FR2651996A3 - Cemented prosthesis cup - Google Patents

Cemented prosthesis cup Download PDF

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Publication number
FR2651996A3
FR2651996A3 FR8912618A FR8912618A FR2651996A3 FR 2651996 A3 FR2651996 A3 FR 2651996A3 FR 8912618 A FR8912618 A FR 8912618A FR 8912618 A FR8912618 A FR 8912618A FR 2651996 A3 FR2651996 A3 FR 2651996A3
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France
Prior art keywords
cup
intended
cement
studs
prosthesis
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Granted
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FR8912618A
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French (fr)
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FR2651996B3 (en
Inventor
Augoyard Marc
Bertocchi Rene
Courcelles Philippe
Crouzet Marc
Noyer Daniel
Peyrot Jacques
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Individual
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Individual
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Priority to FR8912618A priority Critical patent/FR2651996B3/en
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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
    • A61F2/34—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
    • A61F2/30721—Accessories
    • A61F2/30724—Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving 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
    • 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
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30158—Convex polygonal shapes trapezoidal
    • 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
    • A61F2002/30359—Pyramidally- or frustopyramidally-shaped protrusion and recess
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • 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
    • A61F2002/30891—Plurality of protrusions
    • A61F2002/30894—Plurality of protrusions inclined obliquely with respect to each other
    • 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
    • A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • 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
    • A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • A61F2002/3414—Polar protrusion, e.g. for centering two concentric shells
    • 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
    • A61F2002/3443—Acetabular cups with an anti-luxation elevated rim portion, e.g. on the inner shell
    • 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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
    • A61F2230/0017—Angular shapes
    • A61F2230/0026—Angular shapes trapezoidal

Abstract

Prosthesis cup (1) intended to be fixed by means of cement, characterised in that the outer surface (2) of this cup (1) comprises a plurality of openings (3, 5-10) which are intended to receive studs (11-13) which are directed outwards, are made of biocompatible plastic material and are capable of adhering to the fixing cement.

Description

L'invention concerne un nouveau type de cupule de prothèse cimentée, notamment de prothèse de hanche. The invention relates to a new type of cemented prosthesis cup, in particular hip prosthesis.

Comme on le sait, une cupule de prothèse est destinée sur sa face interne à recevoir un noyau dans lequel vient se loger la tête du col prothétique et dont la face externe est solidaire de l'os de l'articulation à renforcer, tel que par exemple le cotyle de la hanche. Cette solidarisation peut être obtenue de différentes façons, mais le plus généralement par vissage ou au moyen d'un ciment. As is known, a prosthesis cup is intended on its internal face to receive a core in which is housed the head of the prosthetic neck and the external face of which is secured to the bone of the joint to be reinforced, such as by example the hip acetabulum. This joining can be obtained in different ways, but most generally by screwing or by means of a cement.

Dans les cupules de prothèse cimentées, on met d'abord dans ltos préparé le ciment qui se présente généralement sous forme d'une résine synthétique, puis on applique la cupule à insérer. Du fait de cette insertion, et des manoeuvres nécessaires pour la mise en place de la cupule, la répartition du ciment n'est pas toujours homogène. A la longue, il s'ensuit de nombreux inconvénients. In the cemented prosthesis cups, the cement, which generally takes the form of a synthetic resin, is first placed in ltos prepared, then the cup to be inserted is applied. Due to this insertion, and the maneuvers necessary for the establishment of the cup, the distribution of the cement is not always homogeneous. In the long run, many disadvantages ensue.

L'invention pallie ces inconvénients. La cupule de prothèse selon l'invention, destinée à être fixée au moyen d'un ciment, se caractérise en ce que la surface externe de la cupule présente une pluralité d'orifices destinés à recevoir des plots dirgés vers l'extérieur, en matière plastique biocompatible et susceptibles d'adhérer au ciment de fixation.  The invention overcomes these drawbacks. The prosthesis cup according to the invention, intended to be fixed by means of a cement, is characterized in that the external surface of the cup has a plurality of orifices intended to receive studs directed outwards, in material biocompatible plastic and likely to adhere to the fixing cement.

En d'autres termes, l'invention consiste à disposer à la périphérie externe de la cupule des plots de matière plastique susceptibles de se fondre avec le ciment et donc, par conséquence, de favoriser par voie physicochimique une adhésion ferme entre le ciment et la cupule. In other words, the invention consists in placing at the outer periphery of the cup plots of plastic material capable of melting with the cement and therefore, consequently, of promoting, by physicochemical means, a firm adhesion between the cement and the cup.

