FR2770769A1 - Acetabular cup prosthesis for hip surgery - Google Patents

Acetabular cup prosthesis for hip surgery Download PDF

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Publication number
FR2770769A1
FR2770769A1 FR9714021A FR9714021A FR2770769A1 FR 2770769 A1 FR2770769 A1 FR 2770769A1 FR 9714021 A FR9714021 A FR 9714021A FR 9714021 A FR9714021 A FR 9714021A FR 2770769 A1 FR2770769 A1 FR 2770769A1
Authority
FR
France
Prior art keywords
cup
teeth
internal
core
acetabular component
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.)
Granted
Application number
FR9714021A
Other languages
French (fr)
Other versions
FR2770769B1 (en
Inventor
Jean Claude Peyronny
Jean Claude Brunet
Patrick Chapuis
Christen Loic De
Marc Laine
Pierre Lelong
Philippe Massin
Emmanuel Michaut
Gilles Missenard
Christian Pages
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.)
ORTHOTECHNIQUE
Original Assignee
ORTHOTECHNIQUE
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 ORTHOTECHNIQUE filed Critical ORTHOTECHNIQUE
Priority to FR9714021A priority Critical patent/FR2770769B1/en
Publication of FR2770769A1 publication Critical patent/FR2770769A1/en
Application granted granted Critical
Publication of FR2770769B1 publication Critical patent/FR2770769B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
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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
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A—HUMAN NECESSITIES
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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
    • 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
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30322—The prosthesis having different structural features at different locations within the same prosthesis differing in surface structures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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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
    • A61F2/02—Prostheses implantable into the body
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    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30326—The prosthesis having different structural features at different locations within the same prosthesis differing in height or in length
    • A—HUMAN NECESSITIES
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    • 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
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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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    • 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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    • 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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    • 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
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/305—Snap connection
    • A—HUMAN NECESSITIES
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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
    • A61F2/02—Prostheses implantable into the body
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    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A61F2002/30607—Kits of prosthetic parts to be assembled in various combinations for forming different prostheses
    • A—HUMAN NECESSITIES
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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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    • A61F2002/30617—Visible markings for adjusting, locating or measuring
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Abstract

The cup assembly has a metal external cup (1) and an internal hub which may be fixed. The external cup defines a smooth surface with equatorial bisection. A crown (6) has a diameter greater than that of the cup, with multiple rows of teeth (7) extending towards the top of the cup.

Description

L'invention concerne un composant acétabulaire utilisé dans une prothèse totale de hanche. The invention relates to an acetabular component used in a total hip prosthesis.

Une prothèse totale de hanche est constituée de deux éléments : une tige fémorale implantée dans le fémur et terminée par une tête sphérique métallique et un composant acétabulaire implanté dans la cavité cotyloidienne de l'os iliaque, préalablement agrandie par fraisage, ce composant acétabulaire comportant notamment une cupule en une seule pièce, ou en deux pièces. A total hip prosthesis consists of two elements: a femoral stem implanted in the femur and terminated by a metallic spherical head and an acetabular component implanted in the acetabular cavity of the iliac bone, previously enlarged by milling, this acetabular component comprising in particular a cup in one piece, or in two pieces.

Lorsque la cupule est cn une seule pièce, clle est réalisée en une matière plastique biocompatible comme un polyéthylène à haute densité qui favorise le glissement. Cette cupule a tendance à flucr plus facilement là où le fond de cotyle est plus faible. When the cup is a single piece, it is made of a biocompatible plastic material such as high density polyethylene which promotes sliding. This cup tends to flow more easily where the cup bottom is weaker.

Les composants acétabulaires réalisés cn deux pièces comportent une cupule externe métallique et un noyau inteme en matière plastique qui loge à l'intérieur de la cupule métallique. La tête fémorale loge dans ce cas dans la cavité interne ménagée dans Ic noyau interne. Le noyau interne est en général monté de manière fixe à l'intérieur de la cupule métallique, mais il est déjà connu de le monter mobile dans la cavité interne de la cupule métallique qui, dans ce cas, comporte une portée interne sphérique. The acetabular components produced in two parts comprise an external metal cup and an internal plastic core which is housed inside the metal cup. The femoral head in this case lodges in the internal cavity formed in the internal nucleus. The internal core is generally fixedly mounted inside the metal cup, but it is already known to mount it mobile in the internal cavity of the metal cup which, in this case, has a spherical internal bearing.

FR 2 578 162, FR 2 689 000, FR 2 686 502 et FR 2 710 836 prévoient de fixer la cupule métallique au moyen de pattes radiales équipant la cupule et que l'on fixe sur l'os iliaque au moyen de vis. Dans FR 2 689 000, des vis traversent en outre des trous ménagés dans la paroi de la cupule et se fixent dans le fond de la cavité cotvloïdienne, ct FR 2 578 162 prévoit un plot de centrage sur la portée externe de la cupule qui loge dans l'alésage d'une bague préalablement positionnée dans Ic fond de la cavité cotyloldienne. Cette technique exige que les os dans lesquels sont ancrées les vis dc fixation des pattes soient de bonne qualité. FR 2 578 162, FR 2 689 000, FR 2 686 502 and FR 2 710 836 provide for fixing the metal cup by means of radial lugs fitted to the cup and which are fixed to the iliac bone by means of screws. In FR 2 689 000, screws also pass through holes in the wall of the cup and are fixed in the bottom of the cotvloid cavity, and FR 2 578 162 provides a centering stud on the external bearing of the cup which houses in the bore of a ring previously positioned in the bottom of the acetabular cavity. This technique requires that the bones in which the leg fixing screws are anchored are of good quality.

FR 2 686 791 ct FR 2 700 945 dévoilcnt des cupules métalliques qui ne comportent pas de pattes de fixation. FR 2 686 791 ct FR 2 700 945 reveals metal cups which do not have fixing lugs.

FR 2 700 945 prévoit que la cupule métallique comporte des gorges sur sa face externe et est fixée dans la cavité cotyloïdicnne au moyen d'un ciment durcissable. FR 2 700 945 provides that the metal cup has grooves on its external face and is fixed in the acetabular cavity by means of a hardenable cement.

