DE1541246B1 - Hip joint prosthesis - Google Patents

Hip joint prosthesis

Info

Publication number
DE1541246B1
DE1541246B1 DE19661541246 DE1541246A DE1541246B1 DE 1541246 B1 DE1541246 B1 DE 1541246B1 DE 19661541246 DE19661541246 DE 19661541246 DE 1541246 A DE1541246 A DE 1541246A DE 1541246 B1 DE1541246 B1 DE 1541246B1
Authority
DE
Germany
Prior art keywords
capitulum
spindle part
hip joint
joint prosthesis
pin
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.)
Pending
Application number
DE19661541246
Other languages
German (de)
Inventor
Tor Christiansen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of DE1541246B1 publication Critical patent/DE1541246B1/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral 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
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of 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
    • A61F2002/30316—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
    • A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
    • 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
    • A61F2002/30589—Sealing means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30785—Plurality of holes parallel
    • 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
    • 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
    • A61F2002/3241—Joints for the hip having a ring, e.g. for locking the femoral head into the acetabular cup
    • 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
    • A61F2002/3625—Necks
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2002/3678—Geometrical features
    • A61F2002/368—Geometrical features with lateral apertures, bores, holes or openings, e.g. for reducing the mass, for receiving fixation screws or for communicating with the inside of a hollow shaft
    • 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

Description

1 21 2

Die Erfindung betrifft eine Hüftgelenk-Prothese aus günstigere Beweglichkeit als die bekannten mit einem im Acetabulum anliegenden Capitulum Prothesen.The invention relates to a hip joint prosthesis with more favorable mobility than the known ones with a capitulum prosthesis lying in the acetabulum.

und einem in die Medularhöhle des Femurschaftes An einem bevorzugten Ausführungsbeispiel solland one in the medular cavity of the femoral shaft. In a preferred embodiment

einführbaren Spindelteil, das mittels eines Zapfens, die Erfindung nun näher erläutert werden. Es sei dessen Achse mit der Hauptlängsachse des Spindel- 5 jedoch darauf hingewiesen, daß verschiedene Ändeteils einen Winkel von mindestens 45° bildet, mit rangen dieses Ausführungsbeispieles möglich sind, dem Capitulum zusammensetzbar ist. Insbesondere kann die Gliederung bzw. Lagerunginsertable spindle part, which by means of a pin, the invention will now be explained in more detail. Be it whose axis with the main longitudinal axis of the spindle 5, however, indicated that different changing part forms an angle of at least 45 °, are possible with wrestling of this embodiment, the capitulum can be assembled. In particular, the structure or storage

Hüftgelenk-Prothesen wurden bisher als einheit- zwischen dem Capitulum und der Spindelpartie in an liehe, aus einem korrosionsbeständigen Werkstoff ge- sich bekannter Weise abgeändert werden, ohne von formte Metallkörper hergestellt. Das kugelförmige io der Grundidee der Erfindung abzuweichen.
Capitulum der bekannten Prothesen weist eine po- In der Zeichnung ist 1 die Spindelpartie derHip joint prostheses have hitherto been made as a unit between the capitulum and the spindle part in a known manner, made of a corrosion-resistant material, without being made of molded metal bodies. The spherical io deviate from the basic idea of the invention.
The capitulum of the known prostheses has a po- In the drawing, 1 is the spindle part of the

lierte Oberfläche auf, die im Acetabulum gleiten Prothese gemäß der Erfindung, welche in die soll. Medularhöhle des Femurschaftes eingeführt wird,lated surface that slide in the acetabulum prosthesis according to the invention, which in the target. The medular cavity of the femoral shaft is inserted,