Avantageusement, en pratique
- le ciment de fixation et les plots sont réalisés dans la même matière plastique, notamment en polymétacrylate de méthyle
- de manière connue, la cupule a une forme hémisphérique et comporte un plot au pôle et une pluralité de plots régulièrement répartis sur un même cercle parallèle à l'équateur
- les plots présentent en coupe une forme générale tronconique ou pyramidale, destinés à être insérés dans les orifices de la cupule, raccordée à son tour à une portion cylindrique ou parallélépipédique destinée à dépasser de la surface de la cupule et à se fondre dans le ciment
- de manière connue, la cupule est associée par sa face interne à un noyau de faible coefficient de frottement destiné à coopérer avec la tête du col prothétique de la prothèse ; ce noyau dépasse de la cupule sur un côté, et la face dépassante est biseautée pour former butée anti-luxation. Advantageously, in practice
- the fixing cement and the studs are made of the same plastic material, in particular polymethyl methacrylate
- in known manner, the cup has a hemispherical shape and has a stud at the pole and a plurality of studs regularly distributed on the same circle parallel to the equator
- the studs have in section a generally frustoconical or pyramidal shape, intended to be inserted in the orifices of the cup, in turn connected to a cylindrical or parallelepiped portion intended to protrude from the surface of the cup and to merge in the cement
- In known manner, the cup is associated by its internal face with a core of low coefficient of friction intended to cooperate with the head of the prosthetic neck of the prosthesis; this core protrudes from the cup on one side, and the projecting face is bevelled to form an anti-dislocation stop.

La manière dont l'invention peut être réalisée et les avantages qui en découlent ressortiront mieux de l'exemple de réalisation qui suit, donné à titre indicatif et non limitatif à l'appui des figures annexées. The manner in which the invention can be implemented and the advantages which result therefrom will emerge more clearly from the example of embodiment which follows, given by way of indication and without limitation in support of the appended figures.

La figure 1 est une représentation en coupe sommaire d'une cupule conforme à l'invention. Figure 1 is a summary sectional representation of a cup according to the invention.

La figure 2 est une vue de dessus de cette cupule. Figure 2 is a top view of this cup.

La figure 3 est une vue en coupe sommaire d'un plot caractéristique de l'invention inséré dans la cupule. Figure 3 is a summary sectional view of a characteristic pad of the invention inserted in the cup.

Selon l'invention, la cupule désignée par la référence générale (1) présente à sa surface externe (2) une pluralité d'orifices disposés respectivement l'un au pôle (3), les autres régulièrement répartis sur un cercle non tracé parallèle à l'équateur (4), respectivement (5,6,7,8,9,10). Ces orifices peuvent être de formes variées, polygonale ou circulaire. On utilise de préférence une forme polygonale, avantageusement de section carrée pour assurer une parfaite mise en place des plots caractéristiques. According to the invention, the cup designated by the general reference (1) has on its external surface (2) a plurality of orifices respectively arranged one at the pole (3), the others regularly distributed over an undrawn circle parallel to the equator (4), respectively (5,6,7,8,9,10). These orifices can be of various shapes, polygonal or circular. It is preferable to use a polygonal shape, advantageously of square section to ensure perfect positioning of the characteristic studs.

Chaque orifice (5-10) reçoit un plot respectivement (11,12,13) en matière plastique biocompatible, présentant à sa base (voir figure 3) une première portion pyramidale (14) destinée à être insérée dans l'orifice (6) de la cupule (1), raccordée à une portion cylindrique (15) dépassante. Dans une forme de réalisation avantageuse, ces plots (11,13) ont une section carrée dont les côtés ont une longueur comprise entre quatre et six millimètres et de la portion cylindrique dépassante (15) à une hauteur de deux à quatre millimètres. Comme le plus généralement, les ciments de fixation sont à base de résine polymétacrylate de méthyle (PMMA), les plots (11,12,13) sont également dans la même matière. Comme on le voit sur la figure 2, ces plots sont au nombre de sept et sont régulièrement répartis et équidistants. Each orifice (5-10) receives a pad respectively (11,12,13) made of biocompatible plastic material, having at its base (see FIG. 3) a first pyramidal portion (14) intended to be inserted in the orifice (6) of the cup (1), connected to a projecting cylindrical portion (15). In an advantageous embodiment, these studs (11,13) have a square section whose sides have a length of between four and six millimeters and of the protruding cylindrical portion (15) at a height of two to four millimeters. As most generally, the fixing cements are based on polymethyl methacrylate resin (PMMA), the studs (11,12,13) are also in the same material. As can be seen in FIG. 2, these studs are seven in number and are regularly distributed and equidistant.

