DE2839661A1 - COMPLETE HIP JOINT ENDOPROSTHESIS - Google Patents

COMPLETE HIP JOINT ENDOPROSTHESIS

Info

Publication number
DE2839661A1
DE2839661A1 DE19782839661 DE2839661A DE2839661A1 DE 2839661 A1 DE2839661 A1 DE 2839661A1 DE 19782839661 DE19782839661 DE 19782839661 DE 2839661 A DE2839661 A DE 2839661A DE 2839661 A1 DE2839661 A1 DE 2839661A1
Authority
DE
Germany
Prior art keywords
capsule
shell
acetabular
joint
hip joint
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.)
Ceased
Application number
DE19782839661
Other languages
German (de)
Inventor
Alexander Ivanov Dr Gertschev
Venelin Ivanov Dipl In Maranov
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.)
Medizinska Akademia
Original Assignee
Medizinska Akademia
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 Medizinska Akademia filed Critical Medizinska Akademia
Publication of DE2839661A1 publication Critical patent/DE2839661A1/en
Ceased legal-status Critical Current

Links

Classifications

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    • A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
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    • 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
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    • 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
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    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0036—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in thickness
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    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys

Description

26396612639661

BESCHREIBUNGDESCRIPTION

Die Erfindung betrifft eine vollständige Hülft-Gelenk-Endoprothese, die in der Orthopädie und Traumatologie Verwendung als Ersatz für beschädigte natürliche Hüftgelenke findet.The invention relates to a complete hip-joint endoprosthesis, which is used in orthopedics and traumatology as a replacement for damaged natural hip joints.

Es sind verschiedene vollständige Hüft-Gelenk-Endoprothesen bekannt, die unschließbare auseinandernehmbare oder schließbare nichtauseinandernehmbare Konstruktionen darstellen und an den Knocken durch Kleben mit Knochenzement oder durch mechanisches Festkeilen befestigt werden.There are various complete hip and joint endoprostheses are known to represent non-lockable disassemblable or lockable non-disassemblable structures and attached to the knuckles by gluing with bone cement or by mechanical wedging.

Es ist ferner eine Konstruktion bekannt, bei der der Stiel konisch ist und mechanisch mit Medullärkanal des Femurs festgekeilt wird, während die Acetabularkapsel im Hüftbein mittel zweier Schrauben, die mit L-förmigen Muttern enden, mechanisch befestigt wird.A construction is also known in which the stem is conical and mechanically connected to the medullary canal of the femur is wedged in place while the acetabular capsule is wedged in the hipbone by means of two screws that end with L-shaped nuts. mechanically attached.

Es ist ferner eine Konstruktion mit demselben Stiel bekannt, jedoch endet die Acetabularkapsel mit einer Schraube, die im Hüftbein eingeschraubt wird.It is also known a construction with the same stem, but the acetabular capsule ends with a screw that is screwed into the hip bone.

Es sit auch eine Konstruktion bekannt, bei der der Stiel flach und glatte Wände hat und bei der die Acetabularkapsel mit drei scharfen Stacheln endet, die in einen bearbeiteten Sitz im natürlichen Acetabulum eingesochen werden.A construction is also known in which the stem has flat and smooth walls and in which the acetabular capsule also has ends with three sharp spines that are cut into a machined seat in the natural acetabulum.

Es ist ferner auch eine nichtauseinandernehmbare Konstruktion bekannt mit einem kegelförmigen Stiel mit zwei länglichen Löchern, der im Medullärkanal festgekeilt wird, während der kugelförmige Teil des Stiels fest mit dem Stiel verbunden ist. Der Sitz ist in einer Metallkapsel und einem anderen Metall fesgenietet, dessen Peropherie mit Zähnen versehen sind, dieA non-disassemblable construction is also known with a conical stem with two elongated ones Holes wedged into the medullary canal while the spherical part of the stem is firmly attached to the stem. The seat is riveted in a metal capsule and another metal, the peropherie of which are provided with teeth that

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zur Verankerung im natürlichen Acetabulum dienen.serve for anchoring in the natural acetabulum.

Weiterhin ist auch eine ähnliche Konstruktion mit nichtaustauschbarer Kunststoffschale und Anziehmutter bekannt, die ein Auseinandernehmen des Gelenks erlaubt, jedoch nur während der Implantierung.Furthermore, there is also a similar construction with non-interchangeable Plastic shell and tightening nut known that allow the joint to be dismantled, but only during the implantation.