Es ist auch schon bekannt, eine Prothese aus ge- wenn die obere Gelenkkugel entfernt und der obere trennten Teilen herzustellen, nämlich einem metal- 15 Rand des Femurschaftes zweckmäßig geformt ist, um lischen Capitulum, einem aus Kunstharz bestehen- eine günstige Unterstützung für einen Auflagerand 4 den Zwischenstück und einem metallischen Mark- am oberen Ende der Spindelpartie zu bilden. Die nagel, die bei der Operation starr zusammengesetzt Spindelpartie ist aus einem korrosionsfreien Metall werden (deutsche Auslegeschrift 1024 203). Dem gebildet und kann zwecks Gewichtsverringerung Capitulum ist ein Zapfen angeformt, der durch den 20 Löcher 2 und zur besseren Lokalisierung in der Marknagel hindurchgesteckt wird und mit diesem Medularhöhle eine Führungsrippe 3 aufweisen,
einen Winkel von etwas mehr als 45° bildet. Einstückig mit dem oberen Ende der SpindelpartieIt is also already known to manufacture a prosthesis from if the upper joint ball is removed and the upper part separated, namely a metal edge of the femoral shaft is appropriately shaped to form a capitulum made of synthetic resin, a favorable support for a bearing edge 4 to form the intermediate piece and a metallic marrow at the upper end of the spindle section. The nail, which is rigidly assembled during the operation, is made of a corrosion-free metal (German Auslegeschrift 1024 203). A pin is formed on the capitulum and can be formed for the purpose of weight reduction, which is inserted through the holes 2 and for better localization in the intramedullary nail and with this medular cavity has a guide rib 3,
forms an angle of slightly more than 45 °. One piece with the upper end of the spindle section

Die bekannten Prothesen weisen mehrere Nach- ist in dem gezeigten Beispiel ein zylindrischer Lagerteile auf. Insbesondere neigt das Capitulum nach zapfen 5 ausgebildet. Dieser Lagerzapfen 5 wirkt mit einiger Zeit, z. B. nach wenigen Jahren, dazu, das 25 einer zylindrischen Ausnehmung 6' in dem im Acetabulum derart zu verschleißen, daß es das Capi- wesentlichen sphärischen Capitulum 6 zusammen, tulum durchdringt. Von diesem Augenblick an ist Das Capitulum 6 kann vorteilhafterweise aus Tetradem Patienten nicht mehr zu helfen. Er ist für sein fluorpolyäthylen oder einem anderen Kunststoff herrestliches Leben auf den Rollstuhl oder das Bett an- gestellt sein, der gegenüber den Körpersäften korrogewiesen. 3° sionsfrei und in seiner Anlage an dem Lagerzapfen 5The known prostheses have several disadvantages - in the example shown, a cylindrical bearing part. In particular, the capitulum tends towards pin 5. This journal 5 acts with some time, for. B. after a few years to wear the 25 of a cylindrical recess 6 ' in the acetabulum in such a way that it penetrates the essentially spherical capitulum 6 together, tulum. From this moment on the capitulum 6 can advantageously no longer help patients from Tetradem. He is employed on the wheelchair or bed for his fluoropolyethylene or some other plastic glorious life, which is corrosive to body fluids. 3 ° sion-free and in its contact with the bearing pin 5

Weiterhin sind die bekannten Prothesen sehr selbstschmierend ist.Furthermore, the known prostheses are very self-lubricating.

schwer, weil sie massiv ausgebildet sind. Auch be- Damit keine Körpersäfte zwischen die zusammendingt das chirurgische Einsetzen der Prothese einen wirkenden Lagerflächen 5, 6' dringen können, kann verhältnismäßig großen Einschnitt, damit sie zwischen die Vorrichtung beispielsweise am inneren Ende des dem oberen Ende des Femurschaftes und dem Ace- 35 Lagerzapfens einen O-Ring 8 aufweisen,
tabulum angebracht werden kann. Außerdem verur- Die bekannten Hüftgelenk-Prothesen haben eindifficult because they are massive. A relatively large incision can also be made so that no body fluids can penetrate between the operative bearing surfaces 5, 6 ', for example at the inner end of the upper end of the femoral shaft and the Ace bearing pin have an O-ring 8,
tabulum can be attached. In addition, the well-known hip joint prostheses have a

Sachen die bekannten Prothesen große Schmerzen, Capitulum, welches einstückig mit der Spindelpartie und zwar sowohl während der Angewöhnungszeit, ausgebildet und für direkte, bewegliche Auflage in wenn das Bein nach dem Einsetzen der Prothese ge- dem Acetabulum berechnet ist. Das Capitulum dieser braucht wird, als auch später. 4° Art ist daher im wesentlichen in der VerlängerungThings the well-known prosthesis great pain, capitulum, which is integral with the spindle part both during the acclimatization period, trained and for direct, movable support in if the leg is calculated according to the acetabulum after the insertion of the prosthesis. The capitulum of this is needed, as well as later. 4 ° Art is therefore essentially in the process of being extended

