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DE1930353A1 - Joint prosthesis - Google Patents

Joint prosthesis

Info

Publication number
DE1930353A1
DE1930353A1 DE19691930353 DE1930353A DE1930353A1 DE 1930353 A1 DE1930353 A1 DE 1930353A1 DE 19691930353 DE19691930353 DE 19691930353 DE 1930353 A DE1930353 A DE 1930353A DE 1930353 A1 DE1930353 A1 DE 1930353A1
Authority
DE
Germany
Prior art keywords
joint
socket
mentioned
prosthesis
center
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
DE19691930353
Other languages
German (de)
Inventor
Halloran William Xavier
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.)
HALLORAN WILLIAM XAVIER
Original Assignee
HALLORAN WILLIAM XAVIER
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 HALLORAN WILLIAM XAVIER filed Critical HALLORAN WILLIAM XAVIER
Publication of DE1930353A1 publication Critical patent/DE1930353A1/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
    • A61F2/40—Joints for shoulders
    • 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
    • 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
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30181—Y-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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
    • A61F2002/30574—Special structural features of bone or joint prostheses not otherwise provided for with an integral complete or partial collar or flange
    • 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
    • A61F2002/30777—Oblong apertures
    • 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
    • A61F2/30767—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
    • A61F2002/30899—Protrusions pierced with apertures
    • A61F2002/30902—Protrusions pierced with apertures laterally or radially
    • 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
    • A61F2/34—Acetabular cups
    • A61F2002/344—Acetabular cups the inner shell having an inner hip femoral head-receiving cavity offset from its centre line
    • 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
    • A61F2/3662—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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/006—Y-shaped

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Description

t' G e 1 e n k - P r o t h e 5 e Die Gelenk-Prothese der vorliegenden Erfindung ist für die Verwendung in einem Kugelgelenk bestimmt wie z.B. einem Hüft-oder Schultergelenk. Die Prothese umfaßt einen Pfannenteil, der in der natürlichen Pfanne befestigt und mit einer künstlichen Pfanne versehen ist, -welche ihren Mittelpunkt in einem räumlichen Abstand von dem Rotationszentrum des Gelenkes angeordnet hat. Ein Gelenkkopf-Teil umfaßt einen Gelenkkopf, der in der künstlichen Pfanne festgehalten wird und einen Befestigungsdorn, welcher in den Mark-Kanal von Femur oder Humerus hineinragt, je nachdem ob das Gelenk ein HüSt- oder S.chultergelenk ist, Auf diese Weise wird das- Rotationszentrum des erhaltenen Gelenkes in einem räumlichen Abstand vom Rotationszentrum des natürlichen Gelenkes gehalten.t 'G e 1 e n k - P r o t h e 5 e The joint prosthesis of the present Invention is intended for use in a ball joint such as a hip or hip joint Shoulder joint. The prosthesis comprises a socket part which is in the natural socket attached and provided with an artificial pan, -which is its center at a spatial distance from the center of rotation of the joint. A joint head part comprises a joint head which is retained in the artificial socket and a mandrel that goes into the medullary canal of the femur or humerus protrudes, Depending on whether the joint is a hip or shoulder joint, this is how the center of rotation of the obtained joint at a spatial distance from the center of rotation of the natural joint.

Das Anwendungsgebiet der vorliegenden Erfindung betrifft Schulter- und Hüft-Prothesen.The field of application of the present invention relates to shoulder and hip prostheses.

Nach dem bekannten Stande der Technik umfassen Hüft- und Schulter-Gelenkprothesen künstliche Pfannen und künstlich Gelenkköpfe, jedoch wurden noch keine-derartigen Gelenk Prothesen vorgeschlagen, bei welchen das Rotationszentrum des? künstlichen Gelenkes vom Rotationszentrum des natürlichen--Gelenkes einen räumlichen Abstand aufweist.The prior art includes hip and shoulder joint prostheses artificial sockets and artificially joint heads, however, have not yet become such Joint prostheses proposed in which the center of rotation of the? artificial Joint a spatial distance from the center of rotation of the natural joint having.

