DE102004008137A1 - Femur or humerus component for a hip or shoulder joint endoprosthesis has a damper, especially of polyetheretherketone or polyethylene, between the cone and an internal wall of the joint system - Google Patents

Femur or humerus component for a hip or shoulder joint endoprosthesis has a damper, especially of polyetheretherketone or polyethylene, between the cone and an internal wall of the joint system Download PDF

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Publication number
DE102004008137A1
DE102004008137A1 DE200410008137 DE102004008137A DE102004008137A1 DE 102004008137 A1 DE102004008137 A1 DE 102004008137A1 DE 200410008137 DE200410008137 DE 200410008137 DE 102004008137 A DE102004008137 A DE 102004008137A DE 102004008137 A1 DE102004008137 A1 DE 102004008137A1
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Germany
Prior art keywords
hip
component according
cone
condyle
femoral component
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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DE200410008137
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German (de)
Inventor
Anton Cotting
Dirk Salomon
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Synthes Bettlach GmbH
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Mathys AG Bettlach
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Priority to DE200410008137 priority Critical patent/DE102004008137A1/en
Priority to EP05706983A priority patent/EP1722720A1/en
Priority to PCT/EP2005/000658 priority patent/WO2005089677A1/en
Publication of DE102004008137A1 publication Critical patent/DE102004008137A1/en
Ceased legal-status Critical Current

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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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • 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
    • A61F2/40—Joints for shoulders
    • A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30205—Three-dimensional shapes conical
    • A61F2002/30217—Three-dimensional shapes conical hollow cones, e.g. tubular-like cones
    • 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
    • A61F2002/30331—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
    • 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
    • A61F2002/30331—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
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • 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
    • A61F2002/30474—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using an intermediate sleeve interposed between both prosthetic parts to be coupled
    • 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
    • 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
    • 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
    • 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
    • A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/3069—Revision endoprostheses
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/365—Connections of heads to necks
    • 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
    • A61F2/40—Joints for shoulders
    • A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
    • A61F2002/4037—Connections of heads to necks
    • 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
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    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0067—Three-dimensional shapes conical
    • 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
    • A61F2310/00179—Ceramics or ceramic-like structures

Abstract

A femur or humerus component (1) for a hip or shoulder joint endoprosthesis with an anchorable shaft (2) in a medullary hollow in a femur or humerus bone and, formed on this, a neck part (3) with a hip or shoulder cone (4) to take up joint system (5) is such that a damping element (6) lies between the cone (4) and an internal wall (10) of the joint system (5).

Description

Die Erfindung betrifft eine Femur- oder Humeruskomponente für eine Hüft- oder Schultergelenksprothese zur prothetischen Versorgung des menschlichen oder tierischen Hüft- oder Schultergelenks.The The invention relates to a femoral or humeral component for a hip or Shoulder joint prosthesis for the prosthetic restoration of the human or animal hip or shoulder joint.

Beispielsweise ist aus der DE 101 56 610 A1 eine Gelenkkugel für eine Hüftgelenks-Endoprothese bekannt. Diese weist einen innenliegenden metallischen Armierungskörper auf, auf welchem eine Beschichtung als Gleitpartner für ihr Gegenstück im Gelenk ausgebildet ist. In dem metallischen Armierungskörper ist eine konische Klemmhülse zur Aufnahme eines Hüftschaftkonus angeordnet.For example, is from the DE 101 56 610 A1 a joint ball for a hip joint endoprosthesis known. This has an inner metallic Armierungskörper on which a coating is designed as a sliding partner for its counterpart in the joint. In the metallic Armierungskörper a conical clamping sleeve for receiving a hip stem cone is arranged.

Nachteilig an der aus der DE 101 56 610 A1 bekannten Gelenkkugel ist insbesondere, daß die Klemmhülse lediglich der Fixierung des Hüftschaftkonus dient und Abweichungen des Hüftschaftkonus von der optimalen Form durch Beschädigungen oder Verunreinigungen der Oberfläche nicht ausgeglichen werden können.A disadvantage of the DE 101 56 610 A1 known joint ball is in particular that the clamping sleeve serves only the fixation of the hip stem cone and deviations of the hip stem cone of the optimal shape can not be compensated by damage or contamination of the surface.