Die Erfindung hat sich die Aufgabe gestellt, eine der Spindelpartie vorgesehen. Demgegenüber ist das Hüftgelenk-Prothese zu schaffen, bei welcher eine erfindungsgemäße Capitulum derart vorgesehen, daß Relativbewegung zwischen der Gelenkpfanne der seine Achse y zur Hauptlängsachse χ der Spindel-Hüfte und dem in ihr ruhenden Prothesenkopf ver- partie einen Winkel « bildet. Dieser Winkel ist zumieden wird. 45 mindest 45° und vorteilhaft etwa 65°, wenn es sich,The invention has set itself the task of providing one of the spindle section. In contrast, the hip joint prosthesis is to be created in which a capitulum according to the invention is provided in such a way that the relative movement between the joint socket of its axis y to the main longitudinal axis χ of the spindle hip and the prosthesis head resting in it forms an angle. This angle is being avoided. 45 at least 45 ° and advantageously around 65 ° if it is

Die Erfindung besteht darin, daß bei einer Hüft- wie in der Zeichnung gezeigt, um eine Zapfenlagegelenk-Prothese der eingangs genannten Art der rung handelt. Durch diesen Winkel α neigt die BeZapfen ein einstückig am Spindelteil angebrachter wegung des Beins nicht dazu, das kugelförmige Lagerzapfen ist, der frei drehbar in eine im Capitulum Capitulum 6 zu bewegen, und es gewinnt dadurch vorgesehene Bohrung mit einer vorzugsweise aus 5° eine mehr oder weniger permanente Anlage an das selbstschmierendem Kunststoff gebildeten Lagerfläche Acetabulum. Die Bewegung wird somit von der paßt, das Spindelteil also relativ zum Capitulum um Zapfenverbindung 5, 6' aufgenommen, und das Acedie Achse des Lagerzapfens frei drehbar ist. tabulum wird keinem verschleissenden Einfluß aus-The invention consists in that in a hip as shown in the drawing, around a pin position joint prosthesis of the type mentioned at the beginning. The BeZapfen inclines through this angle α a movement of the leg that is integrally attached to the spindle part does not contribute to the spherical one Bearing pin is freely rotatable to move in a capitulum capitulum 6, and it wins thereby provided bore with a preferably from 5 ° a more or less permanent contact with the Self-lubricating plastic bearing surface formed by the acetabulum. The movement is thus controlled by the fits, the spindle part so added relative to the capitulum around tenon connection 5, 6 ', and the acedie Axis of the journal is freely rotatable. tabulum is not excluded from any wear-out

Vorteilhaft besteht das Capitulum aus einem gesetzt, was die obenerwähnte Gefahr eines Durchkorrosionsfreien Kunststoff, z. B. Tetrafluorpoly- 55 bruches eliminiert.Advantageously, the capitulum consists of a set, which eliminates the risk of corrosion as mentioned above Plastic, e.g. B. Tetrafluoropoly 55 fraction eliminated.

äthylen, der bekanntlich selbstschmierend ist und Da das Capitulum 6 erfindungsgemäß vorteilhaftethylene, which is known to be self-lubricating and since the capitulum 6 is advantageous according to the invention

dem zusammenwirkenden, von der Spindelpartie ab- aus selbstschmierendem Plastikwerkstoff hergestellt stehenden Metallteil somit eine günstige Lagerung ist, kann auch das Gewicht der Prothese wesentlich bietet. verringert werden. Die bekannten Metallköpfe habenthe interacting, from the spindle part made of self-lubricating plastic material standing metal part is therefore a favorable storage, the weight of the prosthesis can also be significant offers. be reduced. The well-known metal heads have

