DE10240653A1 - Implant for stabilizing of vertebrae of cervical spine, comprising pointed tongues protruding from side sections - Google Patents
Implant for stabilizing of vertebrae of cervical spine, comprising pointed tongues protruding from side sectionsInfo
- Publication number
- DE10240653A1 DE10240653A1 DE10240653A DE10240653A DE10240653A1 DE 10240653 A1 DE10240653 A1 DE 10240653A1 DE 10240653 A DE10240653 A DE 10240653A DE 10240653 A DE10240653 A DE 10240653A DE 10240653 A1 DE10240653 A1 DE 10240653A1
- Authority
- DE
- Germany
- Prior art keywords
- implant
- implant according
- vertebrae
- tongue
- section
- 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.)
- Ceased
Links
- 239000007943 implant Substances 0.000 title claims abstract description 44
- 210000002105 tongue Anatomy 0.000 title claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 title description 2
- 238000004080 punching Methods 0.000 claims abstract description 4
- 210000000078 claw Anatomy 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 210000005182 tip of the tongue Anatomy 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 2
- 238000004904 shortening Methods 0.000 claims description 2
- 239000002639 bone cement Substances 0.000 abstract description 7
- 230000035515 penetration Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 2
- 208000007623 Lordosis Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 208000037873 arthrodesis Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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
- A61B17/809—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with bone-penetrating elements, e.g. blades or prongs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7055—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant connected to sacrum, pelvis or skull
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2/30965—Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30561—Special structural features of bone or joint prostheses not otherwise provided for breakable or frangible
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
- A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
- A61F2002/30785—Plurality of holes parallel
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
Die Erfindung betrifft ein Implantat zur Stabilisierung der Vertebrae cervicales bestehend aus einem metallischen Körper mit einem im wesentlichen U-förmigen Querschnitt, wobei in den Schenkeln eine Vielzahl von Ausnehmungen eingebracht ist und die oberen und unteren Endflächen des metallischen Körpers Arretierungsvorsprünge oder -zacken aufweisen, gemäß Oberbegriff des Patentanspruchs 1. The invention relates to an implant for stabilizing the vertebrae cervicales consisting of a metallic body with a substantially U-shaped Cross section, wherein a plurality of recesses are made in the legs is and the upper and lower end faces of the metallic body Have locking projections or spikes, according to the preamble of Claim 1.
Aus der EP 0 302 719 A1 ist ein Implantat in U-Form bekannt, wobei dort Öffnungen vorgesehen sind, die der Aufnahme von Knochenzement dienen. Weitere Öffnungen können als Aufnahme für eine Schraube vorhanden sein, um das Implantat unmittelbar im Wirbel zu fixieren. Als Material für das offenbarte Implantat wird auf kohlefaserverstärkten Kunststoff verwiesen. An U-shaped implant is known from EP 0 302 719 A1, with openings there are provided, which serve to absorb bone cement. Additional openings can be available as a receptacle for a screw to the Fix the implant directly in the vertebra. As material for the revealed The implant is referred to carbon fiber reinforced plastic.
Der ebenfalls bekannte Implantat-Platzhalter nach EP 0 268 115 A1 besitzt ein Zylindermantelelement mit einer Vielzahl von rautennetzförmigen Ausnehmungen. Ein dort vorgesehener Ring am oberen und unteren Ende des Zylindermantelelements verhindert ein unerwünschtes zu tiefes Eindringen des Implantats in den Wirbel. Dem gleichen Zweck dient eine zusätzlich vorgesehene Bodenplatte. Das Zylindermantelelement ist geschlossen und besitzt neben den Rautenöffnungen keine weiteren zum Einbringen von Knochenzement, so dass auch dort Schwierigkeiten bei der operativen Handhabung bestehen, insbesondere mit Nachteilen beim Knochenzement-Einpressen. The implant spacer according to EP 0 268 115 A1, which is also known, has a Cylinder jacket element with a large number of diamond-shaped recesses. A ring provided there at the top and bottom of the Cylinder jacket element prevents the implant from penetrating too deeply the vortex. An additionally provided base plate serves the same purpose. The The cylinder jacket element is closed and has next to the diamond openings no more to insert bone cement, so there too There are difficulties in operational handling, especially with Disadvantages when pressing in bone cement.