Weiterhin ist aus der DE 37 31 421 A1 eine Femur-Hüftgelenks-Endoprothese bekannt, welche mit einem vom Gelenkkopf konisch auslaufenden Schaft versehen ist, welcher durch eine Verdrehfixierung im Markraum des Femurknochens nur eine bestimmte Lage einnehmen kann. Dabei sind der Gelenkkopf und der Schaft voneinander getrennt, wobei der Schaft mit einem oberen Konus selbsthemmend in eine Konusausnehmung des Gelenkkopfes eingreift und dieser Eingriff zusätzlich formschlüssig erfolgt.Furthermore, from the DE 37 31 421 A1 a femoral hip joint endoprosthesis is known, which is provided with a tapered end of the condyle shaft, which can take only a certain position by a Verdrehfixierung in the medullary cavity of the femur bone. In this case, the condyle and the shaft are separated from each other, wherein the shaft engages with an upper cone self-locking in a conical recess of the condyle and this engagement also takes place in a form-fitting manner.

Nachteilig an der aus der DE 37 31 421 A1 bekannten Verdrehfixierung ist dabei, daß diese nicht zwischen Gelenkkugel und Hüftschaftkonus erfolgt, sondern zwischen Gelenkkugel und Schaft. Die Gelenkkugel ist somit immer noch auf dem Hüftschaftkonus verdrehbar, auch wenn sich der Schaft nicht mehr gegenüber dem Hüftschaftkonus verdrehen kann.A disadvantage of the DE 37 31 421 A1 Known Verdrehfixierung is that this is not done between the ball joint and hip stem cone, but between the ball joint and shaft. The joint ball is thus still rotatable on the hip stem cone, even if the shaft can no longer rotate relative to the hip stem cone.

Der Erfindung liegt demnach die Aufgabe zugrunde, eine Hüft- oder Schultergelenks-Endoprothese zu schaffen, die die Möglichkeit zum Ausgleich von Beschädigungen und Verunreinigungen des Hüft- oder Schulterschaftkonus bietet.Of the The invention is therefore based on the object, a hip or shoulder joint endoprosthesis to create the opportunity to compensate for damage and impurities of the hip or shoulder cone cone offers.

Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.The The object is solved by the features of claim 1.

Gemäß Anspruch 1 ist vorgesehen, ein Dämpfungselement zwischen einer Innenwandung der Gelenkkugel und dem Hüft- oder Schulterschaftkonus anzuordnen, welches so ausgeformt ist, daß es einerseits eine sichere Fixierung mit Schutz vor Verdrehen und andererseits den Ausgleich von Verformungen des Hüft- oder Schulterschaftkonus und die Dämpfung von Stößen ermöglicht.According to claim 1 is provided, a damping element between an inner wall of the joint ball and the hip or shoulder cone to arrange, which is formed so that it on the one hand a safe Fixation with protection against twisting and on the other hand the compensation of deformations of the hip or shoulder cone and the damping of shocks allows.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further advantageous embodiments of the invention are characterized in the subclaims.

Von Vorteil ist, daß das Dämpfungselement ein- oder mehrteilig ausgeführt sein kann.From Advantage is that the Damping element or executed in several parts can be.

Vorteilhafterweise ist das Dämpfungselement zweiteilig ausgebildet und weist eine Hülse, welche auf den Hüft- oder Schulterschaftkonus aufgesteckt ist, und eine Dämpfungsscheibe, welche den Hüft- oder Schulterschaftkonus stirnseitig abschließt, auf.advantageously, is the damping element formed in two parts and has a sleeve which on the hip or Shoulder socket cone is attached, and a damping disc, which the Hip or hip Shoulder shaft cone terminates on the front side, on.