Bekannt sind auch vollständige Hüft-Gelenk-Endoprothesen, bei denen sowohl der Stiel, als auch die Acetabularkapsel an den Knochen mittels Knochenzement befestigt werden.Complete hip-joint endoprostheses are also known, in which both the stem and the acetabular capsule are attached to the bone with bone cement.

Bekannt ist auch ein Fermurstiel einer unipolaren Hüft-Gelenk-Prothese, der querverzahnt ist und runde Löcher an der Basis der Zähne hat.A Fermur stem of a unipolar hip-joint prosthesis is also known, which is cross-toothed and has round holes at the base of the teeth.

Jede der bekannten Konstruktionen der Hüft-Gelenk-Prothesen hat jedoch wesentliche Nachteile.Any of the known constructions of hip joint prostheses however, it has significant disadvantages.

Die Nichtschließbaren auseinandernehmbaren Konstruktionen erlauben eine selbstständige Luxation des Gelenks bei verhältnismäßig kleinen nichtfunktionellen Belastungen, während die schließbaren nichtauseinandernehmbaren Konstruktionen bei großen nichtfunktionellen Belastungen ein Brechen des Femurs oder des Hüftbeins hervorrufen können im Unterschied zu dem natürlichen Gelenk, das bei solchen maximalen Beanspruchungen ohne Brechen luxieren würde. Ein anderer wesentlicher Nachteil der nichtauseinandernehmbaren Konstruktionen ist ihre schwierige Implantierung, die das Herausschneiden eines großen Teils des Trochanders erfordert.The non-closable detachable constructions allow an independent dislocation of the joint with relatively small non-functional loads, while the closable non-disassemblable structures large non-functional loads can cause fracture of the femur or the hip bone in contrast to the natural joint that would dislocate without breaking under such maximum stress. Another major disadvantage One of the non-disassemblable constructions is their difficult implantation that involves cutting out a large one Requires part of the trochander.

Ein wesentlicher Nachteil der Hüft-Gelenk-Protehsen mit konischem Stiel ist die häufig in der Praxis in Erscheinung tretende Lockerung des Stiels im Medullärkanal, was zur Rotation und Instabilität des Gelenks führt und Ursache von starken Schmerzen ist, die jegliche Bewegung der unteren Extremität begrenzen.A major disadvantage of using hip-joint prostheses conical stem is the loosening of the stem in the medullary canal that often appears in practice, which leads to Rotation and instability of the joint leads and is cause of severe pain that is any movement of the lower extremity limit.

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Ein wesentlicher Nachteil der einzelnen bekannten Hüft-Gelenk-Prothesen ist einerseits, das Fehlen einer Möglichkeit ihrer Variierung in Abhängigkeit von den jeweiligen klinischen Indikationen während der Implantierung, und, andererseits, die Notwendigkeit zum Austausch der gesamten Endoprothese oder ihrer Einzelteile bei sekundärer Fragmentation der Knochen infolge von Mißerfolgen im Post-operativen Zeitraum. So ist, z.B. bei Endoprothesen mit Metallkugel und Nichtmetallkapsel der Verschleiß infolge Abrieb der Kunststoffkapsel eine häufige Erscheinung, die bei Reoperation den Austausch der gesamten Acetabularkapsel durch eine neue erforderlich macht, was zur sekundären Traumatisierung des Hüftbeins führt.A major disadvantage of the individual known hip joint prostheses is, on the one hand, the lack of a possibility of their variation depending on the particular clinical Indications during implantation and, on the other hand, the need to replace the entire prosthesis or their individual parts in the case of secondary fragmentation of the bones as a result of failures in the post-operative period. This is the case, for example, with endoprostheses with metal balls and non-metal capsules Wear and tear as a result of abrasion of the plastic capsule is a common occurrence, which must be replaced during reoperation the entire acetabular capsule requires a new one, which leads to secondary traumatization of the hipbone.

