WO2006072284A1 - Raccord a vis variable et a angle stable destine a l'osteosynthese - Google Patents

Raccord a vis variable et a angle stable destine a l'osteosynthese Download PDF

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Publication number
WO2006072284A1
WO2006072284A1 PCT/EP2005/012551 EP2005012551W WO2006072284A1 WO 2006072284 A1 WO2006072284 A1 WO 2006072284A1 EP 2005012551 W EP2005012551 W EP 2005012551W WO 2006072284 A1 WO2006072284 A1 WO 2006072284A1
Authority
WO
WIPO (PCT)
Prior art keywords
slot
screw
screw connection
shaped openings
ring
Prior art date
Application number
PCT/EP2005/012551
Other languages
German (de)
English (en)
Inventor
Arnd Ehrhardt
Ulrich Finger
Frank 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
Priority to EP05809939A priority Critical patent/EP1830725A1/fr
Publication of WO2006072284A1 publication Critical patent/WO2006072284A1/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 variably angularly stable screw connection for osteosynthesis, comprising a screw with a screw head, which has a conical thread over at least one longitudinal section, an insert ball head ring, which has one or more slot-shaped openings, an implant plate with at least one bore, which has an outer shape of the insert ball head ring has a complementary shape, wherein the insert ball head ring is frictionally fixable in the plate via the screw head, according to the preamble of patent claim 1.
  • a screw connection for osteosynthesis, in particular for fastening a tibial head plate, is previously known from German Utility Model DE 200 22 673 U1.
  • the local screw connection comprises a screw whose head has a substantially conical section in the longitudinal direction. Furthermore, a ring is provided, the outer surface has a spherical or spherical segment shape and is open at one point or severed.
  • an implant plate which comprises a bearing in the form of a bore and a bearing ring mounted therein for supporting the ring, wherein the inner surface of the bearing ring has a complementary shape to the outer surface of the ring, so that the ring arranged in the bearing ring is pivotable like a ball joint ,
  • the ring is spread by the conical portion of the screw, whereby the outer surface of the ring can be pressed against the inner surface of the bearing ring, so that the angular position of the screw can be set virtually arbitrary relative to the implant.
  • the local spreader for the screw thus has a spherical or spherical segment-shaped outer surface and an internal thread into which the provided with a corresponding conical external thread screw heads can be screwed. If the thread is tapered, then when tightening a stretching of the expanding ring with circumferential extension occurs.
  • the expansion ring according to the above explanation is movably guided in the bearing ring, wherein the bearing ring in turn is fixedly mounted in the bore of the implant or an implant plate by clamping, welding, soldering, pressing or embedding.
  • Spreader and screw act together with the presented bearing ring like a ball joint, which is determined by the conical section.
  • the screw can thus, as already briefly explained, be screwed at different angles in the bone, wherein the angle is freely adjustable within predetermined limits due to the ball joint.
  • an object of the invention to provide an advanced variable angularly stable screw for osteosynthesis, comprising a screw with a screw head, which has at least over a longitudinal section a conical thread to specify, the screw requires less parts, allows for easier production and ultimately helps to reduce the amount of otherwise necessary storage of plates and screws for the respective applications.
  • variable angle stable screw for osteosynthesis according to feature combination according to claim 1, wherein the dependent claims include at least expedient refinements and developments.
  • a conical thread complementary to the thread of the screw head is formed in the insert ball head ring, wherein a plurality of circumferentially spaced slot-like openings are provided in this ring, which extend in the longitudinal direction of the conical thread. debohrung, which is located in the head ring, run, the slit in the longitudinal axis is partially or completely executed.
  • the spherical or ball-shaped bore or the amount of holes in the implant plate on the upper, bone-distant side on a conical lowering portion Furthermore, the spherical or ball-shaped bore or the amount of holes in the implant plate on the upper, bone-distant side on a conical lowering portion.
  • the insert ball head ring can be inserted under bias in the respective bore of the plate and pre-fixed there.
  • a very uniform force distribution when screwing in the associated screw is given with a conical head, so that a total of a very secure, non-positive connection between the ku- gelkopf with screwed screw and the plate in the selected angular position is possible.
  • the slot-shaped openings are formed opposite one another in pairs according to an embodiment of the invention in the insert ball head ring.
  • the slotting takes place wholly or partly in the longitudinal axis in any direction both from left to right and vice versa.
  • an opposite pair of slot-shaped openings for bone distant and another pair is oriented to the bone near the plate side. This orientation refers to the open side of the slots.
  • the slot-shaped openings are mutually parallel in the insert ball head ring introduced.
  • the number of slot-shaped openings is three to eight, here again preferably four.
  • the slot width of the openings is in the range between 0.3 mm and 1.0 mm, preferably between 0.4 mm and 0.6 mm.
  • the length of the slot-shaped openings extends substantially over 70% to 80% of the height of the insert ball head rings.
  • FIG. 1 shows a plan view and a sectional view through the insert ball head ring according to the invention
  • Fig. 2 is a plan view and a sectional view of holes in the osteosynthesis plate with recognizable complementary shape with respect to the kugelkopfrings and formed on the bone distant side conical countersinking section and Fig. 3 is a sectional view of a used in a corresponding bore of an implant plate kugelkopfrings with indicated pivotability (arrow).
  • the insert ball head ring for the formation of a variable angle stable screw connection has a spherical or spherical shape 1 with respect to its outer shape. Distributed on the circumferential side in the insert ball head ring in pairs spaced slot-shaped openings 2 are introduced, the pairwise opposite openings 2 are once oriented towards the bone and on the other bone-side plate side, as shown in FIG. 1, left part of the picture, recognize.
  • the insert ball head ring has a tapered thread 3 which is complementary in both taper and pitch to threads of a bone screw with a corresponding conical screw head (not shown).
  • the implant plate 4 has a number of holes 5, wherein those holes which are used for variable angularly stable screw, have a shape according to cross-sectional view of FIG. 2.
  • the respective bore 5 is designed in the form of a spherical head 6 in the predominant region, with a conical countersunk section 7 being present on the upper, bone-distant side.
  • the conical countersunk portion 7 in this case allows extreme lateral angular positions without the screw, not shown in FIG. 3, respectively, of the screw head coming into abutment with the respective plate edge, which would otherwise result in a restriction of the swivel angle.
  • replaceable insert ball head rings 8 the same outer dimensions, but have adapted to different screw heads internal thread. In this way, it is possible to simplify the storage and reduce the costs of manufacturing, distribution and the use of implant plates with associated screws for producing corresponding screw.
  • the implant plate is made of titanium or implant steel
  • the insert ball head ring is made of a plastic material.

