DE102013102955B4 - Wedge for staged spreading - Google Patents
Wedge for staged spreading Download PDFInfo
- Publication number
- DE102013102955B4 DE102013102955B4 DE102013102955.8A DE102013102955A DE102013102955B4 DE 102013102955 B4 DE102013102955 B4 DE 102013102955B4 DE 102013102955 A DE102013102955 A DE 102013102955A DE 102013102955 B4 DE102013102955 B4 DE 102013102955B4
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- DE
- Germany
- Prior art keywords
- movable support
- pressure piece
- main body
- guide
- vertebrae
- 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 - Fee Related
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- A61F2/447—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Vascular Medicine (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Prostheses (AREA)
Abstract
Keil zum stufigen Spreizen, insbesondere für ein Implantat für eine Lendenwirbelsäule, der einen Hauptkörper (10) und eine Schraube (20) umfasst, die im Hauptkörper (10) angeordnet und am Ende mit einem Druckstück (21) verbunden ist, wobei der Hauptkörper (10) im Bereich einer Umfangsseite des Druckstücks (21) mindestens eine erste und eine zweite bewegliche Stützeinheit (14) besitzt, die jeweils durch einen Schlitz (13) mindestens eine innere bewegliche Stützfläche (141) und eine äußere bewegliche Stützfläche (142) bilden, wobei bei einer Bewegung des Druckstücks (21) von dem Druckstück (21) zunächst die innere bewegliche Stützfläche (141) ausgespreizt werden kann und dann nach einer bestimmten Bewegungsstrecke des Druckstücks (21) die zweite Stützfläche ausgespreizt werden kann, wodurch die beweglichen Stützeinheiten (14) mit einem geeigneten Winkel die beiden benachbarten Wirbel einer Wirbelsäule stufig ausspreizen entsprechend des Abstands der beiden Wirbel.Wedge for staged spreading, in particular for a lumbar spine implant, comprising a main body (10) and a screw (20) arranged in the main body (10) and connected at the end to a pressure piece (21), the main body ( 10) in the region of a peripheral side of the pressure piece (21) has at least a first and a second movable support unit (14) which each form at least one inner movable support surface (141) and one outer movable support surface (142) through a slot (13), wherein during a movement of the pressure piece (21) of the pressure piece (21), the inner movable support surface (141) can be spread out and then after a certain distance of movement of the pressure piece (21), the second support surface can be spread out, whereby the movable support units (14 ) with a suitable angle stagger the two adjacent vertebrae of a spine according to the distance between the two vertebrae ,
Description
Die Erfindung richtet sich auf einen Keil zum stufigen Spreizen, insbesondere für ein Implantat für eine Lendenwirbelsäule, der einen Hauptkörper und eine Schraube umfasst, die im Hauptkörper angeordnet und am Ende mit einem Druckstück verbunden ist. Ein solcher Keil soll die Angriffskraft beim Einsetzen verteilen und eine Funktion der Höhenverstellung aufweisen, so dass das Einsetzen kraftsparender, präziser und schneller ist.The invention is directed to a wedge for staged spreading, in particular for a lumbar spine implant comprising a main body and a screw arranged in the main body and connected at the end to a pressure piece. Such a wedge is intended to distribute the attack force when inserting and have a function of height adjustment, so that the insertion is power-saving, precise and faster.
Durch Alter, Unfall, Sport, Fehlstellung oder beruflichen Schaden können bei der Wirbelsäule eine Verformung, ein Knorpelverschleiß oder eine Knochenneubildung, insbesondere die altersbedingten degenerativen Wirbel säulenerkrankungen, auftreten. Dadurch kann die Funktion der anderen Organe des Körpers beeinflusst werden. Um die altersbedingten degenerativen Wirbelsäulenerkrankungen oder den Wirbelsäulenschaden (durch Außenkraft) zu bekämpfen, wird oft ein Implantat in die Wirbelsäule eingeführt bzw. eingepflanzt.Due to age, accident, sports, malposition or occupational damage, spinal column deformations, cartilage deterioration or new bone formation can occur, in particular the age-related degenerative spinal column diseases. This can affect the function of the other organs of the body. To combat age-related degenerative spinal disease or spinal injury (by external force), an implant is often inserted or implanted in the spine.
Aus den taiwanesischen Gebrauchsmustern
Die
Die
Aus dem Dokument
Aus dem Patent
Dadurch wird zwar eine Anpassung an den Abstand der Wirbel ermöglicht, allerdings müssen beim Einsetzen jedoch die beiden Stützteile zunächst so ausgespreizt werden, dass sie in die beiden Wirbel eingreifen. Dann können sie weiter ausgespreizt werden. Daher ist das Einsetzen kraftaufwendiger. Da die Angriffskraft größer ist, kann das Implantat verrutschen, so dass das Einsetzen schwer ist und eine längere Zeit in Anspruch nimmt.Although this makes it possible to adapt to the spacing of the vertebrae, however, when inserting the two support parts must first be spread out in such a way that they engage in the two vertebrae. Then they can be spread out further. Therefore, the insertion is more laborious. As the attack force is greater, the implant may slip, making insertion difficult and taking a longer time.