Der Erfindung liegt die Aufgabe zugrunde, eine vollständige Hüft-Gelenk-Endoprothese zu entwickeln, die eine Auswahl der einzelnen Komponenten des Satzes (Femurstiele und Acetabularkapseln) ermöglicht in Abhängigkeit der konkreten klinischen Indikationen für Kleben oder mechanische Befestigung an den Knochen während der Operation, sowohl auch die Möglichkeit des leichten und nichttraumierenden Austausches von einzelnen verschlissenen oder gelockerten Elementen, bei eventueller Reoperation. Eine stabile Befestigung an den entsprechenden Knochen sichernd, soll die Konstruktion auch eine physiologische Kuppelung der Gelenkverbindung gewährleisten, die dem Antiluxationsvermögen des natürlichen Gelenks entspricht, wobei sie auseinandernehmbar sein muß mit bezug auf leichte Manipulierung während der Operation, und so konstruiert sein muß, daß sie keine Erhöhung des Innendrucks im Medullärkanal während des Aufsteckens des Stiels verursacht.The invention is based on the object of a complete Hip joint endoprosthesis to develop that has a choice the individual components of the set (femoral stems and acetabular capsules) enables adhesive or mechanical fastening, depending on the specific clinical indications on the bones during the operation, as well as the possibility of easy and non-traumatic exchange of individual worn or loosened elements, in the event of a possible reoperation. A stable attachment to the appropriate Securing bones, the construction should also ensure a physiological coupling of the joint connection, which corresponds to the antiluxation capacity of the natural joint, being able to be disassembled for easy manipulation during surgery, and so constructed must be that they do not increase the internal pressure in the medullary canal caused during attachment of the handle.

Diese Aufgabe wird erfindungsgemäß durch eine auseinandernehmbare vollständige Hüft-Gelenk-Prothese gelöst, die aus einem Satz aus zwei Acetabularkapseln (die eine aus Metall und mit verzahnter Außenfläche für mechanische Befestigung,According to the invention, this object is achieved by a detachable complete hip-joint prosthesis, which is made up of a set of two acetabular capsules (one made of metal and with a toothed outer surface for mechanical fastening,

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die andere aus Metall oder Kunststoff, geeignet zum Kleben mit Knockenzement) und aus zwei Femurstielen (der eine rechteckig und verzahnt in seinem oberen Teil zwecks mechanischer Befestigung und der andere - flach und mit glatten Wänden zum Kleben mit Zement) besteht, die in gewünschter Kombination miteinander verbunden werden durch Einfügen der Femurkugel in eine nichtmetallische Schale und Festziehen mit einer Mutter, wobei die nichtmetallische Schale ausbaufähig in ein entsprechendes Gegenstück der Acetabularkapsel eingesteckt ist, drei Viertel der Kugel umfaßt und in seiner äußerlich konisch gestalteten Peripherie Einschnitt aufweist, die Bohrung der Festziehmutter von Innen kegelförmig ist, mit Abmessungen gleich denen der nichtmetallischen Schale, und in den glatten Wänden des Femurstiels Längskanäle mit ovalem Querschnitt eingearbeitet sind.the other made of metal or plastic, suitable for gluing with bone cement) and two femoral stems (one rectangular and interlocked in its upper part for the purpose of mechanical fastening, and the other - flat and with smooth walls for gluing with cement), which are connected to one another in the desired combination by inserting the femoral ball into a non-metallic shell and tightening with a nut, the non-metallic shell being expandable into one corresponding counterpart of the acetabular capsule inserted is, three quarters of the ball and comprises in its externally conical periphery incision, the bore the inside of the tightening nut is conical, with dimensions equal to those of the non-metallic shell, and in the smooth walls of the femoral pedicle, longitudinal channels with an oval cross-section are incorporated.

