DE8127991U1 - Cementless total hip replacement - Google Patents

Cementless total hip replacement

Info

Publication number
DE8127991U1
DE8127991U1 DE8127991U DE8127991DU DE8127991U1 DE 8127991 U1 DE8127991 U1 DE 8127991U1 DE 8127991 U DE8127991 U DE 8127991U DE 8127991D U DE8127991D U DE 8127991DU DE 8127991 U1 DE8127991 U1 DE 8127991U1
Authority
DE
Germany
Prior art keywords
prosthesis
total hip
cementless
shaft
hip replacement
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.)
Expired
Application number
DE8127991U
Other languages
German (de)
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.)
KUENNE HERMANN DR MED 4783 ERWITTE DE
Original Assignee
KUENNE HERMANN DR MED 4783 ERWITTE DE
Publication date
Publication of DE8127991U1 publication Critical patent/DE8127991U1/en
Expired 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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1659—Surgical rasps, files, planes, or scrapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
    • A61B17/1668—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper femur
    • 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
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3676—Distal or diaphyseal 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
    • 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
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • 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
    • 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

Description

Zementfreie Hüft-Totalendoprothese nach Dr. KünneCementless total hip prosthesis according to Dr. Künne

Zweck einer neuen zementfrei implantierbaren Totalendoprothese des Hüftgelenkes ist die Vermeidung der bisher bei Prothesen dieser Art aufgetretenen Mangel. Nachteile ergaben sich bei den bisherigen Modellen durch die Verwendung eines sogenannten Kragens am oberen Prothesenschaftrand sowie durch physiologisch ungünstige Oberflächengestaltung, der dem Wachstum des Knochens, der sich dem Druck entgegen richtet, zu wenig Rechnung trägt.Purpose of a new cementless implantable total endoprosthesis of the hip joint is the avoidance of the deficiency that has hitherto occurred in prostheses of this type. Disadvantages resulted from the use of a so-called collar on the previous models upper edge of the prosthesis socket as well as through physiological unfavorable surface design, too little for the growth of the bone, which is directed against the pressure Takes into account.

Bezüglich der Form wird auf die anliegenden Zeichnungen verwiesen, die den Prothesenschaft in zwei Ebenen mit Maßangaben darstellt.Regarding the shape, reference is made to the attached drawings, which show the prosthesis socket in two planes Represents dimensions.

Die ausgeprägte Keilform des neu entwickelten Prothesenschaftes soll ein besseres Einklemmen der Prothese in den Oberschenkelschaft ermöglichen als es bei den bisherigen Modellen der Fall ist. Insbesondere führt die Verbreiterung im oberen Bereich der Prothese auch zu einer besseren Ausfüllung des hier wesentlich erweiterten Markraumes. Der physiologischen Form des huftgelanksnahen Oberschenkelknochens entsprechend wurde die gewählte Keilform durch Verbreiterung auf der einen und Verschmälerung auf der anderen Seite verändert. Dies hat zur Folge, daß jeweils für uie linke und für die rechte Seite ein entsprechendes Modell gewählt werden muß, wobei die in der Zeichnung dargestellte Form für Operationen am linken Hüftgelenk vorgesehen ist.The pronounced wedge shape of the newly developed prosthesis shaft is intended to facilitate clamping of the prosthesis in enable the thigh shaft than is the case with previous models. In particular, the widening in the upper area of the prosthesis also leads to a better filling of this area significantly enlarged medullary canal. The physiological shape of the femur near the hip gelatin accordingly, the chosen wedge shape was made by widening on one side and narrowing on the other other side changed. As a result, there is a corresponding one for the left and one for the right side Model must be selected, the shape shown in the drawing for operations on the left hip joint is provided.

It« O ■It «O ■

Die Neukonstruktion dient der Lösung der bisher aufgetretenen Probleme der festen Verbindung der Prothese mit dem umgebenden Knochen.The new design serves to solve the previously encountered problems of the fixed connection of the Prosthesis with the surrounding bone.

