DE10127924C1 - Spinal vertebra replacement prosthetic has base body and distraction body provided with cooperating distraction threads for adjustment of relative spacing between their contact surfaces - Google Patents

Spinal vertebra replacement prosthetic has base body and distraction body provided with cooperating distraction threads for adjustment of relative spacing between their contact surfaces

Info

Publication number
DE10127924C1
DE10127924C1 DE10127924A DE10127924A DE10127924C1 DE 10127924 C1 DE10127924 C1 DE 10127924C1 DE 10127924 A DE10127924 A DE 10127924A DE 10127924 A DE10127924 A DE 10127924A DE 10127924 C1 DE10127924 C1 DE 10127924C1
Authority
DE
Germany
Prior art keywords
distraction
thread
vertebral replacement
drive
body according
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
Application number
DE10127924A
Other languages
German (de)
Inventor
Thomas Kossmann
Heinz Redl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aesculap AG
Original Assignee
Aesculap AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aesculap AG filed Critical Aesculap AG
Priority to DE10127924A priority Critical patent/DE10127924C1/en
Priority to DE20109599U priority patent/DE20109599U1/en
Application granted granted Critical
Publication of DE10127924C1 publication Critical patent/DE10127924C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30721Accessories
    • A61F2/30744End caps, e.g. for closing an endoprosthetic cavity
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    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special 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
    • A61F2/4611Special 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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    • A61F2/00Filters 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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    • A61F2002/30331Connections 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
    • A61F2002/30362Connections 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
    • A61F2002/3037Translation along the common longitudinal axis, e.g. piston
    • A61F2002/30372Translation along the common longitudinal axis, e.g. piston with additional means for limiting said translation
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    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30405Connections 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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    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30518Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
    • A61F2002/30523Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts by means of meshing gear teeth
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    • A61F2002/30518Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
    • A61F2002/30523Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts by means of meshing gear teeth
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4635Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor using minimally invasive surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4637Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • A61F2002/4638Tools for performing screwing, e.g. nut or screwdrivers, or particular adaptations therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033Connections 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017Angular shapes

Abstract

The prosthetic (10) has base body (16) and a distraction body (18), each having a contact surface engaging an adjacent vertebra and provided with cooperating distraction threads allowing their relative movement in the distraction direction, under control of a drive (56,58,34) for rotation of the distraction thread of the base body about an axis parallel to the distraction direction.

Description

Die Erfindung betrifft einen Wirbelersatzkörper mit ei­ nem eine erste Kontaktfläche zur Anlage an einen be­ nachbarten Wirbelkörper umfassenden Grundkörper und mit einem eine zweite Kontaktfläche zur Anlage an einen be­ nachbarten Wirbelkörper umfassenden Distraktionskörper, wobei der Grundkörper ein erstes Distraktionsgewinde und der Distraktionskörper ein zum ersten Distraktions­ gewinde korrespondierendes zweites Distraktionsgewinde zum Relativbewegen des Grundkörpers und des Distrakti­ onskörpers in einer Distraktionsrichtung umfaßt, wobei das erste Distraktionsgewinde am Grundkörper um eine zur Distraktionsrichtung parallele Distraktionsdrehach­ se rotierbar gelagert ist und wobei das zweite Distrak­ tionsgewinde drehfest am Distraktionskörper angeordnet ist.The invention relates to a vertebral replacement body with egg nem a first contact surface for contact with a be neighboring vertebral body and with a a second contact surface for contact with a be neighboring distraction body, the base body having a first distraction thread and the distraction body to the first distraction corresponding second distraction thread for the relative movement of the body and the distracti body in a distraction direction, wherein the first distraction thread on the body by one Distraction rotation parallel to the direction of distraction se is rotatably mounted and the second distrak tion thread rotatably arranged on the distraction body is.

In Folge einer Fraktur der Wirbelsäule oder zur Behand­ lung von Tumoren werden häufig ein oder mehrere Wirbel­ körper entfernt. Als Wirbelersatzkörper ausgebildete Implantate dienen dann dazu, den aufgrund der Entfer­ nung entstandenen Substanzverlust im wesentlichen aus­ zugleichen und die ursprüngliche axiale Stabilität der Wirbelsäule wiederherzustellen. As a result of a spinal fracture or for treatment Tumors often become one or more vertebrae body removed. Trained as a vertebral replacement body Implants are then used because of the distance loss of substance essentially arises equalize and the original axial stability of the To restore spine.  

Ein Wirbelersatzkörper der eingangs beschriebenen Art ist beispielsweise aus der DE 196 22 827 A1 bekannt. Er besteht aus einem hülsenförmigen Grundkörper, in dem längsverschieblich ein hülsenförmiger Distraktionskör­ per gelagert ist. Zum Erzeugen einer Relativbewegung ist ein Gewindering vorgesehen, der mit einem auf dem Distraktionskörper vorgesehenen Außengewinde ver­ schraubbar ist und gleichzeitig am Grundkörper anliegt. Zum Distrahieren wird der Gewindering gedreht.A vertebral replacement body of the type described in the introduction is known for example from DE 196 22 827 A1. He consists of a sleeve-shaped body in which a sleeve-shaped distraction body is stored by. To generate a relative movement a threaded ring is provided, which with a on the Distraction body provided external thread ver is screwable and at the same time abuts the base body. The threaded ring is turned for distraction.