Die DE 196 15 938 A1 offenbart eine Wirbelsäulen-Stützvorrichtung zur Durchführung einer intersomatischen Arthrodese. Die Stützvorrichtung besteht aus Titan und ist flach und langgestreckt ausgebildet und in ihrem Mittelbereich verbreitert. Die Kanten besitzen mit Ausnahme des Mittelbereichs ein Sägezahnprofil. Die Gestalt der dort vorgestellten Stützvorrichtung ist der eines offenen Rings ähnlich, wobei durch das Aufbiegen der Endbereiche die Stützvorrichtung durchmesserseitig verschiedenen Anwendungsfällen angepasst werden kann. DE 196 15 938 A1 discloses a spine support device for Performing an intersomatic arthrodesis. The support device consists of Titanium is flat and elongated and in its central area widened. With the exception of the middle area, the edges have a Sawtooth profile. The shape of the support device presented there is one open ring similar, but by bending the end portions Support device adapted to different applications on the diameter side can be.
Die DE 195 09 317 A1 zeigt ein Implantat zum Einsetzen zwischen Wirbelkörper der Wirbelsäule als Platzhalter, wobei zwei endständige Implantatteile vorgesehen sind, die mit einem dazwischen befindlichen mittigen Implantatteil, das mit den endständigen Implantatteilen drehbar verbunden ist, wechselwirkt. DE 195 09 317 A1 shows an implant for insertion between the vertebral body Spine as a placeholder, with two terminal implant parts being provided those with a central implant part in between, which with the terminal implant parts is rotatably connected, interacts.
Die gezeigten Implantatteile sind als rohrförmige Hülse bzw. als Stirnring ausgebildet. Durch vorgesehene Öffnungen kann Knochenzement eingebracht werden. Diese Öffnungen sind jedoch nur dann optimal zum Einbringen von Knochenzement geeignet, wenn diese zur Deckung gebracht werden, was jedoch bei dem gewählten Verstellprinzip problematisch ist. The implant parts shown are as a tubular sleeve or as a front ring educated. Bone cement can be introduced through the openings provided become. However, these openings are only optimal for the introduction of Bone cement is suitable if these are brought into congruence, which however is the chosen adjustment principle is problematic.
Bezüglich des weiteren Standes der Technik zu höhenverstellbaren Wirbelkörperimplantaten, teilweise auch mit Implantatkörpern, die einen U-förmigen Querschnitt aufweisen, sei auf die US-PS 5,290,312 und 5,236,460 aufmerksam gemacht. Regarding the further state of the art regarding height adjustable Vertebral body implants, some with implant bodies that have a U-shaped shape Have cross section, attention is drawn to US Pat. Nos. 5,290,312 and 5,236,460 made.
Aus dem Vorgenannten ist es Aufgabe der Erfindung, ein weiterentwickeltes, kostengünstig zu fertigendes Implantat anzugeben, das insbesondere zur Stabilisierung der Vertebrae cervicales, d. h. der Halswirbel, nämlich des Atlas, des Axis als Drehwirbel und/oder der weiteren fünf Wirbel als Beugungswirbel geeignet ist. From the foregoing, it is the object of the invention to develop a further Specify inexpensive to manufacture implant, in particular for Stabilization of the vertebrae cervicales, d. H. the cervical vertebra, namely the atlas, the Axis suitable as a swirl vortex and / or the other five vertebrae as a diffraction vortex is.
Das zu schaffende Implantat soll besonders geeignet zur Aufnahme von Knochenzement oder dergleichen Osteosynthese-Materialien sein und Vorteile in der operativen Handhabung bieten. The implant to be created should be particularly suitable for receiving Bone cement or the like osteosynthesis materials and advantages in the provide operational handling.
Die Lösung der Aufgabe der Erfindung erfolgt mit einem Implantat zur Stabilisierung der Vertebrae cervicales gemäß den Merkmalen nach Patentanspruch 1, wobei die Unteransprüche mindestens zweckmäßige Ausgestaltungen und Weiterbildungen darstellen. The object of the invention is achieved with an implant for stabilization the Vertebrae cervicales according to the features of claim 1, wherein the Subclaims at least useful refinements and developments represent.