Die Vorteile der erfindungsgemäßen vollständigen Hüft-Gelenk-Prothese liegen darin, daß die auseinandernehmbare Schale in dem die Metallkugel rotiert, nichtmetallisch ist, eine minimale Reibung und das Fehlen eines bimetallischen Korrosionseffekts gewährleistet, leicht ist und bei eventuellem Verschleiß ohne Traumierung austauschbar ist. Die radialen Einschnitte in ihrer Peripherie erlauben einerseits das Umfassen von drei Vierteln der rotierenden Kugel beim Zusammenbau des Gelenks/ andererseits sichern sie beim Festziehen der Mutter ein Schließen des Gleenks mit einer Kraft, die beim physiologischen Antiluxationsvermögen des natürlichen Gelenks eintspricht, so daß ein eventuelles Losbrachen der Acetabularkapsel vom Hüftbein oder ein Brechen des Femurs vermieden werden. Das Auseinandernehmen beider Teile des Gelenks (Acetabularkapsel mit nichtmetallischer Schale und Femurstiel) ermöglicht eine leichte Manipulation während der Implantierung, während die ovalen Längskanäle in den glatten Wänden des Femurstiels eine Erhöhung des Drucks im Medullärkanal während des Einsteckens des Stiels im Femur verhindern.The advantages of the complete hip-joint prosthesis according to the invention is that the disassemblable shell in which the metal ball rotates is non-metallic, minimal Friction and the absence of a bimetallic corrosion effect guaranteed, is light and with possible wear is interchangeable without dreaming. On the one hand, the radial incisions in their periphery allow them to be embraced of three quarters of the rotating ball when assembling the joint / on the other hand they secure when tightening the Mother closes the joint with a force that is comparable to the physiological antiluxation capacity of the natural joint corresponds, so that a possible breaking loose of the acetabular capsule from the hipbone or a breaking of the femur can be avoided. Taking apart both parts of the joint (acetabular capsule with non-metallic shell and femoral stem) enables easy manipulation during implantation, while the oval longitudinal channels in the smooth walls of the femoral stem cause an increase in pressure in the medullary canal during the Prevent insertion of the stem into the femur.

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Der Vorteil der beschriebenen vollständigen Huft-Gelenk-Prothese liegt darin, daß sie allen Aufgaben der Erfindung gerecht wird, und insbesondere wegen der mechanisch zu befestigenden oder mit Knockenzement zu klebenenden Komponenten, die untereinander mittels einer einheitlichen nichtmetallischer Schale mit Mutter verbunden sind, während der Implantierung oder bei Reoperation dem Operierenden ermöglicht, die Wahl der zweckmäßigsten Befestigungsart entsprechend den konkreten klinischen Indikationen zu treffen.The advantage of the complete hip joint prosthesis described is that it meets all of the objects of the invention, and in particular because of the mechanically fastened or components to be glued with cement that are to be bonded to one another are connected to the nut by means of a uniform non-metallic shell, during or at the time of implantation Reoperation enables the surgeon to choose the most appropriate type of fixation according to the specific clinical situation To meet indications.

Die Erfindung wird nachstehend an einem Ausführungsbeispiel näher erläutert. Die zugehörige Zeichnung zeigt schematisch die Bauteile des Satzes einer vollständigen Huft-Gelenk-Prothese.The invention is explained in more detail below using an exemplary embodiment. The accompanying drawing shows schematically the Components of the complete hip joint prosthesis set.

Die austauschbare nichtmetallische Schale 1, worin die Kugel 2 des Stiels 3 rotiert, weist einen Zapfen 4 auf, der auseinandernehmbar, jedoch keine Rotation erlaubend, im Loch 5 der Acetabularkapsel 6 eingepreßt wird. Damit das Gelenk nicht luxiert, geht die Peripherie 7 der kugelförmigen Reibfläche 8 im Sitz 1 bis unter den Aequator der Kugel 2 hinunter. Entlang der Peripherie 7 sind radiale Einschnitte 9 vorgesehen, die es erlauben durch leichten Druck die Kugel 2 in die Schale 1 einzuführen. Zur Befestigung des Sitzes 1 in der Kapsel 5 und zwecks physiologischen Befestigens der Kugel 2 in die Schale 1, wird in die Kapsel 5 eine Festziehmutter 10 eingeschraubt, die mit ihrer inneren konischen Wand 11 sich an die konische Peripherie 7 mit Einschnitten der Schale 1 andrückt und das Gelenk gegen eigenmächtige Luxierung sichert. Dieser Andruck entspricht der Forderung für eine freie Rotation der Kugel und der Möglichkeit eines selbstständigen Lösens bei Belastungen, die eine Luxierung eines normalen natürlichen Gelenks hervorrufen würden. Dadurch wird ein eventuelles Brechen des Femurs oder ein Losbrechen der Acetabularkapsel vermieden.The replaceable non-metallic shell 1 in which the ball 2 of the stem 3 rotates, has a pin 4, which can be dismantled, but does not allow rotation, in the hole 5 the acetabular capsule 6 is pressed in. So that the joint does not dislocate, the periphery 7 goes to the spherical friction surface 8 in seat 1 down to below the equator of ball 2. Radial incisions 9 are provided along the periphery 7, which allow the ball 2 to be inserted into the shell 1 by applying slight pressure. To fix the seat 1 in the capsule 5 and for the purpose of physiological fastening of the ball 2 in the shell 1, a tightening nut 10 is screwed into the capsule 5, which with its inner conical wall 11 presses against the conical periphery 7 with incisions in the shell 1 and that Secures joint against unauthorized dislocation. This pressure corresponds to the requirement for free rotation of the ball and the possibility of independent loosening under loads that dislocate a normal natural joint would evoke. This will prevent the femur from breaking or the acetabular capsule from breaking loose.