Ein Nachteil dieses Wirbelersatzkörpers ist es, daß zum Drehen des Gewinderings ein relativ großer Operations­ zugang erforderlich ist, denn ein Operateur muß entwe­ der den Gewindering mit der Hand bewegen oder mit einem Werkzeug in dafür vorgesehene Werkzeugaufnahmen ein­ greifen, die in radialer Richtung des Gewinderings an­ geordnet sind.A disadvantage of this vertebral replacement body is that Turning the threaded ring is a relatively large operation Access is required because an operator must either who move the threaded ring by hand or with one A tool in the designated tool holders attack in the radial direction of the threaded ring are ordered.

Daher ist es Aufgabe der vorliegenden Erfindung, einen Wirbelersatzkörper der eingangs beschriebenen Art so zu verbessern, daß die beiden Kontaktflächen besonders einfach voneinander weg bewegt werden können.It is therefore an object of the present invention to Vertebral replacement bodies of the type described at the beginning improve that the two contact surfaces especially can be easily moved away from each other.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine Getriebeeinheit vorgesehen ist zum Antreiben einer Rotation des ersten Distraktionsgewindes.This object is achieved in that a gear unit is provided for driving a Rotation of the first distraction thread.

Mit einer solchen Getriebeeinheit ist es möglich, ein Antriebsdrehmoment auf das erste Distraktionsgewinde zu übertragen, und zwar, indem das Antriebsdrehmoment in beliebiger Richtung in das Getriebe eingeleitet wird. Auf diese Weise kann bei besonders kleinen Operations­ zugängen der Wirbelersatzkörper auf einfache Weise di­ strahiert werden. Darüber hinaus ist es möglich, bei Kenntnis des Über- oder Untersetzungsverhältnisses des Getriebes, eine Distraktionskraft zu ermitteln. Ferner besitzt ein solcher Wirbelersatzkörper gegenüber dem in der DE 196 22 827 A1 beschriebenen den Vorteil, daß ei­ ne Verringerung des Kontaktflächenabstandes gezielt durch eine gegenläufige Rotation des ersten Distrakti­ onsgewindes ermöglicht, und nicht nur allein durch auf die von den benachbarten Wirbelkörpern auf die Kontakt­ flächen ausgeübten Kräfte bewirkt wird.With such a gear unit, it is possible to Drive torque to the first distraction thread transmitted, by the drive torque in is initiated in any direction in the transmission. In this way, especially small operations access of the vertebral replacement body in a simple way di  be extracted. In addition, it is possible to Knowledge of the gear ratio of the Gearbox to determine a distraction force. Further has such a vertebral replacement body compared to the in DE 196 22 827 A1 described the advantage that egg targeted reduction of the contact surface distance by counter-rotating the first distracti ons thread and not only by on that of the neighboring vertebral bodies on the contact forces exerted on surfaces.

Günstig ist es, wenn die Getriebeeinheit ein erstes, am Grundkörper um eine Antriebsachse rotierbar gelagertes Antriebselement zur Einleitung eines Antriebsdrehmo­ ments und ein zweites, mit dem ersten Distraktionsge­ winde drehfest verbundenes, um die Distraktionsdrehach­ se gelagertes, direkt oder indirekt vom ersten An­ triebselement angetriebenes Antriebselement umfaßt. Ei­ ne solche Ausgestaltung erleichtert das Einleiten eines Antriebsdrehmoments, beispielsweise über eine Antriebs­ element, die insbesondere bei minimalinvasiven chirur­ gischen Eingriffen vorzugsweise flexibel ausgestaltet ist, um insbesondere einen möglichst kleinen Operati­ onszugang zu eröffnen. Bei rotierenden Antriebselemen­ ten läßt sich darüber hinaus eine Distraktionskraft be­ sonders einfach berechnen.It is advantageous if the gear unit a first, on Base body mounted rotatably about a drive axis Drive element for initiating a drive torque and a second one, with the first distraction area winch rotatably connected to the distraction swivel se stored, directly or indirectly from the first drive element comprises driven drive element. egg Such an arrangement facilitates the initiation of a Drive torque, for example via a drive element, particularly in minimally invasive surgery Interventions preferably designed flexibly is, in particular, to operate as small as possible open access. With rotating drive elements A distraction force can also be used easy to calculate.

Grundsätzlich kann vorgesehen sein, daß die Getriebe­ einheit ein Winkelgetriebe umfaßt und daß die Antriebs­ achse und die Distraktionsdrehachse einen von 0 oder 180 Grad abweichenden Winkel einschließen. Mit einer derartigen Getriebeeinheit kann das Antriebsdrehmoment quasi um die Ecke herum gelenkt werden. Dies ermöglicht das Einleiten eines Antriebsdrehmoments unter einem be­ liebigen Winkel bezogen auf eine Längsachse des Wirbel­ ersatzkörpers.Basically, it can be provided that the gear Unit includes an angular gear and that the drive axis and the distraction axis of rotation one of 0 or Include an angle of 180 degrees. With a Such a gear unit can drive torque be directed around the corner. this makes possible  the initiation of a drive torque under a be arbitrary angle related to a longitudinal axis of the vertebra spare body.

Vorzugsweise weist der eingeschlossene Winkel einen Wert von 90 Grad auf. Das erforderliche Antriebsdrehmo­ ment kann somit senkrecht zur Distraktionsrichtung ein­ geleitet werden. Dadurch ist für einen späteren Distraktions- oder aber auch Entnahmevorgang des Wir­ belersatzkörpers lediglich ein sehr kleiner Operations­ zugang erforderlich, um eine Antriebswelle einzuführen.The included angle preferably has a Value of 90 degrees. The required drive torque can therefore be perpendicular to the direction of distraction be directed. This is for a later one Distraction or removal process of the we only a very small operation access required to insert a drive shaft.