Konkret wird bei dem Implantat von einem metallischen Körper mit einem im wesentlichen U-förmigen Querschnitt ausgegangen, wobei in den Schenkeln in an sich bekannter Weise eine Vielzahl von Ausnehmungen eingebracht ist und die oberen und unteren Endflächen des metallischen Körpers Arretierungsvorsprünge oder -zacken aufweisen. Specifically, the implant has a metallic body with an im essentially U-shaped cross-section, with in the legs in known a variety of recesses is introduced and the upper and lower end surfaces of the metallic body locking projections or have spikes.
Erfindungsgemäß besitzt der metallische Implantatkörper über seine Längsachse eine ventralkonvexe Krümmung, wobei Abschnitte der seitlichen Schenkel nach außen gerichtete Befestigungskrallen umfassen. Weiterhin besteht die Möglichkeit, am Implantatkörper Solltrennstellen zum bedarfsweisen Anpassen respektive Kürzen vorzusehen. According to the invention, the metallic implant body has along its longitudinal axis a ventral-convex curvature, with portions of the lateral legs following include externally directed fastening claws. There is also the possibility Separation points on the implant body for adapting or shortening as required provided.
Die Krümmung des Implantatkörpers in Längserstreckungsrichtung entspricht der natürlichen Lordose, wobei die Möglichkeit besteht, ein Set von Implantaten unterschiedlicher Krümmungsradien und/oder -länge für den jeweiligen operativen Einsatz vorrätig zu halten. The curvature of the implant body in the longitudinal direction corresponds to that natural lordosis, with the possibility of a set of implants different radii and / or lengths of curvature for the respective operative Keep the stock in stock.
Die Befestigungskrallen können bevorzugt durch Ausstanzen oder Fräsen ausgebildet werden und besitzen bevorzugt die Form einer Zunge. Die Zungenspitze ist nach außen gekröpft und weist eine Schneidenform auf. Mit Hilfe der Befestigungskrallen, die über ein geeignetes Werkzeug nach außen gebogen werden können, kann das Implantat im umgebenden Wirbelkörpermaterial fixiert und auf diese Weise zusätzlich zu den Arretierungsvorsprüngen befestigt werden. The fastening claws can preferably be formed by punching out or milling are and preferably have the shape of a tongue. The tip of the tongue is behind cranked on the outside and has a cutting shape. With the help of the fastening claws, that can be bent outwards using a suitable tool can do that The implant is fixed in the surrounding vertebral body material and in this way in addition to the locking projections.
Die Befestigungskrallen sind in den seitlichen Schenkeln jeweils gegenüberliegend oder versetzt gegenüberliegend angeordnet bzw. dort ausgebildet. Die vorerwähnten Zungen erstrecken sich in Richtung der Öffnung des U-förmigen Querschnitts und können so weit nach außen gebogen werden, dass die Zungenspitze die Umhüllende des metallischen Körpers nach außen durchdringt, um das gewünschte Befestigen im umgebenden Knochenmaterial zu erreichen. The fastening claws are opposite each other in the side legs or arranged offset or formed opposite one another. The The aforementioned tongues extend towards the opening of the U-shaped Cross section and can be bent outwards so far that the Tip of the tongue penetrates the envelope of the metallic body to the outside to achieve the desired fastening in the surrounding bone material.
Bevorzugt ist das Verhältnis der Breite der seitlichen Schenkel zur Breite des Schenkelverbindungsabschnitts im wesentlichen im Bereich von 1,3 bis 2 zu 1 liegend. The ratio of the width of the lateral legs to the width of the Leg connecting section substantially in the range of 1.3 to 2 to 1 lying.
In einer Ausführungsform der Erfindung besitzen die Arretierungsvorsprünge oder -zacken die Form von Bogenspitzen. In one embodiment of the invention, the locking projections or -serrate the shape of bow tips.
