DE19509317B4 - Implant for insertion between vertebral bodies of the spine as a placeholder - Google Patents
Implant for insertion between vertebral bodies of the spine as a placeholder Download PDFInfo
- Publication number
- DE19509317B4 DE19509317B4 DE19509317A DE19509317A DE19509317B4 DE 19509317 B4 DE19509317 B4 DE 19509317B4 DE 19509317 A DE19509317 A DE 19509317A DE 19509317 A DE19509317 A DE 19509317A DE 19509317 B4 DE19509317 B4 DE 19509317B4
- Authority
- DE
- Germany
- Prior art keywords
- implant
- implant part
- central
- terminal
- parts
- 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
- 239000007943 implant Substances 0.000 title claims abstract description 216
- 238000003780 insertion Methods 0.000 title claims abstract description 8
- 230000037431 insertion Effects 0.000 title claims abstract description 8
- 230000013011 mating Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 239000002639 bone cement Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000011164 ossification Effects 0.000 description 2
- 230000010478 bone regeneration Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
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- 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
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
-
- A—HUMAN NECESSITIES
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- 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
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- 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
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- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
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- 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
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- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30364—Rotation about the common longitudinal axis
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
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- 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
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- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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- 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
- A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0006—Rounded shapes, e.g. with rounded corners circular
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0065—Three-dimensional shapes toroidal, e.g. ring-shaped, doughnut-shaped
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
Implantat zum Einsetzen zwischen Wirbelkörper der Wirbelsäule als Platzhalter, bestehend aus zwei endständigen, zur Anlage an den angrenzenden Wirbeln bestimmten Implantatteilen (1, 2) und einem dazwischen befindlichen, mittigen Implantatteil (3), das mit den endständigen Implantatteilen (1, 2) jeweils drehbar um eine gemeinsame Achse (4) verbunden ist, wobei das mittige Implantatteil (3) mit einem der endständigen Implantatteile (1) in einem mit der Drehachse (4) koaxialen Gewinde (5) verschraubt ist, so daß durch Verdrehen des mittigen Implantatteils (3) die Länge des Implantats in Richtung der Drehachse (4) veränderbar ist, dadurch gekennzeichnet, daß die beiden miteinander verschraubten Implantatteile (1, 3) als rohrförmige Hülsen mit zumindest im Bereich des Gewindes (5) kreisförmigem Querschnitt und das andere endständige Implantatteil (2) als Stirnring ausgebildet sind, der axial unverschiebbar und drehbar an der Hülsenwand des mittigen Implantatteils (3) gelagert ist, und daß die Hülsenwände von Aussparungen (6) durchbrochen sind.implant for insertion between vertebral bodies The spine as a placeholder, consisting of two terminal, for abutment with the adjacent vertebrae certain implant parts (1, 2) and an intermediate, central implant part (3) connected to the terminal implant parts (1, 2) each rotatable about a common axis (4) is connected, wherein the central implant part (3) with one of the terminal implant parts (1) screwed in a coaxial with the axis of rotation (4) thread (5) is so through that Turning the central implant part (3) the length of the implant in the direction the axis of rotation (4) changeable is, characterized in that the both screwed together implant parts (1, 3) as tubular sleeves with at least in the region of the thread (5) of circular cross section and the other terminal ones Implant part (2) are designed as a front ring, the axially immovable and rotatable on the sleeve wall of the Central implant part (3) is mounted, and that the sleeve walls of recesses (6) broken are.
Description
Die Erfindung betrifft ein Implantat zum Einsetzen zwischen Wirbelkörper der Wirbelsäule als Platzhalter bestehend aus zwei endständigen, zur Anlage an den angrenzenden Wirbeln bestimmten Implantatteilen und einem dazwischen befindlichen, mittigen Implantatteil, das mit den endständigen Implantatteilen jeweils drehbar um eine gemeinsame Achse verbunden ist, wobei das mittige Implantatteil mit einem der endständigen Implantatteile in einem mit der Drehachse koaxialen Gewinde verschraubt ist, so daß durch Verdrehen des mittigen Implantatteils die Länge des Implantats in Richtung der Drehachse veränderbar ist.The The invention relates to an implant for insertion between the vertebral body of spinal column as a placeholder consisting of two terminal, to the plant to the adjacent Swirl certain implant parts and an intermediate, central Implant part, with the terminal Implant parts each rotatably connected about a common axis is, wherein the central implant part with one of the terminal implant parts screwed in a coaxial with the axis of rotation thread, so that by Rotate the central implant part the length of the implant in the direction the axis of rotation changeable is.
