DE102012202749A1 - Dynamic stabilization device for bone e.g. spinal column, has deformable regions that are arranged in form of loop, so that sides of loop surround bone in bone quiescent state - Google Patents
Dynamic stabilization device for bone e.g. spinal column, has deformable regions that are arranged in form of loop, so that sides of loop surround bone in bone quiescent state Download PDFInfo
- Publication number
- DE102012202749A1 DE102012202749A1 DE201210202749 DE102012202749A DE102012202749A1 DE 102012202749 A1 DE102012202749 A1 DE 102012202749A1 DE 201210202749 DE201210202749 DE 201210202749 DE 102012202749 A DE102012202749 A DE 102012202749A DE 102012202749 A1 DE102012202749 A1 DE 102012202749A1
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- Germany
- Prior art keywords
- loops
- stabilization device
- bone
- dynamic stabilization
- loop
- 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.)
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Classifications
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- 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
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
-
- 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
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
- A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
-
- 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
Abstract
Description
Die Erfindung betrifft eine dynamische Stabilisierungseinrichtung für Knochen, insbesondere für die Wirbelsäule.The invention relates to a dynamic stabilization device for bones, in particular for the spine.
Stand der TechnikState of the art
Für Degenerative Erkrankungen der Wirbelsäule werden heute oft durch eine Versteifungsoperation behandelt. Dabei werden zwei oder mehrere Wirbel mit Hilfe eines Implantatsystems rigide miteinander verbunden, mit dem Ziel eine knöcherne Verbindung der Wirbelkörper zu erreichen. Neben der Einschränkung der Beweglichkeit bei langstreckigen Versorgungen dieser Art ist die höhere Belastung der Bandscheiben der angrenzenden Segmente, und damit deren beschleunigte Degeneration nachteilig bei dieser Behandlungsmethode. Eine alternative Möglichkeit der Behandlung besteht darin, die Wirbel semi-rigide (dynamisch) miteinander zu stabilisieren und dabei eine Restbeweglichkeit zuzulassen ohne eine unmittelbare Fusion herbeizuführen.For degenerative diseases of the spine are often treated today by a stiffening operation. In this case, two or more vertebrae are rigidly connected to one another with the aid of an implant system, with the aim of achieving a bony connection of the vertebral bodies. In addition to the restriction of mobility in long-term restorations of this type is the higher load on the discs of the adjacent segments, and thus their accelerated degeneration disadvantageous in this treatment method. An alternative way of treatment is to stabilize the vertebrae semi-rigidly (dynamically) with each other while allowing residual mobility without inducing immediate fusion.
Aus (
Aus (
Aufgabetask
Die Aufgabe der vorliegenden Erfindung besteht darin, eine Stabilisierungssystem, insbesondere für die Wirbelsäule, bereitzustellen, welche einerseits eine ausreichend hohe Stabilisierungswirkung entfaltet, andererseits den physiologischen Bewegungsumfang eines oder mehrerer Wirbelsäulensegmente zulässt und die dabei auftretenden Belastungen bzw. Bewegungen ermüdungsfrei erträgt. Das der Stabilisierungseinrichtung zugrundeliegende Verbindungselement muss dazu insbesondere unempfindlich gegen Biegung und signifikanten Längenänderungen sein. Das Verbindungselement sollte optional mit einem rigiden Verbindungselement wie z.B. einem Stab oder Rohr kombiniert werden können, welcher zur fusionierenden Versorgung eines oder mehrerer Wirbel verwendet wird. Mit dieser Kombination kann ein dynamisch stabilisierter Übergang zwischen einer Fusionsstrecke und einem unbehandelten Abschnitt der Wirbelsäule realisiert werden.The object of the present invention is to provide a stabilization system, in particular for the spine, which on the one hand develops a sufficiently high stabilizing effect, on the other hand allows the physiological range of motion of one or more spinal segments and endures the loads or movements that occur without fatigue. In particular, the connecting element underlying the stabilizing device must be insensitive to bending and significant changes in length. The connecting element should optionally be provided with a rigid connecting element, e.g. a rod or tube can be combined, which is used for the fusing supply of one or more vertebrae. With this combination, a dynamically stabilized transition between a fusion path and an untreated portion of the spine can be realized.