Die Erfindung soll anhand eines Ausführungsbeispiels sowie unter Zuhilfenahme von Figuren näher erläutert werden. The invention is based on an embodiment and with the help of Figures are explained in more detail.
Hierbei zeigen: Here show:
Fig. 1 eine Seitenansicht des Implantats zur Stabilisierung der Vertebrae cervicales; Fig. Cervicales 1 is a side view of the implant to stabilize the vertebrae;
Fig. 2 eine Rückseitenansicht des Implantats und Fig. 2 is a rear view of the implant and
Fig. 3 eine Schnittdarstellung längs der in Fig. 1 gekennzeichneten Linie. Fig. 3 is a sectional view taken along the line marked in Fig. 1.
Das bevorzugt aus einem metallischen Material gefertigte Implantat 1 besitzt, wie in der Seitenansicht nach Fig. 1 erkennbar, eine ventralkonvexe Krümmung, die dem Verlauf der Halswirbel folgt. Der Querschnitt des Implantats 1 ist, wie in Fig. 3 erkennbar, im wesentlichen U-förmig, wobei die seitlichen Schenkel 2 eine Vielzahl von Ausnehmungen, z. B. nach Art kreisrunder Bohrungen 3 umfassen. The implant 1 , which is preferably made of a metallic material, has, as can be seen in the side view according to FIG. 1, a ventral-convex curvature which follows the course of the cervical vertebrae. The cross section of the implant 1 is, as can be seen in Fig. 3, substantially U-shaped, the side legs 2 having a plurality of recesses, for. B. in the manner of circular holes 3 include.
Weiterhin sind in den seitlichen Schenkeln 2 nach außen gerichtete Befestigungskrallen 4 vorgesehen, die z. B. durch Ausstanzen gebildet werden können. Die Befestigungskrallen 4 besitzen eine Zungenform, wobei die Zungenspitze 5 nach außen gekröpft ist und eine Schneidengestalt aufweist (siehe Fig. 3). Furthermore, outward-facing fastening claws 4 are provided in the side legs 2 , which, for. B. can be formed by punching. The fastening claws 4 have a tongue shape, the tongue tip 5 being cranked outwards and having a cutting shape (see FIG. 3).
Die Befestigungskrallen 4 können in den seitlichen Schenkeln 2 jeweils gegenüberliegend oder versetzt gegenüberliegend angeordnet werden. The fastening claws 4 can in each case be arranged opposite one another or offset opposite one another in the lateral legs 2 .
Die vorerwähnten kreisrunden Bohrungen 3 befinden sich nicht nur in den seitlichen Schenkeln 2, sondern auch im Verbindungsabschnitt 6 zwischen diesen Schenkeln 2, wie dies Fig. 2 zeigt. The aforementioned circular bores 3 are not only in the side legs 2 , but also in the connecting section 6 between these legs 2 , as shown in FIG. 2.
Die Länge des Implantats 1 erstreckt sich über mehrere Wirbel bzw. besitzt ein solches maximales Maß und kann entlang von nicht gezeigten Solltrennstellen verkürzt, d. h. an die jeweiligen Erfordernisse angepasst werden. The length of the implant 1 extends over a plurality of vertebrae or has such a maximum dimension and can be shortened along predetermined separation points (not shown), ie adapted to the respective requirements.
Die in der Fig. 3 besonders deutlich zu erkennenden Befestigungskrallen 4 mit Zungenspitze 5 können durch ein Spreizwerkzeug nach außen gedrückt werden, und zwar derart, dass die Zungenspitze 5 die gedachte Umhüllende des metallischen Implantatkörpers nach außen durchdringt, um ein Arretieren im umgebenden Wirbelknochen zu erreichen. The fastening claws 4 with the tongue tip 5, which can be seen particularly clearly in FIG. 3, can be pressed outwards by a spreading tool, in such a way that the tongue tip 5 penetrates the imaginary envelope of the metallic implant body to the outside in order to achieve a locking in the surrounding vertebral bone ,
An den Endseiten des Implantats 1 sind bogenspitzenförmige Arretierungsvorsprünge oder -zacken 7 vorhanden, die ebenfalls der Befestigung des Implantats im bzw. am jeweiligen Wirbel dienen. On the end sides of the implant 1 there are arc-shaped locking projections or prongs 7 which also serve to fasten the implant in or on the respective vertebra.
