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US5964768: Tapered bone screw with continuously varying pitch

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Filing Information

Inventor(s) Randall J. Huebner ·
Assignee(s) Acumed, Inc. ·
Attorney/Agent(s) Kolisch, Hartwell, Dickinson, McCormack & Heuser ·
Primary Examiner Michael Buiz ·
Assistant Examiner Lien Ngo ·
Application Number US9034046
Filing date 03/03/1998
Issue date 10/12/1999
Predicted expiration date 01/21/2013
U.S. Classifications 606/73  · 606/72  ·
International Classifications A61B 1756  ·
Kind CodeA
International Classifications 60673;72;74;75;59-65;104;105 ·
Related U.S. Application DataCROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of U.S. patent application Ser. No. 08/781,571 filed Jan. 10, 1997, which is a continuation-in-part of U.S. patent application Ser. No. 08/506,469 filed Jul. 25, 1995, which is a continuation-in-part of U.S. patent application Ser. No. 08/332,445 filed Oct. 31, 1994, now U.S. Pat. No. 5,562,672 issued Oct. 8, 1996, which is a continuation of U.S. patent application Ser. No. 08/007,196, filed Jan. 21, 1993. U.S. patent application Ser. No. 08/506,469 is also a continuation-in-part of PCT Application Number PCT/US94/00738, filed Jan. 19, 1994, which claims priority from U.S. patent application Ser. No. 08/007,196, filed Jan. 21, 1993.
35 Claims, No Drawings


Abstract

A bone screw having a continuously varying pitch includes a tapered root portion having a relatively small diameter on a leading end of the screw and a larger trailing diameter. The pitch of the screw decreases between the leading and trailing ends thus causing the bone fragments in a fracture to be drawn together when the screw is installed across the fragments. The radially outer diameter of the threads increases between the leading and trailing ends thus causing each successive thread portion to cut into bone radially outwardly from the preceding thread portion thereby providing uncut bone in which the succeeding threads can gain purchase.

Independent Claims | See all claims (35)

