WO2006103245A1 - Plaque pour gros fragment a adaptateur vissable - Google Patents

Plaque pour gros fragment a adaptateur vissable Download PDF

Info

Publication number
WO2006103245A1
WO2006103245A1 PCT/EP2006/061115 EP2006061115W WO2006103245A1 WO 2006103245 A1 WO2006103245 A1 WO 2006103245A1 EP 2006061115 W EP2006061115 W EP 2006061115W WO 2006103245 A1 WO2006103245 A1 WO 2006103245A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
adapter
fragment
fragment plate
stable
Prior art date
Application number
PCT/EP2006/061115
Other languages
German (de)
English (en)
Inventor
Frank Orschler
Erich Orschler
Original Assignee
Königsee Implantate und Instrumente zur Osteosynthese GmbH
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 Königsee Implantate und Instrumente zur Osteosynthese GmbH filed Critical Königsee Implantate und Instrumente zur Osteosynthese GmbH
Publication of WO2006103245A1 publication Critical patent/WO2006103245A1/fr

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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole

Definitions

  • the invention relates to a large fragment plate with at least one provided for receiving a large fragment screw fixed angular stable threaded hole.
  • Large-fragment plates are used for stabilizing bone fragments of a splinter fracture, in particular in the context of skull and jaw surgery, but also complicated fractures of the extremities.
  • One or more angle-stable threaded bores are used to fasten the large-fragment plate, in each of which a bone screw is screwed in and driven through the large-fragment plate into the bone.
  • the angle of the screw driven in against the normal direction of the plate is determined by the design of the thread pairing.
  • Such a fixed and predetermined angular position is disadvantageous as soon as the bone screw in an angle other than the predetermined angle is to be screwed into the bone fragment for operational reasons.
  • a different model of the bulk fragment plate has to be resorted to, or the use of the large fragment plate has to be referred to one or more variable-pitch, variable-pitch small-fragment plates. It will be understood that this will require either the provision of a larger number of large fragmentation plates or the benefits of using a large fragmentation plate.
  • the large fragment plate is characterized by a screw-in the angle-stable thread adapter for receiving a screw-in adapter small fragment screw with a variable angular stable position.
  • the adapter is introduced into the fixed angle-stable thread arranged in the large-fragment plate.
  • the small fragment screw is attached according to the required angular position of the adapter and screwed into this angle position in the adapter.
  • the KleinfragmentD screw then sits inside of the adapter angle stable.
  • their angular position can be chosen variably before screwing in a convenient manner.
  • an adapter Through the use of such an adapter, it is possible to use conventional large-fragment plates with fixed angle stable threads even where a variable angularly stable screw is required.
  • the adapter can be inserted and removed in a very simple manner if necessary in the fixed angle stable thread, without changing the structural design of the large fragment plate, in particular the design of the fixed angle stable thread.
  • the adapter is expediently in the form of a Einschraubringes with a suitable for the fixed angularly stable thread external thread and a screw hole with a tapered in a central portion cross-section.
  • the external thread serves to anchor the adapter in the fixed angle stable thread of the large fragment plate.
  • the screw-in bore has a shape similar to a rotational hyperboloid.
  • the small fragment screw is driven along the flanks of the Einschraubbohrung screwed through the screw in any angular position, the tapered shape of the screw hole ensures a secure angular stable hold and engagement of the small fragment screw.
  • the screw-in has further in the frontal region of the Einschraubringes one for engagement of a fastening tool, in particular a polygonal key, suitable cross-sectional shape.
  • a fastening tool in particular a polygonal key, suitable cross-sectional shape.
  • the corners of this polygonal shape, in particular a hexagonal shape, also provide Ansetzis for positioning the small fragment screws and prevent slipping of the screws when driving into the screw-in.
  • the adapter is expediently made of one for a cutting
  • Screwing the small fragment screw suitable material in particular a plastic material formed. This avoids excessive force exerted when driving in the screws and at the same time guarantees a secure hold of the screw.
  • a small fragment screw having an inner through hole for a guide and fastening means, in particular a drill wire or a guide wire.
  • a guide and fastening means in particular a drill wire or a guide wire.
  • further fastening elements can be driven in a corresponding angular position into the bone.
  • FIG. 1 is a plan view of the Einschraubringes of Fig. 1,
  • Fig. 3 is a representation of a screw-in section with a screwed small fragment screw.
  • Fig. 4 is a detail view of the external thread of the small fragment screw.
  • Fig. 1 shows a side view of the Einschraubringes 10 in partial section.
  • the screw-in ring has an external thread 20 which fits into a fixed angle-stable threaded bore which is introduced in a large-fragment plate. According to the usual configuration for such thread, the external thread may have a conical shape.
  • a screw-in bore 22 introduced in the interior of the EinD screw ring has a tapered cross-section in a middle section 23. The taper is given in the embodiment shown in Fig. 1 by a concave configuration of the screw-in.
  • the radius of curvature R of the inner wall of the screw-in bore is expediently dimensioned such that a small-dimensioned screw obliquely, i. can be screwed diagonally through the bore and the inner wall of the bore touches each at a first flank and an opposite flank.
  • the cross-section of the screw-in bore in the region of the narrowed central portion 23 may be designed so that the small fragmentary screw also vertical, i. along the symmetry axis can be screwed into the screw-in.
  • the design of the EinschraubDbohrung 22 thus allows both an oblique, as well as a vertical screwing the small fragment screw, the direction can be selected completely independent of the angular position of the thread in the large fragment plate.
  • Fig. 2 shows the embodiment shown in Fig. 1 in a plan view.
  • the contour 25 of the opening of the Einschraubloch has a series of AusbuchDtitch 26, which together give the shape of a hexagon.
  • the hexagon thus formed fulfills a dual function. On the one hand, it serves as an engagement for a hexagon Allen key for screwing in and loosening the screw-in ring into the threaded hole of the large-fragment plate.
  • the bulges 26 can be used as a guide for applying and screwing the small fragment screw.
  • the shape of the Allen wrench or the required azimuthal positions of the small fragment screw bulges may be provided which also form other shapes, in particular a triangular, square or the like polygonal, or a star shape.
  • the screw-in ring shown in Figures 1 and 2 consists of a material that allows a cutting screwing the small fragment screw.
  • the A- screw hole therefore has no preformed internal thread.
  • the screw-in is therefore made of a solid, but sufficiently soft material that shows no particular chip or burr formation when screwing in the small fragment screw and the small fragment screw surrounds sufficiently tight.
  • biologically well-tolerated and known in the medical prosthetic field plastics can be used for this purpose.
  • Fig. 3 shows the Einschraubring shown in Fig. 1 and 2 with a screwed-DE small screw 27 with a small fragment thread 28.
  • the thread teeth of the small fragment thread cut into the inner edges of the screw 22 a.
  • the small fragmentary screw 27 is clamped stable angle in the screw-in. Due to the rotational symmetry of the screw-in hole, the small-fragment screw can be variably screwed in at any azimuthal angle within the screw-in ring.
  • the size of the screw-in winch a depends on the dimensions of the screw-in bore and the respectively used small-diameter screw, in particular on its cross-sections or the size of the radius of curvature R and the material thickness of the screw-in ring.
  • the design of the external thread corresponds to the thread on the head part of the small fragment screw of a conventional large fragment screw countersunk into the large-scale fragment plate.
  • the flanks of the threads have a slightly asymmetrical shape.