La face interne (16) de la cupule (1) reçoit de manière connue un noyau (17) en matière plastique de faible coefficient de frottement, par exemple en polyéthylène basse densité, dont la face interne (18) a une forme hémisphérique, de manière à coopérer avec la tête non représentée, du col prothétique de la prothèse. La solidarisation de ce noyau (17) avec la cupule (1) s'effectue par tout moyen approprié, tel que vissage ou encore mieux en jouant sur les coefficients de dilatation respectifs. The internal face (16) of the cup (1) receives in a known manner a core (17) of plastic material of low friction coefficient, for example of low density polyethylene, the internal face (18) of which is hemispherical, so as to cooperate with the head, not shown, of the prosthetic neck of the prosthesis. The attachment of this core (17) with the cup (1) is carried out by any suitable means, such as screwing or even better by playing on the respective expansion coefficients.

Dans une variante avantageuse (voir figure 1), le noyau (17) est décalé d'un angle a d'environ 10 à 25 , de préférence 15 degrés, par rapport au centre de la cupule, de manière à déborder de celle-ci. La face dépassante (19) de la cupule est alors biseautée pour former butée anti-luxation. In an advantageous variant (see FIG. 1), the core (17) is offset by an angle a of about 10 to 25, preferably 15 degrees, relative to the center of the cup, so as to project from it . The projecting face (19) of the cup is then bevelled to form an anti-dislocation stop.

La mise en place de la cupule selon l'invention s'effectue de la manière suivante. The establishment of the cup according to the invention is carried out as follows.

De manière connue, le chirurgien fraise le cotyle, par exemple d'une taille de 50 millimètres de diamètre. In known manner, the surgeon mills the acetabulum, for example of a size of 50 millimeters in diameter.

Il met ensuite dans la cavité ainsi taillée un ciment classique à base de PMMA additionné de ses adjuvants usuels, tels que solvants, stabilisants, catalyseurs, etc. . Il dépose alors sur ce ciment une cupule (1) en titane conforme à l'invention, de diamètre (4) voisin de 46 millimètres et dont les plots caractéristiques (11,13) également en PMMA dépassent de 2 millimètres. Le chirurgien pousse alors fortement la cupule (1) au fond de la cavité en agissant dans la direction de l'axe de symétrie de l'ensemble. Progressivement, à température ambiante, la partie dépassante (15) des plots (11,13) se dissout et se fond dans le ciment, ce qui assure ainsi une prise parfaite.He then puts in the cavity thus cut a conventional cement based on PMMA added with its usual adjuvants, such as solvents, stabilizers, catalysts, etc. . He then deposits on this cement a titanium cup (1) according to the invention, of diameter (4) close to 46 millimeters and whose characteristic pads (11,13) also in PMMA exceed 2 millimeters. The surgeon then strongly pushes the cup (1) at the bottom of the cavity by acting in the direction of the axis of symmetry of the assembly. Gradually, at room temperature, the protruding part (15) of the studs (11,13) dissolves and melts in the cement, which thus ensures perfect setting.

La cupule caractéristique de l'invention présente de nombreux avantages par rapport à celles commercialisées à ce jour. On peut citer
- sa simplicité de construction et de mise en place
- une répartition homogène du ciment, donc un bon soutien en cours de porter.The characteristic cup of the invention has many advantages compared to those marketed to date. We can cite
- its simplicity of construction and installation
- a homogeneous distribution of the cement, therefore good support during wear.

De la sorte, ces cupules peuvent être utilisées avec succès comme cupule cotyloïdienne cimentée d'une prothèse de hanche.  In this way, these cups can be used successfully as an acetabular cup cemented with a hip prosthesis.

