EP1274356A1 - Dispositif pour fixer des implants sur un os ou dans un os - Google Patents

Dispositif pour fixer des implants sur un os ou dans un os

Info

Publication number
EP1274356A1
EP1274356A1 EP00915087A EP00915087A EP1274356A1 EP 1274356 A1 EP1274356 A1 EP 1274356A1 EP 00915087 A EP00915087 A EP 00915087A EP 00915087 A EP00915087 A EP 00915087A EP 1274356 A1 EP1274356 A1 EP 1274356A1
Authority
EP
European Patent Office
Prior art keywords
longitudinal axis
core
ratio
bone
profile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00915087A
Other languages
German (de)
English (en)
Inventor
Jörg GOLDHAHN
Reto Frei
Jörn SEEBECK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Synthes GmbH
Original Assignee
Synthes GmbH
Synthes AG Chur
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Synthes GmbH, Synthes AG Chur filed Critical Synthes GmbH
Publication of EP1274356A1 publication Critical patent/EP1274356A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated

Definitions

  • the invention relates to a device for fixing implants on or in a bone according to the preamble of patent claim 1.
  • implants have generally been anchored in the bone with a screw - recently also monocortical, anchored screws. These have been constructed in terms of their shape for healthy bones. There is an optimal ratio between the cortex screws and the cortex thickness for the transmission of the loads that occur. These angle-stable screws no longer work in the classic sense of a lag screw, but as bolts. So far, however, the screw dimensions - optimized for healthy bones - have been used. As a result, the angle-stable screws used, whose ratio of core and outer diameter has been reduced, have lower pull-out forces and failure loads.
  • the invention seeks to remedy this.
  • the object of the invention is to create a larger bone implant surface with less implant volume and to produce a considerably larger projection area in the main loading directions.
  • the invention achieves the stated object with a device which has the features of claim 1.
  • a cutout (bore) in the cross section profile of the device according to the invention can be used Base body of a bone plate an angle-stable anchoring of the device in the bone plate can be achieved.
  • the greater bending and torsional rigidity is achieved by peripheral thickening of the wings of the device according to the invention, with the same or smaller implant volume, the same material and with a considerably larger projection area in the axial direction.
  • the profile is twisted spirally, preferably by 100-140 ° over a length of 8-12 mm, which counteracts axial tearing.
  • the implant (bone plate) receiving the profile of the device has a recess corresponding to the profile thickening, which shape prevents the profile from moving inwards (in the direction of the bone).
  • a locking mechanism secures the profile of the device against loosening from the receiving point and absorbs forces in the longitudinal axis of the profile. This can be achieved by known positive or non-positive, releasable rotating, sliding or click mechanisms.
  • FIG. 2 shows a cross section through a four-wing profile in an x / y coordinate system and formulas for different moments of inertia
  • 3 - 5 Variants of the cross-sectional profile of the device according to the invention.
  • 6 shows a perspective illustration of a device according to the invention inserted into a bone plate;
  • FIG. 7 shows a perspective partial sectional illustration of a device according to the invention inserted into a bone plate.
  • the schematic profile of the device according to the invention shown in FIG. 1 essentially consists of a hollow core 1 with the longitudinal axis 2 (perpendicular to the drawing surface) from which radially three wings 3 with peripheral thickenings 5 arise.
  • the diameter d of the core bore 9 of the core 1 is preferably 2 mm, while the value S has a value of 3 to 50 mm, preferably 5 to 30 mm.
  • this ratio is A a / A, 3.0: 1 to 3.5: 1.
  • FIGS. 3 to 5 show further variants of the cross-sectional profile with thickenings 5.
  • FIGS. 3 and 4 show further 4-wing profiles while a 6-wing profile is shown in FIG.
  • the thickenings 5 are not circular cylindrical, but as an ellipsoidal cylinder.
  • FIG. 4 shows a profile similar to FIG. 3, but not point-symmetrical. Additional profiles can be used depending on the area of application, provided they comply with the geometric conditions specified above.
  • FIG. 6 shows a device 10 according to the invention with a twisted profile, consisting of core 1 and wing 3 in the form of a bone screw, which is inserted into a bone plate 20 with a plurality of plate holes 21.
  • the device 10 has a head 22 at one of its ends, which fits into the plate hole 21.
  • the head 22 also has a hexagon socket 23 which can accommodate a corresponding hexagon screwdriver in order to be able to screw the device 10 into the bone.
  • FIG. 7 shows the same device 10 as in FIG. 6, which is inserted into a bone plate 20 which does not have circular-cylindrical plate holes, as shown in FIG. 6, but rather specially shaped passage openings 24 corresponding to the cross-sectional profile of the device 10 having.
  • the three-beam passage opening 24 is recessed in the surface 25 of the bone plate 20, so that the head 22 of the device 10 can be completely immersed in the circular-cylindrical recess 26 of the bone plate 20 without the head 22 above the surface 25 protrudes. This results in a positive connection between the device 10 and the bone plate 20.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

Le dispositif (10) est utilisé pour fixer des implants sur un os, ou dans un os. Le dispositif selon l'invention comprend un noyau longitudinal, plein ou creux (1) ayant un axe longitudinal (2) et une pluralité d'ailettes (3) s'étendant radialement à partir de ce noyau. Le dispositif se situe dans une enveloppe formée par un cylindre rectiligne de base circulaire de diamètre extérieur D = 2S + d et de même axe longitudinal (2), d correspondant au diamètre d'un trou éventuel (9) dans le noyau (1), et S ayant une valeur comprise entre 3 et 50 mm. Dans un plan (6) orthogonal à l'axe longitudinal (2), le rapport Aa/AI entre la portion de surface extérieure Aa se situant dans l'anneau de cercle (7), en tant que différence des cercles qui sont concentriques à l'axe longitudinal (2), de diamètres D = 2S + d et dI = S + d, et la portion de surface intérieure AI de la surface transversale A = Aa + AI de l'implant dans la partie de transmission de force du profil, en tant que différence entre les cercles qui sont concentriques à l'axe longitudinal (2) de diamètres dI et d, par rapport à l'axe longitudinal (2) du dispositif, s'élève au moins à 3 :1. Le dispositif selon l'invention permet de minimiser les dommages du périoste et de la structure spongieuse et d'obtenir un meilleur ancrage de l'implant dans l'os.
EP00915087A 2000-04-20 2000-04-20 Dispositif pour fixer des implants sur un os ou dans un os Withdrawn EP1274356A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2000/000229 WO2001080754A1 (fr) 2000-04-20 2000-04-20 Dispositif pour fixer des implants sur un os ou dans un os

Publications (1)

Publication Number Publication Date
EP1274356A1 true EP1274356A1 (fr) 2003-01-15

Family

ID=4358069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00915087A Withdrawn EP1274356A1 (fr) 2000-04-20 2000-04-20 Dispositif pour fixer des implants sur un os ou dans un os

Country Status (6)

Country Link
US (1) US6645212B2 (fr)
EP (1) EP1274356A1 (fr)
JP (1) JP2003530946A (fr)
AU (1) AU774360B2 (fr)
CA (1) CA2406670A1 (fr)
WO (1) WO2001080754A1 (fr)