Die Gelenk-Prothese der vorliegenden. Erfindung ist- gekennzeichnet durch einen Pfannen-Teil, befestigt innerhalb der Pfanne des natürlichen Gelenkes und ausgestaltet mit einer künstlichen Pfanne in einem räumlichen Abstand vom natürlichen' Rotationszentrum des Gelenkes. Der natürliche Gelenkkopf wurdevom Gelenkkopf-ausbildenden Knochen entfernt und ein Gelenkkopf-Teil an einen derartigen Knochen befestigt, das einen künstlichen Gelenkkopf einschließt, welcher drehbar in der künstlichen Pfanne-gehalten wird. Deshalb ist das Rotationszentrum der künstlichen Gelenkpfanne in einem räumlichen Abstand von der Lage des früheren, natürlichen Rotationszentrums, wodruch eine pewegungsbeschränkung durch festes oder hartes Gewebe im Gelenkbereich vermieden..wird-.The joint prosthesis of the present. Invention is marked by a socket part attached within the socket of the natural joint and designed with an artificial pan at a spatial distance from the natural ' Center of rotation of the joint. The natural joint head was developed by the joint head trainer Bone removed and a joint head part attached to such a bone, which includes an artificial joint head which is rotatable in the artificial Pan-held. That is why it is the center of rotation of the artificial joint socket at a spatial distance from the position of the earlier, natural center of rotation, Wodruch a movement restriction caused by solid or hard tissue avoided in the joint area.

Andere Gegenstände und Merkmale der Erfindung gehen aus der Betrachtung der nachfolgenden Beschreibung in Verbindung mit der beigefügten Zeichnung hervor.Other objects and features of the invention emerge from consideration the following description in conjunction with the accompanying drawing.

Beschreibung der Zeichnung Fig.l ist eine Vorderansicht einer Gelenkprothe-se, welche die vorliegende Erfindung verkörpert; Fig.2 ist eine Seivtenansicht den in Fig.1 gezeigten Gelenkprothese; Fig.3 ist eine Rückansicht der in Fig-.1 gezeigten Gelenkprothese; Fig.4 ist eine teilweise i.m Schnitt und in verkleinertem Maßstab gezeigte Vorderansicht, welche die in Fig.1 dargestellte Gelenkprothese, eingebaut im Hüftgelenk, darstellt; Fig.5 ist eine Seitenansicht des in Fig. gezeigten Hüftgelenks; Fig.6 ist ein Horizontalschnitt in vergrößertem Maßstab, entlang der Linie 6-6, der Fig.4; Fig.7 ist eine perspektivische Ansicht einer Schultergelenksprothese, welche die vorliegende Erfindung verkörpert; und Fig.8 ist eine Seitenansicht der Gelenksprothese, wie sie in Fig.7 gezeigt wird. Description of the drawing Fig.l is a front view of a joint prosthesis, embodying the present invention; Fig.2 is a Seivtenansicht the in Fig.1 shown joint prosthesis; Figure 3 is a rear view of that shown in Figure 1 Joint prosthesis; Fig. 4 is a partially in section and on a reduced scale Front view shown, which the joint prosthesis shown in Figure 1, installed in the hip joint, represents; Fig. 5 is a side view of the hip joint shown in Fig. 1; Fig. 6 is a horizontal section, on an enlarged scale, taken along line 6-6; of Figure 4; 7 is a perspective view of a shoulder joint prosthesis, embodying the present invention; and FIG. 8 is a side view of FIG Joint prosthesis as shown in Fig.7.

Beschreibung der bevorzugten Ausführungsform Die Gelenk-Prothese P, wie sie in Fig. 1 bis Fig. 6 gezeigt wird, umfaßt ein Gelenkpfannen-Teil ii, aufgenommen vom Acetabulum und ausgestaltet mit einer nach außen hin gerichteten schalenförmigen Gelenkpfanne 15. Ein Gelenkkopf-Teil, durchwegs als 17 bezeichnet, ist am Femur 19 befestigt und ausgestaltet mit einem -Gelenkkopf 21, rotierbar in der Gelenkpfanne 15 gehalten, wodurch das Rotationszentrum des resultierenden Gelenkes von dem Punkt, welcher vorher das Rotationszentrum des natürlichen Gelenkes darstellte, räumlich entfernt ist. Description of the Preferred Embodiment The joint prosthesis P, as shown in Fig. 1 to Fig. 6, comprises a joint socket part ii, taken up by the acetabulum and designed with an outwardly directed cup-shaped joint socket 15. A joint head part, consistently referred to as 17, is attached to the femur 19 and designed with a joint head 21, rotatable in of the socket 15 held, creating the center of rotation of the resulting joint from the point which previously represented the center of rotation of the natural joint, is spatially distant.

