FR2649005A1 - Acetabular prosthesis made of plastic - Google Patents

Acetabular prosthesis made of plastic Download PDF

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Publication number
FR2649005A1
FR2649005A1 FR8909149A FR8909149A FR2649005A1 FR 2649005 A1 FR2649005 A1 FR 2649005A1 FR 8909149 A FR8909149 A FR 8909149A FR 8909149 A FR8909149 A FR 8909149A FR 2649005 A1 FR2649005 A1 FR 2649005A1
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Prior art keywords
cap
artificial
acetabulum
hand
artificial acetabulum
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Granted
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FR8909149A
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French (fr)
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FR2649005B1 (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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • 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
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/3008—Properties of materials and coating materials radio-opaque, e.g. radio-opaque markers
    • 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
    • A61F2002/30476—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
    • 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
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
    • 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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30787—Plurality of holes 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
    • A61F2002/3241—Joints for the hip having a ring, e.g. for locking the femoral head into the acetabular cup
    • 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
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • 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
    • A61F2002/348—Additional features
    • A61F2002/3482—Two hemispherical halves having completely different structures
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

The artificial acetabulum 2 comprising grooves 2d which are arranged on its periphery and which make it possible, on the one hand, for the said acetabulum 2 to be cemented directly into the iliac bone or, on the other hand, for it to be snapped into a hollow hemispherical cup 3.

Description

La présente invention est relative à une prothèse cotyloidienne et
plus particulièrement à un cotyle en polyéthylène susceptible d'être
cimenté directement dans l'os iliaque ou impacté, c'est-à-dire enclique
té dans une pièce métallique stabilisée par des vis.The present invention relates to an acetabular prosthesis and
more particularly to a polyethylene cup capable of being
cemented directly into the iliac bone or impacted, i.e. inclined
tee in a metal part stabilized by screws.

On sait qu'il existe à ce jour de nombreuses et différentes méthodes pour la fixation des prothèses cotyloidiennes.  We know that to date there are many different methods for fixing acetabular prostheses.

Tout d'abord, il existe des cotyles cimentables qui sont toujours employés, mais essentiellement chez des patients jeunes et dont l'état osseux est sain. Un tel procédé de mise en place comprend certains inconvénients dûs à la toxicité du ciment acrylique utilisé, ce qui donne
lieu à des réactions générales et à des nécroses de l'os, pouvant entraîner dans le temps le descellement de la prothèse.First of all, there are cementable cups which are still used, but mainly in young patients and whose bone condition is healthy. Such a placement process includes certain drawbacks due to the toxicity of the acrylic cement used, which gives
lead to general reactions and necrosis of the bone, which may cause the prosthesis to loosen over time.

Ces inconvénients ont été résolus en associant aux prothèses consi dérées des moyens d'ancrage directs sans adjonction de ciment acrylique. These drawbacks have been resolved by combining the prostheses considered with direct anchoring means without the addition of acrylic cement.

On utilise alors soit des prothèses cotyloidiennes dont la face extérieure de la calotte comporte un filetage, soit des prothèses fixées au moyen de vis.One then uses either acetabular prostheses whose external face of the cap has a thread, or prostheses fixed by means of screws.

L'utilisation de telles prothèses entraîne certains inconvénients dûs à leur rigidité et à la méthode de mise en place dans le cotyle humain, provoquant ainsi des contraintes qui peuvent dans le temps créer des traumatismes osseux. De même, la plupart des calottes métalliques comprennent sur la totalité de leur surface externe une rugosité permettant la réhabiLitation de l'os. Ainsi, lors de nouvelles interventions chirurgicales, L'arrachage de la prothèse provoque une dégradation trop importante de ce dernier. The use of such prostheses involves certain drawbacks due to their rigidity and to the method of placement in the human acetabulum, thus causing stresses which can, over time, create bone trauma. Likewise, most metal caps include a roughness over the whole of their external surface allowing the bone to rehabilitate. Thus, during new surgical interventions, the tearing of the prosthesis causes too much degradation of the latter.

C'est à ces inconvénients qu'entend plus spécialement remedier la présente invention. It is to these drawbacks that the present invention more specifically intends to remedy.

Le cotyle artificiel en matière plastique suivant l'invention se caractérise en ce qu'il comporte des moyens permettant d'une part de cimenter Ledit cotyle directement dans l'os iliaque ou d'autre part de l'encliqueter élastiquement dans une calotte hémisphérique creuse. The artificial plastic acetabulum according to the invention is characterized in that it comprises means allowing on the one hand to cement said acetabulum directly in the iliac bone or on the other hand to snap it elastically into a hollow hemispherical cap .

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre L'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :
Fig. 1 est une vue éclatée de l'ensemble des éléments d'une prothèse comportant application des perfectionnements suivant l'invention.The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
Fig. 1 is an exploded view of all the elements of a prosthesis comprising application of the improvements according to the invention.

Fig. 2 est une vue de dessus de la calotte hémisphérique creuse suivant L'invention.  Fig. 2 is a top view of the hollow hemispherical cap according to the invention.

Fig. 3 est une vue de détail du cotyle artificiel suivant
L'invention cimenté directement dans l'os iliaque.Fig. 3 is a detail view of the following artificial cup
The invention cemented directly into the iliac bone.

Fig. 4 est une vue semblable à celle de fig. 3, mais illustrant le cotyle encliqueté dans une calotte vissée. Fig. 4 is a view similar to that of FIG. 3, but illustrating the cup snapped into a screw cap.

On a représenté en fig. 1 une prothèse cotyloidienne 1, comportant un cotyle artificiel 2 réalisé en une matière plastique tel que le po lyéthylène à haut poids molléculaire et une calotte hémisphérique creuse 3 prévue en titane ou analogue. There is shown in fig. 1 an acetabular prosthesis 1, comprising an artificial acetabulum 2 made of a plastic material such as po lyethylene with high molecular weight and a hollow hemispherical cap 3 provided in titanium or the like.

Dans le cotyle artificiel 2 est ménagée une cavité 2a munie d'un cône d'entrée 2b permettant le logement de la boule céphalique 4 de la prothèse fémorale 5, à la manière usuelle. La face externe 2c du cotyle 2 est pourvue d'un certain nombre de rainures de retenue 2d prévues avantageusement transversales, de sorte que l'on puisse le fixer soit directement dans l'os iliaque (fig. 3), soit dans la calotte hémisphérique creuse 3 (fig. 4), comme on L'expliquera mieux plus loin. In the artificial acetabulum 2 is provided a cavity 2a provided with an inlet cone 2b allowing the housing of the cephalic ball 4 of the femoral prosthesis 5, in the usual manner. The external face 2c of the acetabulum 2 is provided with a number of retaining grooves 2d advantageously provided transversely, so that it can be fixed either directly in the iliac bone (fig. 3), or in the hemispherical cap hollow 3 (fig. 4), as will be explained better below.

La calotte hémisphérique 3 représentée en fig. 1 et 2 comprend sur sa paroi externe 3a et de chaque coté de son ple, d'abord une série de fentes 3b réalisées en direction de son centre et dont l'une au moins est débouchante dans un trou excentré 3c donnant une certaine souplesse à la calotte 3 afin de faciliter sa mise en place dans le cotyle humain. The hemispherical cap 3 shown in fig. 1 and 2 comprises on its external wall 3a and on each side of its ple, firstly a series of slots 3b produced in the direction of its center and at least one of which opens out in an eccentric hole 3c giving a certain flexibility to the cap 3 in order to facilitate its positioning in the human acetabulum.

En outre, ladite calotte 3 comprend un ensemble de trous 3d disposés sur des rayons différents permettant le passages de vis de fixation. De plus, sur la périphérie de la paroi externe 3a est établie une zone de réhabilitation de l'os Se, disposée entre le bord Sf de La calotte 3 et la première rangée de trous 3d et constituée par un moletage ou analogue.In addition, said cap 3 comprises a set of 3d holes arranged on different radii allowing the passage of fixing screws. In addition, on the periphery of the external wall 3a is established a rehabilitation area of the bone Se, arranged between the edge Sf of the cap 3 and the first row of holes 3d and constituted by a knurling or the like.

La partie interne 3g de La calotte 3 comporte un cordon annulaire 3k disposé en face de la zone de réhabilitation 3~, c'est-à-dire entre le bord Sf et la première rangée de trous 3 . Un tel cordon 3h permet de retenir le cotyle 2 lorsque L'on a choisi de l'encliqueter dans la calotte hémisphérique creuse 3. The internal part 3g of the cap 3 comprises an annular bead 3k disposed opposite the rehabilitation zone 3 ~, that is to say between the edge Sf and the first row of holes 3. Such a cord 3h allows the cup 2 to be retained when the choice has been made to snap it into the hollow hemispherical cap 3.

On a montré en fig. 3 le cotyle artificiel 2 cimenté dans le cotyle humain 6a de l'os iliaque 6 préparé à cet effet. On s'aperçoit que les rainures 2d disposées sur la périphérie dudit cotyle permettent l'adjonction d'un ciment acrylique afin de réaliser la retenue du cotyle artificiel 2 à l'intérieur du cotyle humain 6a. We have shown in fig. 3 the artificial acetabulum 2 cemented in the human acetabulum 6a of the iliac bone 6 prepared for this purpose. It can be seen that the grooves 2d arranged on the periphery of said acetabulum allow the addition of an acrylic cement in order to carry out the retention of the artificial acetabulum 2 inside the human acetabulum 6a.

En fig. 4, on a illustré la mise en place de la calotte hémisphérique creuse 3 à l'intérieur du cotyle humain 6a et dans laquelle vient s'encliqueter élastiquement le cotyle artificiel 2.  In fig. 4, the placement of the hollow hemispherical cap 3 has been illustrated inside the human acetabulum 6a and into which the artificial acetabulum 2 is snapped in elastically.

La mise en place de la calotte hémi-sphérique creuse 3 dans le coty
Le humain 6a s'effectue de la manière suivante :
On fraise tout d'abord La cavité 6a suivant un diamètre légèrement inférieur à celui de la calotte 3. On introduit ensuite cette dernière dans la cavité aménagée. Cette mise en place entrain sa compression, de sorte qu'elle est maintenue à l'intérieur du cotyle humain 6a par sa simple élasticité, ce qui permet d'ajuster sa mise en place.The placement of the hollow hemispherical cap 3 in the coty
Human 6a is carried out as follows:
The cavity 6a is first of all milled along a diameter slightly smaller than that of the cap 3. The latter is then introduced into the fitted cavity. This positioning results in its compression, so that it is maintained inside the human acetabulum 6a by its simple elasticity, which makes it possible to adjust its positioning.

Lorsque le positionnement est obtenu, on engage des vis de fixation 7 dans les différentes rangées de trous 3~, afin de rendre la calotte hémisphérique creuse 3 solidaire du cotyle humain 6a. When positioning is obtained, engaging fixing screws 7 in the different rows of holes 3 ~, in order to make the hollow hemispherical cap 3 integral with the human acetabulum 6a.

De plus, la zone de réhabilitation 3e dont la surface présente un aspect rugueux permet une repousse de l'os récepteur qui assurera la fixation secondaire biologique de l'implant. In addition, the rehabilitation area 3e whose surface has a rough appearance allows regrowth of the receiving bone which will ensure the secondary biological fixation of the implant.

Ensuite, on vient encliqueter élastiquement le cotyle artificiel 2 à l'intérieur de la calotte hémisphérique creuse 3. L'on observe que les rainures 2d disposées sur La périphérie du cotyle 2 correspondent avec les différentes rangées de trous 3d, si bien que les têtes des vis 7 viennent s'y loger. De plus, au moins une des rainures 2d, avantageusement celle située le plus près du débouché de ta cavité 2a du cotyte 2, coopère avec Le cordon 3h de la calotte 3 afin de retenir ledit cotyle. Then, one comes to snap the artificial cup 2 inside the hollow hemispherical cap 3. It is observed that the grooves 2d arranged on the periphery of the cup 2 correspond with the different rows of holes 3d, so that the heads screws 7 are housed there. In addition, at least one of the grooves 2d, advantageously the one located closest to the opening of your cavity 2a of the cotyte 2, cooperates with the cord 3h of the cap 3 in order to retain said acetabulum.

Cette rainure Sfl est pourvue d'un jonc métallique 8 permettant de vérifier à La radiographie la bonne mise en place du cotyle artificiel 2 à
L'intérieur de la calotte hémisphérique creuse 3.This groove Sfl is provided with a metal rod 8 making it possible to check on radiography the correct positioning of the artificial cup 2 to
The interior of the hollow hemispherical cap 3.

Il doit d'aiLleurs être entendu que la description qui précède n'a été donnée qu'à titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les détails d'exécution décrits par tous autres équivalents.  It should also be understood that the foregoing description has been given only by way of example and that it in no way limits the field of the invention from which one would not depart by replacing the execution details described by all other equivalents.

Claims (4)

R E V E N D I C A T I O N S REVENDICATION sR E V E N D I C A T I O N S CLAIMS 1. Cotyle artificiel permettant la réception de la boule céphalique d'une prothèse fémorale, qui comprend une calotte métallique fixée dans l'os iliaque par des vis et une garniture en matière plastique engagée de force à l'intérieur de ladite calotte, caractérisé en ce que le cotyle artificiel (2) en polyéthylène comporte des moyens permettant d'une part de cimenter ledit cotyle artificiel (2) directement dans l'os iliaque ou d'autre part de l'encliqueter élastiquement dans une calotte hémisphérique creuse (3). 1. Artificial acetabulum allowing the reception of the cephalic ball of a femoral prosthesis, which comprises a metal cap fixed in the iliac bone by screws and a plastic lining forcefully engaged inside said cap, characterized in that the artificial acetabulum (2) in polyethylene comprises means allowing on the one hand to cement said artificial acetabulum (2) directly in the iliac bone or on the other hand to snap it elastically into a hollow hemispherical cap (3) . 2. Cotyle artificiel suivant la revendicaiton 1, caractérisé en ce qu'il comprend sur sa face externe (2c) un certain nombre de rainures de retenue (bd).  2. Artificial acetabulum according to the claim 1, characterized in that it comprises on its external face (2c) a certain number of retaining grooves (bd). 3. Cotyle artificiel suivant la revendication 1, caractérisé en ce que la calotte hémisphérique creuse (3) comprend de chaque côté de son pale, d'une part une série de fentes (3t) orientées en direction de ce pale et dont l'une au moins est débouchante dans un trou excentré (3), et d'autre part un ensemble de trous (3d) disposés sur des rayons différents. 3. artificial acetabulum according to claim 1, characterized in that the hollow hemispherical cap (3) comprises on each side of its blade, on the one hand a series of slots (3t) oriented in the direction of this blade and one of which at least opens out into an eccentric hole (3), and on the other hand a set of holes (3d) arranged on different radii. 4. Cotyle artificiel suivant l'une quelconque des revendications 1, 2 et 3, caractérisé en ce que les rainures (2t) dudit cotyle artificiel (2) correspondent lors de la coopération de ce dernier avec la calotte hémisphérique (3) avec les différentes rangées de trous (3d) de cette dernière afin de former un logement pour les têtes des vis (7) de fixation de ladite calotte.  4. artificial cup according to any one of claims 1, 2 and 3, characterized in that the grooves (2t) of said artificial cup (2) correspond during the cooperation of the latter with the hemispherical cap (3) with the different rows of holes (3d) of the latter in order to form a housing for the heads of the screws (7) for fixing said cap.
FR8909149A 1989-07-03 1989-07-03 COTYLOIDIAN PROSTHESIS IN PLASTICS Expired - Lifetime FR2649005B1 (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0483023A1 (en) * 1990-10-22 1992-04-29 ICP FRANCE, Société Anonyme Acetabular cup
FR2680674A1 (en) * 1991-09-04 1993-03-05 Materiel Chirurgical Ste Inter Cotyloid prosthesis with expandable cup
FR2682588A1 (en) * 1991-10-22 1993-04-23 Lepine Groupe Acetabular implant
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
EP0588022A1 (en) * 1992-09-15 1994-03-23 Waldemar Link (GmbH & Co.) Acetabular cup for a hip joint endoprosthesis
EP0668063A1 (en) * 1993-08-09 1995-08-23 TSCHIRREN & Co. Shell for joint prosthesis, especially hip joint prosthesis and insert for use with the shell
US5549701A (en) * 1993-09-20 1996-08-27 Mikhail; W. E. Michael Acetabular cup
FR2732212A1 (en) * 1995-03-29 1996-10-04 Billet Philippe Cotyloidal cup assembly for hip joint replacement prosthesis
FR2784890A1 (en) * 1998-10-21 2000-04-28 Jean Yves Lazennec Cotyloidal implant for hip joint prosthesis has recesses in insert to receive fixing screw heads
FR2856586A1 (en) * 2003-06-24 2004-12-31 3 S Ortho Cup-shaped hip joint implant, is divided into rigid zone used for fixation at head of hip cavity and flexible, resilient zone
EP1982675A1 (en) * 2005-10-19 2008-10-22 Implant reduction Cup for cotyloidal implant.
EP2198807A1 (en) * 2008-12-18 2010-06-23 Depuy Products, Inc. Orthopaedic prosthesis having a seating indicator
US8403995B2 (en) 2008-12-18 2013-03-26 Depuy Products, Inc. Device and method for determining proper seating of an orthopaedic prosthesis

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GB2126096A (en) * 1982-06-22 1984-03-21 George Kenneth Mckee Improvements in prosthesis
US4566138A (en) * 1983-03-08 1986-01-28 Zimmer, Inc. Prosthetic device with spacers
EP0225819A1 (en) * 1985-10-25 1987-06-16 Etienne Duthoit Acetabular cup for a hip prosthesis without cement
EP0242633A1 (en) * 1986-04-15 1987-10-28 GebràœDer Sulzer Aktiengesellschaft Acetabular cup endoprosthesis for cementless fixation, comprising an inner cup body and an outer shell
US4711233A (en) * 1985-06-26 1987-12-08 Brown Byron L Method and apparatus for cementing an acetabular cup to an acetabulum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126096A (en) * 1982-06-22 1984-03-21 George Kenneth Mckee Improvements in prosthesis
US4566138A (en) * 1983-03-08 1986-01-28 Zimmer, Inc. Prosthetic device with spacers
US4711233A (en) * 1985-06-26 1987-12-08 Brown Byron L Method and apparatus for cementing an acetabular cup to an acetabulum
EP0225819A1 (en) * 1985-10-25 1987-06-16 Etienne Duthoit Acetabular cup for a hip prosthesis without cement
EP0242633A1 (en) * 1986-04-15 1987-10-28 GebràœDer Sulzer Aktiengesellschaft Acetabular cup endoprosthesis for cementless fixation, comprising an inner cup body and an outer shell

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0483023A1 (en) * 1990-10-22 1992-04-29 ICP FRANCE, Société Anonyme Acetabular cup
FR2680674A1 (en) * 1991-09-04 1993-03-05 Materiel Chirurgical Ste Inter Cotyloid prosthesis with expandable cup
FR2682588A1 (en) * 1991-10-22 1993-04-23 Lepine Groupe Acetabular implant
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
EP0588022A1 (en) * 1992-09-15 1994-03-23 Waldemar Link (GmbH & Co.) Acetabular cup for a hip joint endoprosthesis
US5360451A (en) * 1992-09-15 1994-11-01 Waldemar Link Gmbh & Co. Acetabular cup for a hip joint endoprosthesis
US5824107A (en) * 1993-08-09 1998-10-20 Tschirren; Ernst Prosthetic joint cup and insert therefor
EP0668063A1 (en) * 1993-08-09 1995-08-23 TSCHIRREN & Co. Shell for joint prosthesis, especially hip joint prosthesis and insert for use with the shell
US5549701A (en) * 1993-09-20 1996-08-27 Mikhail; W. E. Michael Acetabular cup
FR2732212A1 (en) * 1995-03-29 1996-10-04 Billet Philippe Cotyloidal cup assembly for hip joint replacement prosthesis
FR2784890A1 (en) * 1998-10-21 2000-04-28 Jean Yves Lazennec Cotyloidal implant for hip joint prosthesis has recesses in insert to receive fixing screw heads
FR2856586A1 (en) * 2003-06-24 2004-12-31 3 S Ortho Cup-shaped hip joint implant, is divided into rigid zone used for fixation at head of hip cavity and flexible, resilient zone
EP1982675A1 (en) * 2005-10-19 2008-10-22 Implant reduction Cup for cotyloidal implant.
EP2198807A1 (en) * 2008-12-18 2010-06-23 Depuy Products, Inc. Orthopaedic prosthesis having a seating indicator
EP2335652A1 (en) * 2008-12-18 2011-06-22 DePuy Products, Inc. Orthopaedic prosthesis having a seating indicator
US8075629B2 (en) 2008-12-18 2011-12-13 Depuy Products, Inc. Orthopaedic prosthesis having a seating indicator
US8403995B2 (en) 2008-12-18 2013-03-26 Depuy Products, Inc. Device and method for determining proper seating of an orthopaedic prosthesis
US8747482B2 (en) 2008-12-18 2014-06-10 DePuy Synthes Products, LLC Device and method for determining proper seating of an orthopaedic prosthesis

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