Den besonderen anatomischen Verhältnissen im Halswirbelbereich Rechnung tragend, ist das Implantat 1 schmal und langgestreckt geformt, wobei das Verhältnis der Breite der seitlichen Schenkel 2 zur Breite des Schenkelverbindungsabschnitts 6 im wesentlichen im Bereich von 1,3 bis 2 zu 1 liegt. Taking the special anatomical conditions in the cervical vertebrae into account, the implant 1 is narrow and elongated, the ratio of the width of the side legs 2 to the width of the leg connection section 6 being essentially in the range from 1.3 to 2 to 1.
Das Ausführungsbeispiel geht von einem metallischen Implantatkörper aus, jedoch
sind auch Körper aus anderen Materialien, insbesondere kohlefaserverstärkten
Kunststoffen verwendbar.
Bezugszeichenliste
1 Implantat
2 seitlicher Schenkel
3 kreisrunde Bohrungen
4 Befestigungskralle
5 Zungenspitze
6 Verbindungsabschnitt
7 Arretierungsvorsprünge oder -zacken
The exemplary embodiment is based on a metallic implant body, but bodies made of other materials, in particular carbon fiber-reinforced plastics, can also be used. LIST OF REFERENCES 1 implant
2 side legs
3 circular holes
4 fastening claws
5 tongue tip
6 connecting section
7 locking projections or prongs
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10240653A DE10240653A1 (en) | 2001-10-31 | 2002-09-04 | Implant for stabilizing of vertebrae of cervical spine, comprising pointed tongues protruding from side sections |
DE20221710U DE20221710U1 (en) | 2001-10-30 | 2002-09-04 | Implant for stabilization of vertebrae cervical, has body comprising ventral convex curvature over its longitudinal axis, where sections of shank comprise outwardly aligned fastening claws and curvature corresponds to lordosis |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20117773U DE20117773U1 (en) | 2001-10-31 | 2001-10-31 | Implant to stabilize the vertebrae cervicales |
DE10240653A DE10240653A1 (en) | 2001-10-31 | 2002-09-04 | Implant for stabilizing of vertebrae of cervical spine, comprising pointed tongues protruding from side sections |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10240653A1 true DE10240653A1 (en) | 2003-05-22 |
Family
ID=7963453
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20117773U Expired - Lifetime DE20117773U1 (en) | 2001-10-30 | 2001-10-31 | Implant to stabilize the vertebrae cervicales |
DE20221710U Expired - Lifetime DE20221710U1 (en) | 2001-10-30 | 2002-09-04 | Implant for stabilization of vertebrae cervical, has body comprising ventral convex curvature over its longitudinal axis, where sections of shank comprise outwardly aligned fastening claws and curvature corresponds to lordosis |
DE10240653A Ceased DE10240653A1 (en) | 2001-10-30 | 2002-09-04 | Implant for stabilizing of vertebrae of cervical spine, comprising pointed tongues protruding from side sections |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20117773U Expired - Lifetime DE20117773U1 (en) | 2001-10-30 | 2001-10-31 | Implant to stabilize the vertebrae cervicales |
DE20221710U Expired - Lifetime DE20221710U1 (en) | 2001-10-30 | 2002-09-04 | Implant for stabilization of vertebrae cervical, has body comprising ventral convex curvature over its longitudinal axis, where sections of shank comprise outwardly aligned fastening claws and curvature corresponds to lordosis |
Country Status (1)
Country | Link |
---|---|
