DE20307776U1 - Anchoring element for fastening a rod of a device for setting up a human or animal spine to a vertebral bone - Google Patents
Anchoring element for fastening a rod of a device for setting up a human or animal spine to a vertebral bone Download PDFInfo
- Publication number
- DE20307776U1 DE20307776U1 DE20307776U DE20307776U DE20307776U1 DE 20307776 U1 DE20307776 U1 DE 20307776U1 DE 20307776 U DE20307776 U DE 20307776U DE 20307776 U DE20307776 U DE 20307776U DE 20307776 U1 DE20307776 U1 DE 20307776U1
- Authority
- DE
- Germany
- Prior art keywords
- bearing
- rod
- screw
- grooves
- anchoring
- 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.)
- Expired - Lifetime
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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
-
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (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)
Abstract
Verankerungselement zur Befestigung eines Stabes einer Vorrichtung zum Einrichten einer menschlichen oder tierischen Wirbelsäule an einem Wirbelknochen, mit einem Schraubelement (16) und mit einem Halteelement (10), wobei das Schraubelement (16) ein kugelsegmentförmiges Lagerelement (20) und einen sich konisch verjüngenden Gewindeschaft (18) aufweist, und wobei das Halteelement (10) eine Halterung (12) zur Aufnahme des Stabes und eine Lagerschale (14) zur Aufnahme des Lagerelementes (20) des Schraubelementes (16) aufweist, dadurch gekennzeichnet, dass die Lagerschale (14) korrespondierend zum Lagerelement (20) ausgebildet ist, so dass das Lagerelement (20) direkt in der Lagerschale (14) lagerbar ist.anchoring element for fastening a rod of a device for setting up a human or animal spine on a vertebral bone, with a screw element (16) and with a holding element (10), wherein the screw element (16) is a spherical segment-shaped bearing element (20) and a tapered Has threaded shaft (18), and wherein the holding element (10) Bracket (12) for receiving the rod and a bearing shell (14) for receiving the bearing element (20) of the screw element (16), characterized in that the bearing shell (14) corresponds to the bearing element (20), so that the bearing element (20) can be stored directly in the bearing shell (14).
Description
Die vorliegende Erfindung betrifft ein Verankerungselement zur Befestigung eines Stabes einer Vorrichtung zum Einrichten einer menschlichen oder tierischen Wirbelsäule an einem Wirbelknochen, mit einem Schraub- und einem Halteelement, wobei das Schraubelement ein kugelsegmentförmiges Lagerelement und einen sich konisch verjüngenden Gewindeschaft aufweist, und wobei das Halteelement eine Halterung zur Aufnahme des Stabes und eine Lagerschale zur Aufnahme des Lagerelementes des Schraubelementes aufweist.The The present invention relates to an anchoring element for fastening a rod of a device for setting up a human or animal spine on a vertebral bone, with a screw and a holding element, wherein the screw element is a spherical segment-shaped bearing element and tapering conically Has threaded shaft, and wherein the holding element is a holder to hold the rod and a bearing shell to hold the bearing element of the screw element.
Aus
dem
Bei
der Polyaxialschraube gemäß dem
Davon ausgehend liegt der vorliegenden Erfindung die Aufgabe zu Grunde, ein Verankerungselement zu schaffen, welches einen geringeren Materialbedarf hat und einfacher zu fertigen ist.From that starting from the present invention, the task is based to create an anchoring element, which requires less material has and is easier to manufacture.
Als technische Lösung dieser Aufgabe wird erfindungsgemäß ein Verankerungselement gemäß den Merkmalen des Anspruches 1 vorgeschlagen. Vorteilhafte Weiterbildungen des erfindungsgemäßen Verankerungselementes sind den Unteransprüchen zu entnehmen.As technical solution According to the invention, this object is an anchoring element according to the features of claim 1 proposed. Advantageous further developments of the Anchoring element according to the invention are the dependent claims refer to.
Ein nach dieser technischen Lösung ausgebildetes Verankerungselement hat den Vorteil, dass durch die direkte Lagerung des Lagerelementes in der Lagerschale ein aus dem Stand der Technik bekanntes Klemmelement verzichtet werden kann. Hierdurch wird neben einer Materialeinsparung des sehr teuren Titan auch eine konstruktive Vereinfachung erreicht, so dass das erfindungsgemäße Verankerungselement sehr viel kostengünstiger herstellbar ist.On after this technical solution trained anchoring element has the advantage that direct storage of the bearing element in the bearing shell from the Known prior art clamping element can be dispensed with. hereby In addition to saving the material of the very expensive titanium, there will also be a constructive simplification achieved, so that the anchoring element according to the invention much cheaper can be produced.