FR 2 686 791, qui représente l'état de la technique le plus proche de la présente invention, concerne un cotyle dc prothèse de hanche à impactcr ct dcstiné à être implanté sans ciment. FR 2 686 791, which represents the closest state of the art to the present invention, relates to an impact prosthesis acetabulum and intended to be implanted without cement.

La cupule métallique décrite dans ce document comporte des stries annulaires couvrant sensiblement le tiers de la surface externe dc la cupule à partir du bord annulaire de cclle-ci ct formant des gorges de section transversale triangulaire. En outre, des rainures s'étendent selon des plans méridiens uniformément répartis autour de l'axe de la cupule tous les quinze degrés sur toute la hauteur de la surface couverte par les Stries ainsi que quatre fentcs permettant de donner une certaine élasticité au pourtour de la cupule pour permettre l'introduction du noyau à l'intérieur de la cupule et son verrouillage. La paroi de la cupule comporte en outre une pluralité dc trous traversants pour permettre le passage de vis de fixation et un alésage pour permettre le positionnemcnt de la cupule dans la partie osseuse au moyen d'un ancillaire. The metal cup described in this document comprises annular grooves covering substantially one third of the external surface of the cup from the annular edge of the latter and forming grooves of triangular cross section. In addition, grooves extend along meridian planes uniformly distributed around the axis of the cup every fifteen degrees over the entire height of the surface covered by the ridges as well as four fentcs allowing to give a certain elasticity to the periphery of the cup to allow the introduction of the core inside the cup and its locking. The wall of the cup also has a plurality of through holes to allow the passage of fixing screws and a bore to allow the positioning of the cup in the bone part by means of an ancillary.

Les stries et les rainures permettent normalement d'assurer l'immobilisation, tant en rotation qu'en translation, du cotyle une fois la réhabilitation osseusc effectivc.  The grooves and grooves normally make it possible to immobilize, both in rotation and in translation, the acetabulum once the bone rehabilitation has been carried out.

Toutefois, il est à craindre que l'élasticité donnée à la couronne autour de l'ouverture de la cupule métallique par la présencc des fentes ne provoque un descellement. However, it is to be feared that the elasticity given to the crown around the opening of the metal cup by the presence of the slots will cause loosening.

Le but de la présente invention est de proposer une cupule métallique qui puisse être implantée et fixée sans l'aide de vis et qui puisse être utilisée indifféremment avec un noyau interne mobile ou un noyau interne fixe. The object of the present invention is to provide a metal cup which can be implanted and fixed without using screws and which can be used either with a movable internal core or a fixed internal core.

L'invention conccrne donc un composant acétabulaire, destiné à être implanté sans ciment, ct comportant une cupule cxteme métallique et un noyau inteme en matière plastique logeant à l'intérieur dc la cupule externe. The invention therefore relates to an acetabular component, intended to be implanted without cement, and comprising a metal external cup and an internal plastic core housed inside the external cup.

L'invention atteint son but par le fait que la cupule comporte une paroi hémisphérique d'axe X délimitée par un plan équatorial P1 et qui sc prolonge audelà dudit plan équatorial par un rebord cylindrique biseauté dc tellc manière que cc rebord présente une partie scmi-annulairc dc hauteur sensiblement constante, raccordée à deux parties en forme dc coin, ladite paroi hémisphérique définissant une portée externe sensiblement sphérique et une portée interne sphérique lisse exempte d'ouvertures sur laquelle Ic noyau interne est en appui et par le fait que ladite cupule comporte sur sa paroi cxtcrne au voisinage du plan équatorial une couronne ayant un diamètre extérieur supérieur au diamètre de la portée externe et équipée d'une pluralité de dents répartics cn rangées dans des plans parallèles au plan équatorial de part et d'autre de ce demier, lesdites dents ayant Icurs pointes dirigécs globalement dans des directions opposées au fond de la cupule, lesdites dents étant destinées à coopérer avec le rebord périphérique de la cavité cotyloïdienne.  The invention achieves its object by the fact that the cup comprises a hemispherical wall of axis X delimited by an equatorial plane P1 and which sc extends beyond said equatorial plane by a cylindrical rim bevelled so that this rim has a scmi- annular of substantially constant height, connected to two wedge-shaped parts, said hemispherical wall defining a substantially spherical external bearing and a smooth spherical internal bearing free of openings on which the internal core is supported and by the fact that said cup includes on its cxtcrne wall in the vicinity of the equatorial plane, a crown having an outer diameter greater than the diameter of the outer bearing surface and equipped with a plurality of distribution teeth cn arranged in planes parallel to the equatorial plane on either side of the latter, said teeth having their points generally directed in directions opposite to the bottom of the cup, the said teeth being intended to cooperate with the peripheral rim of the acetabulum.

Grâce à cette structure, les dents assurcnt la fixation primaire de la cupule métallique par "press-fit", au nivcau cortical périphérique et non en fond de cotyle, le "press-fit" correspondant à la différencie des diamètres de la couronne et de la portée externe dc la cupule, et étant compris de préférence entre 1 et 3 mm. Thanks to this structure, the teeth ensure the primary fixation of the metal cup by "press-fit", at the peripheral cortical level and not at the base of the acetabulum, the "press-fit" corresponding to the differentiation of the diameters of the crown and of the external bearing of the cup, and preferably being between 1 and 3 mm.

Le diamètre de la cavité cotyloïdienne préalablement fraisée est normalement égal au diamètre de la portée externe dc la cupule métallique.The diameter of the acetabular cavity previously milled is normally equal to the diameter of the outer surface of the metal cup.

Le dessin des dents dc la couronne est choisi de manière à renforcer les stabilités de la cupule à la torsion, par effet des cannelures entre les dents de chaque rangée, et à l'arrachement, par effet hameçon résultant de la direction des pointes des dents. The design of the teeth of the crown is chosen so as to reinforce the stability of the cup when twisted, by the effect of grooves between the teeth of each row, and when pulled out, by hook effect resulting from the direction of the tips of the teeth. .