Vorteilhafterweise umfaßt das erste Antriebselement ei­ ne Antriebsschnecke und das zweite Antriebselement ein an die Antriebsschnecke angepaßtes Schneckenzahnrad. Durch ein solches Schneckengetriebe kann insbesondere bei Vorsehung einer Gewindespindel zwischen dem Grund­ körper und dem Distraktionskörper, eine sehr hohe Un­ tersetzung erreicht werden, so daß durch geringe An­ triebsdrehmomente hohe Distraktionskräfte erzielt wer­ den können.The first drive element advantageously comprises egg ne drive screw and the second drive element worm gear adapted to the drive worm. Such a worm gear can in particular if a threaded spindle is provided between the bottom body and the distraction body, a very high Un translation can be achieved so that by low An driving torques high distraction forces achieved that can.

Gemäß einer bevorzugten Ausführungsform der Erfindung kann vorgesehen sein, daß die Getriebeeinheit zwischen dem ersten und dem zweiten Antriebselement untersetzt ist. Auf diese Weise können durch geringe Antriebs­ drehmomente große Distraktionskräfte übertragen werden.According to a preferred embodiment of the invention can be provided that the gear unit between the first and the second drive element is. In this way, by low drive large distraction forces are transmitted.

Günstig ist es, wenn das erste Antriebselement eine in Richtung der Antriebsachse weisende Antriebswellenauf­ nahme aufweist. Damit lassen sich Antriebsdrehmomente direkt in Richtung der Antriebsachse in die Getriebe­ einheit einleiten. It is expedient if the first drive element has an in Drive shafts pointing in the direction of the drive axis shows. This allows drive torques directly in the direction of the drive axis in the gearbox initiate unit.  

Grundsätzlich kann die Antriebswellenaufnahme beliebig ausgebildet sein, beispielsweise auch durch einen Vor­ sprung. Günstig ist es jedoch, wenn die Antriebswellen­ aufnahme einen Innensechskant umfaßt. Somit kann auch mit einem herkömmlichen Sechskantschlüssel die Getrie­ beeinheit angetrieben werden.Basically, the drive shaft holder can be any be formed, for example by a pre Leap. However, it is favorable if the drive shafts Includes a hexagon socket. So can also the gearbox with a conventional hexagon wrench be unit driven.

Denkbar wäre es, das erste Distraktionsgewinde in Form eines Innengewindes und das zweite Distraktionsgewinde in Form eines Außengewindes auszubilden. Vorteilhaft ist es jedoch, wenn ein Spindelantrieb mit einer Gewin­ despindel und mit einer Gewindehülse vorgesehen ist und wenn die Gewindespindel das erste Distraktionsgewinde in Form eines Außengewindes und wenn die Gewindehülse das zweite Distraktionsgewinde in Form eines Innenge­ windes umfaßt. Diese Anordnung macht es möglich, daß die beiden Kontaktflächen bei einer Relativbewegung in Distraktionsrichtung nicht gegeneinander verdreht wer­ den. Eine solche Anordnung ist der oben beschriebenen kinematischen Umkehrlösung mit einer angetriebenen Ge­ windehülse gegenüber gleichwertig.It would be conceivable to shape the first distraction thread an internal thread and the second distraction thread to form in the form of an external thread. Advantageous it is, however, when a spindle drive with a win despindel and is provided with a threaded sleeve and if the lead screw is the first distraction thread in the form of an external thread and if the threaded sleeve the second distraction thread in the form of an internal thread includes winds. This arrangement makes it possible for the two contact surfaces during a relative movement in Distraction direction not twisted against each other the. Such an arrangement is that described above kinematic reversal solution with a driven Ge equivalent to wind sleeve.

Grundsätzlich kann es vorteilhaft sein, wenn mindestens ein Sicherungselement zum Fixieren einer Relativpositi­ on zwischen dem Grundkörper und dem Distraktionskörper vorgesehen ist. Damit kann ein vom Operateur einge­ stellter Abstand zwischen den beiden Kontaktflächen ge­ gen ein unerwünschtes Zusammenschieben oder Auseinan­ derziehen gesichert werden.In principle, it can be advantageous if at least a securing element for fixing a relative position on between the base body and the distraction body is provided. This can be used by the surgeon distance between the two contact surfaces an undesirable pushing together or apart be secured.

Vorzugsweise wird das mindestens eine Sicherungselement durch eine Klemmschraube zum Sichern der beiden Di­ straktionsgewinde gebildet. Damit läßt sich eine Rela­ tivposition der beiden Distraktionsgewinde direkt si­ chern.The at least one securing element is preferably with a clamping screw to secure the two di  traction thread formed. With this a Rela tive position of the two distraction threads directly si manuals.

Bei einer anderen bevorzugten Ausführungsform kann vor­ gesehen sein, daß das mindestens eine Sicherungselement durch einen Deckel zum Fixieren des ersten Antriebsele­ ments gebildet wird. Diese indirekte Sicherung hat zu­ sätzlich den Vorteil, daß auch das Antriebselement ge­ schützt und je nach Ausgestaltung der Getriebeeinheit, verschlossen werden kann.In another preferred embodiment, before be seen that the at least one securing element through a cover for fixing the first drive element is formed. This indirect backup has too additional the advantage that the drive element ge protects and, depending on the design of the gear unit, can be locked.

Um einen optimalen Heilungsprozeß zu gewährleisten, ist es günstig, wenn die Kontaktflächen jeweils eine im we­ sentlichen anatomisch angepaßte, konvex gewölbte Form aufweisen.To ensure an optimal healing process is it is favorable if the contact surfaces each one in the we considerable anatomically adapted, convex shape exhibit.

Um ein Verwachsen der Kontaktflächen mit den benachbar­ ten Wirbelkörpern zu verbessern und ein seitliches Aus­ treten des Wirbelersatzkörpers aus der Wirbelsäule zu verhindern, ist es günstig, wenn die Kontaktflächen im wesentlichen in Distraktionsrichtung abstehende Fixie­ rungsvorsprünge aufweisen.In order for the contact surfaces to grow together with the neighboring ones ten vertebral bodies to improve and a lateral extension the vertebral replacement body comes out of the spine prevent it is favorable if the contact surfaces in the Fixie protruding essentially in the direction of distraction have projections.

Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung kann vorgesehen sein, daß am Grundkörper min­ destens ein Führungselement und am Distraktionskörper mindestens ein korrespondierendes Führungsglied vorge­ sehen sind, die eine Bewegung des Distraktionskörpers relativ zum Grundkörper in Distraktionsrichtung führen. Dadurch wird die Stabilität des Wirbelersatzkörpers insgesamt erhöht, insbesondere eine Rotation des Di­ straktionskörpers relativ zum Grundkörper kann auf die­ se Weise verhindert werden.According to a further preferred embodiment of the Invention can be provided that min preferably a guide element and on the distraction body featured at least one corresponding leader are seeing a movement of the distraction body lead relative to the base body in the direction of distraction. This improves the stability of the vertebral body overall increased, especially a rotation of the Di  traction body relative to the base body can on the be prevented.

Dabei ist es günstig, wenn das mindestens eine Füh­ rungselement eine im wesentlichen zylindrische Hülse und wenn das mindestens eine Führungsglied eine im we­ sentlichen zylindrische Säule umfaßt, wobei der Innen­ durchmesser der Hülse und der Außendurchmesser der Säu­ le so gewählt sind, daß eine im wesentlichen spielfreie und reibungsfreie Translationsbewegung in Distsrakti­ onsrichtung ermöglicht wird. Eine zylindrische Säule und eine korrespondierende Hülse lassen sich besonders einfach herstellen und verringern gleichzeitig die Ge­ fahr eines Verkantens von Führungselement und Führungs­ glied.It is beneficial if at least one foot tion element a substantially cylindrical sleeve and if the at least one leader is one in the we substantial cylindrical column, the inside diameter of the sleeve and the outer diameter of the column le are chosen so that an essentially backlash-free and smooth translation movement in Distsrakti direction is made possible. A cylindrical column and a corresponding sleeve can be special easy to manufacture and at the same time reduce the Ge driving a tilting of the guide element and guide element.

Nachfolgende Beschreibung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:The following description serves in connection with the Drawing of the detailed explanation. Show it:

Fig. 1 eine Explosionsdarstellung eines Wirbeler­ satzkörpers; Figure 1 is an exploded view of a vortex set body.

Fig. 2 eine Seitenansicht des in Fig. 1 dargestell­ ten Wirbelersatzkörpers; Fig. 2 is a side view of the vertebra replacement body shown in Fig. 1;

Fig. 3 eine weitere Seitenansicht des in Fig. 1 dargestellten Wirbelersatzkörpers mit teil­ weiser Querschnittsansicht; und . Fig. 3 is a further side view of the vertebral replacement body shown in Figure 1 with part wise cross-sectional view; and

Fig. 4 eine Querschnittsansicht längs Linie 4-4 in Fig. 2. Fig. 4 is a cross sectional view taken along line 4-4 in Fig. 2.

In den Fig. 1 bis 4 ist ein insgesamt mit dem Be­ zugszeichen 10 versehenes Implantat dargestellt, das als Wirbelersatzkörper zwischen zwei benachbarte Wir­ belkörper 12 und 14 eingesetzt werden kann. Es besteht im wesentlichen aus zwei Teilen, nämlich einem Grund­ körper 16 und einem Distraktionselement 18, die jeweils ein Anlageelement 20 beziehungsweise 22 aufweisen, wel­ che voneinander weg weisend eine gewölbte, im wesentli­ chen durch einen Zylinderoberflächenausschnitt gebilde­ te Kontaktflächen 24 beziehungsweise 26 aufweisen, die mit einer Vielzahl aneinander angrenzender Vorsprünge in Form von quadratischen Pyramiden 28 bedeckt sind.In FIGS. 1 to 4, a total of reference symbols with the Be implant 10 provided is illustrated as adjacent vertebral replacement body between two We can be used belkörper 12 and 14. It consists essentially of two parts, namely a base body 16 and a distraction element 18 , each having an abutment element 20 or 22 , which face away from each other an arched, essentially by a cylinder surface cutout te contact surfaces 24 and 26 , respectively are covered with a plurality of adjacent projections in the form of square pyramids 28 .