Claims (6)

REVENDICATIONS 1/ Cupule de prothèse (1) destinée à être fixée au moyen d'un ciment, caractérisée en ce que la surface externe (2) de cette cupule (1) comporte une pluralité d'orifices (3,5-10), destinés à recevoir des plots (1113) dirigés vers l'extérieur, en matière plastique biocompatible, et susceptibles d'adhérer au ciment de fixation. 1 / Prosthesis cup (1) intended to be fixed by means of a cement, characterized in that the external surface (2) of this cup (1) has a plurality of orifices (3.5-10), intended to receive studs (1113) directed outwards, of biocompatible plastic material, and capable of adhering to the fixing cement. 2/ Cupule de prothèse selon la revendication 1, caractérisée en ce que le ciment de fixation et les plots (11-13) sont réalisés dans la même matière plastique. 2 / prosthesis cup according to claim 1, characterized in that the fixing cement and the studs (11-13) are made of the same plastic. 3/ Cupule de prothèse selon la revendication 1, caractérisée en ce que le ciment de fixation et les plots (11,13) sont en polymétacrylate de méthyle. 3 / prosthesis cup according to claim 1, characterized in that the fixing cement and the studs (11,13) are made of polymethyl methacrylate. 4/ Cupule de prothèse (1) selon lune des revendications 1 à 3, du type ayant une forme hémisphérique, caractérisée en ce qu'elle présente un plot (11) au pôle et une pluralité de plots (12,13) régulièrement répartis sur un même cercle parallèle à l'équateur (4). 4 / prosthesis cup (1) according to one of claims 1 to 3, of the type having a hemispherical shape, characterized in that it has a stud (11) at the pole and a plurality of studs (12,13) regularly distributed over the same circle parallel to the equator (4). 5/ Cupule de protection selon l'une des revendications 1 à 4, caractérisée en ce que les plots (11-13) présentent en coupe longitudinale une forme générale légèrement tronconique (14) destinée à être insérée dans les orifices (3,5-10), raccordée à une portion cylindrique (15) destinée à dépasser de la surface (2) de la cupule (1) et à se fondre dans le ciment.  5 / protective cup according to one of claims 1 to 4, characterized in that the studs (11-13) have in longitudinal section a generally slightly frustoconical shape (14) intended to be inserted in the orifices (3,5- 10), connected to a cylindrical portion (15) intended to protrude from the surface (2) of the cup (1) and to melt in the cement. 6/ Cupule de prothèse selon l'une des revendications 1 à 5, dans laquelle ladite cupule (1) est associée, par sa face interne (16), à un noyau (17) de faible coefficient de frottement, destiné à coopérer avec la tête du col prothétique de la prothèse, caractérisée en ce que le noyau (17) dépasse de la cupule (1) sur un côté et en ce que la face dépassante (19) de ce noyau est biseautée pour former butée anti-luxation.  6 / prosthesis cup according to one of claims 1 to 5, wherein said cup (1) is associated, by its internal face (16), with a core (17) of low coefficient of friction, intended to cooperate with the head of the prosthetic neck of the prosthesis, characterized in that the core (17) protrudes from the cup (1) on one side and in that the projecting face (19) of this core is bevelled to form an anti-dislocation stop.
FR8912618A 1989-09-21 1989-09-21 CEMENTED PROSTHESIS CUP. Expired - Lifetime FR2651996B3 (en)

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FR2651996B3 FR2651996B3 (en) 1991-08-09

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Cited By (16)

* Cited by examiner, † Cited by third party
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NL9200070A (en) * 1992-01-15 1993-08-02 Orthopaedic Tech Bv JOINT PROSTHESIS.
US5310408A (en) * 1991-02-14 1994-05-10 Smith & Nephew Richards Inc. Acetabular cup body prosthesis
FR2707479A1 (en) * 1993-07-02 1995-01-20 Fii Device for fixing a prosthetic implant in a bone cavity using cement
EP0699425A1 (en) * 1994-09-01 1996-03-06 SULZER Medizinaltechnik AG Artificial hip joint acetabular cup as well as manufacturing process
DE29614342U1 (en) * 1996-08-19 1996-10-02 Keramed Medizintechnik Gmbh Artificial acetabular cup
US5725580A (en) * 1994-12-16 1998-03-10 Exactech, Inc. Hole caps for prosthetic implants
FR2775586A1 (en) * 1998-03-03 1999-09-10 Tornier Sa MODULAR ACETABULAR OR COTYLOIDAL IMPLANT
DE19926816A1 (en) * 1999-06-12 2001-02-22 Aesculap Ag & Co Kg Joint socket for prostheses comprises a bone element fixed in a bone layer with an intermediate space and a distance ring
US6413259B1 (en) 2000-12-14 2002-07-02 Blackstone Medical, Inc Bone plate assembly including a screw retaining member
FR2918553A1 (en) * 2007-07-11 2009-01-16 Chirurgicale D Aide A La Rech Hip prosthesis implanting system, has transmitting unit transmitting force along given direction to element, such that element is subjected to translation along given direction, when element is cooperated with cotyloid cavity
US7951151B2 (en) 2006-02-21 2011-05-31 Life Spine, Inc. Structure for joining and retaining multi-part orthopedic implants
US8182518B2 (en) 2003-12-22 2012-05-22 Life Spine, Inc. Static and dynamic cervical plates and cervical plate constructs
US8348949B2 (en) 2008-08-29 2013-01-08 Life Spine, Inc. Single-sided dynamic spine plates
US9649198B2 (en) 2011-04-29 2017-05-16 Life Spine, Inc. Spinal interbody implant with bone screw retention
US9877759B2 (en) 2014-02-06 2018-01-30 Life Spine, Inc. Foot implant for bone fixation
US9889014B2 (en) 2014-02-06 2018-02-13 Life Spine, Inc. Implant for bone fixation