En outre, l'absence de trous traversants dans la paroi hémisphérique et l'absence de vis permet l'utilisation dc noyaux internes sphériques, fixes ou mobiles. In addition, the absence of through holes in the hemispherical wall and the absence of screws allows the use of spherical internal cores, fixed or mobile.

Dans le cas de l'utilisation de noyaux internes fixes, le rebord de la cupule comporte évidemment des moyens d'immobilisation du noyau qui coopèrent avec des moyens associés du noyau. In the case of the use of fixed internal cores, the rim of the cup obviously includes means for immobilizing the core which cooperate with associated means of the core.

Les avantageuses dispositions suivantes sont en outre adoptées pour la cupule. The following advantageous arrangements are also adopted for the cup.

- Les dents sont délimitées par dcs surfaces annulaires parallèles au plan équatorial P1 des surfaces coniqucs faisant un angle de 65" environ avec le plan équatorial et sont séparées par des rainures de section triangulaire sensiblement parallèles à l'axe X. - The teeth are delimited by annular surfaces parallel to the equatorial plane P1 of the conical surfaces making an angle of approximately 65 "with the equatorial plane and are separated by grooves of triangular section substantially parallel to the axis X.

- Les dents des différentes rangées sont disposées dans des plans méridicns passant par l'axe X. - The teeth of the different rows are arranged in meridian planes passing through the X axis.

- Les extrémités des dents sont troncaturées.  - The ends of the teeth are truncated.

- La hautcur des dents des différcntes rangées croit lorsqu'on se rapproche de l'ouverture de la cupule. - The height of the teeth of the different rows grows when one approaches the opening of the cup.

- Les extrémités des dents sont disposées sur un cône. - The ends of the teeth are arranged on a cone.

- Il est prévu quatre rangées équidistantes de dents dont deux sont disposées à la périphérie du rebord et les deux autres sont disposées de l'autre côté du plan équatorial. - Four equidistant rows of teeth are provided, two of which are arranged on the periphery of the rim and the other two are arranged on the other side of the equatorial plane.

- La paroi hémisphérique présente cn outre sur sa portée externe plusieurs alésages borgncs pour recevoir des tctes de pions d'ancrage, Icsdits alésages étant disposés dans la zone de la paroi hémisphérique située au droit de la partie semi-annulaire du rebord.  - The hemispherical wall has, in addition to its external bearing, several blind bores for receiving tctes of anchor pins, said bores being arranged in the zone of the hemispherical wall situated in line with the semi-annular part of the rim.

- Le rebord présente sur sa face interne une gorge annulaire située dans un plan parallèle au plan équatorial et séparée de la face d'extrémité de la cupule par une nervure, cette nervure ayant un diamètre intérieur supérieur au diamètre intérieur de la paroi hémisphérique et présentant une pluralité d'encoches dans la partie semi-annulaire du rebord. - The rim has on its internal face an annular groove located in a plane parallel to the equatorial plane and separated from the end face of the cup by a rib, this rib having an inside diameter greater than the inside diameter of the hemispherical wall and having a plurality of notches in the semi-annular part of the rim.

D'autres avantages et caractéristiques de l'invention ressortiront à la lecture de la description suivante faite à titre d'exemple et en référence au dessin annexé dans lequel
la figure 1 est une vue en perspective d'une cupule métallique d'un composant acétabulaire conforme à l'invention;
la figure 2 est une vue en perspective d'un premier noyau interne susceptible d'être introduit à l'intérieur dc la cupule montrée à la figure 1 et immobilisé par rapport à cette dernière;
la figure 3 est une vue en perspective d'un deuxième noyau interne, du type mobile, susceptible d'être introduit à l'intérieur dc la cupule de la figure 1;
la figure 4 est une vue de dessous de la cupule dc la figure 1, cette vue étant prise selon une direction parallèle à l'axe X de la paroi hémisphérique de cette cupule
la figure 5 est une coupe selon la ligne V-V de la figure 4
la figure 6 est une coupe selon la ligne VI-VI de la figure 4 par un plan méridicn passant par le sommet des dents;
la figure 7 est une vue latérale d'une portion de la couronne dentée prise selon la direction de la flèche F de la figure S
la figure 8 est une vue de dessous du noyau interne fixe montré sur la figure 2;
la figure 9 est une coupe selon la ligne IX-IX dc la figure 8
la figure 10 est une coupe selon la ligne X-X dc la figure 8 qui montre en détail les moyens d'encliquetage
la figure 11 est une vue de dessous du noyau interne mobile montré sur lafigure3;
la figure 12 est une coupe selon la ligne XII-XII de la figure 11.Other advantages and characteristics of the invention will emerge on reading the following description given by way of example and with reference to the appended drawing in which
Figure 1 is a perspective view of a metal cup of an acetabular component according to the invention;
Figure 2 is a perspective view of a first internal core capable of being inserted inside the cup shown in Figure 1 and immobilized relative to the latter;
Figure 3 is a perspective view of a second internal core, of the movable type, capable of being inserted inside the cup of Figure 1;
Figure 4 is a bottom view of the cup dc Figure 1, this view being taken in a direction parallel to the axis X of the hemispherical wall of this cup
Figure 5 is a section along the line VV of Figure 4
Figure 6 is a section along line VI-VI of Figure 4 by a meridian plane passing through the top of the teeth;
Figure 7 is a side view of a portion of the ring gear taken in the direction of arrow F in Figure S
Figure 8 is a bottom view of the fixed internal core shown in Figure 2;
Figure 9 is a section along the line IX-IX dc Figure 8
Figure 10 is a section along line XX dc Figure 8 which shows in detail the latching means
Figure 11 is a bottom view of the movable inner core shown in Figure 3;
Figure 12 is a section along line XII-XII of Figure 11.

Les figures 1 à 3 montrent respectivemcnt une cupule métallique 1 conforme à l'invention, un noyau interne fixe 2 et un noyau interne mobile 3. FIGS. 1 to 3 respectively show a metal cup 1 according to the invention, a fixed internal core 2 and a movable internal core 3.

