(s) James E. Eakin ·
Primary Examiner Mary Beth Jones ·
Application Number US8401212
Filing date 03/09/1995
Issue date 08/19/1997
Predicted expiration date 03/09/2015
U.S. Classifications 623/17  · 606/61  ·
International Classifications A61F 244  ·
Kind CodeA
International Classifications 62316;17;18 ·
3 Claims, No Drawings


Abstract

An adjustable spinal fixator for insertion between adjacent vertebrae comprises a contoured housing defining convex edges to fit within the concavity of the vertebral body. An externally threaded core extends through the housing, and a pair of internally threaded nut assemblies attach to the core member. Four crown members with teeth are separately mounted within the housing and retract and variably extend with the movement of the movable nuts on the core member. Two of the crown members extend and retract from the top of the housing, and the remaining two crown members extend and retract from the bottom of the housing. The spinal fixator is positioned between adjacent vertebrae with the crown members retracted so that the teeth are below the convex edges of the housing. Following placement, the crown members are extended outwardly from the top and bottom of the housing by rotation of the core member which causes the teeth to penetrate the bone at an angle to secure the spinal fixator in position. Preferably, a bone graft surrounds the implanted spinal fixator which defines apertures for bony ingrowth. Several sizes of spinal fixators exist to accommodate differing anatomies of the spine.

Independent Claims | See all claims (3)

  1. 1. A bone immobilization device for connecting bone to bone comprising:housing means defining a perimeter;at least two, separate crown means mounted inside the perimeter of the housing means, each crown means defining at least one outwardly extending tooth means; andmeans including a core member extending through the housing means and having nut means movably attached to external threads thereon for retracting the at least two, separate crown means inside the perimeter and for extending the at least two, separate crown means outside the perimeter, the at least one tooth means adapted to penetrate bone.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3741205 MARKOLF K Markolf et al. Jun 1973
US4289123 DUNN HAROLD K Dunn Sep 1981
US4309777 Patil Jan 1982
US4401112 REZAIAN SEYED M Rezaian Aug 1983
US4502160 Dow Corning Wright Moore et al. Mar 1985
US4502161 Wall Mar 1985
US4553273 Henry Ford Hospital Wu Nov 1985
US4599086 DOTY JAMES R Doty Jul 1986
US5015247 MICHELSON GARY K Michelson May 1991
US5123926 PISHARODI MADHAVAN Pisharodi Jun 1992
US5458641 Ramirez Jimenez Oct 1995
US5534029 Yumiko Shima Shima Jul 1996
US5534031 Asahi Kogaku Kogyo Kabushiki Kaisha Matsuzaki et al. Jul 1996

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
SU1107854KH NII ORTOPED TRAVMATOLOGAug 1984
SU1560184KH NII ORTOPED TRAVMATOLOGApr 1990
WO199426213Nov 1994