Am Anlageelement 20 des Grundkörpers 16 ist eine eine Rotationsachse senkrecht zur Kontaktfläche 24 aufwei­ sende Spindelhülse 30 angeordnet, in der eine Gewinde­ spindel 32 rotierbar, aber in Längsrichtung derselben unverschieblich, gelagert ist. Die Rotationsachse defi­ niert dabei die Distraktionsrichtung. An ihrem dem An­ lageelement 20 zugewandten Ende ist an der Gewindespin­ del 32 ein Schneckenrad 34 drehfest angeordnet. An die­ ses schließt sich ein glatter zylindrischer Schaftab­ schnitt 36 an, dessen äußerer Durchmesser kleiner ist als der Außendurchmesser des Schneckenrads 34. Auf etwa zwei Drittel ihrer Gesamtlänge ist die Gewindespindel 32 an den Schaftabschnitt 36 anschließend mit einem Au­ ßengewinde 38 versehen, das zu einem Innengewinde 40 einer senkrecht vom Anlageelement 22 abstehenden Di­ straktionshülse 42 korrespondiert. Der Außendurchmesser der Distraktionshülse 42 ist unwesentlich kleiner als der Innendurchmesser der Spindelhülse 30, so daß die beiden Hülsen 30 und 42 gegenseitig eine Führung in Richtung ihrer Symmetrieachsen bilden, die im wesentli­ chen senkrecht zu den Kontaktflächen 24 und 26 orien­ tiert sind.On the contact element 20 of the base body 16 is a rotational axis perpendicular to the contact surface 24 aufwei sending spindle sleeve 30 is arranged, in which a threaded spindle 32 is rotatable, but is non-displaceable in the longitudinal direction thereof. The axis of rotation defines the direction of distraction. At its end facing element 20, a worm wheel 34 is arranged in a rotationally fixed manner on the threaded spindle del 32 . A smooth cylindrical shaft section 36 adjoins this, the outer diameter of which is smaller than the outer diameter of the worm wheel 34 . On about two thirds of its total length, the threaded spindle 32 on the shaft portion 36 is then provided with an external thread 38 which corresponds to an internal thread 40 of a vertical protruding sleeve 42 projecting from the contact element 22 . The outer diameter of the distraction sleeve 42 is insignificantly smaller than the inner diameter of the spindle sleeve 30 , so that the two sleeves 30 and 42 mutually form a guide in the direction of their axes of symmetry, which are oriented essentially perpendicular to the contact surfaces 24 and 26 .

Parallel zur Distraktionshülse 42 sind am Distraktions­ element 18 symmetrisch Zylinderstäbe 44 und 46 angeord­ net, und zwar derart, daß sie jeweils in eine Führungs­ hülse 48 beziehungsweise 50 des Grundkörpers 16 eintau­ chen können. Die beiden Führungshülsen 48 und 50 gren­ zen mit ihren Außenflächen an die Spindelhülse 30 an. Im Verbindungsbereich ist quer zu den Symmetrieachsen der Führungshülsen 48 und 50 zwischen diesen und der Spindelhülse jeweils ein langlochförmiger Schlitz 52 beziehungsweise 54 angeordnet. Durch diesen kann bei eingesetztem Implantat 10 Spongiosagewebe hindurchwach­ sen und eine knöcherne Verwachsung des Implantats 10 mit den benachbarten Wirbelkörpern bilden.Parallel to the distraction sleeve 42 are on the distraction element 18 symmetrical cylinder rods 44 and 46 angeord net, in such a way that they can each dive into a guide sleeve 48 or 50 of the base body 16 . The two guide sleeves 48 and 50 limit the outer surfaces of the spindle sleeve 30 . In the connection area, an elongated slot-shaped slot 52 and 54 is arranged transversely to the axes of symmetry of the guide sleeves 48 and 50 between them and the spindle sleeve. With this implant, 10 cancellous tissue can pass through when the implant is inserted and form a bony overgrowth of the implant 10 with the adjacent vertebral bodies.

Um das Einwachsen des Implantats 10 zusätzlich zu ver­ bessern, ist das Anlageelement 20 mit die Spindelhülse 30 halbkreisförmig umgebenden Durchgangsbohrungen 68 versehen.In order to improve the ingrowth of the implant 10 in addition to ver, the contact element 20 is provided with the spindle sleeve 30 semicircular surrounding bores 68 .

Die Führungshülsen 48 und 50 gehen in Richtung auf das Anlageelement 20 hin in eine quer zu deren Längsachse verlaufenden Getriebekasten 56 über, der eine im we­ sentlichen halbzylindrische Außenfläche aufweist. Im Getriebekasten 56 ist frei rotierbar eine Gewinde­ schnecke 58 gelagert, die auf nahezu ihrer gesamten Länge mit einem an das Schneckenrad 34 angepaßten Schneckengewinde 60 versehen ist. Der in seinem Inneren hohlzylindrisch ausgeformte Getriebekasten 56 weist ein offenes Ende 62 auf, über das ein mit einem Innensechs­ kant 64 versehener Kopf 66 der Gewindeschnecke 58 zu­ gänglich ist.The guide sleeves 48 and 50 merge in the direction of the contact element 20 into a gear box 56 which runs transversely to the longitudinal axis thereof and which has an essentially semicylindrical outer surface. In the gear box 56 is free to rotate a threaded screw 58 which is provided on almost its entire length with an adapted to the worm wheel 34 worm thread 60th The gearbox 56 , which is hollow-cylindrical in its interior, has an open end 62 , via which a head 66 of the screw worm 58 provided with a hexagon socket 64 is accessible.

Das freie Ende 62 des Getriebekastens 56 kann mit einem nicht dargestellten Deckel verschlossen werden, der in den Innensechskant 64 der Gewindeschnecke 58 eingreift und diese blockiert.The free end 62 of the gearbox 56 can be closed with a cover, not shown, which engages in the hexagon socket 64 of the threaded screw 58 and blocks it.

Zum Einsetzen des Implantats 10 wird dieses zunächst so vorbereitet, daß die beiden Kontaktflächen 24 und 26 den geringsten Abstand voneinander aufweisen. Bei einem minimal invasiven Eingriff reicht zum Einführen des Im­ plantats 10 ein Operationszugang, der im wesentlichen dem Außendurchmesser einer der Kontaktflächen 24 oder 26 entspricht. Das Implantat 10 wird zwischen zwei Wir­ belkörper 12 und 14 eingesetzt, und über eine in den Innensechskant 64 eingesetzte Antriebswelle 70 wird die Gewindeschnecke angetrieben. Dadurch wird die Gewinde­ spindel 32 in Drehung versetzt, was zu einer Translati­ onsbewegung des Distraktionselements 18 relativ zum Grundkörper 16 in Distraktionsrichtung führt. Die An­ triebswelle 70 kann von Hand oder motorisch angetrieben werden, sie kann insbesondere auch flexibel ausgestal­ tet sein.To insert the implant 10 , it is first prepared in such a way that the two contact surfaces 24 and 26 are at the smallest distance from one another. In the case of a minimally invasive intervention, an operation access that essentially corresponds to the outer diameter of one of the contact surfaces 24 or 26 is sufficient to insert the implant 10 . The implant 10 is inserted between two belbodies 12 and 14 , and the threaded screw is driven via a drive shaft 70 inserted into the hexagon socket 64 . As a result, the threaded spindle 32 is set in rotation, which leads to a translational movement of the distraction element 18 relative to the base body 16 in the distraction direction. At the drive shaft 70 can be driven by hand or by motor, it can in particular also be flexibly designed.

Sind die beiden Wirbelkörper 12 und 14 in der gewünsch­ ten Weise mittels des Implantats 10 voneinander distra­ hiert, wird der Getriebekasten 56 mit einem Deckel ver­ schlossen und so die Relativposition zwischen den Anla­ geelementen 20 und 22 fixiert. Are the two vertebral bodies 12 and 14 distra hated from each other in the desired manner by means of the implant 10 , the gearbox 56 is closed with a cover ver and so the relative position between the Anla geelemente 20 and 22 fixed.

Die Schlitze 52 und 54 werden mit Spongiosagewebe durchfüttert, ebenso freie Abschnitte zwischen den Zy­ linderstäben 44, 46 und der Distraktionshülse 42.The slots 52 and 54 are lined with cancellous tissue, as well as free sections between the cylinder rods 44 , 46 and the distraction sleeve 42nd

Über eine Messung des angeleiteten Antriebsdrehmoments, beispielsweise über einen Drehmomentschlüssel, läßt sich direkt bei Kenntnis des Untersetzungsverhältnisses von Gewindeschnecke 58, Schneckenrad 34 und Gewinde­ spindel 32 eine Distraktionskraft ermitteln.By measuring the guided drive torque, for example using a torque wrench, a distraction force can be determined directly with knowledge of the reduction ratio of the screw worm 58 , worm wheel 34 and threaded spindle 32 .

Claims (16)