Comme on le voit sur la figure 1, la cupule 1 de forme hémisphérique comporte une face d'extrémité 4 biseautée, définie globalement par deux plans P2, P3 et autour de son ouverture S une couronne 6 comportant plusieurs rangées dc dents 7. As can be seen in FIG. 1, the cup 1 of hemispherical shape has a bevelled end face 4, defined generally by two planes P2, P3 and around its opening S a crown 6 comprising several rows of teeth 7.

La cavité interne 8 de la cupule 1 est globalement sphérique et est susceptible de recevoir soit le noyau 2 montré sur la figure 2, soit le noyau 3 montré sur la figure 3. Le noyau 2 montré sur la figure 2 comporte des moyens d'immobilisation 9 susceptibles de coopérer avec des moyens associés prévus près de l'ouverture 5 de la cupule 1. Ainsi qu'on le voit sur la figure 2, la face d'extrémité du noyau 2 est également biseautée de la même manière que la face d'extrémité 4 de la cupule 1.The internal cavity 8 of the cup 1 is generally spherical and is capable of receiving either the core 2 shown in Figure 2, or the core 3 shown in Figure 3. The core 2 shown in Figure 2 includes immobilization means 9 likely to cooperate with associated means provided near the opening 5 of the cup 1. As can be seen in FIG. 2, the end face of the core 2 is also bevelled in the same way as the face d end 4 of the cup 1.

La cupule métallique est réalisée en acier inoxydable ou en titane et le noyau 2 ou 3 est réalisé en une matière plastique biocompatible, du polyéthylène à haute densité par exemple.The metal cup is made of stainless steel or titanium and the core 2 or 3 is made of a biocompatible plastic material, high density polyethylene for example.

Ainsi que cela est montré sur les figures 4 à 7, la cupule 1 comporte une paroi hémisphérique 10 délimitée par un plan équatorial P1 d'axe X, cette paroi hémisphérique 10 présente une portée interne 11 lisse et sphérique et une portée externe 12 essentiellement sphérique et évasée légèrement dans la zone du plan équatorial Pi. La paroi hémisphérique est prolongée au-delà du plan équatorial P1 par un rebord cylindrique 13 biseauté dont la face d'extrémité 4 est définie par le plan P2 parallèle au plan équatorial P1 et une surface inclinée
P3 contenant un grand diamètre 14 de l'ouverture de la cupule 5 et une tangente à la paroi hémisphérique 10 dans le plan équatorial. Cette surface inclinée P3 est légèrement concavc du côté extérieur à la cupule 1 et peut être confonduc, en première approximation, avec un plan incliné.As shown in FIGS. 4 to 7, the cup 1 comprises a hemispherical wall 10 delimited by an equatorial plane P1 of axis X, this hemispherical wall 10 has an internal bearing 11 smooth and spherical and an external bearing 12 essentially spherical and slightly flared in the region of the equatorial plane Pi. The hemispherical wall is extended beyond the equatorial plane P1 by a bevelled cylindrical rim 13 whose end face 4 is defined by the plane P2 parallel to the equatorial plane P1 and a surface tilted
P3 containing a large diameter 14 of the opening of the cup 5 and a tangent to the hemispherical wall 10 in the equatorial plane. This inclined surface P3 is slightly concavc on the outside of the cup 1 and can be confused, as a first approximation, with an inclined plane.

Le rebord 13 se présente ainsi sous la forme d'un demi-anneau circulaire de hauteur constante dont les extrémités sont prolonges par deux parties cn forme de coin. La cupule 1 comporte ainsi une ouverture 5 dont la forme s'adapte parfaitement au pourtour dc l'ouverture de la cavité cotyloidienne.  The rim 13 is thus in the form of a circular half-ring of constant height, the ends of which are extended by two parts in the form of a wedge. The cup 1 thus comprises an opening 5 whose shape adapts perfectly to the periphery of the opening of the acetabular cavity.

Le diamètre extérieur du rebord 13 est supérieur au diamètre extérieur de la portée externe 12. L'écart entre ces deux diamètres est compris entre 2 et 3 mm, ct la portée externe 12, évasée au voisinage du plan équatorial P1, se raccorde à la périphérie du rebord 13. The outside diameter of the rim 13 is greater than the outside diameter of the outer bearing 12. The difference between these two diameters is between 2 and 3 mm, and the outer bearing 12, flared in the vicinity of the equatorial plane P1, is connected to the edge 13.

La couronne dentée 6 s'étend en hauteur de part et d'autre du plan équatorial P1 et ellc comporte quatre rangées équidistantes de dents, réalisées par usinage de la cupule. Ces dents sont obtenues en réalisant trois gorges périphériques 15a, 15b, 15c dc section triangulaire délimitées chacune par un plan 16 parallèle au plan équatorial P1 ct une surface conique 16 qui fait un angle A voisin de 65" avec le plan 17. Ensuite, on usine sur le pourtour de la cupule 1 une pluralité de rainures 18 de section triangulaire, parallèlement à l'axe X, ces rainures 18 étant régulièrement espacées autour de l'axe X et s'étendant jusqu'au fond des gorges 15a, 15b et 15c. Les fonds des gorges 15a, 15b et 15c sont équidistants de l'axe X, mais les sommets des dents 7 sont disposés sur une surface conique 19, de telle manière que la hauteur des dents croit depuis la rangée de dents la plus proche du fond de la cupule 1 jusqu'à la rangée de dents disposées sur le pourtour de la face d'extrémité 4 de la cupule 1. The toothed crown 6 extends in height on either side of the equatorial plane P1 and it comprises four equidistant rows of teeth, produced by machining the cup. These teeth are obtained by making three peripheral grooves 15a, 15b, 15c dc triangular section each delimited by a plane 16 parallel to the equatorial plane P1 ct a conical surface 16 which makes an angle A close to 65 "with the plane 17. Then, we factory on the periphery of the cup 1 a plurality of grooves 18 of triangular section, parallel to the axis X, these grooves 18 being regularly spaced around the axis X and extending to the bottom of the grooves 15a, 15b and 15c. The bottoms of the grooves 15a, 15b and 15c are equidistant from the X axis, but the tops of the teeth 7 are arranged on a conical surface 19, in such a way that the height of the teeth increases from the nearest row of teeth. from the bottom of the cup 1 to the row of teeth arranged on the periphery of the end face 4 of the cup 1.