Abstract

L'invention concerne une plaque pour gros fragment qui comprend au moins un alésage fileté fixe à angle stable pour la réception d'une vis pour gros fragment. Selon l'invention, un adaptateur (10) peut être vissé dans le filetage à angle stable et sert à recevoir, dans une position quelconque mais à angle stable, une vis pour petit fragment (27) vissable dans l'adaptateur. L'invention concerne en outre un adaptateur pour une plaque pour gros fragment qui présente un filetage extérieur (20) complémentaire au filetage intérieur d'au moins un alésage fileté situé dans la plaque pour gros fragment, ainsi qu'une ouverture de passage (22). Dans cet adaptateur se trouve une aide au montage de sorte que, après son montage dans l'alésage fileté de la plaque pour gros fragment, l'adaptateur peut recevoir de manière stable via l'ouverture de passage une vis filetée autotaraudeuse dans n'importe quelle position angulaire. A cet effet, l'adaptateur est fabriqué dans un matériau présentant des propriétés d'élasticité résiduelle, notamment en plastique.
PCT/EP2006/061115 2005-03-30 2006-03-28 Plaque pour gros fragment a adaptateur vissable WO2006103245A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005014546.9 2005-03-30
DE200510014546 DE102005014546B4 (de) 2005-03-30 2005-03-30 Großfragmentplatte und Adapter für eine Großfragmentplatte

Publications (1)

Publication Number Publication Date
WO2006103245A1 true WO2006103245A1 (fr) 2006-10-05

Family

ID=36587206

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/061115 WO2006103245A1 (fr) 2005-03-30 2006-03-28 Plaque pour gros fragment a adaptateur vissable

Country Status (2)