DE (3) | DE20117773U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD779065S1 (en) | 2014-10-08 | 2017-02-14 | Nuvasive, Inc. | Anterior cervical bone plate |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008039429A2 (en) * | 2006-09-22 | 2008-04-03 | Alphatec Spine, Inc. | Vertebral body replacement |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
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CH674709A5 (en) * | 1988-04-27 | 1990-07-13 | Sulzer Ag | |
CA2034126C (en) * | 1991-01-14 | 2001-12-25 | Robin Black | Spinal support plates |
DE9114118U1 (en) * | 1991-11-13 | 1992-01-02 | Howmedica GmbH, 2314 Schönkirchen | Supports for the human spine |
CA2149221C (en) * | 1992-11-12 | 2005-02-08 | Neville Alleyne | Cardiac protection device |
WO1994028813A1 (en) * | 1993-06-11 | 1994-12-22 | Hillway Surgical Limited | Surgical implant |
DE4323034C1 (en) * | 1993-07-09 | 1994-07-28 | Lutz Biedermann | Placeholders, especially for an intervertebral disc |
FR2715293B1 (en) * | 1994-01-26 | 1996-03-22 | Biomat | Vertebral interbody fusion cage. |
DE4416605C1 (en) * | 1994-05-11 | 1995-06-08 | Aesculap Ag | Inter-vertebral implant |
FR2719763B1 (en) * | 1994-05-11 | 1996-09-27 | Jean Taylor | Vertebral implant. |
DE9413778U1 (en) * | 1994-08-26 | 1996-01-04 | Schäfer micomed GmbH, 73614 Schorndorf | Intervertebral implant |
WO1996014809A1 (en) * | 1994-11-16 | 1996-05-23 | Atlas Implants | Implant for the fusion of two adjacent bony bodies, particularly two consecutive vertebrae |
FR2733413B1 (en) * | 1995-04-27 | 1997-10-17 | Jbs Sa | CERVICAL CAGE DEVICE FOR PERFORMING INTERSOMATIC ARTHRODESIS |
NZ272994A (en) * | 1995-09-12 | 2001-06-29 | C G Surgical Ltd | Spinal prosthesis device which stabilises lamina after laminoplasty |
US5749916A (en) * | 1997-01-21 | 1998-05-12 | Spinal Innovations | Fusion implant |
DE59710623D1 (en) * | 1997-09-30 | 2003-09-25 | Ct Pulse Orthopedics Ltd | Tubular support body for bridging two vertebrae |
DE29720022U1 (en) * | 1997-11-12 | 1998-01-15 | SCHÄFER micomed GmbH, 73035 Göppingen | Intervertebral implant |
DE19818143A1 (en) * | 1998-04-23 | 1999-10-28 | Medinorm Ag | Device for connecting vertebrae of the spine |
DE19826619A1 (en) * | 1998-06-17 | 1999-12-30 | Ulrich Gmbh & Co Kg | Implant for the fusion of two vertebrae |
US6146382A (en) * | 1998-09-23 | 2000-11-14 | Spinal Concepts, Inc. | Occipito-cervical stabilization system and method |
EP0995404A1 (en) * | 1998-10-20 | 2000-04-26 | Industrias Quirurgicas De Levante | Cervical plate |
US6206923B1 (en) * | 1999-01-08 | 2001-03-27 | Sdgi Holdings, Inc. | Flexible implant using partially demineralized bone |
DE19952939A1 (en) * | 1999-11-03 | 2001-05-10 | Tutogen Medical Gmbh | Bone material implant |
US6293949B1 (en) * | 2000-03-01 | 2001-09-25 | Sdgi Holdings, Inc. | Superelastic spinal stabilization system and method |
FR2808995B1 (en) * | 2000-05-18 | 2003-02-21 | Aesculap Sa | INTERSOMATIC CAGE WITH UNIFIED GRAFT |
-
2001
- 2001-10-31 DE DE20117773U patent/DE20117773U1/en not_active Expired - Lifetime
-
2002
- 2002-09-04 DE DE20221710U patent/DE20221710U1/en not_active Expired - Lifetime
- 2002-09-04 DE DE10240653A patent/DE10240653A1/en not_active Ceased
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD779065S1 (en) | 2014-10-08 | 2017-02-14 | Nuvasive, Inc. | Anterior cervical bone plate |
USD798455S1 (en) | 2014-10-08 | 2017-09-26 | Nuvasive, Inc. | Anterior cervical bone plate |
Also Published As
Publication number | Publication date |
---|---|
DE20221710U1 (en) | 2007-03-08 |
DE20117773U1 (en) | 2003-03-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |