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
cement
characterized
intended
prosthesis
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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.)
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
Original Assignee
Augoyard Marc
Bertocchi Rene
Courcelles Philippe
Crouzet Marc
Noyer Daniel
Peyrot Jacques
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Application filed by Augoyard Marc, Bertocchi Rene, Courcelles Philippe, Crouzet Marc, Noyer Daniel, Peyrot Jacques filed Critical Augoyard Marc
Priority to FR8912618A priority Critical patent/FR2651996B3/en
Publication of FR2651996A3 publication Critical patent/FR2651996A3/en
Application granted granted Critical
Publication of FR2651996B3 publication Critical patent/FR2651996B3/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30721Accessories
    • A61F2/30724Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving cavity
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30138Convex polygonal shapes
    • A61F2002/30158Convex polygonal shapes trapezoidal
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The 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
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331Connections 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
    • A61F2002/30359Pyramidally- or frustopyramidally-shaped protrusion and recess
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878Special external or bone-contacting surfaces, 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
    • A61F2002/30891Plurality of protrusions
    • A61F2002/30894Plurality of protrusions inclined obliquely with respect to each other
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • A61F2002/3412Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • A61F2002/3412Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • A61F2002/3414Polar protrusion, e.g. for centering two concentric shells
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • A61F2002/3443Acetabular cups with an anti-luxation elevated rim portion, e.g. on the inner shell
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4631Special 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033Connections 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017Angular shapes
    • A61F2230/0026Angular 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. <IMAGE>

Description

L'invention concerne un nouveau type de cupule de prothèse cimentée, notamment de prothèse de hanche. A new type of cemented prosthesis cup, including hip replacement.

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. As is known, a prosthesis cup is designed on its inner face for receiving a ring in which is accommodated the head of the prosthetic neck, with the outer face is secured to the bone of the articulation to be reinforced, such as by example the acetabulum of the hip. Cette solidarisation peut être obtenue de différentes façons, mais le plus généralement par vissage ou au moyen d'un ciment. This fixing can be achieved in different ways, but most commonly 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. In wells cemented prosthesis, is first brought in ltos prepared cement which is generally in the form of a synthetic resin, then the cup is applied to insert. 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. Because of this integration, and maneuvers needed for the implementation of the cup, the distribution of cement is not always homogeneous. A la longue, il s'ensuit de nombreux inconvénients. In the long run, it follows many disadvantages.

L'invention pallie ces inconvénients. The invention overcomes these drawbacks. 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 prosthesis cup according to the invention, intended to be fixed by means of a cement, is characterized in that the outer surface of the cup has a plurality of holes for receiving studs Dirges outwardly in biocompatible plastic and may join the fixation 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 arranging at the outer periphery of the cup plastic pads could blend with the cement and thus, consequently, to promote through physicochemical firm adhesion between cement and cup.

Avantageusement, en pratique Advantageously, in practice
- le ciment de fixation et les plots sont réalisés dans la même matière plastique, notamment en polymétacrylate de méthyle - the fixing cement and the studs are made of the same plastic material, in particular polymethylmethacrylate
- 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 - in known manner, the cup has a hemispherical shape and comprises a stud and the hub a plurality of uniformly distributed pads on a circle parallel to the equator
- 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 - the pads sectional have a frustoconical or pyramidal overall shape, intended to be inserted in the orifices of the cup, in turn connected to a cylindrical or parallelepipedal portion intended to protrude from the surface of the cup and to blend in with the cement
- 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 ; - in known manner, the cup is associated by its inner face to a low coefficient of friction ring designed to cooperate with the head of the prosthetic neck of the prosthesis; ce noyau dépasse de la cupule sur un côté, et la face dépassante est biseautée pour former butée anti-luxation. which ring protrudes from the cup on one side, and the projecting face is bevelled to form anti-luxation 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 may be implemented and the advantages thereof will appear better from the exemplary embodiment which follows, given purely illustrative and non-limiting to the accompanying drawings.

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

La figure 2 est une vue de dessus de cette cupule. Figure 2 is a plan 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 rough sectional view of a typical pad of the invention inserted into 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). According to the invention, the cup designated by the general reference (1) has at its outer surface (2) a plurality of ports arranged respectively at one pole (3), other regularly distributed on a circle not drawn parallel to the equator (4), respectively (5,6,7,8,9,10). Ces orifices peuvent être de formes variées, polygonale ou circulaire. These openings may be of various shapes, polygonal or circular. On utilise de préférence une forme polygonale, avantageusement de section carrée pour assurer une parfaite mise en place des plots caractéristiques. a polygonal shape is preferably used, advantageously of square cross-section to ensure a perfect installation characteristics pads.