  1. 1. A method of joining first and second objects, the method comprising:providing a headless screw having an elongate root portion, a leading end and a trailing end, the screw further having a screw thread formed over at least a portion of the root portion, the screw thread have a pitch measured between corresponding points on consecutive thread crests which is larger toward the leading end and smaller toward the trailing end, the screw thread further having a diameter which is larger toward the trailing end and smaller toward the leading end;introducing the leading end of the screw into the first object through a first surface of the first object;rotating the screw to drive the leading end of the screw forward through the first object and into the second object until the trailing end of the screw is disposed beneath the first surface of the first object with a portion of the screw thread being disposed in each object to thereby secure the two objects together.
  2. 3. A method of urging first and second objects toward each other, the method comprising:providing a screw having an elongate root portion, a leading end and a trailing end, the screw further having a screw thread formed over at least a portion of the root portion, the screw thread having a pitch measured between corresponding points on consecutive thread crests which is larger toward the leading end and smaller toward the trailing end, wherein the pitch varies substantially continuously over at least a portion of the thread, the screw thread further having a diameter which is larger near the trailing end and smaller near the leading end;introducing the leading end of the screw into the first object through a first surface of the first object;driving the leading end of the screw forward through the first object and into the second object until the portion of thread having substantially continuously varying pitch is disposed a partially in the first object and partially in the second object.
  3. 6. A method of urging first and second objects toward each other, the method comprising:providing a screw having an elongate root portion, a leading end and a trailing end, the screw further having a screw thread formed over at least part of the root portion and having a pitch measured between corresponding points on consecutive thread crests;introducing the leading end of the screw into the first object through a first surface of the first object;driving the leading end of the screw forward through the first object and into the second object until a leading portion of the screw thread is disposed in the second object and a trailing portion of the screw thread is disposed in the first object, where the pitch of the screw thread is larger toward the leading end and smaller toward the trailing end and the diameter of the screw thread varies in each portion and is smaller toward the leading end and larger toward the trailing end.
  4. 8. A method of urging first and second objects toward each other, the method comprising:providing a screw having an elongate root portion, a leading end and a trailing end, the screw further having a screw thread formed over at least part of the root portion, the screw thread having a pitch measured between corresponding points on consecutive thread crests which is larger toward the leading end and smaller toward the trailing end and a diameter which is smaller toward the leading end and larger toward the trailing end, at least along a first portion of the screw the pitch gradually increases as the diameter gradually decreases;introducing the leading end of the screw into the first object;driving the leading end of the screw forward through the first object and into the second object until the leading end of the screw is disposed in the second object and first portion spans a junction between the first and second objects and with part of the first portion of the screw disposed in each object.
  5. 12. A method of drawing together first and second bone portions, the method comprising:boring a hole into both bone portions, where the hole extends through the first bone portion, across a junction between the bone portions and into the second bone portion;inserting a leading end of a screw into the hole in the first bone portion, where the screw has a pitch measured between corresponding points on consecutive crests of the thread that is larger near the leading end and smaller near the trailing end and which changes substantially continuously over at least a portion of the screw; andscrewing the screw into the hole until the portion of the screw with substantially continuously changing pitch is disposed across the junction between the bone portions with a portion of the screw thread being disposed in each object to thereby secure the two objects together.
  6. 22. A method for drawing together first and second bone portions, said method comprising:using a drill bit to bore a hole into both bone portions with a central portion of the hole having both bone portions disposed thereacross;inserting the nose of a screw into the hole, said screw having a thread pitch measured between substantially all corresponding points of consecutive threads which decreases continuously from a leading end to a trailing end of the screw and a root portion having a substantially constant tapered surface which increases continuously from the leading end to the trailing end;screwing the screw into the hole; andcontinuing screwing until all of the screw is received within the bore.
  7. 28. A method for using a screw having a thread pitch measured between substantially all corresponding points of consecutive threads which decreases continuously from a leading end to a trailing end of the screw, said method comprising the steps of:boring axial holes into first and second bone portions;inserting the nose of the screw into an end of one of the holes;screwing the screw into the holes; andstopping screwing when the thread is received in both holes.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US65651 Davies Jun 1867
US146023 Russell Dec 1873
US197467 Harvey Nov 1877
US197933 Harvey Dec 1877
USD356868 Broberg et al. Mar 1995
US1980093 HEYMAN ROSENBERG Rosenberg Nov 1934
US2146023 MINER INC W H Russell Dec 1939
US2165149 ILLINOIS TOOL WORKS Olson Jul 1939
US2356098 CASPAR STEINLE LEO Steinle et al. Aug 1944
US2377405 DAVIES MICHAEL L Davies Jun 1945
US2382019 AUGUST MILLER EDWIN Miller Aug 1945
US2383231 COVEY ANDERTON EDWARD Anderton Aug 1945
US2419555 FATOR CHARLES D Fator Apr 1947
US2633091 WENGER JOSEPH W Wenger et al. Mar 1953
US2801631 JOHN CHARNLEY Charnley Aug 1957
US2842180 SET SCREW & MFG COMPANY Brown et al. Jul 1958
US3051169 STILLE WERNER AB Grath Aug 1962
US3079181 SHELL OIL CO van der Wissel Feb 1963
US3124408 Oestereicher Mar 1964
US3233500 AMERICAN FASTENER CORP de Vellier Feb 1966
US3454070 Phipard, Jr. Jul 1969
US3664540 NAT FORGE CO Witkin May 1972
US3799229 KEYSTONE CONSOLIDATED IND INC Johnson Mar 1974
US3915162 MILLER PETER S Miller Oct 1975
US4058856 Sulzer Brothers Limited Doerre et al. Nov 1977
US4059102 National Research Development Corporation Devas Nov 1977
US4069980 Chemetron Corporation Yarem et al. Jan 1978
US4175555 Interfix Limited Herbert Nov 1979
US4340184 Poss Design Limited Poss Jul 1982
US4456005 LICHTY TERRY K Lichty Jun 1984
US4463753 GUSTILO RAMON B Gustilo Aug 1984
US4468200 Feldmuhle Aktiengesellschaft Munch Aug 1984
US4537185 Denis P. Stednitz Stednitz Aug 1985
US4640271 Zimmer, Inc. Lower Feb 1987
US4723541 REESE HEWITT W Reese Feb 1988
US4842464 Mark Hattan Green Jun 1989
US4854311 Acro Med Corporation Steffee Aug 1989
US4863383 GRAFELMANN HANS L Grafelmann Sep 1989
US4892429 GIANNUZZI LOUIS Giannuzzi Jan 1990
US4917554 Cryotherm Limited Bronn Apr 1990
US4940467 TRONZO RAYMOND G Tronzo Jul 1990
US4950270 Boehringer Mannheim Corporation Bowman et al. Aug 1990
US4959064 Boehringer Mannheim Corporation Engelhardt Sep 1990
US5019078 Synthes (U.S.A.) Perren et al. May 1991
US5019079 Zimmer, Inc. Ross May 1991
US5042982 HARMS JUERGEN Harms et al. Aug 1991
US5120171 Stuart Surgical Lasner Jun 1992
US5147363 HAERLE ANTON Harle Sep 1992
US5180382 Synthes (U.S.A.) Frigg et al. Jan 1993
US5252016 Isolink Inc. Schmid et al. Oct 1993
US5259398 VRESPA GIUSEPPE Vrespa Nov 1993
US5300076 Societe de Fabrication de Materiel Orthopedique-Sofamore Leriche Apr 1994
US5306275 BRYAN DONALD W Bryan Apr 1994
US5403136 Synthes (U.S.A.) Mathys Apr 1995
US5470334 Linvatec Corporation Ross et al. Nov 1995
US5484440 Zimmer, Inc. Allard Jan 1996
US5536127 Pennig Jul 1996
US5569252 Justin et al. Oct 1996
US5571139 Jenkins, Jr. Nov 1996
US5730744 Justin et al. Mar 1998
US5743912 Biomat Lahille et al. Apr 1998
US5779704 Kim Jul 1998