Der Erfindung liegt die Aufgabe zugrunde, einen Keil zum stufigen Spreizen zu schaffen, der die Angriffskraft beim Einsetzen verteilt und eine Funktion der Höhenverstellung aufweist, so dass das Einsetzen bzw. Einführen kraftsparender und präziser ist.The invention has for its object to provide a wedge for staged spreading, which distributes the attack force when inserting and has a function of height adjustment, so that the insertion or insertion is power-saving and precise.
Der Erfindung liegt als eine weitere Aufgabe zugrunde, einen Keil zum stufigen Spreizen zu schaffen, der die Zeit des Einsetzens verkürzen kann.It is another object of the present invention to provide a wedge for staged spreading which can shorten the time of insertion.
Diese Aufgabe wird durch einen Keil zum stufigen Spreizen, insbesondere für eine Implantat für eine Lendenwirbelsäule, gelöst, der einen Hauptkörper und eine Schraube umfasst, die im Hauptkörper angeordnet und am Ende mit einem Druckstück verbunden ist, wobei der Hauptkörper im Bereich einer Umfangsseite des Druckstücks mindestens eine erste und eine zweite bewegliche Stützeinheit besitzt, die jeweils durch einen Schlitz mindestens eine innere bewegliche Stützfläche bilden, wobei bei einer Bewegung des Druckstücks von dem Druckstück zunächst die innere bewegliche Stützfläche ausgespreizt werden kann und dann nach einer bestimmten Bewegungstrecke des Druckstücks die zweite Stützfläche ausgespreizt werden kann, wodurch die beweglichen Stützeinheiten mit einem geeigneten Winkel die beiden benachbarten Wirbel einer Wirbelsäule stufig ausspreizen entsprechend des Abstands der beiden Wirbel.This object is achieved by a wedge for staged spreading, in particular for a lumbar spine implant, which comprises a main body and a screw which is arranged in the main body and connected at the end to a pressure piece, wherein the main body in the region of a peripheral side of the pressure piece has at least a first and a second movable support unit, each forming by a slot at least one inner movable support surface, wherein upon movement of the pressure piece of the pressure piece initially the inner movable support surface can be spread out and then after a certain movement of the pressure piece, the second support surface can be spread out, whereby the movable support units with a suitable angle stably spread out the two adjacent vertebrae of a spine according to the distance between the two vertebrae.
Zweckmäßige Ausgestaltungen und vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der jeweiligen Unteransprüche.Advantageous embodiments and advantageous developments of the invention are the subject of the respective subclaims.
Im Folgenden wird die Erfindung an Hand von Ausführungsbeispielen mit Bezug auf die Zeichnung im Detail beschrieben. In der Zeichnung zeigt: In the following the invention with reference to embodiments with reference to the drawings will be described in detail. In the drawing shows:
Der erfindungsgemäße Keil zum stufigen Spreizen ist aus Titan, Tantal, Nichtroststahl, Keramik, Aluminiumoxid, PE, PU, PEEK oder Kieselgel hergestellt und besitzt eine gute biologische Kompatibilität und mechanische Eigenschaft.The wedge for staged spreading according to the invention is made of titanium, tantalum, stainless steel, ceramic, alumina, PE, PU, PEEK or silica gel and has good biological compatibility and mechanical property.