Chaque dent 7 est ainsi délimitée par quatre facettes planes et comporte une extrémité troncaturée, et les pointes dc dents 7 sont dirigées globalement dans une direction opposée au fond de la cupule 1. Le nombre de dents de chaque rangée peut être élevé et atteindre, voire dépasser, le chiffrc de 60 ainsi que cela est montré sur la figure 4. Each tooth 7 is thus delimited by four planar facets and has a truncated end, and the tips of teeth 7 are directed generally in a direction opposite to the bottom of the cup 1. The number of teeth in each row can be high and even reach exceed, the figure of 60 as shown in figure 4.

La partie de la paroi hémisphérique 10, située au droit de la portion semi-annulaire du rebord 13, comporte en outre trois alésages borgnes 20 ouverts vers l'extérieur et destinés, le cas échéant, à rccevoir des pions d'ancrage 21, visibles sur la figure 1. The part of the hemispherical wall 10, located in line with the semi-annular portion of the rim 13, further comprises three blind holes 20 open towards the outside and intended, where appropriate, to receive anchor pins 21, visible in figure 1.

Sur la face inteme du rebord 13 est ménagée une gorge annulaire 22 de section carrée qui s'étend dans un plan parallèle au plan équatorial P1, et la nervure 23 qui sépare la gorge annulaire 22 de la face d'extrémité 4 a un diamètre intérieur supérieur au diamètre de la portée inteme 11. Dans cette nervure 23 Sont ménagées en outre trois encoches 24. La gorge annulaire 22 et les encoches 24 sont destinées à coopérer avec les moyens d'immobilisation 9 du noyau fixe 2. On the inner face of the rim 13 is formed an annular groove 22 of square section which extends in a plane parallel to the equatorial plane P1, and the rib 23 which separates the annular groove 22 from the end face 4 has an internal diameter greater than the diameter of the internal surface 11. In this rib 23 Are also provided three notches 24. The annular groove 22 and the notches 24 are intended to cooperate with the immobilizing means 9 of the fixed core 2.

La paroi interne dc la cupule 1 est totalement lisse et recouverte d'un polybrillant. La paroi externe de la cupule 1, hors partie dentée et trous d'ancrage 20, est rccouverte de manière connuc d'une couche rugueuse par corindonnage (alumine) ou d'un revetement cn hydroxyapatite. The internal wall of the cup 1 is completely smooth and covered with a polybrillant. The external wall of the cup 1, apart from the toothed part and anchoring holes 20, is covered in a known manner with a rough layer by corundum (alumina) or with a coating of hydroxyapatite.

Les figures 2, 8 à 10 montrent un noyau 2, du type fixe, adapté à la cupule 1 décrite ci-dessus. La face d'extrémité 30 de cc noyau 2 est également biseautée de la même manière que la cupule 1. Le noyau 2 comporte une cavité interne 31 sphérique destinée à loger la tête sphérique de la tige fémorale non représentée sur le dessin, cette tête sphérique étant introduite dc force dans la cavité 31. Figures 2, 8 to 10 show a core 2, of the fixed type, adapted to the cup 1 described above. The end face 30 of this core 2 is also bevelled in the same way as the cup 1. The core 2 has an internal spherical cavity 31 intended to accommodate the spherical head of the femoral stem not shown in the drawing, this spherical head being forced into cavity 31.

Sur le pourtour du noyau 2 qui vient en regard du rebord 13 de la cupule sont formées en altemance des protubérances 33 qui viennent sc placcr dans les encoches 24 de la cupule 1 pour empêcher la rotation du noyau 2 autour de l'axe X, et des bourrelets d'encliquetage 34 qui viennent se loger dans la gorge annulaire 22 par déformation élastique lors de Icur passage devant la nervure 23 afin d'empêcher la sortie du noyau fixe 2 dc l'intérieur dc la cupule 1. La position et la taille des protubérances 33 et des bourrelets d'encliquetage 34 sont évidemment adaptées cn fonction des taillcs ct positions de la gorge 22, des encoches 24 et dc la nervure interne 23.  On the periphery of the core 2 which comes opposite the rim 13 of the cup are formed alternately protuberances 33 which come sc placed in the notches 24 of the cup 1 to prevent rotation of the core 2 around the axis X, and snap beads 34 which are received in the annular groove 22 by elastic deformation during the passage in front of the rib 23 in order to prevent the exit of the fixed core 2 from inside the cup 1. The position and the size protuberances 33 and snap-on beads 34 are obviously adapted according to the sizes and positions of the groove 22, the notches 24 and the internal rib 23.

Les figures 11 et 12 montrent un noyau 3 présentant une portée externe 40 sphérique adaptée à la cavité interne 8 de la cupule 1 ct une portée interne 41 également sphérique dans laquelle s'adapte la tête sphérique dc la tige fémorale. La face d'extrémité du noyau 4 est ici délimitée par un plan transversal 42 ct une portée conique 43 permettant le débattement dc la tige fémorale. Figures 11 and 12 show a core 3 having an outer spherical bearing 40 adapted to the internal cavity 8 of the cup 1 and an inner bearing 41 also spherical in which fits the spherical head dc the femoral stem. The end face of the core 4 is here delimited by a transverse plane 42 and a conical bearing 43 allowing the movement of the femoral stem.

Ainsi que cela est montré sur les figures 8 et 11, les noyaux 2 et 3 sont en outre équipés sur leurs faces externes de trois alésages 44 permettant le positionnement.  As shown in Figures 8 and 11, the cores 2 and 3 are further equipped on their external faces with three bores 44 for positioning.