Weiterhin ist von Vorteil, daß das Dämpfungselement aus einem Polymer wie beispielsweise Polyetheretherketon oder Polyethylen oder einem beliebigen biokompatiblen Verbundwerkstoff herstellbar ist, welcher eine pseudoelastische Verbindung zwischen den Prothesenkomponenten ermöglicht.Farther is an advantage that the damping element from a polymer such as polyetheretherketone or polyethylene or any biocompatible composite material which is a pseudoelastic connection between the prosthesis components allows.

Vorteilhafterweise weist die Hülse eine oder mehrere Vertiefungen auf, welche mit einer entsprechenden Anzahl von Vorsprüngen an der Innenwandung der Gelenkkugel in Formschluß steht und dadurch eine Sicherung gegen Herausspringen und Verdrehen ermöglicht.advantageously, has the sleeve one or more depressions, which with a corresponding Number of protrusions on the inner wall of the ball joint is in positive engagement and thereby a fuse against jumping out and twisting allows.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand teilweise schematischer Darstellungen in der Zeichnung näher erläutert. In der Zeichnung zeigen:One embodiment The invention will be described below with reference to partially schematic representations closer in the drawing explained. In the drawing show:

1 eine schematische Ansicht eines Ausführungsbeispiels einer erfindungsgemäß ausgestalteten Femurkomponente einer Hüftgelenks-Endoprothese und 1 a schematic view of an embodiment of an inventively designed femoral component of a hip joint endoprosthesis and

2 eine vergrößerte Ansicht des in 1 mit II bezeichneten Ausschnitts aus der erfindungsgemäß ausgestalteten Femurkomponente. 2 an enlarged view of the in 1 With II designated section of the inventively designed femoral component.

1 zeigt in einer schematischen Darstellung eine Ansicht einer Femurkomponente 1 für eine Hüftgelenks-Endoprothese. Die im Ausführungsbeispiel dargestellte Hüftgelenks-Endoprothese wird auch als totale Hüftgelenks-Endoprothese bezeichnet, da sowohl der femurale als auch der beckenseitige Gelenkanteil ersetzt wird. Die Femurkomponente 1 weist einen Schaft 2 auf, welcher in der Markhöhle eines Femurknochens je nach Bauform der Femurkomponente 1 einzementiert oder zementfrei verankert wird. An dem Schaft 2 ist eine Halspartie 3 ausgebildet, an deren Ende ein Hüftschaftkonus 4 zur Aufnahme eines Gelenkkopfes 5 ausgebildet ist. 1 shows a schematic representation of a view of a femoral component 1 for a hip joint endoprosthesis. The hip joint endoprosthesis shown in the exemplary embodiment is also referred to as a total hip joint endoprosthesis, since both the femoral and the pelvic joint parts are replaced. The femoral component 1 has a shaft 2 which, in the medullary cavity of a femur, depending on the design of the femoral component 1 cemented or cement-free kert becomes. On the shaft 2 is a neck part 3 formed at the end of a hip stem cone 4 for receiving a condyle 5 is trained.

Die im folgenden näher beschriebenen erfindungsgemäßen Maßnahmen sind unabhängig von der Form des Schaftes 2 sowie in der Kombination mit einer nicht weiter dargestellten Gelenkpfanne oder mit einem direkt in der Gelenkpfanne artikulierenden Prothesenkopfsystem zu sehen. Die Form der Gelenkpfanne ist beliebig. Auch die Form der Halspartie 3 ist frei wählbar.The measures according to the invention described in more detail below are independent of the shape of the shank 2 as well as in combination with a joint socket (not shown) or with a prosthesis head system articulating directly in the socket. The shape of the socket is arbitrary. Also the shape of the neck 3 is freely selectable.