Implantate
dieser Art sind aus
In
der
Der Erfindung liegt die Aufgabe zugrunde, ein Implantat der eingangs genannten Art so auszubilden, daß es auf eine Mindestlänge einstellbar ist, die seine Verwendung als Zwischenwirbelplatzhalter zum Bandscheibenersatz ermöglicht, und daß es für die Induktion der Knochenbildung und Stimulation der Knochen besonders gut geeignet ist und daher nach der Implantation besonders leicht und schnell einwachsen kann.Of the Invention is based on the object, an implant of the above mentioned type so that it can be adjusted to a minimum length which is its use as an intervertebral space holder for disc replacement allows and that it for the Induction of bone formation and stimulation of bones especially is well suited and therefore particularly easy after implantation and can grow in quickly.
Diese Aufgabe wird nach der Erfindung bei einem Implantat mit den eingangs genannten Merkmalen dadurch gelöst, daß die beiden miteinander verschraubten Implantatteile als rohrförmige Hülsen mit zumindest im Bereich des Gewindes kreisförmigem Querschnitt und das andere endständige Implantatteil als Stirnring ausgebildet sind, der axial unverschiebbar und drehbar an der Hülsenwand des mittigen Implantatteils gelagert ist, und daß die Hülsenwände von Aussparungen durchbrochen sind.These Task is according to the invention in an implant with the above characterized in that that the two screwed together implant parts as tubular sleeves with at least in the region of the thread of circular cross section and the other terminal ones Implant part are designed as a front ring, the axially immovable and rotatable on the sleeve wall of the central implant part is mounted, and that the sleeve walls of recesses broken are.
Die erfindungsgemäße Ausbildung des Implantats aus zwei Hülsen und einem Stirnring läßt im Implantatinneren einen durchgehenden Hohlraum entstehen, der durch die in den Hülsenwänden befindlichen Aussparungen hindurch von mit der Implantataußenseite her zugänglich ist. Dies zusammen mit der Möglichkeit, den Hohlraum mit Knochenzement oder patienteneigenen oder fremden Knochenspänen zu füllen, läßt das Implantat schnell und zuverlässig einwachsen. Dennoch bleibt die Distraktionsmöglichkeit des Implantats während der Operation voll erhalten. Da das Implantat nur ein einziges Gewinde besitzt, ist die mögliche Mindestlänge, auf die das Implantat verkürzend zusammengeschraubt werden kann, durch die Gewindelänge nur dieses einen Gewindes bestimmt, denn beide hülsenförmigen Implantatteile können praktisch völlig ineinander geschraubt und der das andere endständige Implantatteil bildende Stirnring kann axial sehr niedrig ausgebildet werden, was insgesamt eine sehr niedrige Bauform ergibt, die die Verwendung des Implantats zum Bandscheibenersatz ermöglicht.The inventive training of the implant of two sleeves and a forehead ring leaves in the implant interior create a continuous cavity through which located in the sleeve walls Recesses therethrough accessible from the implant outside. This along with the possibility the cavity with bone cement or patient's own or foreign bone chips to fill, leaves the implant fast and reliable grow. Nevertheless, the possibility of distraction of the implant during the Operation fully preserved. Because the implant has only a single thread owns, is the possible one Minimum length, on which shortens the implant can be screwed together, by the thread length only This one thread determines, because both sleeve-shaped implant parts can be practical completely screwed together and forming the other terminal implant part Stirnring can be formed axially very low, which is a total a very low design yields the use of the implant allows for disc replacement.