Bei den auf dem Markt befindlichen Modellen verhindert der vorliegende Kragen ein weiteres Einsinken des primär nicht ausreichend fest eingetriebenen Prothesenschaftes und somit auch den knöchernen Einbau.In the models on the market, the present collar prevents further sinking of the Primarily insufficiently firmly driven prosthesis shaft and thus also the bony installation.

Die gesamte Oberfläche des Prothesenschaftes einschließlich des Flügels weist eine wesentliche Oberflächenvergrößerung durch Anbringung sogenannter Raspelhiebe auf. Diese werden dicht aneinandergefügt in einem Abstand von etwa 2 bis 3 πιπί. Geringfügige Variationen sind unerheblich.The entire surface of the prosthesis shaft including the wing shows a substantial increase in surface area by attaching so-called rasp cuts. These are tightly joined together at a distance of about 2 to 3 πιπί. Minor Variations are insignificant.

Es handelt sich bei diesen Raspelhieben um Vertiefungen in Form einer dreikantigen Pyramide und entsprechende Erhöhungen der Oberfläche in gleicher Form. Vertiefungen wie Erhöhungen sollen die angegebenen Kerndurchmesser um je etwa 1 mm überragen und möglichst scharfkantig begrenzt sein. Die entstehenden horizontalen Flächen sind nach unten gerichtet, um in ihrer Gesamtheit eine gute Auflagefläche für den eingewachsenen Knochen zu ergeben.These rasp cuts are depressions in the form of a triangular pyramid and corresponding ones Elevations of the surface in the same form. Depressions as well as elevations should be the specified Exceed core diameter by about 1 mm each and be as sharp-edged as possible. The resulting horizontal Surfaces are directed downwards in order to provide a good support surface for the ingrown bone as a whole to surrender.

Bezüglich dieser Oberflächengestaltung darf sicherlich ausnahmsweise auch auf die bereits eingesandten Fotografien verwiesen werden.Regarding this surface design, certainly Exceptionally, reference can also be made to the photographs that have already been submitted.

Die hier vorliegende Raspelform der Prothesenoberfläche wurde aus den folgenden Gründen wohl erstmals für die Oberflächengestaltung einer Hüft-Totalendoprothese gewählt:The rasp shape of the prosthesis surface presented here was probably the first for the following reasons Surface design of a total hip prosthesis chosen:

Beim Eintreiben des Schaftes kommt es zur Auffüllung der Einkerbungen mit spongiösem Knochen. Dieser KnochenWhen the shaft is driven in, the notches are filled with cancellous bone. That bone

(cc ■ I(cc ■ I

wird dann beim weiteren Eintreiben mit der Prothese transportiert und am endgültigen Platz fest der inneren Corticalis des Oberschenkels angelagert. Durch die dann erfolgenden physiologischen Umbauvorgänge kommt es zur Verbindung der Spongiosa mit der umgebenden Corticalis, so daß eine sichere Fixation des Prothesenschaftes gewährleistet ist.is then transported with the prosthesis during further driving and is fixed in its final place attached to the inner cortex of the thigh. Through the physiological remodeling processes that then take place it comes to the connection of the cancellous bone with the surrounding corticalis, so that a safe Fixation of the prosthesis shaft is guaranteed.

Der Pfannenteil der Prothese entspricht in der zylindrischen Form und den Ausmaßen der auf dem Markt befindlichen Totalendoprothese nach Professor Robert Judet, so daß .hier keine schutzfähigen Merkmale - abgesehen von der auch hier erfolgten Oberflächenveränderung, die der des Prothesenschaftes entspricht - bestehen.The socket part of the prosthesis has the same cylindrical shape and dimensions as those on the market Total endoprosthesis located according to Professor Robert Judet, so that there are no features that can be protected here - apart from of the surface change that has also taken place here, which corresponds to that of the prosthesis shaft.

Weiterhin entsprechen Konus, Kopfkugel und die in dem Pfannenzylinder anzubringende Polyäthylenschale mehreren auf dem Markt befindlichen Modellen und sind somit nicht schutzfähig.Furthermore, the cone, head ball and those in the correspond to Pan cylinder to be attached polyethylene shell several models on the market and are therefore not eligible for protection.