Die Verwendung von Gelenkkopfsystemen 5 aus Keramik hat sich dank der guten tribologischen Eigenschaften in der Hüftendoprothetik durchgesetzt. Sie birgt jedoch das Risiko von Brüchen des Gelenkkopfsystems 5 bei hoher dynamischer Beanspruchung der Hüfte, insbesondere bei Stößen. Falls der Hüftschaftkonus 4 vor dem Aufsetzten eines Gelenkkopfsystems 5 aus Keramik nicht frei von Partikeln (Knochenreste, Blut, Fett, Weichteilen etc.) ist oder die Oberfläche des Hüftschaftkonus 4 nicht oder nicht mehr den Vorgaben entspricht, können im Gelenkkopfsystem 5 unerwünschte Zugspannungen auftreten und lokal zu Spannungsspitzen führen, die zum Bruch des Gelenkkopfes 5 führen können.The use of condyle systems 5 made of ceramic has gained acceptance thanks to its good tribological properties in hip arthroplasty. However, it carries the risk of fractures of the condyle system 5 At high dynamic stress of the hip, especially in shock. If the hip stem cone 4 before putting on a condyle system 5 made of ceramic is not free of particles (bones, blood, fat, soft tissue etc.) or the surface of the hip stem cone 4 not or no longer meets the specifications, can in the condyle 5 undesirable tensile stresses occur and lead locally to voltage spikes leading to breakage of the condyle 5 being able to lead.

Bei der Revision des entsprechenden Gelenkkopfsystems 5, bei welcher der Schaft 2 oftmals in situ verbleiben kann, kann die Wahl meist nicht wieder auf ein Gelenkkopfsystem 5 aus Keramik fallen, da der Hüftschaftkonus 4 durch das Entfernen des Gelenkkopfsystems 5 beschädigt wurde und eine von der Ursprungsgeometie abweichende Konusgeometrie aufweist, was zu oben genannten Problemen analog zu den Verunreinigungen führen kann.At the revision of the corresponding condyle system 5 in which the shaft 2 can often remain in situ, the choice is usually not back to a condyle system 5 made of ceramic, as the hip stem cone 4 by removing the condyle system 5 was damaged and has a different from the original geometry cone geometry, which can lead to the above problems analogous to the impurities.

Erfindungsgemäß ist daher vorgesehen, wie in 2, die den in 1 mit II bezeichneten Ausschnitt vergrößert dargestellt, in dem keramischen Gelenkkopfsystem 5 ein Dämpfungselement 6 einzusetzen, das die Fehlertoleranz vergrößert und das Risiko eines Bruchs des Gelenkkopfsystems 5 reduziert. Ferner kann das Dämpfungselement der Verdrehfixierung dienen. Das Dämpfungselement 6 ist bevorzugt zweiteilig ausgebildet. Ein erstes Element ist in Form einer konischen Hülse 7 ausgebildet, die auf den Hüftschaftkonus 4 aufgesteckt und formschlüssig an diesem fixiert ist. Die Hülse 7 liegt an einer Innenwandung 8 des keramischen Gelenkkopfsystems 5 an.According to the invention is therefore provided as in 2 that the in 1 Enlarged by II section shown enlarged in the ceramic joint head system 5 a damping element 6 which increases fault tolerance and the risk of fracture of the condyle system 5 reduced. Furthermore, the damping element can serve the Verdrehfixierung. The damping element 6 is preferably formed in two parts. A first element is in the form of a conical sleeve 7 formed on the hip stem cone 4 attached and positively fixed to this. The sleeve 7 lies on an inner wall 8th of the ceramic condyle system 5 at.