909838/0557909838/0557

Die Acetabularkapseln 6 haben in ihrer Innenseite eine Vertiefung 12 für die Aufnahme der austaschbaren nichtmetallischen Schale 1 und ein Loch 5 für das Einpressen seines Zapfens 4, sowie ein Gewinde 13 für das Aufschrauben der Festziehmutter 10. An der Außenseite der mechanisch befestigten Acetabularkapsel 6M sind besonders geformte Zähne 14 zum Festkeilen in dem im vorbereiteten Sitz im natürlichen Acetabulum vorgesehen. Die Außenseite der zu klebenden Acetabularkapsel 6c (aus Metall oder Kunststoff) weist Nuten 15 auf zwecks einer sicheren Verbindung mit dem Knockenzement.The acetabular capsules 6 have a recess 12 on their inside for receiving the replaceable non-metallic ones Shell 1 and a hole 5 for pressing in its pin 4, as well as a thread 13 for screwing on the tightening nut 10. On the outside of the mechanically attached acetabular capsule 6M are specially shaped teeth 14 for wedging in the one provided in the prepared seat in the natural acetabulum. The outside of the acetabular capsule to be glued 6c (made of metal or plastic) has grooves 15 for the purpose of a secure connection with the lug cement.

Die Femurstiele haben einen im Vorderteil verlängerten Ansatz 16, der auf die Corticalkontur in der Basis des Collumfemuris aufliegt. Auf diese Weise trägt der Stiel sicher das Körpergewicht, ohne in das weiche spongiose Gewebe des Kriochenkerns zu sinken. Der mechanisch befestigte Stiel 3M ist breit und rechteckig zwecks Vermeidung einer Verdrehung gegenüber dem Femur. In seinem oberen Bereich ist der Stiel '3M mit Zähnen 17 versehen, zwischen die Löcher 18 gebohrt sind. Die Zähne dienen zur Erweiterung von mit speziellen Feilen im Femur eingearbeiteten öffnung und zwar wegen Abspaltung von Knochenspänen, welche die runden Löcher und den Raum zwischen Zähnen und Knochen ausfüllen. Als Ergebnis der Einbindung dieser Späne in der postoperativen Periode wird eine sichere Verbindung des Stiels und des Femurs erreicht. In seinem unteren Bereich ist der rechteckige Stiel glatt, jedoch mit ovalen Längskanälen 19M in seinen vier Seiten versehen, welche ein Anwachsen des Drucks im Medullärkanal beim Einstecken des Stiels in den Knochen verhindern. Der zu klebende Stiel 3c ist schmaler als der mechanisch zu befestigende Stiel 3M wegen des Füllens der Öffnung im Femur mit der nötigen Menge Knochenzement. Sein Querschnitt ist ein flaches Sechseck mit abgerundeten Kanten und mit ovalen Längskanälen 19c entlang der äußeren Kanten. Seine Wände sind glatt und die Wirkung der ovalen Kanäle ist die gleiche, wie die der Kanäle 19M.The femoral stalks have an extension that is elongated in the front 16, which is on the cortical contour in the base of the collum femur rests. In this way, the handle safely bears the body weight without getting into the soft cancellous tissue of the To sink tartar kernel. The mechanically attached handle 3M is wide and rectangular to prevent twisting opposite the femur. In its upper area, the handle 3M is provided with teeth 17, drilled between the holes 18 are. The teeth serve to widen openings made in the femur with special files because of the splitting off of bone chips filling the round holes and the space between teeth and bones. As a result By integrating these chips in the postoperative period, a secure connection between the stem and the femur is achieved. In its lower area, the rectangular handle is smooth, but provided with oval longitudinal channels 19M in its four sides, which prevent an increase in pressure in the medullary canal when the stem is inserted into the bone. The one to be glued Stem 3c is narrower than the mechanically fastened stem 3M because of the filling of the opening in the femur the necessary amount of bone cement. Its cross-section is a flat hexagon with rounded edges and oval longitudinal channels 19c along the outer edges. Its walls are smooth and the effect of the oval channels is the same as that of channels 19M.