Die
Wie aus
Wie aus den
Die
Der Hauptkörper kann auch unbeweglich ausgebildet sein. Die
Die
Zusammenfassend ist festzustellen, dass die Erfindung bewegliche Stützeinheiten aufweist, die durch Schlitze bewegliche Stützflächen bilden, die von außen nach innen gereiht sind, wobei wenn das Druckstück von der Schraube mitbewegt wird, es zunächst eine bewegliche Stützfläche und dann nacheinander die anderen Stützflächen mit einem geeigneten Winkel ausspreizt. Dadurch kann der erfindungsgemäße Keil die Angriffskraft beim Einsetzen verteilen und besitzt eine Funktion der Höhenverstellung, so dass das Einsetzen kraftsparender, präziser und schneller erfolgen kann.In summary, it should be noted that the invention comprises movable support units which form slots, which are movable from outside to inside, wherein when the pressure piece is moved by the screw, it first a movable support surface and then successively the other support surfaces with a suitable Angle spreads out. As a result, the wedge according to the invention can distribute the attack force when inserting and has a function of the height adjustment, so that the insertion can be made more energy-saving, precise and faster.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Hauptkörpermain body
- 1111
- verzahnte Flächetoothed surface
- 1212
- Einschnittincision
- 121121
- breiterer Abschnittwider section
- 1313
- Schlitzslot
- 1414
- bewegliche Stützeinheitmovable support unit
- 141, 143, 144141, 143, 144
- bewegliche Stützflächemovable support surface
- 142142
- rahmenförmige bewegliche Stützfläche,frame-shaped movable support surface,
- 1411, 14211411, 1421
- Führungsflächeguide surface
- 14221422
- Schultershoulder
- 14121412
- Bohrungdrilling
- 1515
- Längslochlongitudinal hole
- 1421, 1411, 1431,1421, 1411, 1431,
- schräge Führungsflächesloping guide surface
- 1421a, 1411a, 1431a1421a, 1411a, 1431a
- stufige Führungsflächestepped guide surface
- 1421b, 1411b, 1431b1421b, 1411b, 1431b
- bogenförmige Führungsflächearcuate guide surface
- 21, 21a21, 21a
- DruckstückPressure piece
- 2020
- Schraubescrew
- 3030
- Hauptkörpermain body
- 3131
- verzahnte Oberflächetoothed surface
- 32, 33532, 335
- Schlitzslot
- 3333
- bewegliche Stützeinheitmovable support unit
- 331, 332, 333331, 332, 333
- bewegliche Stützflächemovable support surface
- 332, 334332, 334
- rahmenförmige bewegliche Stützflächeframe-shaped movable support surface
- 3311, 3321, 3331, 33413311, 3321, 3331, 3341
- Führungsflächeguide surface
- 4040
- Hauptkörpermain body
- 4141
- verzahnte Flächetoothed surface
- 4242
- Einschnittincision
- 4343
- breiterer Abschnittwider section
- 4444
- Schlitzslot
- 4545
- bewegliche Stützeinheitmovable support unit
- 4646
- Rahmenframe
- 451, 452451, 452
- bewegliche Stützflächemovable support surface
- 4511, 45214511, 4521
- Führungsflächeguide surface
- 5050
- Hauptkörpermain body
- 5151
- verzahnte Flächetoothed surface
- 5252
- Schlitzslot
- 5353
- bewegliche Stützeinheitmovable support unit
- 5454
- Rahmenframe
- 531, 532, 533531, 532, 533
- bewegliche Stützflächemovable support surface
- 5555
- Rahmenframe
- 551551
- breiterer Abschnittwider section
Claims (10)
Priority Applications (1)
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DE102013102955.8A DE102013102955B4 (en) | 2013-03-22 | 2013-03-22 | Wedge for staged spreading |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102013102955.8A DE102013102955B4 (en) | 2013-03-22 | 2013-03-22 | Wedge for staged spreading |
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DE102013102955A1 DE102013102955A1 (en) | 2014-10-09 |
DE102013102955B4 true DE102013102955B4 (en) | 2017-07-27 |
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US10039650B2 (en) | 2013-03-15 | 2018-08-07 | In Queue Innovations, Llc | Expandable fusion cage system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5554191A (en) * | 1994-01-26 | 1996-09-10 | Biomat | Intersomatic vertebral cage |
US20020143401A1 (en) * | 2001-03-27 | 2002-10-03 | Michelson Gary K. | Radially expanding interbody spinal fusion implants, instrumentation, and methods of insertion |
DE102005033608A1 (en) * | 2005-07-14 | 2007-01-25 | Medicon Eg, Chirurgiemechaniker-Genossenschaft | Expanding lumbar implant, for insertion between vertebrae, has a body with legs spread apart by a moving slide |
US20110282396A1 (en) * | 2010-05-11 | 2011-11-17 | Warsaw Orthopedic, Inc. | Implant with deployable stabilizers |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6207132B1 (en) | 1998-12-04 | 2001-03-27 | Chinese Petroleum Corporation | Process for producing high purity hydrogen |
TW414944B (en) | 1999-08-18 | 2000-12-11 | United Microelectronics Corp | A method for forming planar silicon oxide layer on semiconductor chip |
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2013
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5554191A (en) * | 1994-01-26 | 1996-09-10 | Biomat | Intersomatic vertebral cage |
US20020143401A1 (en) * | 2001-03-27 | 2002-10-03 | Michelson Gary K. | Radially expanding interbody spinal fusion implants, instrumentation, and methods of insertion |
DE102005033608A1 (en) * | 2005-07-14 | 2007-01-25 | Medicon Eg, Chirurgiemechaniker-Genossenschaft | Expanding lumbar implant, for insertion between vertebrae, has a body with legs spread apart by a moving slide |
US20110282396A1 (en) * | 2010-05-11 | 2011-11-17 | Warsaw Orthopedic, Inc. | Implant with deployable stabilizers |
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