Die konische Hülse 7 dient dabei einerseits zur Dämpfung, andererseits kann sie durch eine entsprechende Formgebung auch als Verdrehsicherung und Schnappfixierung für die Verbindung zwischen dem Gelenkkopfsystem 5 und dem Hüftschaftkonus 4 dienen. Die Hülse 7 weist zu diesem Zweck eine oder mehrere Vertiefungen 11 auf, welche mit einer entsprechenden Anzahl von an der Innenwandung 8 des Gelenkkopfsystems 5 ausgebildeten Vorsprüngen 12 in Formschluß stehen und dadurch sowohl das Verdrehen des Hüftschaftkonus 4 gegenüber des Gelenkkopfsystems 5 als auch das Herausrutschen des Hüftschaftkonus 4 aus dem Gelenkkopfsystem 5 verhindern. Im Querschnitt kann die Hülse 7 dadurch eine mehr oder weniger wellige Außenkontur aufweisen.The conical sleeve 7 serves on the one hand for damping, on the other hand, it can by appropriate shaping as anti-rotation and snap fixation for the connection between the condyle 5 and the hip stem cone 4 serve. The sleeve 7 has one or more wells for this purpose 11 on, which with a corresponding number of on the inner wall 8th of the condyle system 5 trained protrusions 12 in positive engagement and thereby both the rotation of the hip stem cone 4 opposite the condyle system 5 as well as the slipping out of the hip stem cone 4 from the condyle system 5 prevent. In cross section, the sleeve 7 thereby have a more or less wavy outer contour.

Die Verdrehsicherung kann auch durch die umgekehrte Ausbildung der Vorsprünge 12 und Vertiefungen 11 erzielt werden, indem die Vorsprünge 12 an der Hülse 7 und die Vertiefungen 11 an der Innenwandung 8 des Gelenkkopfsystems 5 ausgebildet sind.The rotation can also by the reverse formation of the projections 12 and depressions 11 be achieved by the projections 12 on the sleeve 7 and the depressions 11 on the inner wall 8th of the condyle system 5 are formed.

Proximal einer Stirnfläche 13 des Hüftschaftkonus 4 ist zudem bevorzugt ein weiteres Element in Form einer Dämpfungsscheibe 9 in einer Ausnehmung 10 des Gelenkkopfes 5 vorgesehen, um Sicherheit gegen mögliches Fließen des Dämpfungswerkstoffes der Hülse 7 zu bieten und dadurch eine Migration des Hüftschaftkonus 4 nach kranial, d. h. in das Gelenkkopfsystem 5 hinein, zu verhindern. Bei eventueller Migration des Hüftschaftkonus 4 in das Gelenkkopfsystem 5 hinein kommt die Stirnfläche 13 des Hüftschaftkonus 4 an der Dämpfungsscheibe 9 zu liegen, wodurch eine weitere Migration verhindert wird. Die Dämpfungsscheibe 9 füllt dabei die Ausnehmung 10 nicht vollständig aus, sondern ist nur lose eingelegt, um eine möglichst große Toleranz gegenüber Bewegungen des Hüftschaftkonus 4 zu gewährleisten.Proximal of a face 13 of the hip stem cone 4 is also preferred a further element in the form of a damping disk 9 in a recess 10 of the condyle 5 provided to ensure safety against possible flow of the damping material of the sleeve 7 to offer and thereby a migration of the hip stem cone 4 cranially, ie in the condyle 5 into it, to prevent. In case of migration of the hip stem cone 4 in the condyle system 5 into it comes the face 13 of the hip stem cone 4 on the damping disk 9 lying, preventing further migration. The damping disk 9 fills the recess 10 not completely off, but is only loosely inserted to the greatest possible tolerance to movements of the hip stem cone 4 to ensure.

Die Hülse 7 und die Dämpfungsscheibe 9 bestehen dabei vorzugsweise aus einem biokompatiblen Material mit niedrigerer Steifigkeit und höherer Bruchzähigkeit als die Keramik des Gelenkkopfsystems 5, insbesondere aus einem Polymer wie Polyetheretherketon (PEEK) oder Polyethylen (PE) oder einem beliebigen biokompatiblem Verbundwerkstoff, der eine pseudoelastische Verbindung zwischen den Prothesenkomponenten ermöglich.The sleeve 7 and the damping disk 9 preferably consist of a biocompatible material with lower stiffness and higher fracture toughness than the ceramic of the condyle system 5 , in particular of a polymer such as polyetheretherketone (PEEK) or polyethylene (PE) or any biocompatible composite material which allows a pseudoelastic connection between the prosthesis components.

Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt und auch für andere Formen von Femurkomponenten 1 anwendbar.The invention is not limited to the illustrated embodiment and also to other forms of femoral components 1 applicable.