In Bezug auf Fig. ist die Gelenk-Prothese P für die Verwendung in einem HUftgelenk, allgemein als 25 bezeichnet, bestimmt, welches einen Beckenknochen 27 umfaßt, der ein Acetabulum 29 bildet, welches den natürlichen temur-Kopf (nicht gezeigt) aufnimmt. In vielen Fällen, in denen das Hüftgelenk 25 eine Entartung erlitten hat, wird das Gelenk-längere Zeit nicht traini-ert, wobei es dem umgebenden Gewebe, den Bändern und den Muskeln ermöglicht wird, in einen versteiften.und angespannten Zustand zu gelangen. Das Umgebungsgewebe wird daher folglich, wenn das Gelenk 25 operiert und in Ordnung gebracht wird, fest bleiben und das Gehen einschränken. In vielen Fällen, besonders bei älteren Menschen, kann das umgebende Gewebe nicht mehr zur Ermöglichung der Bewegungsfreiheit locker und flexibel gemacht werden, wodurch sich in dem Gelenk eine bleibende Verhärtung für das restliche Leben des Patienten ausbildet. Um diese Schwierigkeit zu überwinden, ist es wünschenswert, das- Rotationszentrum des Gelenkes aus dem natürlichen Rotationszentrum 31 in ein Rotationszentrum 33 zu verlegen, das nach außen und unten hin von diesem angeordnet ist. Dies wird erreicht, indem man dafür sorgt, daß der künstlich Gelenkpfannen-Teil 11 so geformt ist, daß er in das Acetabulum 29 hineinpaßt und den künstlichen Gelenkkopf 21 aufnimmt. Als Vorbereitung für die Gelenk-Prothese P wird der Femur-Kopf (nicht gezeigt) vom Femur 19 entfernt, und dadurch eine flachgewinkelte Außenseite 27 gebildet,- die dem Acetabulum 29 gegenübersteht.With reference to FIG. 1, the joint prosthesis P is for use in a hip joint, commonly referred to as 25, determines which is a pelvic bone 27, which forms an acetabulum 29, which forms the natural temur head (not shown). In many cases where the hip joint 25 has suffered degeneration the joint is not trained for a long time, whereby it is exposed to the surrounding tissue, allowing the ligaments and muscles to become stiff and tense State to arrive. The surrounding tissue is therefore consequently when the joint 25 operated on and put in order, staying firm and restricting walking. In many cases, especially in the elderly, the surrounding tissue cannot be made more relaxed and flexible to allow freedom of movement, causing permanent hardening in the joint for the rest Trains the patient's life. To overcome this difficulty, it is desirable the center of rotation of the joint from the natural center of rotation 31 into one To relocate center of rotation 33, which is arranged outwards and downwards from this is. This is achieved by making sure that the artificial socket part 11 is shaped so that it fits into the acetabulum 29 and the artificial joint head 21 records. In preparation for the joint prosthesis P, the femoral head (not shown) removed from the femur 19, and thereby a flat angled outer side 27 is formed, which faces the acetabulum 29.

Der Gelenkkopf-Teil 17 umfaßt einen nach abwärts gerichteten Befestigungsdorn 41, der vom Mark-Kanal 43 des Femur 19 aufgenommen wird. Der Gelenkkopf-Teil 17 umfaßt ferner einen peripheren, lasttragenden Steg 47, welcher die Wand des Femur-Knochens 19 bedeckt und das Gewicht des Patienten drauf überträgt.The joint head part 17 comprises a downwardly directed fastening mandrel 41, which is received by the medullary canal 43 of the femur 19. The swivel head part 17 also includes a peripheral load bearing web 47 which supports the wall of the femoral bone 19 covers and transfers the patient's weight to it.

Die in Fig.7 und Fig.8 gezeigte Gelenk-Prothese P' ist für die Verwendung in einem Schultergelenk, allgemein mit 51 bezeichnet, bestimmt. Das Schultergelenk 51 umfaßt ein Clavicular 55, ein Acromion 57 und eine Scapula 59, welcher unter bildung einer natürlichen Gelenkpfanne zusammenwirken, Der Humerus-Kopf 65 wird normalerweise in der Gelenkpfanne 61 unter Ausbildung eines Kugelgelenkes festgehalten. Die Prothese P' ähnelt der Prothese P mit der Ausnahme, daß der Gelenkpfannen-Teil 69 so geformt ist, daß er in die~Gelenkpfanne 61 hineinpaßt und wiederum das resultierende Rotationszentrum des künstlichen Gelenkes vom Rotationszentrum des natürlichen Gelenkes räumlich entfernt ist, und man hierdurch das Gelenk in einer Zone anordnet, in welcher das umgebende Gewebe locker ist.The joint prosthesis P 'shown in Fig.7 and Fig.8 is for use in a shoulder joint, generally designated 51, determined. The shoulder joint 51 comprises a clavicular 55, an acromion 57 and a scapula 59, which under work together to form a natural joint socket, the humeral head 65 will normally held in the socket 61 with the formation of a ball joint. The prosthesis P 'is similar to the prosthesis P with the exception that the joint socket part 69 is shaped so that it fits into the joint socket 61 and again the resulting center of rotation of the artificial joint from the center of rotation of the natural joint is spatially distant, and the joint is thereby in a zone in which the surrounding tissue is loose.