Eine bevorzugte Ausführungsform des erfindungsgemäßen Implantats ist dadurch gekennzeichnet, daß das mittige Implantatteil das mit ihm verschraubte endständige Implantatteil außenseitig axial übergreift, wobei das Gewinde jeweils als Außengewinde auf dem endständigen Implantatteil und als Innengewinde im mittigen Implantatteil ausgebildet ist. Diese Anordnung hat zur Folge, daß das Außengewinde des endständigen Implantatteils nach außen hin durch die Hülsenwand des mittigen Implantatteils abgedeckt ist. Um im implantierten Zustand die Implantatteile gegen gegenseitiges Verdrehen zu sichern, kann das mittlere Implantatteil im Gewindebereich des endständigen Implantatteils mindestens eine radiale Gewindebohrung aufweisen, in der eine gegen das mit ihm verschraubte endständige Implantatteil verspannbare Klemmschraube geführt ist, die im verspannten Zustand beide Implantatteile gegeneinander fixiert.A preferred embodiment of the implant according to the invention is characterized in that the central implant part externally axially overlaps the terminal implant part screwed to it, wherein the thread is formed in each case as external thread on the terminal implant part and as internal thread in the central implant part is. This arrangement has the consequence that the external thread of the terminal implant part is covered outwardly through the sleeve wall of the central implant part. In order to secure the implant parts in the implanted state against mutual rotation, the middle implant part in the threaded portion of the end implant part have at least one radial threaded bore in which a screwed against the terminal implant part with it clampable clamping screw is guided, which fixes both implant parts against each other in the clamped state ,
Die axial unverschiebbare, aber ebenfalls drehbare Verbindung zwischen dem mittigen Implantatteil und dem zweiten endständigen Implantatteil ist vorzugsweise von einer in einer zur Drehachse senkrecht stehenden Ebene verlaufenden, koaxialen, radial offenen Ringnut am einen Implantatteil und aus einer in die Ringnut vorstehenden koaxialen Ringleiste am anderen Implantteil gebildet. Zweckmäßigerweise wird die Anordnung im einzelnen so getroffen, daß die radial nach außen offene Ringnut an einem axial vorstehenden Ringbund des mittigen Implantatteils und die radial nach innen gerichtete Ringleiste an einem den Ringbund außen umgreifenden, axialen Kragen des endständigen Implantatteils ausgebildet ist, wobei der Ringbund und die Ringleiste mit einander zugeordneten Kegelflächen versehen sind, über die beim axialen Zusammenstecken der beiden Implantatteile ein Einrasten der Ringleiste in die Ringnut möglich ist. Um das Zusammenstecken der beiden Implantatteile und ihr Einrasten bei der Montage weiter zu erleichtern, sind die am Ringbund und an der Ringleiste stirnseitigen Ränder der Kegelflächen zweckmäßigerweise konvex gerundet. Im übrigen ist die axiale Höhe des mittigen Implantatteils einschließlich des mit ihm axial unverschiebbar verbundenen endständigen Implantatteils vorzugsweise gleich der Hülsenlänge des anderen, mit dem mittigen Implantatteil verschraubten Implantatteils. Das Implantat kann dann durch Ineinanderschrauben beider hülsenförmigen Implantteile im wesentlichen bis auf die Hülsenlänge des endständigen Implantatteils verkürzt werden.The axially immovable, but also rotatable connection between the central implant part and the second end implant part is preferably from a plane perpendicular to the axis of rotation, coaxial, radially open annular groove on an implant part and from a in the annular groove projecting coaxial ring strip on the other implant part educated. Conveniently, the arrangement is made in detail so that the radially outwardly open Ring groove on an axially projecting annular collar of the central implant part and the radially inwardly directed annular strip on one of the annular collar Outside encompassing, axial collar of the terminal implant part formed is, with the annular collar and the ring bar associated with each other conical surfaces are provided over the snapping in the axial mating of the two implant parts the ring strip in the ring groove possible is. To the mating of the two implant parts and their engagement to facilitate the assembly on, are on the collar and on the annular strip frontal edges the conical surfaces expediently rounded convexly. Furthermore is the axial height the central implant part including the axially immovable with him connected terminal Implant part preferably equal to the sleeve length of the other, with the central Implant part screwed implant part. The implant can then by screwing both sleeve-shaped implant parts substantially down to the sleeve length of the terminal Implant part shortened become.