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
EP1925272 BIEDERMANN MOTECH GmbH Wilfried Matthis et al. Jan 2010
EP1639968 Cervitech, Inc. Arnold Keller Mar 2006
EP0977529 BIEDERMANN MOTECH GmbH Jrgen HARMS et al. Feb 2003
US5800550 Mario M. Sertich Sep 1998
US5755798 Artos Medizinische Produkte GmbH Luca Papavero et al. May 1998
US6241769 Cortek, Inc. James E. Nicholson et al. Jun 2001
US5893890 Perumala Corporation Madhavan Pisharodi Apr 1999
US6214050 Donald R. Huene Apr 2001
US6190413 Ulrich GmbH & Co. KG John Sutcliffe Feb 2001
US6190414 Surgical Dynamics Inc. Wayne P. Young et al. Feb 2001
US6080193 Spinal Concepts, Inc. Stephen H. Hochshuler et al. Jun 2000
US6113638 Lytton A. Williams et al. Sep 2000
US6176882 Biedermann Motech GmbH Lutz Biedermann et al. Jan 2001
US5904719 TechSys Medical, LLC Joseph P. Errico et al. May 1999
US6102949 Biedermann Motech GmbH Lutz Biedermann et al. Aug 2000
US6126691 Mount Sinai Hospital Corporation Mehran Kasra et al. Oct 2000
US6063121 Ravi Xavier et al. May 2000
US6419706 Sofamor S.N.C. Henry Graf Jul 2002
US6527803 Dimso (Distribution Medicale Du Sud-Ouest) Yves Crozet et al. Mar 2003
US7273496 St. Francis Medical Technologies, Inc. Steve Mitchell Sep 2007
US7217291 St. Francis Medical Technologies, Inc. James F. Zucherman et al. May 2007
US6562074 MedicineLodge, Inc. Daniel E. Gerbec et al. May 2003
US7481839 Kyphon SARL James F. Zucherman et al. Jan 2009
US6432107 Bret A. Ferree Aug 2002
US6706070 Spinal Concepts, Inc. Erik J. Wagner et al. Mar 2004
US6800092 Lytton A. Williams et al. Oct 2004
US7575601 Warsaw Orthopedic, Inc. Andrew M. Dickson Aug 2009
US6896676 SpineCore, Inc. Rafail Zubok et al. May 2005
US6833006 SDGI Holdings, Inc. Kevin Foley et al. Dec 2004
US6863673 Movdice Holding, Inc. Daniel E. Gerbec et al. Mar 2005
US7223292 SYNTHES (U.S.A.) Dominique Messerli et al. May 2007
US7569074 Warsaw Orthopedic, Inc. Lukas Eisermann et al. Aug 2009
US7637952 Zimmer Spine, Inc. Michael E. Landry et al. Dec 2009
US7083649 St. Francis Medical Technologies, Inc. James F. Zucherman et al. Aug 2006
US6974480 Synthes (USA) Dominique Messerli et al. Dec 2005
US7217293 Warsaw Orthopedic, Inc. Charles L. Branch, Jr. May 2007
US6592624 DePuy AcroMed, Inc. Robert D. Fraser et al. Jul 2003
US7087055 SDGI Holdings, Inc. Roy Lim et al. Aug 2006
US6576016 Spinal Concepts, Inc. Stephen H. Hochshuler et al. Jun 2003
US7338526 Active Implants Corporation Amiram Steinberg Mar 2008
US7618459 Infinity Orthopedics Ltd. Daniel F. Justin et al. Nov 2009
US6447544 Gary Karlin Michelson Sep 2002
US6770096 Spinevision S.A. Ciaran Bolger et al. Aug 2004
US6719794 Synthes (U.S.A.) David Gerber et al. Apr 2004
US7226483 Synthes (U.S.A.) David Gerber et al. Jun 2007
US7192447 Synthes (USA) William S. Rhoda Mar 2007
US7320707 St. Francis Medical Technologies, Inc. James F. Zucherman et al. Jan 2008
US7452379 Kyphon SARL Steve Mitchell Nov 2008
US7497859 Kyphon SARL James F. Zucherman et al. Mar 2009
US7503933 Warsaw Orthopedic, Inc. Gary Karlin Michelson Mar 2009
US7235101 Warsaw Orthopedic, Inc. Bret M. Berry et al. Jun 2007
US7211112 Atlas Spine Bret O. Baynham et al. May 2007
US7497868 Active Implants Corporation Amiram Steinberg Mar 2009
US7520899 Kyphon SARL James F. Zucherman et al. Apr 2009
US6520991 Donald R. Huene Feb 2003
US6858029 Chung-Chun Yeh Feb 2005
US7070598 SDGI Holdings, Inc. Roy Lim et al. Jul 2006
US7431735 Sofamor S.N.C. Mingyan Liu et al. Oct 2008
US7481840 Kyphon Sarl James F. Zucherman et al. Jan 2009
US7575600 Kyphon SARL James F. Zucherman et al. Aug 2009
US7615077 Warsaw Orthopedic, Inc. Anthony J. Melkent et al. Nov 2009
US6436140 Sofamor S.N.C. Mingyan Liu et al. Aug 2002
US6966929 St. Francis Medical Technologies, Inc. Steve Mitchell Nov 2005
US7112222 Depuy Spine, Inc. Robert Fraser et al. Sep 2006
US7879095 Madhavan Pisharodi Feb 2011
US7879096 Warsaw Orthopedic, Inc. Andrew M. Dickson et al. Feb 2011
US7879099 Richard I. Zipnick Feb 2011
US7879104 Warsaw Orthopedic, Inc. Jonathan M. Dewey et al. Feb 2011
US7883542 Richard I. Zipnick Feb 2011
US7909872 Richard I. Zipnick et al. Mar 2011
US7901432 Kyphon SARL James F. Zucherman et al. Mar 2011
US7655043 Warsaw Orthopedic, Inc. Marc M. Peterman et al. Feb 2010
US7655042 Warsaw Orthopedic, Inc. Kevin Foley et al. Feb 2010
US7670377 Kyphon SARL James F. Zucherman et al. Mar 2010
US7682397 Warsaw Orthopedic, Inc. Bret M. Berry et al. Mar 2010
US7690381 DePuy Spine, Inc. Charles M. Bartish, Jr. et al. Apr 2010
US7691146 Kyphon SARL James F. Zucherman et al. Apr 2010
US7708776 NuVasive, Inc. Jason Daniel Blain et al. May 2010
US7708779 Warsaw Orthopedic, Inc. Jason A. Edie et al. May 2010
US7717959 Lytton William et al. May 2010
US7727280 McLuen Design, Inc. Gary R. McLuen Jun 2010
US7727279 Richard I. Zipnick et al. Jun 2010
US7731752 Warsaw Orthopedic, Inc. Jason A. Edie et al. Jun 2010
US7731751 Life Spine, Inc. Michael S. Butler et al. Jun 2010
US7749270 Warsaw Orthopedic, Inc. Marc M. Peterman Jul 2010
US7758648 Warsaw Orthopedic, Inc. David W. Castleman et al. Jul 2010
US7763028 Warsaw Orthopedic, Inc. Roy Lim et al. Jul 2010
US7776069 Kyphon SRL Jean Taylor Aug 2010
US7789914 Warsaw Orthopedic, Inc. Gary Karlin Michelson Sep 2010
US7794501 Wasaw Orthopedic, Inc. Jason A Edie et al. Sep 2010
US7803190 Kyphon SRL James F. Zucherman et al. Sep 2010
US7819903 DePuy Spine, Inc. Robert Fraser et al. Oct 2010
USD626233 Stryker Spine Robert Cipoletti et al. Oct 2010
US7828830 Lanx, Inc. Jeffery Thramann et al. Nov 2010
US7828849 Warsaw Orthopedic, Inc. Roy K Lim Nov 2010
US7837734 Warsaw Orthopedic, Inc. James F. Zucherman et al. Nov 2010
US7846186 Kyphon SRL Jean Taylor Dec 2010
US7850733 Atlas Spine, Inc. Bret O. Baynham et al. Dec 2010
US6648917 MedicineLodge, Inc. Daniel E. Gerbec et al. Nov 2003
US6432106 DePuy AcroMed, Inc. Robert Fraser Aug 2002

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