Insbesondere sind bei entsprechender Gestaltung des Dämpfungselements 6 die vorstehend beschriebenen erfindungsgemäßen Maßnahmen auch auf eine Schultergelenksendoprothese anwendbar.In particular, with a corresponding design of the damping element 6 the above-described inventive measures also applicable to a shoulder joint endoprosthesis.

Claims (12)

Femur- oder Humeruskomponente (1) für eine Hüft- oder Schultergelenks-Endoprothese, mit einem in einer Markhöhle eines Femur- oder Humerusknochens verankerbaren Schaft (2) und einer daran ausgebildeten Halspartie (3) mit einem Hüft- oder Schulterschaftkonus (4) zur Aufnahme eines Gelenkkopfsystems (5), dadurch gekennzeichnet, daß zwischen dem Hüft- oder Schulterschaftkonus (4) und einer Innenwandung (10) des Gelenkkopfsystems (5) ein Dämpfungselement (6) angeordnet ist.Femoral or humeral component ( 1 ) for a hip or shoulder joint endoprosthesis, with a shaft anchored in a medullary cavity of a femoral or humeral bone ( 2 ) and a neck area formed thereon ( 3 ) with a hip or shoulder taper ( 4 ) for receiving a condyle system ( 5 ), characterized in that between the hip or shoulder shaft cone ( 4 ) and an inner wall ( 10 ) of the condyle system ( 5 ) a damping element ( 6 ) is arranged. Femurkomponente nach Anspruch 1, dadurch gekennzeichnet, daß das Dämpfungselement (6) ein- oder mehrteilig, insbesondere zweiteilig, ausgebildet ist.Femoral component according to claim 1, characterized in that the damping element ( 6 ) one or more parts, in particular two parts, is formed. Femurkomponente nach Anspruch 2, dadurch gekennzeichnet, daß ein erstes Element in Form einer konischen Hülse (7) ausgebildet ist.Femoral component according to claim 2, characterized in that a first element in the form of a conical sleeve ( 7 ) is trained. Femurkomponente nach Anspruch 3, dadurch gekennzeichnet, daß die konische Hülse (7) auf dem Hüft- oder Schulterschaftkonus (4) aufgesteckt und formschlüssig an diesem fixiert ist.Femoral component according to claim 3, characterized in that the conical sleeve ( 7 ) on the hip or shoulder shaft cone ( 4 ) is attached and positively fixed to this. Femurkomponente nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Hülse (7) zumindest eine Vertiefung (11) aufweist.Femoral component according to claim 3 or 4, characterized in that the sleeve ( 7 ) at least one depression ( 11 ) having. Femurkomponente nach Anspruch 5, dadurch gekennzeichnet, daß die zumindest eine Vertiefung (11) der Hülse (7) in Formschluß mit zumindest einem an der Innenwandung (8) des Gelenkkopfes (5) ausgebildeten Vorsprung (12) steht.Femoral component according to claim 5, characterized in that the at least one depression ( 11 ) of the sleeve ( 7 ) in positive engagement with at least one on the inner wall ( 8th ) of the condyle ( 5 ) trained advantage ( 12 ) stands. Femurkomponente nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß ein zweites Element in Form einer Dämpfungsscheibe (9) ausgebildet ist.Femur component according to one of claims 2 to 6, characterized in that a second element in the form of a damping disc ( 9 ) is trained. Femurkomponente nach Anspruch 7, dadurch gekennzeichnet, daß die Dämpfungsscheibe (9) in einer Ausnehmung (10) des Gelenkkopfes (5) angeordnet ist.Femoral component according to claim 7, characterized in that the damping disc ( 9 ) in a recess ( 10 ) of the condyle ( 5 ) is arranged. Femurkomponente nach Anspruch 8, dadurch gekennzeichnet, daß die Dämpfungsscheibe (9) locker in die Ausnehmung (10) eingelegt ist.Femoral component according to claim 8, characterized in that the damping disc ( 9 ) loosely in the recess ( 10 ) is inserted. Femurkomponente nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß die Dämpfungsscheibe (9) proximal gegenüber einer Stirnfläche (13) des Hüft- oder Schulterschaftkonus (4) angeordnet ist.Femoral component according to one of claims 7 to 9, characterized in that the damping disc ( 9 ) proximal to an end face ( 13 ) of the hip or shoulder shaft cone ( 4 ) is arranged. Femurkomponente nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß das Dämpfungselement (6) aus einem Polymer oder einem pseudoelastischen biokompatiblen Verbundwerkstoff besteht.Femur component according to one of claims 1 to 10, characterized in that the damping element ( 6 ) consists of a polymer or a pseudoelastic biocompatible composite material. Femurkomponente nach Anspruch 11, dadurch gekennzeichnet, daß das Polymer insbesondere Polyetheretherketon oder Polyethylen ist.Femoral component according to claim 11, characterized in that that this Polymer is in particular polyetheretherketone or polyethylene.
DE200410008137 2004-02-19 2004-02-19 Femur or humerus component for a hip or shoulder joint endoprosthesis has a damper, especially of polyetheretherketone or polyethylene, between the cone and an internal wall of the joint system Ceased DE102004008137A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE200410008137 DE102004008137A1 (en) 2004-02-19 2004-02-19 Femur or humerus component for a hip or shoulder joint endoprosthesis has a damper, especially of polyetheretherketone or polyethylene, between the cone and an internal wall of the joint system
EP05706983A EP1722720A1 (en) 2004-02-19 2005-01-24 Femoral or humeral component of a ball-and-socket joint endoprosthesis with a damping element
PCT/EP2005/000658 WO2005089677A1 (en) 2004-02-19 2005-01-24 Femoral or humeral component of a ball-and-socket joint endoprosthesis with a damping element