Eine weiter bevorzugte Ausführungsform ist dadurch gekennzeichnet, daß die beiden endständigen Implantatteile am jeweils vom mittigen Implantatteil abgewandten Ende mit einer ringförmigen Stirnplatte und diese Stirnplatten an ihrer Stirnfläche mit zum Eindringen in die angrenzenden Wirbel bestimmten Schneiden oder Spitzen versehen sind. Dadurch können die endständigen Implantatteile an den angrenzenden Wirbeln gegen ungewünschte Verlagerungen gesichert werden. Im einzelnen können die Schneiden an jeder Stirnplatte jeweils parallel zueinander verlaufen. Es besteht weiter die besonders vorteilhafte Möglichkeit, je Stirnplatte zwei Gruppen senkrecht zueinander verlaufender Schneiden vorzusehen, die im Kreuzungspunkt von jeweils zwei Schneiden pyramidenartige Spitzen bilden. Die Schneiden können auch radial verlaufen.A further preferred embodiment is characterized in that the both terminal Implant parts facing away from the central implant part End with an annular Face plate and these face plates on their face with the Intrusion into the adjoining vertebra certain cutting or Tips are provided. Thereby can the terminal ones Implant parts on the adjacent vertebrae against unwanted displacements be secured. In detail, you can the cutting edges on each face plate are parallel to each other. There is also the particularly advantageous possibility, per face plate two To provide groups of mutually perpendicular cutting edges, the at the intersection of two cutting pyramid-like Forming tips. The cutting can also run radially.
Nach einem weiteren Vorschlag der Erfindung besitzen die Stirnplatten beider endständigen Implantatteile und die äußere Umfangsfläche des mittigen Implantatteils den gleichen Außendurchmesser. Auch empfiehlt es sich, die Anordnung so zu treffen, daß der Innendurchmesser der Stirnplatte des axial unverschiebbar mit dem mittigen Implantatteil verbundenen endständigen Implantatteils gleich dem Außendurchmesser des mit dem mittigen Implantatteil verschraubten endständigen Implantatteils ist. Im übrigen empfiehlt es sich, daß zwischen der Stirnplatte und der Hülsenwand des mit dem mittigen Implantatteil verschraubten endständigen Implantatteils eine über den Umfang verlaufende Hohlkehle ausgebildet ist.To Another proposal of the invention have the face plates both terminal implant parts and the outer peripheral surface of the central Implant part the same outer diameter. It is also advisable to make the arrangement so that the inner diameter the face plate of the axially immovable with the central implant part connected terminal Implant part equal to the outer diameter of the screwed with the central implant part end implant part is. Furthermore It is recommended that between the face plate and the sleeve wall of the screwed with the central implant part end implant part one over the circumference extending groove is formed.
Bezüglich der Ausbildung und Anordnung der Aussparungen in den Hülsenwänden der miteinander verschraubten Implantatteile besteht im Rahmen der Erfindung eine gewisse Wahlfreiheit. Einerseits soll der von den Aussparungen insgesamt repräsentierte lichte Querschnitt möglichst groß sein, andererseits dürfen die Aussparungen die Gewindebereiche nicht unzulässig schwächen, damit die Festigkeit der Gewindeverbindung zwischen den Implantatteilen keine Beeinträchtigung erfährt. Im allgemeinen wird man dabei die Aussparungen als im Querschnitt kreisförmige Bohrungen oder als Langlöcher ausbilden. Zweckmäßigerweise sind die Aussparungen gleichmäßig über den Hülsenumfang verteilt und am mittigen Implantatteil als Schlüsselöffnungen zum Einstecken eines zum Verdrehen des mittigen Implantatteils dienenden Schlüssels ausgebildet. Die Aussparungen im mittigen Implantatteil können im lichten Querschnitt größer als im mit ihm verschraubten endständigen Implantatteil sein.Regarding the Training and arrangement of the recesses in the sleeve walls of the screwed together implant parts is within the scope of the invention a certain freedom of choice. On the one hand, the one of the recesses overall clear cross-section as possible be great, on the other hand allowed to the recesses weaken the threaded areas not unduly, so the strength the threaded connection between the implant parts no impairment experiences. In general, you will get the recesses as in cross section circular Form holes or as long holes. Conveniently, the recesses are evenly over the sleeve circumference distributed and at the central implant part as key openings for insertion of a formed to rotate the central implant part serving key. The recesses in the central implant part can be in clear cross section greater than in the screwed with him terminal Be implant part.
