DE20320454U1 - Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge - Google Patents
Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge Download PDFInfo
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- DE20320454U1 DE20320454U1 DE2003220454 DE20320454U DE20320454U1 DE 20320454 U1 DE20320454 U1 DE 20320454U1 DE 2003220454 DE2003220454 DE 2003220454 DE 20320454 U DE20320454 U DE 20320454U DE 20320454 U1 DE20320454 U1 DE 20320454U1
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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
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
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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
- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/305—Snap connection
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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
- 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
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30556—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting thickness
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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
- 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
- A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
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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
- 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
- A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
- A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
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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
- 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
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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
- 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
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30649—Ball-and-socket joints
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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
- A61F2/30767—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
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
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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
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
- A61F2002/443—Intervertebral or spinal discs, e.g. resilient made of articulated components having two transversal endplates and at least one intermediate component
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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
- 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
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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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/0009—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting thickness
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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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
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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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
Abstract
Description
Die Erfindung liegt auf dem Gebiet von Bauteilen für eine Prothese, insbesondere einer Halswirbelsäulen-Bandscheibenprothese.The Invention is in the field of components for a prosthesis, in particular a cervical spinal disc prosthesis.
Prothesen auf Basis eines oder mehrerer Bauteile werden genutzt, um Teile des Knochenskeletts, beispielsweise die Wirbelsäule oder ein Gelenk, in ihrer Funktionalität zu unterstützen oder sogar zu ersetzen.prostheses based on one or more components are used to create parts of the bone skeleton, for example the spine or a joint in it functionality to support or even replace.
Degenerative Schäden an der Halswirbelsäule, die mit einem Bandscheibenvorfall einhergehen oder durch knöcherne Einengung das Rückenmark komprimieren, in aller Regel, wenn eine Operationsindikation vorliegt, von ventral operativ angegangen. Bei diesem operativen Zugang muß, um eine Entlastung des Rückenmarkes und der Nervenwurzel zu erzielen, die Halsbandscheibe vollständig entfernt werden. Dies geht bislang bei dem erwähnten operativen Vorgehen naturgemäß mit einem Funktionsverlust des betroffenen Bewegungssegmentes einher. Um einen zusätzlichen Höhenverlust der Bandscheibe, der von sich aus schon zu einer Zunahme der degenerativen und neurologischen Veränderungen führen kann, zu vermeiden, war bislang die ventrale Fusionsoperation die Methode der Wahl.degenerative damage on the cervical spine, that are associated with a herniated disc or due to bony narrowing the spinal cord compress, usually when there is an indication for surgery, from an anterior approach. With this operational access, in order to Relief of the spinal cord and to achieve the nerve root, the collar disc is completely removed become. So far, this has naturally resulted in a loss of function in the operational procedure mentioned of the affected movement segment. For an additional Loss of height of the Intervertebral disc that is inherently an increase in degenerative and neurological changes to lead to avoid, ventral fusion surgery has been the most common Method of choice.
Mit Hilfe von an die Bandscheibehöhe angepaßtem/n Knochenzement, Beckenkammknochen oder körbchenartigen Abstandshaltern – sogenannten Cages – wird hierbei zumindest die Bandscheibenhöhe rekonstruiert, wobei es weiteres Ziel dieses Vorgehens die knöcherne Fusion der Wirbelkörper des betroffenen Bewegungssegmentes ist. Diese hat den Nachteil, daß die Anschlußbewegungssegmente durch nach der Fusion einsetzender Hebelwirkung des geschaffenen Blockwirbels stärker als vorher in Mitleidenschaft gezogen werden, was einer zunehmenden Degeneration in diesen Anschlußsegmenten Vorschub leistet. Zukünftiges Ziel dieser Behandlungsmethodik ist bei geeigneter Indikation der segmentale Funktionserhalt durch eine Bandscheibenvollprothese.With Help of at the herniated disc matched / n Bone cement, pelvic crest bone or basket-like spacers - so-called Cages - will here at least the intervertebral disc height is reconstructed, whereby it Another goal of this procedure is the bony fusion of the vertebral bodies affected movement segment. This has the disadvantage that the connection movement segments through after the merger, leverage of the block vortex created stronger than previously affected, which is increasing Degeneration in these connection segments Feeds. future The aim of this treatment method is, if the indication is suitable segmental function maintenance through a full disc prosthesis.