Λ. i. /2Λ. i. / 2

-€_- € _

Claims (2)

• · t ir «a t« 4 « • fa · * « «re· • * * · t t iti ·· · Betr.:"Zementfreie Hüft-Totalendoprothese " Akz. G 81 27 991.4 - Schutzansprüche• · t ir «a t« 4 «• fa · *« «re · • * * · t t iti ·· · Betr.:" Cementless total hip prosthesis "Akz. G 81 27 991.4 - claims for protection 1.) Zementfreie Hüft-Totalendoprothese, dadurch gekennzeichnet, daß der Prothesenschaft in Keilform variiert, entweder für den linken oder rechten menschlichen Oberschenkelsehaft ausgebildet ist.1.) Cementless total hip prosthesis, characterized in that the prosthesis shaft varies in wedge shape, either for formed the left or right human femoral shaft is. 2.) Zementfreie Hüft-Totalendoprothese nach Anspruch 1, dadurch gekennzeichnet, daß die gesamte Oberfläche des Prothesenschaftes einschließlich des Klügeis eine wesentliche Oberflächenvergrößerung durch Anbringung sogenannter Raspelhiebe aufweist, wobei dieselben direkt aneinandergefügt in änem Abstand von etwa 2 - 3 mm angebracht sind.2.) Z e ment-free total hip endoprosthesis according to claim 1, characterized in that the entire surface of the prosthesis shaft including the Klugeis has a substantial increase in surface area by attaching so-called rasps, which are attached directly to one another at a distance of about 2-3 mm.
DE8127991U Cementless total hip replacement Expired DE8127991U1 (en)

Publications (1)

Publication Number Publication Date
DE8127991U1 true DE8127991U1 (en) 1982-09-02

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Family Applications (1)

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DE8127991U Expired DE8127991U1 (en) Cementless total hip replacement

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DE (1) DE8127991U1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159510A2 (en) * 1984-04-14 1985-10-30 HOWMEDICA INTERNATIONAL, INC. Zweigniederlassung Kiel Hip joint endoprosthesis
EP0162604A1 (en) * 1984-04-25 1985-11-27 Minnesota Mining And Manufacturing Company Implant with attachment surface
US4673409A (en) * 1984-04-25 1987-06-16 Minnesota Mining And Manufacturing Company Implant with attachment surface
EP0238860A2 (en) * 1984-03-23 1987-09-30 orthoplant Endoprothetik GmbH Femoral part of a endoprosthesis for a hip joint
EP0390768A1 (en) * 1989-03-16 1990-10-03 BÖHLER Gesellschaft m.b.H. Bone implant
DE4437479A1 (en) * 1994-10-20 1996-05-02 Volker Prof Dr Echtermeyer Endoprosthesis for hip or knee joint

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0238860A2 (en) * 1984-03-23 1987-09-30 orthoplant Endoprothetik GmbH Femoral part of a endoprosthesis for a hip joint
EP0238860A3 (en) * 1984-03-23 1988-03-30 Orthoplant Endoprothetik Gmbh Femoral part of a endoprosthesis for a hip joint
EP0159510A2 (en) * 1984-04-14 1985-10-30 HOWMEDICA INTERNATIONAL, INC. Zweigniederlassung Kiel Hip joint endoprosthesis
EP0159510A3 (en) * 1984-04-14 1987-03-04 Howmedica International, Inc. Zweigniederlassung Kiel Hip joint endoprosthesis
EP0162604A1 (en) * 1984-04-25 1985-11-27 Minnesota Mining And Manufacturing Company Implant with attachment surface
US4608052A (en) * 1984-04-25 1986-08-26 Minnesota Mining And Manufacturing Company Implant with attachment surface
US4673409A (en) * 1984-04-25 1987-06-16 Minnesota Mining And Manufacturing Company Implant with attachment surface
EP0390768A1 (en) * 1989-03-16 1990-10-03 BÖHLER Gesellschaft m.b.H. Bone implant
DE4437479A1 (en) * 1994-10-20 1996-05-02 Volker Prof Dr Echtermeyer Endoprosthesis for hip or knee joint

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