Claims (11)

REVENDICATIONS 1. Composant acétabulaire, destiné à être implanté sans ciment, et comportant une cupule externe (1) métallique et un noyau interne (2, 3) en matière plastique logeant à l'intérieur de la cupule externe, caractérisé par le fait que la cupule (1) comporte une paroi hémisphérique (10) d'axe X délimitée par un plan équatorial P1 et qui se prolonge au-delà dudit plan équatorial par un rebord (13) cylindrique biseauté de telle manière que ce rebord (13) présente une partie semiannulaire de hauteur sensiblement constante, raccordée à deux parties en forme de coin, ladite paroi (10) hémisphérique définissant une portée externe (12) sensiblement sphérique et une portée interne (11) sphérique lisse, exempte d'ouvertures et sur laquelle le noyau interne (3, 4) est cn appui, et par le fait que ladite cupule (1) comporte sur sa paroi externe au voisinage du plan équatorial P1 une couronne (6) ayant un diamètre extérieur supérieur au diamètre de la portée externe et équipée d'une pluralité de dents (7) réparties en rangées dans des plans parallèles au plan équatorial P1 de part et d'autrc de ce dernier, lesdites dents (7) ayant leurs pointes dirigées globalement dans des directions opposées au fond de la cupule (1), lesdites dents (7) étant destinées à coopérer avec le rebord périphérique de la cavité cotyloïdienne. CLAIMS 1. Acetabular component, intended to be implanted without cement, and comprising an external metal cup (1) and an internal plastic core (2, 3) accommodating inside the external cup, characterized in that the cup (1) has a hemispherical wall (10) of axis X delimited by an equatorial plane P1 and which extends beyond said equatorial plane by a bevelled cylindrical rim (13) so that this rim (13) has a semiannular part of substantially constant height, connected to two wedge-shaped parts, said hemispherical wall (10) defining a substantially spherical external bearing (12) and a smooth spherical internal bearing (11), free of openings and on which the core internal (3, 4) is supported, and by the fact that said cup (1) has on its external wall in the vicinity of the equatorial plane P1 a crown (6) having an outside diameter greater than the diameter of the external bearing and equipped with a plurality of teeth (7) distributed in rows in planes parallel to the equatorial plane P1 on either side of the latter, said teeth (7) having their points directed generally in directions opposite to the bottom of the cup (1), said teeth (7) being intended to cooperate with the peripheral rim of the acetabulum. 2. Composant acétabulaire selon la revendication 1, caractérisé par le fait que les dents (7) sont délimitées par des surfaces annulaires (16) parallèles au plan équatorial P1, des surfaces coniques (17) faisant un angle de 65" environ avec le plan équatorial et sont séparées par des rainures (18) de section triangulaire sensiblement parallèles à l'axe X.2. acetabular component according to claim 1, characterized in that the teeth (7) are delimited by annular surfaces (16) parallel to the equatorial plane P1, conical surfaces (17) making an angle of approximately 65 "with the plane equatorial and are separated by grooves (18) of triangular section substantially parallel to the axis X. 3. Composant acétabulaire selon la revendication 2, caractérisé par le fait que les dents (7) des différentes rangées sont disposées dans des plans méridiens passant par l'axe X.3. acetabular component according to claim 2, characterized in that the teeth (7) of the different rows are arranged in meridian planes passing through the axis X. 4. Composant acétabulaire selon l'une quelconque des revendications 2 ou 3, caractérisé par le fait que les extrémités des dents sont troncaturées.4. acetabular component according to any one of claims 2 or 3, characterized in that the ends of the teeth are truncated. 5. Composant acétabulaire selon la revendication 4, caractérisé par le fait que la hauteur des dents (7) des différentes rangées croît lorsqu'on se rapproche de l'ouverture (5) de la cupule (1).5. acetabular component according to claim 4, characterized in that the height of the teeth (7) of the different rows increases when approaching the opening (5) of the cup (1). 6. Composant acétabulaire selon la revendication 5, caractérisé par le fait que les extrémités des dents sont disposées sur un cône (19). 6. acetabular component according to claim 5, characterized in that the ends of the teeth are arranged on a cone (19). 7. Composant acétabulaire selon l'une quelconque des revendications 1 à 6, caractérisé par le fait qu'il est prévu quatre rangées équidistantes de dents, dont deux sont disposées à la périphérie du rebord (13) et les deux autres sont disposées de l'autre côté du plan équatorial P1.7. acetabular component according to any one of claims 1 to 6, characterized in that there are provided four equidistant rows of teeth, two of which are arranged at the periphery of the rim (13) and the other two are arranged from l on the other side of the equatorial plane P1. 8. Composant acétabulaire selon l'une quelconque des revendications 1 à 7, caractérisé par le fait que la paroi hémisphérique (10) présente en outre sur sa portée externe (12) plusieurs alésages borgnes (20) pour recevoir des têtes de pions d'ancrage (21), lesdits alésages étant disposés dans la zone de la paroi hémisphérique située au droit de la partie scmi-annulaire du rebord (13).8. acetabular component according to any one of claims 1 to 7, characterized in that the hemispherical wall (10) also has on its outer surface (12) several blind bores (20) for receiving pawn heads of anchoring (21), said bores being arranged in the region of the hemispherical wall situated in line with the scmi-annular part of the flange (13). 9. Composant acétabulaire selon l'une quelconque des revendications 1 à 8, caractérisé par le fait que le rebord (13) présente sur sa face interne une gorge annulaire (22) située dans un plan parallèle au plan équatorial ct séparée de la face d'extrémité (4) de la cupule (1) par une nervure interne (23), cette nervure ayant un diamètre intérieur supérieur au diamètre intérieur de la paroi hémisphérique et présentant une pluralité d'encoches (24) dans la partie semi-annulaire du rebord (13).9. acetabular component according to any one of claims 1 to 8, characterized in that the flange (13) has on its internal face an annular groove (22) located in a plane parallel to the equatorial plane ct separated from the face d end (4) of the cup (1) by an internal rib (23), this rib having an internal diameter greater than the internal diameter of the hemispherical wall and having a plurality of notches (24) in the semi-annular part of the rim (13). 10. Composant acétabulaire selon la revendication 9, caractérisé en ce que le noyau interne (2) est monté fixe à l'intérieur de la cupule (1) et comporte une face d'extrémité (30) biseautée qui, à l'état monté du noyau, est confondue avec la face d'ouverturc (4) dc la cupule (1), Icdit noyau comportant des bourrelets d'encliquetage (34) altemant avec des protubérances (33), lesdites protubérances (33) étant destinées à coopérer avec les encoches (24) du rebord pour immobiliser en rotation le noyau par rapport à la cupule, ct lesdits bourrelets d'encliquetage (34) étant susceptibles de se loger dans la gorge (22) par déformation élastique.10. acetabular component according to claim 9, characterized in that the internal core (2) is fixedly mounted inside the cup (1) and has an bevelled end face (30) which, in the assembled state of the core, coincides with the opening face (4) of the cup (1), Icdit core comprising snap-on beads (34) alternating with protuberances (33), said protuberances (33) being intended to cooperate with the notches (24) of the rim for immobilizing the core in rotation relative to the cup, and said snap-on beads (34) being capable of being housed in the groove (22) by elastic deformation. 11. Composant acétabulaire selon l'une quelconque des revendications 1 à 9, caractérisé par le fait que le noyau interne (4) est monté libre en rotation à l'intérieur de la cupule (1) ct comporte des portées cxterne (40) et interne (41) sphériques s'étendant sur une étendue supérieure à une dcmi-sphère. 11. acetabular component according to any one of claims 1 to 9, characterized in that the internal core (4) is mounted to rotate freely inside the cup (1) ct has external bearings (40) and internal (41) spherical extending over an extent greater than a dcmi-sphere.
FR9714021A 1997-11-07 1997-11-07 ACETABULAR COMPONENT Expired - Lifetime FR2770769B1 (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795302A1 (en) * 1999-06-23 2000-12-29 Rech S Et De Fabrication S E R Hip prosthesis comprises a spherical head, a stem and an ambulatory component comprising a polyethylene or metal cup fixed in a cavity, the surfaces contacting the head and the socket being of high friction material
EP1072236A1 (en) * 1999-07-30 2001-01-31 Biomet Merck France Acetabular cup for hip prosthesis
FR2798841A1 (en) * 1999-09-28 2001-03-30 Depuy France Rotary implant for hip prosthesis comprises cup comprising hemispherical part receiving insert with iliac expansions fixed to cylindrical elongation of cup and plate anchored in bone
FR2800597A1 (en) * 1999-11-09 2001-05-11 Amplitude DUAL MOBILITY HIP PROSTHESIS COTYL
FR2803192A1 (en) * 1999-12-31 2001-07-06 Jacques Fourastier Hip prosthesis acetabular implant comprises metal cup with spikes and tapering stabilising band for impact fitting
WO2001070141A1 (en) * 1998-09-24 2001-09-27 Ortho - I.D. Sarl Anchoring acetabular cup
FR2809301A1 (en) * 2000-05-24 2001-11-30 Rech S Et De Fabrication S E R Metallic cup implant for hip replacement prosthesis, includes external toothed area with zones where teeth are more pronounced
FR2825911A1 (en) * 2001-06-19 2002-12-20 Roland Petit Cotyloidal implant has outer shell and inset with mating lugs to position them together
FR2827504A1 (en) * 2001-07-19 2003-01-24 Olivier Boudot Hip joint cotyloid cavity reconstruction assembly comprises cruciform base, cemented metal cup and polyethylene liner
FR2840802A1 (en) * 2002-06-13 2003-12-19 Philippe Hernigou Cotyloid implant for hip prosthesis comprises cupule delimiting smooth and polished cavity with couplings able to engage fixed core complementary couplings, core open end having support flange connected to fixed core cavity
FR2854058A1 (en) 2003-04-23 2004-10-29 Medacta Int Sa Osseous anchoring system for acetabular cavity, has shell with circumferential sectors in form of clip or discontinuous edge, and cup forming insert with continuous flange and circumferential sectors
FR2898266A1 (en) * 2006-03-10 2007-09-14 Michel Timoteo Cotyloid implant for skull cap of resurfacing femoral head, has femoral acetabulum with wall whose thickness increases between peripheral edge and pole, where another edge of acetabulum is inclined at angle with respect to plane
FR2904931A1 (en) * 2006-08-18 2008-02-22 Advanced Technical Fabrication Double mobility acetabulum for reconstituting articulation of hip, has extraction unit, whose notch is provided on surface, where notch is conformed and oriented for engagement and entanglement of end of axial extraction tool of cup
JP2013524981A (en) * 2010-04-29 2013-06-20 フィンズブリー・（デヴェロップメント）・リミテッド Prosthesis
US20170119532A1 (en) * 2009-12-21 2017-05-04 Derek James Wallace McMinn Cup with conical permanent pegs
ITUA20161662A1 (en) * 2016-03-15 2017-09-15 Adler Ortho S R L COTILOIDEA PROSTHESIS PERFORMED BY ANTHROPROSTHESES.
EP3391858A3 (en) * 2017-02-02 2018-11-21 Howmedica Osteonics Corp. Constrained shell for modular dual mobility system