Bisher vorgeschlagene Entwicklungen für Halswirbelsäule-Bandscheibenprothesen, die zu marktreifen Produkten geführt haben, sind in ihrem klinischen Einsatz nicht sehr weit verbreitet, weil aufwendige operative Vorbereitungen zur Implantation notwendig sind und diese mit irreversiblen Veränderungen an den Grund- und Deckplatten der betroffenen Wirbelkörper einhergehen. So müssen beispielsweise zum Einsatz der Prothese nach Bryan et al. Anteile der angrenzenden Wirbelkörper entfernt werden, um einerseits die Prothese zu fixieren, aber auch um das relativ hohe Implantat überhaupt zu interponieren. Grund für diese Höhenausdehnung dieses Implantats ist der sehr komplexe Aufbau, der eine Stoßdämpferfunktion erfüllt, und daß der Aufbau aus einer großen Anzahl von Einzelbauteilen besteht, die aus ver schiedenen Materialien gefertigt sind. Der Implantationsaufwand ist mit über 30 Implantationsinstrumenten besonders zeitaufwendig. Die spontane Fusionsrate nach Implantation kann mit postoperativen Kortisongaben reduziert werden.So far proposed developments for cervical spine disc prostheses, which led to marketable products are not very widespread in their clinical use, because complex surgical preparations for implantation are necessary are and these with irreversible changes to the basic and Cover plates of the affected vertebral bodies go hand in hand. For example on the use of the prosthesis according to Bryan et al. Shares of adjacent vertebra removed to fix the prosthesis on the one hand, but also about the relatively high implant at all to interpose. reason for this height expansion This implant is the very complex structure that has a shock absorber function Fulfills, and that the Building from a big one Number of individual components consists of different materials are made. The implantation effort is with over 30 implantation instruments particularly time consuming. The spontaneous fusion rate after implantation can be reduced with postoperative cortisone administration.
Aufgabe der Erfindung ist es, ein verbessertes Bauteil für eine Prothese anzugeben, das aufgrund seiner mechanischen Konstruktion eine dauerhafte und zuverlässige Funktion bei der Verwendung in einer Prothese gewährleistet und bei dem der Herstellungsaufwand vermindert ist. Darüber hinaus soll eine Prothese auf Basis der Bauteile mit möglichst geringem Aufwand implantiert werden können.task the invention is to provide an improved component for a prosthesis, that due to its mechanical construction a durable and reliable Function guaranteed when used in a prosthesis and in which the manufacturing cost is reduced. Furthermore a prosthesis based on the components should be implanted with as little effort as possible can be.
Diese Aufgabe wird erfindungsgemäß durch eine Bauteilanordnung nach dem unabhängigen Anspruch 1 und ein Grundbauteil nach dem unabhängigen Anspruch 15 gelöst. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus abhängigen Unteransprüchen.This The object is achieved by a Component arrangement according to the independent Claim 1 and a basic component according to independent claim 15 solved. advantageous Embodiments of the invention result from dependent subclaims.
Die Erfindung umfaßt den Gedanken, eine Bauteilanordnung für eine Prothese, insbesondere eine Halswirbelsäulen-Bandscheibenprothese, mit zwei Grundbauteilen zu bilden, die gelenkig miteinander gekoppelt sind, wobei auf einer jeweiligen Außenseite der zwei Grundbauteile eine anatomisch angepaßte Kontaktfläche gebildet ist. Mit Hilfe der Anatomisch angepaßten Kontaktfläche wird eine Implantation der Bauteilanordnung als Prothese im Skelett derart ermöglicht, daß die Prothese auf eine möglichst natürliche Weise in das Skelett integriert wird. Die anatomisch angepaßte Kontaktfläche unterstützt eine paßgenaue Integration der Prothese in das Skelett. Mit Hilfe der anatomisch angepaßten Kontaktfläche wird ein Verrutschen der Prothese behindert. Darüber hinaus wirkt das Anordnen des Knochens auf der anatomisch angepaßten Kontaktfläche bei der Implantieren der Prothese einer ungewünschten Verdrehung der Prothese relativ zu den Skelettknochen entgegen, die benachbart zur Prothese angeordnet sind, so daß eine stabile Lagerung der Prothese gefördert wird.The Invention includes the idea of a component arrangement for a prosthesis, in particular a Cervical disc prosthesis, to form with two basic components that are articulated together are, on a respective outside of the two basic components an anatomically adapted contact area is formed. With the help of the anatomically adapted contact surface an implantation of the component arrangement as a prosthesis in the skeleton allows that the Prosthesis on one if possible natural Way is integrated into the skeleton. The anatomically adapted contact surface supports one precisely fitting Integration of the prosthesis into the skeleton. With the help of anatomically adjusted contact area prevents the prosthesis from slipping. The arrangement also has an effect of the bone on the anatomically adapted contact surface implanting the prosthesis of an undesired twisting of the prosthesis relative to the skeletal bones that are adjacent to the prosthesis are arranged so that a stable storage of the prosthesis is promoted.