Im folgenden wird die Erfindung an einem in der Zeichnung dargestellten Ausführungsbeispiel näher erläutert; es zeigen:in the Next, the invention will be illustrated on a drawing embodiment explained in more detail; it demonstrate:
Das
in den
Das
mittige Implantatteil
Die
drehbare, axial unverschiebbare Verbindung zwischen dem mittigen
Implanttteil
Das
mittige Implantatteil
Die
beiden endständigen
Implantatteile
Die
Stirnplatten
Die
Aussparungen
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19509317A DE19509317B4 (en) | 1995-03-15 | 1995-03-15 | Implant for insertion between vertebral bodies of the spine as a placeholder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE19509317A DE19509317B4 (en) | 1995-03-15 | 1995-03-15 | Implant for insertion between vertebral bodies of the spine as a placeholder |
Publications (2)
Publication Number | Publication Date |
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DE19509317A1 DE19509317A1 (en) | 1996-09-19 |
DE19509317B4 true DE19509317B4 (en) | 2006-08-10 |
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DE19509317A Expired - Lifetime DE19509317B4 (en) | 1995-03-15 | 1995-03-15 | Implant for insertion between vertebral bodies of the spine as a placeholder |
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DE (1) | DE19509317B4 (en) |
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US8182537B2 (en) | 2007-10-30 | 2012-05-22 | Aesculap Implant Systems, Llc | Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine |
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CN101631516A (en) * | 2007-03-13 | 2010-01-20 | 新特斯有限责任公司 | Adjustable intervertebral implant |
US8591587B2 (en) | 2007-10-30 | 2013-11-26 | Aesculap Implant Systems, Llc | Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine |
US8425608B2 (en) | 2008-01-18 | 2013-04-23 | Warsaw Orthopedic, Inc. | Lordotic expanding vertebral body spacer |
CN102143722B (en) | 2008-09-04 | 2014-10-22 | 斯恩蒂斯有限公司 | Adjustable intervertebral implant |
RU2520799C1 (en) * | 2013-03-19 | 2014-06-27 | Общество с ограниченной ответственностью "ОРФО" | Telescopic vertebral prosthesis and method for implantation thereof |
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DE8016889U1 (en) * | 1980-09-18 | Waldemar Link (Gmbh & Co), 2000 Hamburg | Spacer for prosthetic vertebral body replacement | |
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EP0268115A1 (en) * | 1986-11-03 | 1988-05-25 | Lutz Biedermann | Space keeping device, especially for a vertebra |
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DE69319375T2 (en) * | 1992-04-24 | 1998-12-17 | Barbera Alacreu, Jose Vicente, Valencia | Vertebral prosthesis to replace a vertebra in malignant tumor surgery |
DE4423257C2 (en) * | 1994-07-02 | 2001-07-12 | Ulrich Heinrich | Implant to be inserted between the vertebral body of the spine as a placeholder |
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DE8016889U1 (en) * | 1980-09-18 | Waldemar Link (Gmbh & Co), 2000 Hamburg | Spacer for prosthetic vertebral body replacement | |
US4657550A (en) * | 1984-12-21 | 1987-04-14 | Daher Youssef H | Buttressing device usable in a vertebral prosthesis |
EP0268115A1 (en) * | 1986-11-03 | 1988-05-25 | Lutz Biedermann | Space keeping device, especially for a vertebra |
DE69319375T2 (en) * | 1992-04-24 | 1998-12-17 | Barbera Alacreu, Jose Vicente, Valencia | Vertebral prosthesis to replace a vertebra in malignant tumor surgery |
US5336223A (en) * | 1993-02-04 | 1994-08-09 | Rogers Charles L | Telescoping spinal fixator |
DE4423257C2 (en) * | 1994-07-02 | 2001-07-12 | Ulrich Heinrich | Implant to be inserted between the vertebral body of the spine as a placeholder |
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US8568482B2 (en) | 2003-05-14 | 2013-10-29 | Kilian Kraus | Height-adjustable implant to be inserted between vertebral bodies and corresponding handling tool |
US8337559B2 (en) | 2005-04-21 | 2012-12-25 | Globus Medical, Inc. | Expandable vertebral prosthesis |
US8182537B2 (en) | 2007-10-30 | 2012-05-22 | Aesculap Implant Systems, Llc | Vertebral body replacement device and method for use to maintain a space between two vertebral bodies within a spine |
US8142441B2 (en) | 2008-10-16 | 2012-03-27 | Aesculap Implant Systems, Llc | Surgical instrument and method of use for inserting an implant between two bones |
US8142435B2 (en) | 2009-02-19 | 2012-03-27 | Aesculap Implant Systems, Llc | Multi-functional surgical instrument and method of use for inserting an implant between two bones |
Also Published As
Publication number | Publication date |
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DE19509317A1 (en) | 1996-09-19 |
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