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US7695502B2 (en) 2000-02-01 2010-04-13 Depuy Products, Inc. Bone stabilization system including plate having fixed-angle holes together with unidirectional locking screws and surgeon-directed locking screws
US6706046B2 (en) 2000-02-01 2004-03-16 Hand Innovations, Inc. Intramedullary fixation device for metaphyseal long bone fractures and methods of using the same
US7857838B2 (en) 2003-03-27 2010-12-28 Depuy Products, Inc. Anatomical distal radius fracture fixation plate
US20040153073A1 (en) 2000-02-01 2004-08-05 Hand Innovations, Inc. Orthopedic fixation system including plate element with threaded holes having divergent axes
US6767351B2 (en) 2000-02-01 2004-07-27 Hand Innovations, Inc. Fixation system with multidirectional stabilization pegs
US20040073216A1 (en) * 2000-10-05 2004-04-15 The Cleveland Clinic Foundation Apparatus and method for attaching adjacent bones
RU2194274C1 (ru) * 2001-09-18 2002-12-10 ЗАО "Нефтегазкомплектсервис" Способ внутритрубного ультразвукового контроля
AR038680A1 (es) 2002-02-19 2005-01-26 Synthes Ag Implante intervertebral
SE524413C2 (sv) * 2002-05-23 2004-08-03 Claes-Olof Stiernborg Geringsinstrument, exempelvis för hallux-kirurgi
US7780664B2 (en) 2002-12-10 2010-08-24 Depuy Products, Inc. Endosteal nail
US20040136811A1 (en) * 2003-01-09 2004-07-15 Tarlton Peter B. Extruded wire nail having locking channels
EP2335656B1 (fr) 2003-02-06 2012-09-05 Synthes GmbH Implant intervertébral
US7819903B2 (en) 2003-03-31 2010-10-26 Depuy Spine, Inc. Spinal fixation plate
US7905909B2 (en) 2005-09-19 2011-03-15 Depuy Products, Inc. Bone stabilization system including multi-directional threaded fixation element
US20100305704A1 (en) 2006-02-27 2010-12-02 Synthes Gmbh Intervertebral implant with fixation geometry
WO2008058403A1 (fr) * 2006-11-14 2008-05-22 Synthes Gmbh Dispositif de fixation de fragments d'articulation comportant du cartilage
US7722611B2 (en) * 2007-03-05 2010-05-25 Depuy Products, Inc. Method of treating a clavicle fracture
WO2009064644A1 (fr) 2007-11-16 2009-05-22 Synthes(U.S.A.) Implant intervertébral à profil bas
EP2352462B1 (fr) 2008-11-07 2017-03-29 Synthes GmbH Séparateur intervertébral sans profil et ensemble plaque couplé
CA2756748A1 (fr) * 2009-04-02 2010-10-07 Synthes Usa, Llc Moyens d'ancrage en spirale pour verrouillage
US9241809B2 (en) 2010-12-21 2016-01-26 DePuy Synthes Products, Inc. Intervertebral implants, systems, and methods of use
WO2012088238A2 (fr) 2010-12-21 2012-06-28 Synthes Usa, Llc Implants intervertébraux, systèmes et procédés d'utilisation
WO2015095126A1 (fr) * 2013-12-20 2015-06-25 Hartdegen Vernon Trou de blocage polyaxial
US10045803B2 (en) 2014-07-03 2018-08-14 Mayo Foundation For Medical Education And Research Sacroiliac joint fusion screw and method
JP2017529886A (ja) 2014-07-10 2017-10-12 クロスローズ エクストリミティ システムズ リミテッド ライアビリティ カンパニー 骨インプラントおよび挿入の手段
US11202626B2 (en) 2014-07-10 2021-12-21 Crossroads Extremity Systems, Llc Bone implant with means for multi directional force and means of insertion
US9867718B2 (en) 2014-10-22 2018-01-16 DePuy Synthes Products, Inc. Intervertebral implants, systems, and methods of use
EP3273889B1 (fr) * 2015-03-25 2020-12-02 Pier Giovanni Menci Clou intramédullaire pour le traitement des fractures d'os longs
CN110151291B (zh) 2015-07-13 2020-12-22 汇聚义肢系统有限责任公司 具有动态元件的骨板
US10413332B2 (en) 2016-04-25 2019-09-17 Imds Llc Joint fusion implant and methods
US10751071B2 (en) 2016-04-25 2020-08-25 Imds Llc Joint fusion instrumentation and methods
US11864753B2 (en) 2017-02-06 2024-01-09 Crossroads Extremity Systems, Llc Implant inserter
EP3579762B1 (fr) 2017-02-07 2024-06-26 Crossroads Extremity Systems, LLC Implant à contre-couple
DE102019000965B4 (de) * 2019-02-09 2020-12-24 Mimeo Medical Gmbh Knochenverankerungsvorrichtung für den Pedikelzugang
US12059183B2 (en) 2020-07-31 2024-08-13 Crossroads Extremity Systems, Llc Bone plates with dynamic elements and screws
USD961081S1 (en) 2020-11-18 2022-08-16 Crossroads Extremity Systems, Llc Orthopedic implant

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Also Published As

Publication number Publication date
WO2001080754A1 (fr) 2001-11-01
US6645212B2 (en) 2003-11-11
AU3652900A (en) 2001-11-07
JP2003530946A (ja) 2003-10-21
AU774360B2 (en) 2004-06-24
CA2406670A1 (fr) 2001-11-01
US20030083663A1 (en) 2003-05-01

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