Lösungsolution
Die Aufgabe wird gelöst indem das dynamische Verbindungselement der Stabilisierungseinrichtung aus zwei oder mehr Schlaufen bestehen, die jeweils eine hohe axiale Verformbarkeit aufweisen und über Knochenanker mit der Wirbelsäule verbunden werden können. Die Knochenanker werden über Anbindungsstellen mit der dynamischen Stabilisierungseinrichtung verbunden, wobei die Anbindungsstellen nicht zwischen, sondern mindestens hinter einer der Pedikelschraube liegen, also außerhalb des Zwischenraums zweier Pedikelschrauben. Die Schlaufen verlaufen um die Pedikelschrauben, so dass diese Strecke ebenfalls für die elastische Deformation der Schlaufen zur Verfügung steht. Dieser Verlauf kann haupttsächlich als "8" oder in einer alternativen Ausführungsform auch als "S"-Form bezeichnet werden. Die Verbindungsstellen zu den Knochenankern befinden sich an der konkaven Seite der jeweiligen Schlaufe. Zur Steigerung der Dynamik des Verbindungselements können die Schlaufen weitere kleinere Schlaufen oder wellenförmige Ausprägung haben. Auch können die Schlaufen aus einer Mehrzahl von geschichteten, dünneren Schlaufen bestehen.The object is achieved by the dynamic connection element of the stabilization device consist of two or more loops, each having a high axial deformability and can be connected via bone anchor with the spine. The bone anchors are connected via attachment points with the dynamic stabilization device, wherein the attachment sites are not between, but at least behind a pedicle screw, ie outside the space between two pedicle screws. The loops run around the pedicle screws, so that this distance is also available for the elastic deformation of the loops. This course may be referred to primarily as "8" or, in an alternative embodiment, as the "S" shape. The joints to the bone anchors are located on the concave side of the respective loop. To increase the dynamics of the connecting element, the loops more have smaller loops or undulating shape. Also, the loops may consist of a plurality of layered, thinner loops.
Vorteileadvantages
Vorteilhaft bei der vorliegenden Erfindung ist die hohe Elastizität bei Längs- und Biegebeanspruchung und eine hohe Ermüdungsfestigkeit bei gleichzeitig hoher Stabilisierungswirkung. Dies ermöglicht eine dauerhafte, physiologische Stabilisierung der Wirbelsäule und damit eine Reduktion der Belastung auf die damit behandelten Segmente sowie deren Nachbarsegmente. Die erfindungsgemäße Stabilisierungseinrichtung kann intraoperativ an die engen Platzverhältnisse zwischen den Knochenverankerungseinrichtungen angepasst werden. Optional kann ein herkömmlicher Rundstab an das erfindungsgemäße Verbindungselement befestigt werden, was vorteilhaft für die Hybridversorgung von Wirbelsäulen ist.Advantageous in the present invention is the high elasticity in longitudinal and bending stress and a high fatigue strength with high stabilization effect. This allows a permanent, physiological stabilization of the spine and thus a reduction of stress on the treated segments and their neighboring segments. The stabilization device according to the invention can be adapted intraoperatively to the limited space between the bone anchoring devices. Optionally, a conventional round rod can be fastened to the connecting element according to the invention, which is advantageous for the hybrid provision of spinal columns.
Bevorzugte Details und AusführungsformenPreferred details and embodiments
Die technischen Lösungen sind nachfolgend oft beispielhaft beschrieben. Dies soll als Mittel zur Erläuterung des zugrundeliegenden Gedankens aufgefasst und nicht als auf die jeweilige konkrete Darstellung beschränkt verstanden werden.The technical solutions are often described below by way of example. This should be understood as a means of explaining the underlying idea and should not be construed as limited to the particular concrete representation.
Die dynamische Stabilisierungseinrichtung (
Die dynamische Stabilisierungseinrichtung (
In
In einer alternativen Ausgestaltungsform (
Zur Erhöhung der Verformbarkeit der Schlaufen (
In einer weiteren Ausgestaltungsform (
In
Eine weitere Ausführungsform (
Die Kombination von einer vorgestellten dynamisch stabilisierenden Verbindungselemente mit einer Anbindung an einen Rundstab ermöglicht die Hybridversorgung und nachträgliche Anbindung an eine bestehende Fusionsinstrumentierung.The combination of an introduced dynamically stabilizing connection elements with a connection to a round rod enables the hybrid supply and subsequent connection to an existing fusion instrumentation.