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EP0461019A1 (en) * 1990-06-06 1991-12-11 Jean-Claude Bouvet Prosthesis ball joint
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FR2686791A1 (en) * 1992-02-03 1993-08-06 Biotecnic Sa Acetabulum for hip prosthesis to be impacted, intended to be implanted without cement, consisting of an outer cup and an inner core
EP0610146A1 (en) * 1993-02-04 1994-08-10 Jean-Luc Chauvin Expansible cotyloid prosthesis
WO1995017140A1 (en) * 1993-12-23 1995-06-29 Astra Aktiebolag Cup
FR2720930A1 (en) * 1994-06-09 1995-12-15 Medinov Sa Synthetic cotyloid implant insert for hip prosthesis
EP0739613A1 (en) * 1995-04-27 1996-10-30 BENOIST GIRARD & Cie Acetabulum cup for a total prosthesis of the hip
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DE3101333A1 (en) * 1980-02-08 1981-12-24 Allo Pro AG, 6330 Cham Surgical implant, especially acetabulum
DE3406357A1 (en) * 1983-06-07 1984-12-13 Gebrüder Sulzer AG, Winterthur Acetabulum which can be anchored without cement
EP0281984A1 (en) * 1987-03-07 1988-09-14 Hermann Dr. Künne Hip endoprosthesis
FR2641461A1 (en) * 1989-01-11 1990-07-13 Cremascoli Spa G Acetabulum prosthesis which may be used without cement
FR2632854A1 (en) * 1989-01-31 1989-12-22 3M Sante Laboratoires Acetabular piece for prosthesis and its applicator
EP0461019A1 (en) * 1990-06-06 1991-12-11 Jean-Claude Bouvet Prosthesis ball joint
FR2668923A1 (en) * 1990-11-13 1992-05-15 Tech Avancees Sarl Cup for acetabular implantation, and hip prosthesis comprising this cup
FR2686791A1 (en) * 1992-02-03 1993-08-06 Biotecnic Sa Acetabulum for hip prosthesis to be impacted, intended to be implanted without cement, consisting of an outer cup and an inner core
EP0610146A1 (en) * 1993-02-04 1994-08-10 Jean-Luc Chauvin Expansible cotyloid prosthesis
WO1995017140A1 (en) * 1993-12-23 1995-06-29 Astra Aktiebolag Cup
FR2720930A1 (en) * 1994-06-09 1995-12-15 Medinov Sa Synthetic cotyloid implant insert for hip prosthesis
EP0739613A1 (en) * 1995-04-27 1996-10-30 BENOIST GIRARD & Cie Acetabulum cup for a total prosthesis of the hip
DE19606057A1 (en) * 1996-02-19 1997-08-21 Horst Broziat Metallic mould part for knee implant