Durch die Ausbildung der Bauteilanordnung für die Prothese mit zwei Grundbauteilen, die gelenkig miteinander gekoppelt sind, ist ein mechanisch einfacher Aufbau gewählt.By the formation of the component arrangement for the prosthesis with two basic components, which are articulated, is mechanically simple Structure chosen.
Zweckmäßig kann vorgesehen sein, daß an den zwei Grundbauteilen jeweils eine Verdrehsicherung gebildet ist, um ein Verdrehen der Grundbauteile relativ zu dem bei der Implantation benachbart zu den Grundbauteilen angeordneten Knochenteilen zu verhindern. Die Verdrehsicherung umfaßt vorzugsweise einen auf der jeweiligen Außenseite der Grundbauteileangeordneten Steg, in dem zweckmäßig Durchbrüche vorgesehen sein können. In die Durchbrüche kann der Knochen hineinwachsen.It can expediently be provided that an anti-rotation device is formed on each of the two basic components in order to prevent the basic components from rotating relative to the bone parts arranged adjacent to the basic components during implantation. The anti-rotation device preferably comprises one on the respective outside of the Base components arranged web, in which openings can be expediently provided. The bone can grow into the openings.
Bei einer Ausgestaltung der Erfindung sind die beiden Grundbauteile mit Hilfe von Kopplungsbauteilen gelenkig gekoppelt. Die Kopplungsbauteile können in einer jeweiligen Aufnahme an den Grundbauteilen gelagert sein, wobei die Befestigung der Kopplungsbauteile an den Grundbauteilen zweckmäßig mit Hilfe einer Schnappverbindung oder einer anderen lösbaren Verbindung erfolgt.at An embodiment of the invention are the two basic components articulated with the help of coupling components. The coupling components can in of a respective receptacle on the basic components, wherein the attachment of the coupling components to the basic components with With the help of a snap connection or another detachable connection he follows.
Um die Verlagerbarkeit der beiden Grundbauteile relativ zueinander zu ermöglichen, was bei der Nutzung der Bauteilanordnung in einer implantierten Prothese dann die Beweglichkeit der Knochenteile zueinander erlaubt, kann vorgesehen sein, daß die beiden Grundbauteile mit Hilfe einer Gleitverbindung miteinander gekoppelt sind. Die Gleitverbindung wird bevorzugt mit Hilfe von Gleitflächen an den Kopplungsbauteilen ausgeführt. Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, daß eine der Gleitflächen auf einem abgerundeten Vorsprung an einem der Kopplungsbauteile gebildet ist. Beim Zusammenbau der Bauteilanordnung lagert die abgerundete Gleitfläche auf einer in ihrer Form hieran zweckmäßig angepaßten Gegengleitfläche.Around the relocability of the two basic components relative to one another to allow what when using the component assembly in an implanted Prosthesis then allows the mobility of the bone parts to each other, can be provided that the two basic components with the help of a sliding connection are coupled. The sliding connection is preferred with the help of sliding surfaces performed on the coupling components. An advantageous embodiment of the invention provides that one of the sliding surfaces a rounded projection is formed on one of the coupling components is. When assembling the component arrangement, the rounded one is stored sliding surface on a counter slide surface suitably adapted to this in its shape.
Um eine möglichst hohe Abriebfestigkeit der Gleitflächen zu erreichen, sind diese zweckmäßig aus einem Material auf Basis einer Chrom-Nickel-Legierung gebildet. Hierbei kann es sich um eine Materialbeschichtung handeln. Es kann auch vorgesehen sein, daß die Kopplungsbauteile ganz oder teilweise aus der Chrom-Nickel-Legierung hergestellt sind.Around one if possible To achieve high abrasion resistance of the sliding surfaces, these are expediently a material based on a chrome-nickel alloy. This can be a material coating. It can also be provided that the Coupling components made entirely or partially of the chrome-nickel alloy are made.