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)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne des raccords à vis variable et à angle stable destinés à l'ostéosynthèse. Ce raccord à vis comprend une vis dotée d'une tête qui présente un filet conique sur au moins une section longitudinale, une bague à tête sphérique d'insertion qui possède au moins un orifice en forme de fente, une plaque d'implant pourvue d'au moins un orifice qui a une forme complémentaire à la forme externe de la bague à tête sphérique d'insertion. La bague peut être fixée par liaison de forme dans la plaque par la tête de vis. Selon l'invention, la bague à tête sphérique d'insertion a un filet conique continu complémentaire au filet de la tête de vis. Plusieurs orifices en forme de fentes et espacés sur la circonférence s'étendent dans la direction longitudinale de l'orifice à filet conique. En outre, l'orifice sphérique ou en forme de tête sphérique présente dans la plaque d'implant sur la face supérieure éloignée de l'os une section inclinée conique de manière à obtenir un réglage d'angle maximal.
PCT/EP2005/012551 2004-12-30 2005-11-23 Raccord a vis variable et a angle stable destine a l'osteosynthese WO2006072284A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05809939A EP1830725A1 (fr) 2004-12-30 2005-11-23 Raccord a vis variable et a angle stable destine a l'osteosynthese

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004063597 2004-12-30
DE102004063597.8 2004-12-30
DE102005015597A DE102005015597A1 (de) 2004-12-30 2005-04-05 Variabel winkelstabile Schraubenverbindung für die Osteosynthese
DE102005015597.9 2005-04-05