Durch die Teilung der "8"-förmig verlaufenden Schlaufen in zwei "S"-förmige Schlaufen (
In einer weiteren Ausführungsform (
Figurenbeschreibungfigure description
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 0669109 B1 [0003] EP 0669109 B1 [0003]
- EP 1857065 A1 [0003] EP 1857065 A1 [0003]
- EP 1399078 B1 [0004] EP 1399078 B1 [0004]
- WO 2004089244 A2 [0004] WO 2004089244 A2 [0004]
- EP 1574173 B1 [0004] EP 1574173 B1 [0004]
- EP 1658815 A1 [0004] EP 1658815 A1 [0004]
- WO 2006101737 A1 [0004] WO 2006101737 A1 [0004]
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210202749 DE102012202749A1 (en) | 2012-02-22 | 2012-02-22 | Dynamic stabilization device for bone e.g. spinal column, has deformable regions that are arranged in form of loop, so that sides of loop surround bone in bone quiescent state |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210202749 DE102012202749A1 (en) | 2012-02-22 | 2012-02-22 | Dynamic stabilization device for bone e.g. spinal column, has deformable regions that are arranged in form of loop, so that sides of loop surround bone in bone quiescent state |
Publications (1)
Publication Number | Publication Date |
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DE102012202749A1 true DE102012202749A1 (en) | 2013-08-22 |
Family
ID=48915261
Family Applications (1)
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DE201210202749 Withdrawn DE102012202749A1 (en) | 2012-02-22 | 2012-02-22 | Dynamic stabilization device for bone e.g. spinal column, has deformable regions that are arranged in form of loop, so that sides of loop surround bone in bone quiescent state |
Country Status (1)
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DE (1) | DE102012202749A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018011955A (en) * | 2016-07-15 | 2018-01-25 | ストライカー・ユーロピアン・ホールディングス・I,リミテッド・ライアビリティ・カンパニー | Spinal fixation assembly |
US10786285B2 (en) | 2016-06-06 | 2020-09-29 | Stryker European Holdings I, Llc | Paraxial revision rod-to-rod connector |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0669109B1 (en) | 1994-02-28 | 1999-05-26 | Sulzer Orthopädie AG | Stabilizer for adjacent vertebrae |
WO2004089244A2 (en) | 2003-04-04 | 2004-10-21 | Stephen Ritland | Dynamic fixation device and method of use |
EP1399078B1 (en) | 2001-06-16 | 2004-12-15 | Dilip Kumar Sengupta | An assembly for the stabilisation of vertebral bodies of the spine |
EP1658815A1 (en) | 2004-11-17 | 2006-05-24 | BIEDERMANN MOTECH GmbH | Elastic element for use in a stabilising device for bones or vertebrae |
WO2006101737A1 (en) | 2005-03-17 | 2006-09-28 | Abbott Laboratories | Apparatus and methods for spinal implant with dynamic stabilization system |
EP1574173B1 (en) | 2004-03-09 | 2007-01-10 | BIEDERMANN MOTECH GmbH | Elastic rod-shaped element for use in spinal or accident surgery and stabilising device comprising such an element |
EP1857065A1 (en) | 2006-05-16 | 2007-11-21 | BIEDERMANN MOTECH GmbH | Longitudinal member for use in spinal or trauma surgery |
-
2012
- 2012-02-22 DE DE201210202749 patent/DE102012202749A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0669109B1 (en) | 1994-02-28 | 1999-05-26 | Sulzer Orthopädie AG | Stabilizer for adjacent vertebrae |
EP1399078B1 (en) | 2001-06-16 | 2004-12-15 | Dilip Kumar Sengupta | An assembly for the stabilisation of vertebral bodies of the spine |
WO2004089244A2 (en) | 2003-04-04 | 2004-10-21 | Stephen Ritland | Dynamic fixation device and method of use |
EP1574173B1 (en) | 2004-03-09 | 2007-01-10 | BIEDERMANN MOTECH GmbH | Elastic rod-shaped element for use in spinal or accident surgery and stabilising device comprising such an element |
EP1658815A1 (en) | 2004-11-17 | 2006-05-24 | BIEDERMANN MOTECH GmbH | Elastic element for use in a stabilising device for bones or vertebrae |
WO2006101737A1 (en) | 2005-03-17 | 2006-09-28 | Abbott Laboratories | Apparatus and methods for spinal implant with dynamic stabilization system |
EP1857065A1 (en) | 2006-05-16 | 2007-11-21 | BIEDERMANN MOTECH GmbH | Longitudinal member for use in spinal or trauma surgery |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10786285B2 (en) | 2016-06-06 | 2020-09-29 | Stryker European Holdings I, Llc | Paraxial revision rod-to-rod connector |
US11523848B2 (en) | 2016-06-06 | 2022-12-13 | Stryker European Operations Holdings Llc | Paraxial revision rod-to-rod connector |
JP2018011955A (en) * | 2016-07-15 | 2018-01-25 | ストライカー・ユーロピアン・ホールディングス・I,リミテッド・ライアビリティ・カンパニー | Spinal fixation assembly |
EP3278751A3 (en) * | 2016-07-15 | 2018-04-25 | Stryker European Holdings I, LLC | Spinal fixation assembly |
US10687859B2 (en) | 2016-07-15 | 2020-06-23 | Stryker European Holdings I, Llc | Spinal fixation assembly |
AU2017204876B2 (en) * | 2016-07-15 | 2022-06-02 | Stryker European Operations Holdings Llc | Spinal fixation assembly |
US11389208B2 (en) | 2016-07-15 | 2022-07-19 | Stryker European Operations Holdings Llc | Spinal fixation assembly |
JP7209458B2 (en) | 2016-07-15 | 2023-01-20 | ストライカー・ユーロピアン・オペレイションズ・ホールディングス・リミテッド・ライアビリティ・カンパニー | Spinal fixation assembly |
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R005 | Application deemed withdrawn due to failure to request examination |