Als Material für die Herstellung der Grundbauteile wird in einer Ausführungsform der Erfindung bevorzugt ein Poly-Ether-Ether-Keton genutzt. Dieses Material hat den Vorteil, daß hierdurch ein zu kortikalen Knochen ähnliches Elastizitätsmodul zur Verfügung gestellt wird.As Material for the manufacture of the basic components is carried out in one embodiment the invention preferably used a polyether ether ketone. This Material has the advantage that this similar to cortical bone modulus of elasticity to disposal is provided.
Die Erfindung wird im folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf eine Zeichnung näher erläutert. Hierbei zeigen:The In the following, the invention is illustrated by means of exemplary embodiments closer to a drawing explained. Here show:
Für eine verbesserte
Verhinderung einer Dislokation der Bauteilanordnung relativ zum
Knochen kann eine Materialbeschichtung auf den anatomisch angepaßten Kontaktflächen
Auf
der Außenseite
Die
Grundbauteile
Die
Grundbauteile
Die
artikulierenden Gleitflächen
Die
beiden Grundbauteile
Die
Die beschriebenen Bauteile führen in Verbindung mit einer hierauf basierenden Halswirbelsäulen-Bandscheibenprothese zu den nachfolgend genannten Vorteilen gegenüber bekannten Prothesen: Rekonstruktion der Segmentbeweglichkeit; Rekonstruktion der individuellen Halswirbelsäulen-Lordose durch mögliche unterschiedliche Winkelung der Implantate; Rekonstruktion der individuellen Bandscheibenhöhe durch mögliche unterschiedliche Implantathöhen (modulare Systemtechnik); operativ-technische Vereinfachung des Vorgehens zur Einbringung des Implantates; Reduktion der Implantatkosten durch Zwei-Material-Technik und Modular-Technik; ermöglichte Anpassung der Prothesenform an die vorbestehenden anatomischen Verhältnisse; Vermeidung einer frühen Spontanfusion und dislokationssichere Implantation.The described components in connection with a cervical spinal disc prosthesis based on this on the advantages mentioned below compared to known prostheses: reconstruction the segment mobility; Reconstruction of the individual cervical spine lordosis possible different angulation of the implants; Reconstruction of the individual Disc height through possible different implant heights (modular system technology); operational-technical simplification of the Procedure for inserting the implant; Reduction of implant costs through Two-material technology and modular technology; enables adaptation of the prosthesis shape the existing anatomical conditions; Avoid early spontaneous fusion and dislocation-safe implantation.
Das Implantationsinstrumentarium bei Verwendung einer Prothese auf Basis der beschriebnen Bauteile kann einfach gehalten werden und sieht neben Anpassungsdistraktoren und einem Implantathalter beispielsweise nur eine Deckplattenkürette und spezielle Halswirbelsäulen- Stanzen vor, die in der Lage sind, auch bei geringer Distraktion des Bewegungssegmentes eine knöcherne Dekompression auf der Dorsalseite des Wirbelkanals vorzunehmen.The Implantation instruments when using a prosthesis based the described component can be kept simple and looks in addition to adjustment distractors and an implant holder, for example just a cover plate curette and special cervical spine punching that are able, even with slight distraction of the movement segment a bony Decompression on the dorsal side of the spinal canal.
Die in der vorstehenden Beschreibung, den Ansprüchen und der Zeichnung offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen von Bedeutung sein.The disclosed in the above description, the claims and the drawing Features of the invention can both individually and in any combination for the realization of the invention in its various embodiments of importance his.
Claims (26)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003220454 DE20320454U1 (en) | 2003-12-22 | 2003-12-22 | Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge |
DE102004027986A DE102004027986A1 (en) | 2003-12-22 | 2004-06-09 | Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge |
PCT/DE2004/002748 WO2005060878A1 (en) | 2003-12-22 | 2004-12-15 | Parts assembly and part for a prosthesis |
EP04802947A EP1699387B1 (en) | 2003-12-22 | 2004-12-15 | Parts assembly and part for a prosthesis |
CA2548780A CA2548780C (en) | 2003-12-22 | 2004-12-15 | Parts assembly and part for a prosthesis |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10361166A DE10361166A1 (en) | 2003-12-22 | 2003-12-22 | Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge |
DE2003220454 DE20320454U1 (en) | 2003-12-22 | 2003-12-22 | Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge |
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DE20320454U1 true DE20320454U1 (en) | 2004-10-14 |
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ID=33311769
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DE2003220454 Expired - Lifetime DE20320454U1 (en) | 2003-12-22 | 2003-12-22 | Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge |
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DE (1) | DE20320454U1 (en) |
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