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
CA731381FISCHER ARTURApr 1966
CA1007493WAGNER JOHN BMar 1977
EP0172130MECRON MEDIZINISCHE PRODUKTE GMBHFeb 1986
FR2588332BOSCH SIEMENS HAUSGERAETEJan 2000
DE2618344DOWNS SURGICAL LTDJan 2000
DE3215228KELLERMANN FA RUDOLFNov 1983
DE3630863MECRON MED PROD GMBHMar 1988
DE4021550CINCINNATI MILACRON AUSTRIAJan 1991
IT365613Jan 2000
IT598490Jan 2000
JP4524729Jan 2000
CH77837KELLENBERGER ALBERTJan 2000
SU178877Jan 2000
SU1216466ZUBKOV VLADIMIR SJan 2000
SU1034734TSNII TRAVMATOLOGII ORTOPEDIIAug 1983
GB1389427GALLUCCIO DNov 1972
WO19899030Jan 2000
WO20WO9002526Mar 1990
WO20WO9300518Jan 1993

Other Publications

The Herbert.TM. Bone Screws for Small Bone Fractures, Fracture Management, 97-1152-01 12.5MI Printed in U.S.A..COPYRGT. 1992 Zimmer, Inc.
Toby et al., "A Comparison of Fixation Screws for the Scaphoid During Application of Cyclical Bending Loads," Journal of Bone and Joint Surgery, vol. 79-A, No. 8, pp. 1190-1197, Aug. 1997.
Haddad et al., "Acute Percutaneous Scaphoid Fixation," The Journal of Bone and Joint Surgery, vol. 80-B, No. 1, pp. 95-99, Jan. 1998.
Wheeler et al., "Biomechanical Assessment of Compression Screws," Clinical Orthopaedics and Related Research, No. 350, pp. 237-245, May 1998.