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. Each opening (5-10) is a pad, respectively (11,12,13) ​​of biocompatible plastics material, having at its base (see Figure 3) a first pyramid portion (14) intended to be inserted in the orifice (6) of the cup (1) connected to a cylindrical portion (15) projecting. 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. In a preferred embodiment, these studs (11,13) have a square section whose sides have a length between four and six millimeters and the projecting cylindrical portion (15) at a height of two to four millimeters. 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. As shown more generally, the fixing cements based on polymethyl methacrylate resin (PMMA), the pads (11,12,13) ​​are also of the same material. Comme on le voit sur la figure 2, ces plots sont au nombre de sept et sont régulièrement répartis et équidistants. As seen in Figure 2, these pads are seven in number and are evenly 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. The inner face (16) of the cup (1) receives in known manner a core (17) of plastics material of low friction coefficient, for example, low density polyethylene, the inner face (18) has a hemispherical shape, to cooperate with the head not shown, the prosthetic neck of the prosthesis. 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. Bonds said core (17) with the cup (1) is effected by any suitable means such as screwing or more preferably by varying 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. In an advantageous variant (see Figure 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 overflow thereof . La face dépassante (19) de la cupule est alors biseautée pour former butée anti-luxation. The projecting face (19) of the cup is then bevelled to form anti-luxation stop.

La mise en place de la cupule selon l'invention s'effectue de la manière suivante. The implementation 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 cup, for example 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. He then put into the cavity and cut a conventional cement PMMA-based supplemented with its customary auxiliaries, such as solvents, stabilizers, catalysts, 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. It then deposited on this cement a cup (1) made of titanium according to the invention, in diameter (4) close to 46 mm and whose characteristics pads (11,13) also PMMA exceed 2 millimeters. 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. The surgeon then pushes strongly the cup (1) at the bottom of the cavity by acting in the direction of the axis of symmetry of the assembly. 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. Gradually to room temperature, the projecting portion (15) of the studs (11,13) dissolves and merges with cement, thereby ensuring a perfect grip.

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

De la sorte, ces cupules peuvent être utilisées avec succès comme cupule cotyloïdienne cimentée d'une prothèse de hanche. Thus, these cups can be used successfully as a acetabular cup cemented 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 / cup prosthesis (1) intended to be fixed by means of a cement, characterized in that the outer surface (2) of the cup (1) has a plurality of orifices (3.5-10), for receiving pads (1113) directed outwards, biocompatible plastic, and may adhere 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 / cup prosthesis according to claim 1, characterized in that the fixing cement and the pads (11-13) are made of the same plastic material.
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 / cup prosthesis according to claim 1, characterized in that the fixing cement and the pads (11,13) are made of polymethylmethacrylate.
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 / cup prosthesis (1) as claimed in one of claims 1 to 3, of the type having a hemispherical shape, characterized in that it has a stud (11) to the pole and a plurality of studs (12,13) ​​regularly distributed over a 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 / well of protection according to one of claims 1 to 4, characterized in that the studs (11-13) have in longitudinal section a slightly frustoconical general shape (14) intended to be inserted into the holes (3,5 10), connected to a cylindrical portion (15) intended to protrude from the surface (2) of the cup (1) and to blend into 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 / well prosthesis according to one of claims 1 to 5, wherein said cup (1) is associated, via its internal face (16), 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) projects beyond the cup (1) on one side and in that the projecting face (19) of which ring is bevelled to form anti-luxation stop.
FR8912618A 1989-09-21 1989-09-21 Cup cemented prosthesis. Expired - Lifetime FR2651996B3 (en)

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FR2651996B3 FR2651996B3 (en) 1991-08-09

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Cited By (16)

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NL9200070A (en) * 1992-01-15 1993-08-02 Orthopaedic Tech Bv A 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 hip joint socket
US5725580A (en) * 1994-12-16 1998-03-10 Exactech, Inc. Hole caps for prosthetic implants
WO1999044545A1 (en) * 1998-03-03 1999-09-10 Tornier S.A. Modular acetabular or cotyloid 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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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
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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
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DE29614342U1 (en) * 1996-08-19 1996-10-02 Keramed Medizintechnik Gmbh Artificial hip joint socket
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US6413259B1 (en) 2000-12-14 2002-07-02 Blackstone Medical, Inc Bone plate assembly including a screw retaining member
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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
USD789839S1 (en) 2011-04-29 2017-06-20 Life Spine, Inc. Screw retention for interbody implant
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
US10117691B2 (en) 2014-02-06 2018-11-06 Life Spine, Inc. Implant for bone fixation
US10117750B2 (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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