Country Link
DE (1) DE102005014546B4 (fr)
WO (1) WO2006103245A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2168513A1 (fr) * 2008-09-30 2010-03-31 S.I.M.E.O.N. Production GmbH Plaque d'ostéosynthèse
EP2453820A1 (fr) * 2009-07-15 2012-05-23 Orthohelix Surgical Designs, Inc. Système d'implants orthopédiques comprenant un mécanisme de blocage à axe variable
US9113970B2 (en) 2010-03-10 2015-08-25 Orthohelix Surgical Designs, Inc. System for achieving selectable fixation in an orthopedic plate
US9259255B2 (en) 2009-07-15 2016-02-16 Orthohelix Surgical Designs, Inc. Variable axis locking mechanism for use in orthopedic implants
US9962213B2 (en) 2010-07-07 2018-05-08 Orthohelix Surgical Designs, Inc. Variable angle depth limited fastener driver and variable angle fixation system for use in orthopedic plates

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013013138B4 (de) 2013-03-12 2018-08-23 Königsee Implantate GmbH Osteosyntesefixationseinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5364399A (en) * 1993-02-05 1994-11-15 Danek Medical, Inc. Anterior cervical plating system
FR2744011A1 (fr) * 1996-01-25 1997-08-01 Richard Rossin Dispositif d'osteosynthese du rachis
FR2790198A1 (fr) * 1999-02-26 2000-09-01 Numedic Dispositif de solidarisation d'une piece sur un support, tel qu'une plaque d'osteosynthese sur une masse osseuse
US6436100B1 (en) * 1998-08-07 2002-08-20 J. Lee Berger Cannulated internally threaded bone screw and reduction driver device
WO2004096067A2 (fr) * 2003-04-29 2004-11-11 Grampian University Hospitals Nhs Trust Appareil
US20040254579A1 (en) * 2003-03-20 2004-12-16 Stryker Trauma S.A. Bone connection device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5904683A (en) * 1998-07-10 1999-05-18 Sulzer Spine-Tech Inc. Anterior cervical vertebral stabilizing device
IL162232A0 (en) * 2001-12-24 2005-11-20 Synthes Ag Device for performing osteosynthesis
DE20321151U1 (de) * 2003-08-26 2006-09-07 Synthes Gmbh Knochenplatte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5364399A (en) * 1993-02-05 1994-11-15 Danek Medical, Inc. Anterior cervical plating system
FR2744011A1 (fr) * 1996-01-25 1997-08-01 Richard Rossin Dispositif d'osteosynthese du rachis
US6436100B1 (en) * 1998-08-07 2002-08-20 J. Lee Berger Cannulated internally threaded bone screw and reduction driver device
FR2790198A1 (fr) * 1999-02-26 2000-09-01 Numedic Dispositif de solidarisation d'une piece sur un support, tel qu'une plaque d'osteosynthese sur une masse osseuse
US20040254579A1 (en) * 2003-03-20 2004-12-16 Stryker Trauma S.A. Bone connection device
WO2004096067A2 (fr) * 2003-04-29 2004-11-11 Grampian University Hospitals Nhs Trust Appareil

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2168513A1 (fr) * 2008-09-30 2010-03-31 S.I.M.E.O.N. Production GmbH Plaque d'ostéosynthèse
EP2453820A1 (fr) * 2009-07-15 2012-05-23 Orthohelix Surgical Designs, Inc. Système d'implants orthopédiques comprenant un mécanisme de blocage à axe variable
EP2453820A4 (fr) * 2009-07-15 2014-08-06 Orthohelix Surgical Des Inc Système d'implants orthopédiques comprenant un mécanisme de blocage à axe variable
US9259255B2 (en) 2009-07-15 2016-02-16 Orthohelix Surgical Designs, Inc. Variable axis locking mechanism for use in orthopedic implants
US9730742B2 (en) 2009-07-15 2017-08-15 Orthohelix Surgical Designs, Inc. Variable axis locking mechanism for use in orthopedic implants
US9113970B2 (en) 2010-03-10 2015-08-25 Orthohelix Surgical Designs, Inc. System for achieving selectable fixation in an orthopedic plate
US20150351816A1 (en) * 2010-03-10 2015-12-10 Orthohelix Surgical Designs, Inc. System for achieving selectable fixation in an orthopedic plate
US10130403B2 (en) 2010-03-10 2018-11-20 Orthohelix Surgical Designs, Inc. System for achieving selectable fixation in an orthopedic plate
US10786288B2 (en) 2010-03-10 2020-09-29 Orthohelix Surgical Designs, Inc. System for achieving selectable fixation in an orthopedic plate
US9962213B2 (en) 2010-07-07 2018-05-08 Orthohelix Surgical Designs, Inc. Variable angle depth limited fastener driver and variable angle fixation system for use in orthopedic plates

Also Published As

Publication number Publication date
DE102005014546B4 (de) 2010-07-08
DE102005014546A1 (de) 2006-10-19

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