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070141A1 (en) * 1998-09-24 2001-09-27 Ortho - I.D. Sarl Anchoring acetabular cup
FR2795302A1 (en) * 1999-06-23 2000-12-29 Rech S Et De Fabrication S E R Hip prosthesis comprises a spherical head, a stem and an ambulatory component comprising a polyethylene or metal cup fixed in a cavity, the surfaces contacting the head and the socket being of high friction material
EP1072236A1 (en) * 1999-07-30 2001-01-31 Biomet Merck France Acetabular cup for hip prosthesis
FR2796835A1 (en) * 1999-07-30 2001-02-02 Merck Biomaterial France COTYL FOR HIP PROSTHESIS
FR2798841A1 (en) * 1999-09-28 2001-03-30 Depuy France Rotary implant for hip prosthesis comprises cup comprising hemispherical part receiving insert with iliac expansions fixed to cylindrical elongation of cup and plate anchored in bone
WO2001024740A1 (en) * 1999-09-28 2001-04-12 Depuy France Acetabular implant for hip prosthesis
US6620200B1 (en) 1999-09-28 2003-09-16 Depuy France Acetabular implant for hip prosthesis
EP1099426A1 (en) * 1999-11-09 2001-05-16 Amplitude Hip prosthesis acetabular cup with double mobility
FR2800597A1 (en) * 1999-11-09 2001-05-11 Amplitude DUAL MOBILITY HIP PROSTHESIS COTYL
FR2803192A1 (en) * 1999-12-31 2001-07-06 Jacques Fourastier Hip prosthesis acetabular implant comprises metal cup with spikes and tapering stabilising band for impact fitting
FR2809301A1 (en) * 2000-05-24 2001-11-30 Rech S Et De Fabrication S E R Metallic cup implant for hip replacement prosthesis, includes external toothed area with zones where teeth are more pronounced
FR2825911A1 (en) * 2001-06-19 2002-12-20 Roland Petit Cotyloidal implant has outer shell and inset with mating lugs to position them together
FR2827504A1 (en) * 2001-07-19 2003-01-24 Olivier Boudot Hip joint cotyloid cavity reconstruction assembly comprises cruciform base, cemented metal cup and polyethylene liner
FR2840802A1 (en) * 2002-06-13 2003-12-19 Philippe Hernigou Cotyloid implant for hip prosthesis comprises cupule delimiting smooth and polished cavity with couplings able to engage fixed core complementary couplings, core open end having support flange connected to fixed core cavity
FR2854058A1 (en) 2003-04-23 2004-10-29 Medacta Int Sa Osseous anchoring system for acetabular cavity, has shell with circumferential sectors in form of clip or discontinuous edge, and cup forming insert with continuous flange and circumferential sectors
FR2898266A1 (en) * 2006-03-10 2007-09-14 Michel Timoteo Cotyloid implant for skull cap of resurfacing femoral head, has femoral acetabulum with wall whose thickness increases between peripheral edge and pole, where another edge of acetabulum is inclined at angle with respect to plane
FR2904931A1 (en) * 2006-08-18 2008-02-22 Advanced Technical Fabrication Double mobility acetabulum for reconstituting articulation of hip, has extraction unit, whose notch is provided on surface, where notch is conformed and oriented for engagement and entanglement of end of axial extraction tool of cup
US20170119532A1 (en) * 2009-12-21 2017-05-04 Derek James Wallace McMinn Cup with conical permanent pegs
US10966837B2 (en) * 2009-12-21 2021-04-06 Derek James Wallace McMinn Cup with conical permanent pegs
JP2013524981A (en) * 2010-04-29 2013-06-20 フィンズブリー・（デヴェロップメント）・リミテッド Prosthesis
ITUA20161662A1 (en) * 2016-03-15 2017-09-15 Adler Ortho S R L COTILOIDEA PROSTHESIS PERFORMED BY ANTHROPROSTHESES.
WO2017157842A1 (en) * 2016-03-15 2017-09-21 Adler Ortho S.R.L. Acetabular prosthesis for hip arthroplasty
EP3391858A3 (en) * 2017-02-02 2018-11-21 Howmedica Osteonics Corp. Constrained shell for modular dual mobility system
US11033395B2 (en) 2017-02-02 2021-06-15 Howmedica Osteonics Corp. Constrained shell for modular dual mobility system

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