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US7001389B1 (en) 2002-07-05 2006-02-21 Navarro Richard R Fixed and variable locking fixation assembly

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Publication number Priority date Publication date Assignee Title
US5310408A (en) * 1991-02-14 1994-05-10 Smith & Nephew Richards Inc. Acetabular cup body prosthesis
US5314487A (en) * 1991-02-14 1994-05-24 Smith & Nephew Richards Inc. Acetabular prosthesis with anchoring pegs
NL9200070A (en) * 1992-01-15 1993-08-02 Orthopaedic Tech Bv JOINT PROSTHESIS.
FR2707479A1 (en) * 1993-07-02 1995-01-20 Fii Device for fixing a prosthetic implant in a bone cavity using cement
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EP0699425A1 (en) * 1994-09-01 1996-03-06 SULZER Medizinaltechnik AG Artificial hip joint acetabular cup as well as manufacturing process
US5725580A (en) * 1994-12-16 1998-03-10 Exactech, Inc. Hole caps for prosthetic implants
DE29614342U1 (en) * 1996-08-19 1996-10-02 Keramed Medizintechnik Gmbh Artificial acetabular cup
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FR2775586A1 (en) * 1998-03-03 1999-09-10 Tornier Sa MODULAR ACETABULAR OR COTYLOIDAL IMPLANT
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DE19926816A1 (en) * 1999-06-12 2001-02-22 Aesculap Ag & Co Kg Joint socket for prostheses comprises a bone element fixed in a bone layer with an intermediate space and a distance ring
DE19926816C2 (en) * 1999-06-12 2001-06-13 Aesculap Ag & Co Kg Joint socket
US6413259B1 (en) 2000-12-14 2002-07-02 Blackstone Medical, Inc Bone plate assembly including a screw retaining member
US8182518B2 (en) 2003-12-22 2012-05-22 Life Spine, Inc. Static and dynamic cervical plates and cervical plate constructs
US7951151B2 (en) 2006-02-21 2011-05-31 Life Spine, Inc. Structure for joining and retaining multi-part orthopedic implants
FR2918553A1 (en) * 2007-07-11 2009-01-16 Chirurgicale D Aide A La Rech Hip prosthesis implanting system, has transmitting unit transmitting force along given direction to element, such that element is subjected to translation along given direction, when element is cooperated with cotyloid cavity
US8348949B2 (en) 2008-08-29 2013-01-08 Life Spine, Inc. Single-sided dynamic spine plates
US9649198B2 (en) 2011-04-29 2017-05-16 Life Spine, Inc. Spinal interbody implant with bone screw retention
USD789839S1 (en) 2011-04-29 2017-06-20 Life Spine, Inc. Screw retention for interbody implant
US9877759B2 (en) 2014-02-06 2018-01-30 Life Spine, Inc. Foot implant for bone fixation
US9889014B2 (en) 2014-02-06 2018-02-13 Life Spine, Inc. Implant for bone fixation
US10117750B2 (en) 2014-02-06 2018-11-06 Life Spine, Inc. Implant for bone fixation
US10117691B2 (en) 2014-02-06 2018-11-06 Life Spine, Inc. Implant for bone fixation
USD855184S1 (en) 2014-02-06 2019-07-30 Life Spine, Inc. Implant for bone fixation
USD857201S1 (en) 2015-02-06 2019-08-20 Life Spine, Inc. Implant for bone fixation

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