909838/0557909838/0557

Die vollständige Hüft-Gelenk-Endoprothese gemäß der Erfindung wird folgenderweise implantiert: Gemäß den konkreten klinischen Indikationen für Festkeilen oder Kleben werden die geeigneten Acetabularkapsel und Femurstiel gewählt. Es stehen vier verschiedene Kombinationen zur Wahl - vollständig geklebtes Gelenk oder vollständig mechanisch befestigtes Gelenk, geklebte Acetabulumkapsel und mechanisch befestigter Stiel, oder mechanisch befestigte Acetabulumkapsel und geklebter Stiel. Beide Teile des Gelenks werden separat an die im voraus vorbereiteten Femur und Hüftbein fixiert. Danach wird die Stielkugel in die kugelförmige Öffnung der nichtmetallischen Schale eingeführt und darin mittels der Festziehmutter befestigt. Bei Reoperation wird das Gelenk durch Losschrauben der Mutter "geöffnet" und das schadhafte Teil wird durch ein neues ersetzt, ohne daß die sicher befestigten Teile gelöst werden. Am Schluß wird das Gelenk erneut "geschlossen".The complete hip joint endoprosthesis according to the invention is implanted as follows: According to the specific clinical indications for wedging or gluing, the appropriate acetabular capsule and femoral stem selected. There are four different combinations to choose from - fully glued Articulated or fully mechanically fastened joint, glued acetabular capsule and mechanically fastened Stem, or mechanically attached acetabular capsule and glued stalk. Both parts of the joint are attached separately the previously prepared femur and hipbone are fixed. Then the stem ball is inserted into the spherical opening of the introduced non-metallic shell and fixed therein by means of the tightening nut. During reoperation the joint will by unscrewing the nut "opened" and the damaged part is replaced by a new one without the securely fastened Parts are solved. At the end the joint is "closed" again.

Die klinischen Ergebnisse von der Implantierung der erfindungsgemäßen vollständigen Hüft-Gelenk-Endoprothese sind zufriedenstellend in bezug auf Wirkung und dynamische Stabilität. The clinical results from the implantation of the invention complete hip joint endoprostheses are satisfactory in terms of effect and dynamic stability.

909838/0557909838/0557

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Claims (1)