Bei dem erfindungsgemäßen Verankerungselement wird in die vorzugsweise U-förmige Halterung ein Stab eingelegt und mit einem schraubbaren Sicherungselement fixiert. Dabei drückt dieser Stab auf das kugelsegmentförmige Lagerelement und presst dieses in die Lagerschale. Hierdurch entsteht zwischen Lagerelement und Lagerschale eine erhöhte Reibung, durch die das Halteelement gegenüber dem Schraubelement in der momentanen Position gehalten wird. Obwohl das Lagerelement nur mit einem Teil seiner Oberfläche an der Lagerschale zur Anlage kommt, reicht der durch den Stab über das Lagerelement ausgeübte Druck auf die Lagerschale aus, um ein Verrutschen des Halteelementes gegenüber dem Schraubelement zu verhindern, sobald der Stab fest in der Halterung fixiert ist.at the anchoring element according to the invention is in the preferably U-shaped bracket a rod inserted and with a screwable securing element fixed. Doing so this rod on the spherical segment-shaped bearing element and presses this into the bearing shell. This creates between the bearing element and bearing shell an increased Friction by which the holding element against the screw element in the current position is held. Although the bearing element only with part of its surface comes into contact with the bearing shell, it extends through the rod over the bearing element practiced Pressure on the bearing shell to prevent the holding element from slipping across from prevent the screw element once the rod is firmly in the bracket is fixed.
In einer bevorzugten Weiterbildung hat es sich als vorteilhaft erwiesen, die Oberfläche des Lagerelementes und/oder der Lagerschale mit Vertiefungen zu versehen oder aufgeraut auszuführen, insbesondere auf der Oberfläche des Lagerelementes und/oder der Lagerschale eine Anzahl Rillen oder Nuten vorzusehen. Durch diese Oberflächengestaltung wird die Anlagefläche zwischen Lagerelement und Lagerschale weiter verringert, so dass der vom Stab auf das Lagerelement ausgeübte Druck zu einer erhöhten Flächenpressung auf der verbleibenden Kontaktfläche führt, was letztendlich zu einem höheren Kraftschluss führt und eine zuverlässige Fixierung des Halteelementes gegenüber dem Schraubelement bewirkt.In a preferred further development, it has proven to be advantageous the surface of the bearing element and / or the bearing shell with depressions provided or roughened, especially on the surface the bearing element and / or the bearing shell a number of grooves or grooves provided. Through this surface design becomes the contact area between the bearing element and the bearing shell further reduced, so that the pressure exerted by the rod on the bearing element to an increased surface pressure on the remaining contact area leads, which ultimately leads to a higher Adhesion leads and a reliable Fixing the holding element relative to the screw element causes.
Dabei hat es sich als sehr vorteilhaft erwiesen, die Rillen oder Nuten schräg verlaufen zu lassen, insbesondere die Rillen oder Nuten auf den gegenüberliegenden Seiten des Lagerelementes gegenläufig anzuordnen. Hierdurch wird ein noch besserer Kraftschluss zwischen Lagerelement und Lagerschale bei montiertem Stab erreicht.there the grooves or grooves have proven to be very beneficial aslant to run, especially the grooves or grooves on the opposite Sides of the bearing element in opposite directions to arrange. This creates an even better adhesion between Bearing element and bearing shell reached with rod installed.
Weitere Vorteile des erfindungsgemäßen Verankerungselementes ergeben sich aus der beigefügten Zeichnung und den nachstehend beschriebenen Ausführungsformen. Ebenso können die vorstehend genannten und die noch weiter ausgeführten Merkmale erfindungsgemäß jeweils einzeln oder in beliebigen Kombinationen miteinander verwendet werden. Die erwähnten Ausführungsformen sind nicht als abschließende Aufzählung zu verstehen, sondern haben vielmehr beispielhaften Charakter. Es zeigen:Further Advantages of the anchoring element according to the invention result from the attached Drawing and the embodiments described below. Likewise, the The above-mentioned and the features further elaborated according to the invention in each case can be used individually or in any combination with each other. The mentioned embodiments are not considered final enumeration to understand, but rather have exemplary character. Show it:
Das
in den
Die
Halterung
Das
Lagerelement
In
den
Nachdem
der operierende Arzt das Schraubelement
- 1010
- Halteelementretaining element
- 1212
- Halterungbracket
- 1414
- Lagerschalebearing shell
- 1616
- Schraubelementscrew
- 1818
- Gewindeschaftthreaded shaft
- 2020
- Lagerelementbearing element
- 2222
- Schlüsselaufnahmekey Adapter
- 2424
- Stegweb
- 2626
- Stegweb
- 2828
- Sägezahngewindebuttress
- 3030
- Madenschraubegrub screw
- 3232
- Rillengrooves
- 3434
- Riffelungknurl
Claims (5)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20307776U DE20307776U1 (en) | 2003-05-19 | 2003-05-19 | Anchoring element for fastening a rod of a device for setting up a human or animal spine to a vertebral bone |