Eine Prothese gemäß der Erfindung mit einer lös- 60 ein spezifisches Gewicht von etwa 8, während das baren, gelenkigen Verbindung zwischen dem Spindel- erfindungsgemäß vorgeschlagene Capitulum ein teil und dem Capitulum besitzt wesentliche Vorteile. spezifisches Gewicht von 2,1 bis 2,3 aufweist.
Sie kann mit kleinen operativen Einschnitten einge- Das Capitulum 6 und die Spindelpartie 1 sind alsA prosthesis according to the invention with a releasable specific weight of about 8, while the bar, articulated connection between the spindle part proposed according to the invention and the capitulum has significant advantages. has a specific gravity of 2.1 to 2.3.
It can be cut with small surgical incisions. The capitulum 6 and the spindle part 1 are as

setzt werden. Der Patient hat bedeutend weniger zwei getrennte, aber zusammenbaubare Teile herge-Schmerzen als bisher, und die Prothese kann mit 65 stellt. Somit kann der operative Einschnitt viel kleiner geringerem Gewicht als die bisher bekannten herge- gemacht werden, da die Spindelpartie zuerst eingestellt werden. Sie läßt sich leicht richtig einsetzen setzt und das Capitulum nachher montiert werden und erlaubt dem Bein nach der Operation eine weit- kann. Dieses Eintreiben der Spindelpartie kann fernerare set. The patient has significantly less pain caused by two separate but assemblable parts than before, and the prosthesis can be set at 65. Thus, the operative incision can be much smaller lighter than the previously known ones, since the spindle section is set first will. It can easily be inserted correctly and the capitulum can be assembled afterwards and allows the leg to move further after the operation. This driving in of the spindle section can also

dadurch erleichtert werden, daß der obere Teil der Spindelpartie eine Vertiefung 7 od. dgl. aufweist, welche sich für Zusammenwirkung mit einem zweckmäßigen Werkzeug zum Eintreiben eignet.are facilitated by the fact that the upper part of the spindle part has a recess 7 or the like, which is suitable for interaction with an appropriate tool for driving.

Die Erfindung beschränkt sich nicht auf das beschriebene Ausführungsbeispiel, sondern kann mehrfach abgeändert werden, ohne die Erfindungsidee zu verlassen. So läßt sich die beschriebene Zapfenlagerung durch eine andere zweckmäßige Lagerung, beispielsweise ein Kugelglied, gegebenenfalls mit be- ίο grenzten Auflageflächen zwecks gegenseitiger Bewegungsmöglichkeit der Teile ersetzen. Das Capitulum und die Spindelpartie miteinander verriegelnde Organe sind im allgemeinen nicht erforderlich, weil diese beiden Teile durch die Muskelspannung festgehalten werden. Sollte indes eine Lagerungsverbindung verwendet werden, die durch die Muskelspannung nicht sicher festgehalten wird, können auch Verriegelungsorgane in die Prothese eingehen.The invention is not restricted to the exemplary embodiment described, but can be used several times can be modified without departing from the inventive idea. So can the journal bearing described by another appropriate storage, for example a spherical link, possibly with loading Replace adjacent contact surfaces so that the parts can move freely. The capitulum and organs that interlock the spindle section are generally not required because these two parts are held in place by muscle tension. Should, however, be a storage connection that are not held securely by muscle tension can also be used Locking organs go into the prosthesis.

_ ,_,

Claims (4)

Patentansprüche:Patent claims: 1. Hüftgelenk-Prothese mit einem im Acetabulum anliegenden Cabitulum und einem in die Medularhöhle des Femurschaftes einführbaren Spindelteil, das mittels eines Zapfens, dessen Achse mit der Hauptlängsachse des Spindelteils einen Winkel von mindestens 45° bildet, mit dem Capitulum zusammensetzbar ist, dadurch gekennzeichnet, daß der Zapfen ein einstückig am Spindelteil (1) angebrachter Lagerzapfen (5) ist, der frei drehbar in eine im Capitulum (6) vorgesehene Bohrung mit einer vorzugsweise aus selbstschmierendem Kunststoff gebildeten Lagerfläche (6') paßt, das Spindelteil also relativ zum Capitulum um die Achse des Lagerzapfens frei drehbar ist.1. Hip joint prosthesis with one in the acetabulum adjacent cabitulum and one insertable into the medular cavity of the femoral shaft Spindle part, which by means of a pin, the axis of which with the main longitudinal axis of the spindle part forms an angle of at least 45 ° with which the capitulum can be assembled, characterized in that that the pin is an integral bearing pin (5) attached to the spindle part (1) is, which is freely rotatable in a bore provided in the capitulum (6) with a preferably from self-lubricating plastic formed bearing surface (6 ') fits, so the spindle part relative to the Capitulum is freely rotatable about the axis of the bearing pin. 2. Hüftgelenk-Prothese nach Anspruch 1, dadurch gekennzeichnet, daß die Hauptlängsachse (x) des Spindelteils (1) und die Achse (y) der Zapfenlagerung (5, 6') miteinander einen Winkel von etwa 65° bilden.2. Hip joint prosthesis according to claim 1, characterized in that the main longitudinal axis (x) of the spindle part (1) and the axis (y) of the journal bearing (5, 6 ') form an angle of about 65 ° with one another. 3. Hüftgelenk-Prothese nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie am oberen Ende des Spindelteils (1) eine Vertiefung (7) od. dgl. zum Ansetzen eines Werkzeugs, mittels dessen das Spindelteil in die Medularhöhle eingetrieben werden kann, aufweist.3. Hip joint prosthesis according to claim 1 or 2, characterized in that it is at the upper end of the spindle part (1) has a recess (7) or the like for attaching a tool, by means of which the spindle part can be driven into the medular cavity. 4. Hüftgelenk-Prothese nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in der Zapfenlagerung (5, 6') Dichtungsmittel, wie z. B. ein oder mehrere O-Ringe (8), vorgesehen sind.4. Hip joint prosthesis according to one of claims 1 to 3, characterized in that in the journal bearing (5, 6 ') sealing means, such as. B. one or more O-rings (8) are provided are. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DE19661541246 1965-05-26 1966-05-18 Hip joint prosthesis Pending DE1541246B1 (en)