Aus dem Vorhergehenden ist ersichtlich, daß die Gelenk-Prothese der vorliegenden Erfindung ein Hilfsmittel schafft, wodurch ein Patient, der sonst für alle Zukunft ein steifes Gelenk nicht mehr verwenden könnte, den Gebrauch dieses Gelenkes wiedererlangen und aufrechterhalten.kann. Wenn auch die erzielten Körperbewegungen etwas unnatürlich sein können, ist jedoch zumindest eine Bewegung ermöglicht und die folgerichtige Gelenkverbindung wird den Patienten in den Stand setzen, Tätigkeiten durchzuführen, die sonst nicht durchgeführt werden könnten.From the foregoing it can be seen that the joint prosthesis of the present invention provides an aid, whereby a patient who is otherwise for any future could no longer use a stiff joint, the use of this Recovering and maintaining the joint. Can. Even if the body movements achieved can be somewhat unnatural, but at least movement is enabled and the consistent articulation will enable the patient to perform activities to be carried out that otherwise could not be carried out.

Zahlreiche Modifikationen und Veränderungen können mit Bezug auf die vorhergehende, detaillierte Beschreibung vorgenommen werden, ohne daß diese vom Prinzip der Erfindung oder dem Geltungsbereich der folgenden Ansprüche abweichen.Numerous modifications and changes can be made with respect to the previous detailed description can be made without this from Principle of the invention or the scope of the following claims may vary.

Claims (7)

P b t e n t a n 5 p r ü c h e P b t e n t a n 5 p r ü c h e Gelenk-Prothese TUP ein Kugelgelenk, wobei das das Gelenk umgebende Gewebe zumindest teilweise versteift und der natürliche Gelenkkopf vom Knochenschaft entfernt ist, dadurch gekennzeichnet, daß die Prothese einen in der natürlichen Gelenkpfanne des erwähnten Gelenkes zu befestigenden GelenkpfannenTeil, der mit einer kunstlichen Gelenkpfanne, welche ihr Rotationszentrum in räumlicher Entfernung von dem natUrlichen Rotationszentrum des besagten Kugelgelenkes hat, ausgebildet ist, und einen-Gelenkkopf-Teil, der einen Gelenkkopf, welcher in der erwähnten, künstlichen Gelenkpfanne festgehalten wird und ein Hilfsmittel in Form z eines schlanken Dornes zur Befestigung des erwähnten Gelenkkopf-Teiles an dem Knochenschaft umfaßt, wodurch das Rotationszentrum der erwähnten Prothese vom Rotationszentrum des erwähnten natürlichen Xugelgelenkes räumlich verschoben wird und hierdurch die Gelenkverbindung unbeeinflußt durch das versteifte Gewebe bleibt, umfaßt. Joint prosthesis TUP a ball and socket joint, the one surrounding the joint Tissue at least partially stiffened and the natural joint head from the bone shaft is removed, characterized in that the prosthesis is one in the natural Joint socket of the mentioned joint to be fastened joint socket part, which with an artificial joint socket, which has its center of rotation at a spatial distance from the natural center of rotation of said ball joint is, and a joint head part, which is a joint head, which in the mentioned, artificial joint socket is held and an aid in the form of a slim Includes a mandrel for fastening said joint head part to the bone shaft, whereby the center of rotation of the mentioned prosthesis from the center of rotation of the mentioned natural x-ball joint is spatially displaced and thereby the joint connection remains unaffected by the stiffened tissue. 2. Gelenk-Prothese flach Anspruch l, dadurch gekennzeichnet, daß sie der Verwendung in einem Hüftgelenk angepaßt ist und worin der erwähnte Gelenkkopf-Teil einen lasttragenden Steg zur Unterstützung durch den Femur umfaßt.2. Joint prosthesis flat claim l, characterized in that it is adapted for use in a hip joint and wherein said joint head part includes a load bearing web for support by the femur. 3. Gelenk-Prothese nach Anspruch 15 dadurch gekennzeichnet, daß sie der Verwendung in einem Ilüftgelenk angepaßt ist und worin der erwähnte Gelenkpfannen-Teil passend für das Acetabulum geformt ist.3. Joint prosthesis according to claim 15, characterized in that it is adapted for use in a hip joint and wherein said socket part is shaped to fit the acetabulum. 4. Gelenk-Prothese nach Anspruch 1, dadurch gekennzeichnet, daß sie der Verwendung in einem Schultergelenk angepaßt ist und worin der erwähnte Gelenkpfannen-Teil passend für die Humerus-Gelenkfläche der Scapula geformt ist.4. joint prosthesis according to claim 1, characterized in that it is adapted for use in a shoulder joint and wherein said socket part is shaped to fit the humeral articular surface of the scapula. 5. Gelenk-Prothese nach Anspruch 3, dadurch gekennzeichnet, daß der erwähnte Gelenkkopf-Teil einen lasttragenden Steg für die Unterstützung durch den Femur umfaßt.5. joint prosthesis according to claim 3, characterized in that the mentioned articulated head part a load-bearing web for the support of the Includes femur. 6. Gelenk-Prothese nach Anspruch 3, dadurch gekennzeichnet, daß das erwähnte hilfsmittel in Form eines schlanken Dornes, passend. für die Aufnahme in den Itark-ISanal des Femur, geformt ist.6. joint prosthesis according to claim 3, characterized in that the Mentioned tools in the form of a slender thorn, suitable. for inclusion in the Itark canal of the femur. 7. Gelenk-Prothese nach Anspruch 3, dadurch gekennzeichnet, daß das erwähnte Hilfsmittel in Form eines schlanken Dornes, passend für die Aufnahme in den Mark-Kanal des Humerus, geformt ist.7. joint prosthesis according to claim 3, characterized in that the Mentioned aids in the form of a slender mandrel, suitable for inclusion in the medullary canal of the humerus. L e e r s e i t eL e r s e i t e
DE19691930353 1968-06-17 1969-06-14 Joint prosthesis Pending DE1930353A1 (en)