PCT/DE2004/000834 WO2004103193A1 (en) | 2003-05-19 | 2004-05-03 | Anchoring element for fixing a rod of a device for setting a human or animal spinal column to a vertebra |
EP04730817A EP1624817A1 (en) | 2003-05-19 | 2004-05-03 | Anchoring element for fixing a rod of a device for setting a human or animal spinal column to a vertebra |
DE112004001374T DE112004001374D2 (en) | 2003-05-19 | 2004-05-03 | Anchoring member for attaching a rod of a device for establishing a human or animal spine on a vertebral bone |
US10/557,127 US20070157543A1 (en) | 2003-05-19 | 2004-05-03 | Anchoring element for fixing a rod of a device for setting a human or animal spinal column to a vertebra |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20307776U DE20307776U1 (en) | 2003-05-19 | 2003-05-19 | Anchoring element for fastening a rod of a device for setting up a human or animal spine to a vertebral bone |
Publications (1)
Publication Number | Publication Date |
---|---|
DE20307776U1 true DE20307776U1 (en) | 2004-09-23 |
Family
ID=33039398
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20307776U Expired - Lifetime DE20307776U1 (en) | 2003-05-19 | 2003-05-19 | Anchoring element for fastening a rod of a device for setting up a human or animal spine to a vertebral bone |
DE112004001374T Expired - Fee Related DE112004001374D2 (en) | 2003-05-19 | 2004-05-03 | Anchoring member for attaching a rod of a device for establishing a human or animal spine on a vertebral bone |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE112004001374T Expired - Fee Related DE112004001374D2 (en) | 2003-05-19 | 2004-05-03 | Anchoring member for attaching a rod of a device for establishing a human or animal spine on a vertebral bone |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070157543A1 (en) |
EP (1) | EP1624817A1 (en) |
DE (2) | DE20307776U1 (en) |
WO (1) | WO2004103193A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090105756A1 (en) * | 2007-10-23 | 2009-04-23 | Marc Richelsoph | Spinal implant |
US9603629B2 (en) | 2008-09-09 | 2017-03-28 | Intelligent Implant Systems Llc | Polyaxial screw assembly |
US20110218580A1 (en) | 2010-03-08 | 2011-09-08 | Stryker Trauma Sa | Bone fixation system with curved profile threads |
US9044273B2 (en) | 2013-10-07 | 2015-06-02 | Intelligent Implant Systems, Llc | Polyaxial plate rod system and surgical procedure |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998034554A1 (en) * | 1997-02-11 | 1998-08-13 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
EP1222899A2 (en) * | 2001-01-05 | 2002-07-17 | Stryker Spine SA | Pedicle screw assembly |
DE20207851U1 (en) * | 2002-05-21 | 2002-10-10 | Metz Stavenhagen Peter | Anchoring element for fastening a rod of a device for setting up a human or animal spine to a vertebral bone |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5002542A (en) * | 1989-10-30 | 1991-03-26 | Synthes U.S.A. | Pedicle screw clamp |
US5466237A (en) * | 1993-11-19 | 1995-11-14 | Cross Medical Products, Inc. | Variable locking stabilizer anchor seat and screw |
US5520690A (en) * | 1995-04-13 | 1996-05-28 | Errico; Joseph P. | Anterior spinal polyaxial locking screw plate assembly |
AU725487B2 (en) * | 1997-01-22 | 2000-10-12 | Synthes Gmbh | Device for connecting a longitudinal bar to a pedicle screw |
DE29710484U1 (en) | 1997-06-16 | 1998-10-15 | Howmedica Gmbh | Receiving part for a holding component of a spinal implant |
US6302888B1 (en) * | 1999-03-19 | 2001-10-16 | Interpore Cross International | Locking dovetail and self-limiting set screw assembly for a spinal stabilization member |
US6254602B1 (en) * | 1999-05-28 | 2001-07-03 | Sdgi Holdings, Inc. | Advanced coupling device using shape-memory technology |
US6280442B1 (en) * | 1999-09-01 | 2001-08-28 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US6733502B2 (en) * | 2002-05-15 | 2004-05-11 | Cross Medical Products, Inc. | Variable locking spinal screw having a knurled collar |
-
2003
- 2003-05-19 DE DE20307776U patent/DE20307776U1/en not_active Expired - Lifetime
-
2004
- 2004-05-03 WO PCT/DE2004/000834 patent/WO2004103193A1/en not_active Application Discontinuation
- 2004-05-03 EP EP04730817A patent/EP1624817A1/en not_active Withdrawn
- 2004-05-03 US US10/557,127 patent/US20070157543A1/en not_active Abandoned
- 2004-05-03 DE DE112004001374T patent/DE112004001374D2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998034554A1 (en) * | 1997-02-11 | 1998-08-13 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
EP1222899A2 (en) * | 2001-01-05 | 2002-07-17 | Stryker Spine SA | Pedicle screw assembly |
DE20207851U1 (en) * | 2002-05-21 | 2002-10-10 | Metz Stavenhagen Peter | Anchoring element for fastening a rod of a device for setting up a human or animal spine to a vertebral bone |
Also Published As
Publication number | Publication date |
---|---|
WO2004103193A1 (en) | 2004-12-02 |
DE112004001374D2 (en) | 2006-04-13 |
US20070157543A1 (en) | 2007-07-12 |
EP1624817A1 (en) | 2006-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R163 | Identified publications notified | ||
R207 | Utility model specification |
Effective date: 20041028 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20060613 |
|
R157 | Lapse of ip right after 6 years |
Effective date: 20091201 |