Publications (1)

Publication Number Publication Date
WO2006072284A1 true WO2006072284A1 (fr) 2006-07-13

Family

ID=35781254

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/012551 WO2006072284A1 (fr) 2004-12-30 2005-11-23 Raccord a vis variable et a angle stable destine a l'osteosynthese

Country Status (3)

Country Link
EP (1) EP1830725A1 (fr)
DE (1) DE102005015597A1 (fr)
WO (1) WO2006072284A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7828829B2 (en) 2006-03-22 2010-11-09 Pioneer Surgical Technology Inc. Low top bone fixation system and method for using the same
US8398683B2 (en) 2007-10-23 2013-03-19 Pioneer Surgical Technology, Inc. Rod coupling assembly and methods for bone fixation
US8506601B2 (en) 2008-10-14 2013-08-13 Pioneer Surgical Technology, Inc. Low profile dual locking fixation system and offset anchor member
US8636778B2 (en) 2009-02-11 2014-01-28 Pioneer Surgical Technology, Inc. Wide angulation coupling members for bone fixation system
USD734853S1 (en) 2009-10-14 2015-07-21 Nuvasive, Inc. Bone plate
US9339315B2 (en) 2010-03-08 2016-05-17 Stryker European Holdings I, Llc Bone fixation system with curved profile threads
US9615866B1 (en) 2004-10-18 2017-04-11 Nuvasive, Inc. Surgical fixation system and related methods

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038949B4 (de) 2010-08-05 2018-01-04 Dieter Marquardt Medizintechnik Gmbh Osteosynthesevorrichtung
DE102010042930A1 (de) 2010-10-26 2012-04-26 Dieter Marquardt Medizintechnik Gmbh Osteosynthesevorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5954722A (en) * 1997-07-29 1999-09-21 Depuy Acromed, Inc. Polyaxial locking plate
US6030389A (en) * 1997-08-04 2000-02-29 Spinal Concepts, Inc. System and method for stabilizing the human spine with a bone plate
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
EP1250892A2 (fr) * 2001-04-20 2002-10-23 Depuy Orthopaedics, Inc. Plaque polyaxiale verrouillable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH645264A5 (de) * 1980-05-28 1984-09-28 Straumann Inst Ag Einrichtung mit einer platte und zu deren befestigung an einem knochen dienenden schrauben.
DE20022673U1 (de) * 2000-03-02 2002-02-28 Med Medical Engineering Dev Lt Schraubverbindung für die Osteosynthese

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5954722A (en) * 1997-07-29 1999-09-21 Depuy Acromed, Inc. Polyaxial locking plate
US6030389A (en) * 1997-08-04 2000-02-29 Spinal Concepts, Inc. System and method for stabilizing the human spine with a bone plate
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
EP1250892A2 (fr) * 2001-04-20 2002-10-23 Depuy Orthopaedics, Inc. Plaque polyaxiale verrouillable

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9615866B1 (en) 2004-10-18 2017-04-11 Nuvasive, Inc. Surgical fixation system and related methods
US7828829B2 (en) 2006-03-22 2010-11-09 Pioneer Surgical Technology Inc. Low top bone fixation system and method for using the same
US8398683B2 (en) 2007-10-23 2013-03-19 Pioneer Surgical Technology, Inc. Rod coupling assembly and methods for bone fixation
US8506601B2 (en) 2008-10-14 2013-08-13 Pioneer Surgical Technology, Inc. Low profile dual locking fixation system and offset anchor member
US8636778B2 (en) 2009-02-11 2014-01-28 Pioneer Surgical Technology, Inc. Wide angulation coupling members for bone fixation system
USD734853S1 (en) 2009-10-14 2015-07-21 Nuvasive, Inc. Bone plate
USD754857S1 (en) 2009-10-14 2016-04-26 Nuvasive, Inc. Bone plate
US9339315B2 (en) 2010-03-08 2016-05-17 Stryker European Holdings I, Llc Bone fixation system with curved profile threads

Also Published As

Publication number Publication date
DE102005015597A1 (de) 2006-09-21
EP1830725A1 (fr) 2007-09-12

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