1. Wirbelersatzkörper mit einem eine erste Kontakt­ fläche zur Anlage an einen benachbarten Wirbel­ körper umfassenden Grundkörper und mit einem eine zweite Kontaktfläche zur Anlage an einen benach­ barten Wirbelkörper umfassenden Distraktionskör­ per, wobei der Grundkörper ein erstes Distrakti­ onsgewinde und der Distraktionskörper ein zum er­ sten Distraktionsgewinde korrespondierendes zwei­ tes Distraktionsgewinde zum Relativbewegen des Grundkörpers und des Distraktionskörpers in einer Distraktionsrichtung umfaßt, wobei das erste Di­ straktionsgewinde am Grundkörper um eine zur Di­ straktionsrichtung parallele Distraktionsdrehach­ se rotierbar gelagert ist und wobei das zweite Distraktionsgewinde drehfest am Distraktionskör­ per angeordnet ist, dadurch gekennzeichnet, daß eine Getriebeeinheit (56, 58, 34) vorgesehen ist zum Antreiben einer Rotation des ersten Distrak­ tionsgewindes (38).1. vertebral replacement body with a base body comprising a first contact surface for contacting an adjacent vertebral body and with a distraction body comprising a second contact surface for contacting an adjacent vertebral body, the base body having a first distraction thread and the distraction body being a first distraction thread Corresponding two th distraction thread for relative movement of the base body and the distraction body in a distraction direction, wherein the first distraction thread on the base body is rotatably mounted about a distraction direction parallel to the distraction direction and wherein the second distraction thread is rotatably arranged on the distraction body, characterized in that a gear unit ( 56 , 58 , 34 ) is provided for driving a rotation of the first distraction thread ( 38 ). 2. Wirbelersatzkörper nach Anspruch 1, dadurch ge­ kennzeichnet, daß die Getriebeeinheit (56, 58, 34) ein erstes, am Grundkörper (16) um eine An­ triebsachse rotierbar gelagertes Antriebselement (58) zur Einleitung eines Antriebsdrehmoments und ein zweites, mit dem ersten Distraktionsgewinde (38) drehfest verbundenes, um die Distraktions­ drehachse rotierbar gelagertes, direkt oder indi­ rekt vom ersten Antriebselement (58) angetriebe­ nes Antriebselement (34) umfaßt. 2. vertebral replacement body according to claim 1, characterized in that the gear unit ( 56 , 58 , 34 ) a first, on the base body ( 16 ) about a drive axis rotatably mounted drive element ( 58 ) for initiating a drive torque and a second, with the first Distraction thread ( 38 ) rotatably connected, rotatably mounted about the distraction axis of rotation, directly or indirectly from the first drive element ( 58 ) driven nes drive element ( 34 ). 3. Wirbelersatzkörper nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Getriebe­ einheit ein Winkelgetriebe (56, 58, 34) umfaßt und daß die Antriebsachse und die Distraktions­ drehachse einen von 0 oder 180° abweichenden Win­ kel einschließen.3. vertebral replacement body according to one of claims 1 or 2, characterized in that the gear unit comprises an angular gear ( 56 , 58 , 34 ) and that the drive axis and the distraction axis of rotation include an angle deviating from 0 or 180 °. 4. Wirbelersatzkörper nach Anspruch 3, dadurch ge­ kennzeichnet, daß der eingeschlossene Winkel ei­ nen Wert von 90° aufweist.4. vertebral replacement body according to claim 3, characterized ge indicates that the included angle ei has a value of 90 °. 5. Wirbelersatzkörper nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß das erste An­ triebselement eine Antriebsschnecke (58) und daß das zweite Antriebselement ein an die Antriebs­ schnecke angepaßtes Schneckenzahnrad (34) umfaßt.5. vertebral replacement body according to one of claims 2 to 4, characterized in that the first drive element to a drive worm ( 58 ) and that the second drive element comprises a worm gear adapted to the drive worm gear ( 34 ). 6. Wirbelersatzkörper nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Getriebeein­ heit (56, 58, 34) zwischen dem ersten (58) und dem zweiten Antriebselement (34) untersetzt ist.6. vertebral replacement body according to one of claims 2 to 5, characterized in that the gear unit ( 56 , 58 , 34 ) between the first ( 58 ) and the second drive element ( 34 ) is reduced. 7. Wirbelersatzkörper nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß das erste An­ triebselement (58) eine in Richtung der Antriebs­ achse weisende Antriebswellenaufnahme (64) auf­ weist.7. vertebral replacement body according to one of claims 2 to 6, characterized in that the first drive element ( 58 ) has an axis pointing in the direction of the drive shaft shaft ( 64 ). 8. Wirbelersatzkörper nach Anspruch 7, dadurch ge­ kennzeichnet, daß die Antriebswellenaufnahme ei­ nen Innensechskant (64) umfaßt. 8. vertebral replacement body according to claim 7, characterized in that the drive shaft receptacle comprises a hexagon socket ( 64 ). 9. Wirbelersatzkörper nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß ein Spin­ delantrieb mit einer Gewindespindel (32) und mit einer Gewindehülse (42) vorgesehen ist und daß die Gewindespindel (32) das erste Distraktionsge­ winde in Form eines Außengewindes (38) und daß die Gewindehülse (42) das zweite Distraktionsge­ winde in Form eines Innengewindes (40) umfaßt.9. vertebral replacement body according to one of the preceding claims, characterized in that a spin delantrieb with a threaded spindle ( 32 ) and with a threaded sleeve ( 42 ) is provided and that the threaded spindle ( 32 ) the first Distraktionsge thread in the form of an external thread ( 38 ) and that the threaded sleeve ( 42 ) comprises the second Distraktionsge thread in the form of an internal thread ( 40 ). 10. Wirbelersatzkörper nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß mindestens ein Sicherungselement zum Fixieren einer Relativ­ position zwischen dem Grundkörper (16) und dem Distraktionskörper (18) vorgesehen ist.10. vertebral replacement body according to one of the preceding claims, characterized in that at least one securing element for fixing a relative position between the base body ( 16 ) and the distraction body ( 18 ) is provided. 11. Wirbelersatzkörper nach Anspruch 10, dadurch ge­ kennzeichnet, daß das mindestens eine Sicherungs­ element durch eine Klemmschraube zum Sichern der beiden Distraktionsgewinde (38, 40) gebildet wird.11. vertebral replacement body according to claim 10, characterized in that the at least one securing element is formed by a clamping screw for securing the two distraction threads ( 38 , 40 ). 12. Wirbelersatzkörper nach einem der Ansprüche 10 oder 11, dadurch gekennzeichnet, daß das minde­ stens eine Sicherungselement durch einen Deckel zum Fixieren des ersten Antriebselements (58) ge­ bildet wird.12. vertebral replacement body according to one of claims 10 or 11, characterized in that the at least one securing element is formed by a cover for fixing the first drive element ( 58 ) ge. 13. Wirbelersatzkörper nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Kon­ taktflächen (24, 26) jeweils eine im wesentlichen anatomisch angepaßte, konvex gewölbte Form auf­ weisen. 13. Vertebral replacement body according to one of the preceding claims, characterized in that the contact surfaces Kon ( 24 , 26 ) each have an essentially anatomically adapted, convexly curved shape. 14. Wirbelersatzkörper nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Kon­ taktflächen (24, 26) im wesentlichen in Distrak­ tionsrichtung abstehende Fixierungsvorsprünge (28) aufweisen.14. vertebral replacement body according to one of the preceding claims, characterized in that the contact surfaces Kon ( 24 , 26 ) substantially in the distraction direction protruding fixing projections ( 28 ). 15. Wirbelersatzkörper nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß am Grund­ körper (16) mindestens ein Führungselement (48, 50) und am Distraktionskörper (18) mindestens ein korrespondierendes Führungsglied (44, 46) vorge­ sehen sind, die eine Bewegung des Distraktions­ körpers (18) relativ zum Grundkörper in Distrak­ tionsrichtung (16) führen.15. vertebral replacement body according to one of the preceding claims, characterized in that on the base body ( 16 ) at least one guide element ( 48 , 50 ) and on the distraction body ( 18 ) at least one corresponding guide member ( 44 , 46 ) are easily seen, the movement of Guide distraction body ( 18 ) relative to the base body in the direction of distraction ( 16 ). 16. Wirbelersatzkörper nach Anspruch 15, dadurch ge­ kennzeichnet, daß das mindestens eine Führungs­ element eine im wesentlichen zylindrische Hülse (48, 50) und daß das mindestens eine Führungs­ glied eine im wesentlichen zylindrische Säule (44, 46) umfaßt, wobei der Innendurchmesser der Hülse (48, 50) und der Außendurchmesser der Säule (44, 46) so gewählt sind, daß eine im wesentli­ chen spielfreie und reibungsfreie Translationsbe­ wegung in Distraktionsrichtung ermöglicht wird.16. vertebral replacement body according to claim 15, characterized in that the at least one guide element comprises a substantially cylindrical sleeve ( 48 , 50 ) and that the at least one guide member comprises a substantially cylindrical column ( 44 , 46 ), the inner diameter of the Sleeve ( 48 , 50 ) and the outer diameter of the column ( 44 , 46 ) are chosen so that a substantially movement-free and friction-free translation movement in the direction of distraction is made possible.
DE10127924A 2001-06-08 2001-06-08 Spinal vertebra replacement prosthetic has base body and distraction body provided with cooperating distraction threads for adjustment of relative spacing between their contact surfaces Expired - Fee Related DE10127924C1 (en)