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US (1) US3466670A (en)
AT (1) AT274223B (en)
BE (1) BE681618A (en)
CH (1) CH459462A (en)
DE (1) DE1541246B1 (en)
DK (1) DK109052C (en)
GB (1) GB1071450A (en)
NL (1) NL145755B (en)
SE (1) SE315686B (en)

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DE2627569A1 (en) * 1976-06-19 1977-12-22 Friedrichsfeld Gmbh Prosthesis for head of femur - has ridge at shoulder and groove reaching to lower end
DE2724041A1 (en) * 1977-05-23 1978-11-30 Sulzer Ag COMBINATION OF IMPLANT MATERIALS WITH DIFFERENT PROPERTIES
EP0032164A2 (en) * 1980-01-14 1981-07-22 GebràœDer Sulzer Aktiengesellschaft Blade-shaped shaft for an endoprosthetic joint
DE9201646U1 (en) * 1992-02-11 1992-04-02 Howmedica Gmbh, 2314 Schoenkirchen, De
DE4126837C1 (en) * 1991-08-14 1992-11-05 Aesculap Ag, 7200 Tuttlingen, De Hip joint prosthesis with tibia stem - has anti-rotation element with thickened part at stem facing edge
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USRE28895E (en) * 1972-01-13 1976-07-13 United States Surgical Corporation Artificial hip joint
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2627569A1 (en) * 1976-06-19 1977-12-22 Friedrichsfeld Gmbh Prosthesis for head of femur - has ridge at shoulder and groove reaching to lower end
DE2724041A1 (en) * 1977-05-23 1978-11-30 Sulzer Ag COMBINATION OF IMPLANT MATERIALS WITH DIFFERENT PROPERTIES
EP0032164A2 (en) * 1980-01-14 1981-07-22 GebràœDer Sulzer Aktiengesellschaft Blade-shaped shaft for an endoprosthetic joint
EP0032164A3 (en) * 1980-01-14 1981-11-04 Gebruder Sulzer Aktiengesellschaft Blade-shaped shaft for an endoprosthetic joint
DE4126837C1 (en) * 1991-08-14 1992-11-05 Aesculap Ag, 7200 Tuttlingen, De Hip joint prosthesis with tibia stem - has anti-rotation element with thickened part at stem facing edge
DE9201646U1 (en) * 1992-02-11 1992-04-02 Howmedica Gmbh, 2314 Schoenkirchen, De
CN108882982A (en) * 2015-12-30 2018-11-23 泰克里斯公司 Core for spacer
CN108882982B (en) * 2015-12-30 2021-09-07 泰克里斯公司 Core for spacer

Also Published As

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BE681618A (en) 1966-10-31
NL145755B (en) 1975-05-15
DK109052C (en) 1968-03-11
GB1071450A (en) 1967-06-07
NL6607267A (en) 1966-11-28
US3466670A (en) 1969-09-16
SE315686B (en) 1969-10-06
AT274223B (en) 1969-09-10
CH459462A (en) 1968-07-15

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