SCHIFF ν. FÜNER STREHL SCHÜBEL-HOPF EBBINGHAUS FINCKSHIP ν. FÜNER STREHL SCHÜBEL-HOPF EBBINGHAUS FINCK MARIAHILFPLATZ 2 & 3, MaNCH£N 90 POSTADRESSE: POSTFACH 95 O1 SO, D-8OOO MÜNCHEN 9SMARIAHILFPLATZ 2 & 3, MAN £ N 90 POSTAL ADDRESS: POST BOX 95 O1 SO, D-8OOO MUNICH 9S PROrESSlONAU REPRESENTATIVES ALSO ElEFOFiE THB EUROPEAN PATENT OFFICEPROrESSlONAU REPRESENTATIVES ALSO ElEFOFiE THB EUROPEAN PATENT OFFICE MEDIZINSKA AKADEMIA DEA/G-18809MEDIZINSKA AKADEMIA DEA / G-18809 KARL LUDWIG SCHIFFKARL LUDWIG SCHIFF DIPL. CHEM. DR. ALEXANDER V. FÜNERDIPL. CHEM. DR. ALEXANDER V. FÜNER D]PL. INS. PETER STREHLD] PL. INTO THE. PETER STREHL DIPL. CHEM, DR. URSULA SCHÜBEL-HOPFDIPL. CHEM, DR. URSULA SCHÜBEL-HOPF DIPL. ING. DIETER EBBINGHAUSDIPL. ING. DIETER EBBINGHAUS DR, ING. DIETER FINCKDR, ING. DIETER FINCK TELEFON (O39) -JB 2O 54TELEPHONE (O39) -JB 2O 54 TELEX 5-23 565 AURO DTELEX 5-23 565 AURO D TELEGRAMME AÜROMARCPAT MÜNCHENTELEGRAMS AÜROMARCPAT MUNICH 12. September 1978September 12, 1978 Vollständige Hüft-Gelenk-Endoprothese PATENTANSPRUCH Complete hip joint endoprosthesis PATENT CLAIM Auseinandernehmbare vollständige Hüft-Gelenk-Endoprothese, bestehend aus zwei wahlweise verwendbaren Acetabularkapseln, die eine mechanisch zu befestigen (6M) und die andere zum Kleben mit Knochenzement (6c) und zwei wahlweise verwendbaren Pemurstielen, der eine mechanisch zu befestigen (3M) und der andere zu Kleben mit Knockenzement (3c), die gemäß der klinischen Indikationen untereinander in vier Kombinationen mittels nichtmetallischer Schale (1) und Festziehmutter (10) verbunden werden können, dadurch gekennzeichnet , daß die nichtmetallische Schale (1) in der öffnung (12) der Acetabularkapsel (6) einfügbar ist und mit ihr mittels seines Zapfens (4) und der im Gewinde &13) der Kapsel (6) einschraubbaren Festziehinutter (10) verbindbar ist, wobei diese Schale an ihrerDetachable complete hip joint endoprosthesis, consisting of two optionally usable acetabular capsules, one to be fixed mechanically (6M) and the other to be glued with bone cement (6c) and two can be used optionally Pemurstielen, one to be fixed mechanically (3M) and the other to be glued with knuckle cement (3c), according to the clinical Indications linked to one another in four combinations by means of a non-metallic shell (1) and a tightening nut (10) can be, characterized in that the non-metallic shell (1) in the opening (12) of the acetabular capsule (6) can be inserted and with it by means of its pin (4) and the one that can be screwed into the thread & 13) of the capsule (6) Tightening nut (10) can be connected, this shell on its 909838/0557909838/0557 ORIGINAL INSPECTEDORIGINAL INSPECTED äußeren kegeligen Fläche (7) mit radialen Einschnitten (9) versehen ist, die eine drei Viertel kugelförmige Vertiefung (δ) bilden, wobei die Festziehmutter (10) eine innere kegelförmige Fläche (11) hat, die mit der kegeligen Außenfläche (7) der Schale (1) übereinstimmt, und wobei in den glatten Bereichen des Femur-Stiels (3) ovale Längskanäle (19) eingearbeitet sind.outer conical surface (7) is provided with radial incisions (9) which form a three-quarter spherical recess (δ) Form, wherein the tightening nut (10) has an inner conical surface (11) with the conical outer surface (7) of the Shell (1) matches, and oval longitudinal channels (19) are incorporated into the smooth areas of the femoral stem (3). 909838/0557909838/0557
DE19782839661 1978-03-17 1978-09-12 COMPLETE HIP JOINT ENDOPROSTHESIS Ceased DE2839661A1 (en)

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EP0091315A1 (en) * 1982-04-07 1983-10-12 National Research Development Corporation Endoprosthetic bone joint devices
US4422187A (en) * 1980-01-14 1983-12-27 Sulzer Brothers Limited Shank for a joint endoprosthesis
DE3310486A1 (en) * 1982-04-10 1984-10-04 Günther Dr.med. 7400 Tübingen Aldinger Endoprosthesis with a profiled anchorage stem
DE3426947A1 (en) * 1984-06-07 1985-12-12 Harry Prof. Dr.med. 1000 Berlin Buse Self-adhesive, cementless implantable hip implant
US4659067A (en) * 1984-09-10 1987-04-21 Fournier Jacques A Implant for coxofemoral prosthesis
DE3701198A1 (en) * 1987-01-15 1988-07-28 Buse Harry HIPSTER IMPLANT
US4770661A (en) * 1982-01-18 1988-09-13 Indong Oh Conversion femoral endoprosthesis
DE8810783U1 (en) * 1988-06-06 1988-10-20 Mecron Medizinische Produkte Gmbh, 1000 Berlin, De
US4846839A (en) * 1984-02-09 1989-07-11 Joint Medical Products Corporation Apparatus for affixing a prosthesis to bone
US5725594A (en) * 1994-07-14 1998-03-10 Ortho Development Corporation Proximal conical stem
US6332896B1 (en) 1994-07-14 2001-12-25 Ortho Development Corporation Orthopaedic implant with proximal collar