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DE20109599U DE20109599U1 (en) 2001-06-08 2001-06-08 Spine replacement body

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1459710A2 (en) * 2003-03-15 2004-09-22 Ulrich GmbH & Co. KG Implant for insertion between two vertebral bodies of the spine
WO2004100837A1 (en) * 2003-05-14 2004-11-25 Kilian Kraus Height-adjustable implant to be inserted between vertebral bodies and corresponding handling tool
EP1491165A1 (en) * 2003-06-23 2004-12-29 Franz Rennebaum Vertebral prosthesis
DE10324108B3 (en) * 2003-05-21 2005-01-27 Aesculap Ag & Co. Kg Backbone implant is inserted with contracted contact disc which is expanded to optimum area following insertion
WO2005055887A3 (en) * 2003-12-11 2005-08-25 Deltacor Gmbh Length-adjustable implant for the vertebral column
WO2010120782A2 (en) * 2009-04-13 2010-10-21 Biospine, Llc Variable height intervertebral devices and methods for use
US8292963B2 (en) 2009-04-23 2012-10-23 Warsaw Orthopedic, Inc. Expandable implant for supporting skeletal structures
US8992617B2 (en) 2007-03-13 2015-03-31 DePuy Synthes Products, LLC Adjustable intervertebral implant
US9700425B1 (en) 2011-03-20 2017-07-11 Nuvasive, Inc. Vertebral body replacement and insertion methods
US9808354B2 (en) 2014-01-17 2017-11-07 Stryker European Holdings I, Llc Implant insertion tool

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7018415B1 (en) * 2002-09-23 2006-03-28 Sdgi Holdings, Inc. Expandable spinal fusion device and methods of promoting spinal fusion
CA2508666C (en) * 2002-12-06 2011-02-15 Synthes (U.S.A.) Intervertebral implant
DE10361166A1 (en) * 2003-12-22 2005-07-28 Meisel, Jörg, Dr. Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622827A1 (en) * 1996-06-07 1997-12-11 Ulrich Heinrich Implant to be inserted between the vertebral body as a placeholder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622827A1 (en) * 1996-06-07 1997-12-11 Ulrich Heinrich Implant to be inserted between the vertebral body as a placeholder

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1459710A2 (en) * 2003-03-15 2004-09-22 Ulrich GmbH & Co. KG Implant for insertion between two vertebral bodies of the spine
EP1459710A3 (en) * 2003-03-15 2004-12-29 Ulrich GmbH & Co. KG Implant for insertion between two vertebral bodies of the spine
WO2004100837A1 (en) * 2003-05-14 2004-11-25 Kilian Kraus Height-adjustable implant to be inserted between vertebral bodies and corresponding handling tool
US8568482B2 (en) 2003-05-14 2013-10-29 Kilian Kraus Height-adjustable implant to be inserted between vertebral bodies and corresponding handling tool
DE10324108B3 (en) * 2003-05-21 2005-01-27 Aesculap Ag & Co. Kg Backbone implant is inserted with contracted contact disc which is expanded to optimum area following insertion
EP1491165A1 (en) * 2003-06-23 2004-12-29 Franz Rennebaum Vertebral prosthesis
US7909870B2 (en) 2003-12-11 2011-03-22 Tpl - Kilian Kraus Height-adjustable spinal implant and operating instrument for the implant
US8267998B2 (en) 2003-12-11 2012-09-18 Kilian Kraus Operating instrument for a height-adjustable spinal implant
WO2005055887A3 (en) * 2003-12-11 2005-08-25 Deltacor Gmbh Length-adjustable implant for the vertebral column
US8992617B2 (en) 2007-03-13 2015-03-31 DePuy Synthes Products, LLC Adjustable intervertebral implant
WO2010120782A3 (en) * 2009-04-13 2010-12-23 Biospine, Llc Variable height intervertebral devices and methods for use
WO2010120782A2 (en) * 2009-04-13 2010-10-21 Biospine, Llc Variable height intervertebral devices and methods for use
US8840669B2 (en) 2009-04-13 2014-09-23 Biomet Spine, Llc Variable height intervertebral devices and methods for use
US8292963B2 (en) 2009-04-23 2012-10-23 Warsaw Orthopedic, Inc. Expandable implant for supporting skeletal structures
US9700425B1 (en) 2011-03-20 2017-07-11 Nuvasive, Inc. Vertebral body replacement and insertion methods
US10485672B2 (en) 2011-03-20 2019-11-26 Nuvasive, Inc. Vertebral body replacement and insertion methods
US11389301B2 (en) 2011-03-20 2022-07-19 Nuvasive, Inc. Vertebral body replacement and insertion methods
US9808354B2 (en) 2014-01-17 2017-11-07 Stryker European Holdings I, Llc Implant insertion tool
US10433982B2 (en) 2014-01-17 2019-10-08 Stryker European Holdings I, Llc Implant insertion tool

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