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US73762868A 1968-06-17 1968-06-17
US4238870A 1970-06-01 1970-06-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619502A1 (en) * 1987-08-19 1989-02-24 Matco Cranial or total shoulder prosthesis
EP0329854A1 (en) * 1988-02-02 1989-08-30 David M. Dines Modular shoulder prothesis
DE3811207A1 (en) * 1988-04-01 1989-10-12 Berchem & Schaberg Gmbh JOINT PROSTHESIS, IN PARTICULAR HIP JOINT PROSTHESIS

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3364860D1 (en) 1982-04-07 1986-09-04 Nat Res Dev Endoprosthetic bone joint devices
GB8310675D0 (en) * 1983-04-20 1983-05-25 Church J C M Endoprosthetic bone joint devices
FR2651674B1 (en) * 1989-09-14 1993-04-30 Bolze Chantal TOTAL HIP PROSTHESIS TYPE C.B.II.
EP0761183B1 (en) * 1995-08-25 2002-05-08 Bristol-Myers Squibb Company Prosthetic implant with fins
GB9620998D0 (en) * 1996-10-09 1996-11-27 Minnesota Mining & Mfg Shoulder prosthesis
GB9707371D0 (en) 1997-04-11 1997-05-28 Minnesota Mining & Mfg A modular humeral prosthesis
DE19746984A1 (en) * 1997-10-24 1999-04-29 Peter Brehm Anchoring shaft for replacement hip has Y-shaped upper area
US7189261B2 (en) 1998-04-03 2007-03-13 Smith & Nephew, Inc. Modular humeral prosthesis and method
FR2794641B1 (en) 1999-06-09 2001-11-23 Tornier Sa HUMER PROSTHESIS
US7097663B1 (en) 2001-12-17 2006-08-29 Smith & Nephew, Inc. Modular prosthesis system with novel locking mechanism
FR2903882B1 (en) * 2006-07-24 2008-10-10 Rech S Et De Fabrication S E R INSERT FOR COTYLOID IMPLANT WITH DOUBLE MOBILITY, CORRESPONDING COTYLOID IMPLANT AND PROSTHESIS OF CORRESPONDING HIP
ITMI20061568A1 (en) * 2006-08-03 2008-02-04 Plustek S R L SHOULDER PROSTHESIS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619502A1 (en) * 1987-08-19 1989-02-24 Matco Cranial or total shoulder prosthesis
EP0329854A1 (en) * 1988-02-02 1989-08-30 David M. Dines Modular shoulder prothesis
DE3811207A1 (en) * 1988-04-01 1989-10-12 Berchem & Schaberg Gmbh JOINT PROSTHESIS, IN PARTICULAR HIP JOINT PROSTHESIS

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