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DE200410008137 DE102004008137A1 (en) 2004-02-19 2004-02-19 Femur or humerus component for a hip or shoulder joint endoprosthesis has a damper, especially of polyetheretherketone or polyethylene, between the cone and an internal wall of the joint system

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DE200410008137 Ceased DE102004008137A1 (en) 2004-02-19 2004-02-19 Femur or humerus component for a hip or shoulder joint endoprosthesis has a damper, especially of polyetheretherketone or polyethylene, between the cone and an internal wall of the joint system

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JP2020523124A (en) * 2017-06-14 2020-08-06 エボニック オペレーションズ ゲーエムベーハー Polymer sleeves and their fabrication and processing to prevent stem wear and improve taper lock in modular and non-modular orthopedic implants

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DE9209584U1 (en) * 1992-07-17 1992-11-19 Didzun, Walter, 2372 Brekendorf, De
DE29513694U1 (en) * 1995-08-25 1997-01-02 Link Waldemar Gmbh Co Joint socket for an endoprosthesis
US5735905A (en) * 1995-04-27 1998-04-07 Southwest Research Institute Shock absorbing element for a load bearing prosthesis
DE19904437A1 (en) * 1999-02-04 2000-08-10 Ceramtec Ag Clamp-fit connection between prosthetic components of joint prostheses

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Publication number Priority date Publication date Assignee Title
DE8812289U1 (en) * 1988-09-28 1990-01-25 Copf, Franz, Dr.Med., 7000 Stuttgart, De
GB0122295D0 (en) * 2001-09-14 2001-11-07 Benoist Girard Sas Resilient thimble for ball head of prosthetic joint

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
DE9209584U1 (en) * 1992-07-17 1992-11-19 Didzun, Walter, 2372 Brekendorf, De
US5735905A (en) * 1995-04-27 1998-04-07 Southwest Research Institute Shock absorbing element for a load bearing prosthesis
DE29513694U1 (en) * 1995-08-25 1997-01-02 Link Waldemar Gmbh Co Joint socket for an endoprosthesis
DE19904437A1 (en) * 1999-02-04 2000-08-10 Ceramtec Ag Clamp-fit connection between prosthetic components of joint prostheses

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