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FR2628314A1 (en) * 1988-03-11 1989-09-15 Osteal Medical Laboratoires Artificial loxo-femoral leg joint - with cotyle piece provided with spiked head to formally anchor part in bone
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FR2770770B1 (en) * 1997-11-07 2002-06-21 Fixano ARRANGEMENT OF ELEMENTS FOR THE CONSTITUTION OF A TRAPEZO-METACARPIAN JOINT PROSTHESIS
IT245363Y1 (en) * 1998-05-12 2002-03-20 Tian Enrico ANTI-LUXURY ANKLE PROSTHESIS
SK284754B6 (en) * 1999-05-13 2005-11-03 Marcel �It�Ansk� Cementless total replacement of the human hip joint
US6652590B1 (en) 2000-05-11 2003-11-25 Marcel Zitnansky Cementless total replacement of the human hip joint
US8123815B2 (en) 2008-11-24 2012-02-28 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US8308810B2 (en) 2009-07-14 2012-11-13 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis

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Cited By (18)

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Publication number Priority date Publication date Assignee Title
US4422187A (en) * 1980-01-14 1983-12-27 Sulzer Brothers Limited Shank for a joint endoprosthesis
EP0065482A3 (en) * 1981-05-18 1983-01-05 Mecron Medizinische Produkte Gmbh Supporting element for an artificial hip socket which can be screwed into the bone
EP0065482A2 (en) * 1981-05-18 1982-11-24 Mecron Medizinische Produkte Gmbh Artificial hip socket
US4795470A (en) * 1981-05-18 1989-01-03 Volkmar Goymann Two-part socket for hip-joint prosthesis
US4770661A (en) * 1982-01-18 1988-09-13 Indong Oh Conversion femoral endoprosthesis
EP0091315A1 (en) * 1982-04-07 1983-10-12 National Research Development Corporation Endoprosthetic bone joint devices
US6520995B2 (en) 1982-04-07 2003-02-18 Btg International Limited Endoprosthetic bone joint devices
US6352559B1 (en) 1982-04-07 2002-03-05 Btg International Limited Endoprosthetic bone joint devices
DE3310486A1 (en) * 1982-04-10 1984-10-04 Günther Dr.med. 7400 Tübingen Aldinger Endoprosthesis with a profiled anchorage stem
US4846839A (en) * 1984-02-09 1989-07-11 Joint Medical Products Corporation Apparatus for affixing a prosthesis to bone
DE3426947A1 (en) * 1984-06-07 1985-12-12 Harry Prof. Dr.med. 1000 Berlin Buse Self-adhesive, cementless implantable hip implant
US4659067A (en) * 1984-09-10 1987-04-21 Fournier Jacques A Implant for coxofemoral prosthesis
DE3701198A1 (en) * 1987-01-15 1988-07-28 Buse Harry HIPSTER IMPLANT
DE8810783U1 (en) * 1988-06-06 1988-10-20 Mecron Medizinische Produkte Gmbh, 1000 Berlin, De
US4963154A (en) * 1988-06-06 1990-10-16 Mecron Medizinische Produkte Gmbh Acetabular cup as part of a hip joint prosthesis
US5725594A (en) * 1994-07-14 1998-03-10 Ortho Development Corporation Proximal conical stem
US6332896B1 (en) 1994-07-14 2001-12-25 Ortho Development Corporation Orthopaedic implant with proximal collar
US6913624B2 (en) 1994-07-14 2005-07-05 Ortho Development Corporation Orthopaedic implant with proximal collar

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TR20171A (en) 1980-09-29
RO85055B (en) 1985-04-01
SU980709A1 (en) 1982-12-15
IT7851238A0 (en) 1978-09-26
CH636261A5 (en) 1983-05-31
PL209835A1 (en) 1979-07-16
CS223355B1 (en) 1983-10-28
DD236853A3 (en) 1986-06-25
BG27580A1 (en) 1979-12-12
GR66558B (en) 1981-03-27
FR2419717A1 (en) 1979-10-12
JPS54127195A (en) 1979-10-02
GB2029229A (en) 1980-03-19
RO85055A (en) 1985-03-15
GB2029229B (en) 1982-12-22
YU218678A (en) 1982-06-30

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