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
AU2003202079 TYCO ELECTRONICS LTD UK BARNETT GARY Sep 2003
US6330903 Steve Weinreich Dec 2001
EP1328196 Tyco Healthcare Group LP Christopher J. CRISCUOLO et al. Jun 2011
EP1302180 HS West Investments, LLC West, Hugh S., Jr., M.D. Apr 2003
EP1472465 Tyco Electronics UK Limited Gary BARNETT Dec 2007
EP2564799 --
US7214108 Tyco Electronics UK Limited Gary Barnett May 2007
US7578836 Depuy Mitek Daniel F. Justin et al. Aug 2009
US7604641 Arthrosurface Incorporated Steven J. Tallarida et al. Oct 2009
US6989014 Ethicon, Inc. Daniel F. Justin et al. Jan 2006
US6527777 Ethicon, Inc. Daniel F. Justin Mar 2003
US6520964 STD Manufacturing, Inc. Steven J. Tallarida et al. Feb 2003
US6565573 Smith & Nephew, Inc. Joseph Ferrante et al. May 2003
US7235078 HS West Investments LLC Hugh S. West, Jr. Jun 2007
US7235079 Acumed LLC David G. Jensen et al. Jun 2007
US6423067 Theken Surgical LLC Lukas G. Eisermann Jul 2002
US6743233 Orthopaedic Biosystems, Ltd., Inc. Jeffrey P. Baldwin et al. Jun 2004
US6811552 DePuy France Lowell Scott Weil, Sr. et al. Nov 2004
US7510558 ArthroSurface, Inc. Steven J. Tallarida et al. Mar 2009
US6454506 Hilti Aktiengesellschaft Kai-Uwe Keller et al. Sep 2002
US6468277 Ethicon, Inc. Daniel F. Justin et al. Oct 2002
US7618462 Arthrosurface Incorporated Steven W. Ek Nov 2009
US6503252 Henrik Hansson Jan 2003
US7517350 OrthoPediatrics Corp. Lon S. Weiner et al. Apr 2009
US7582107 Integra Lifesciences Corporation Ian A. Trail et al. Sep 2009
US7901408 Arthrosurface, Inc. Steven W. Ek et al. Mar 2011
US7896883 Arthrosurface, Inc. Steven W. Ek et al. Mar 2011
US7896885 Arthrosurface Inc. Anthony Miniaci et al. Mar 2011
US7641677 OrthoPediatrics Corp. Lon S. Weiner et al. Jan 2010
US7678151 Steven W. Ek Mar 2010
US7713305 ArthroSurface, Inc. Steven W. Ek May 2010
US7736380 Rhausler, Inc. Terry Johnston et al. Jun 2010
US7753631 Nobuyuki Sugimura Jul 2010
US7766911 Theken Spine, LLC Richard R. Navarro et al. Aug 2010
US7780666 Theken Spine, LLC Richard R. Navarro et al. Aug 2010
US7785327 Theken Spine, LLC Richard R. Navarro et al. Aug 2010
US7799062 Stryker Trauma S.A. Yves Crozet Sep 2010
US7828853 Arthrosurface, Inc. Steven W. Ek et al. Nov 2010
US7857817 Arthrosurface Inc. Steven J. Tallarida et al. Dec 2010
US6953463 HS West Investments, LLc Hugh S. West, Jr. Oct 2005
US6398786 Nenad Sesic Jun 2002
US7914545 Arthrosurface, Inc Steven W. Ek Mar 2011
US7951163 Arthrosurface, Inc. Steven W. Ek May 2011
US8034076 Tyco Healthcare Group LP Christopher J. Criscuolo et al. Oct 2011
US8092505 Acumed LLC Mark B. Sommers Jan 2012
US8075604 Warsaw Orthopedic, Inc. Francis Denis et al. Dec 2011
US8070786 Acumed LLC Randall J. Huebner et al. Dec 2011
US8114101 Tyco Healthcare Group LP Christopher J. Criscuolo et al. Feb 2012
US8211108 Anthem Orthopaedics LLC Amir M. Matityahu Jul 2012
US8147559 Arthrosurface Incorporated Steven J. Tallarida et al. Apr 2012
US8177841 Arthrosurface Inc. Steven W. Ek May 2012
US8197511 M. Todd Miller et al. Jun 2012
US8147531 Tornier, Inc. Ernie Corrao et al. Apr 2012
US8540755 --
US8540717 --
US8523872 --
US8357162 --
US8361159 --
US8388624 --
US8439946 --
US8454618 --
US8556902 --
US8491302 --
US8585744 --
US8597311 --
US8628581 --
US8632568 --
US8663230 --
US8668725 --
US8740912 --
US8728102 --
US8721693 --
US8753396 --