FR2719213A1 - Knee prosthesis tibial implant - Google Patents

Knee prosthesis tibial implant Download PDF

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Publication number
FR2719213A1
FR2719213A1 FR9405495A FR9405495A FR2719213A1 FR 2719213 A1 FR2719213 A1 FR 2719213A1 FR 9405495 A FR9405495 A FR 9405495A FR 9405495 A FR9405495 A FR 9405495A FR 2719213 A1 FR2719213 A1 FR 2719213A1
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FR
France
Prior art keywords
base
plate
implant according
peripheral
arrangements
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Granted
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FR9405495A
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French (fr)
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FR2719213B1 (en
Inventor
Jaeger Jean-Henri
Paternotte Dr Herve
Docteur Bertin Denis
Docteur Simon Patrick
Docteur Schroeder Marcco Henri
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FRANCE MEDICA SA
FII
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FRANCE MEDICA SA
FII
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Priority to FR9405495A priority Critical patent/FR2719213B1/en
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Publication of FR2719213B1 publication Critical patent/FR2719213B1/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
    • A61F2/38—Joints for elbows or knees
    • A61F2/389—Tibial components
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30879—Ribs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit

Abstract

The tibial implant consists of a tibial plate (1) of polyethylene and a metal base (2). The rear portion of the plate has a projection (1c) which is designed to clip together with a matching recess in the base, while its front edge has a lip (1d) which is able to deform elastically and engage with corresponding portions of the base. The underside of the plate has a recess to receive a projection on the base, and it also has a peripheral groove (1b) to engage with the base's outer edge. The recess in the underside of the plate and the corresponding projection on the base are straight in shape and lie perpendicular to and symmetrically with the median axes of the plate and base. In addition, the base is fixed to a stabilising and anchoring member and has holes for fixing screws.

Description

Implant tibial pour prothèse du aenou.Tibial implant for prosthesis of the aenou.

L'invention se rattache au secteur technique des prothèses d'articulation du genou, notamment des prothèses tricompartimentales. Ce type de prothèse comprend, d'une manière parfaitement connue pour un homme du métier, un implant fémoral coopérant avec un  The invention relates to the technical sector of knee joint prostheses, in particular three-compartment prostheses. This type of prosthesis comprises, in a manner perfectly known to a person skilled in the art, a femoral implant cooperating with a

implant tibial.tibial implant.

Plus particulièrement, I'invention concerne l'implant tibial, qui comprend un plateau en polyéthylène monté sur une embase métallique,  More particularly, the invention relates to the tibial implant, which comprises a polyethylene plate mounted on a metal base,

conformée pour être rendue solidaire de la partie réséquée du tibia.  shaped to be secured to the resected part of the tibia.

L'implant fémoral ne fait pas partie de l'objet spécifique de l'invention, et demeure réalisé à la façon connue et peut présenter différentes formes  The femoral implant is not part of the specific object of the invention, and remains produced in the known manner and can have different shapes.

d'exécution en fonction du cas pathologique à traiter.  according to the pathological case to be treated.

Le problème que se propose de résoudre l'invention, est d'améliorer la fixation du plateau tibial sur l'embase. Généralement, le plateau est fixé sur l'embase par des systèmes complémentaires de clipsage ou d'encliquetage. Très souvent, de tels systèmes sont combinés avec des organes rapportés de blocage, par exemple des vis de fixation, afin d'éviter tout risque de luxation du plateau. Ces systèmes d'accouplement ne donnent pas entière satisfaction, car très souvent, l'action d'encliquetage en tant que telle est difficile à réaliser, par manque  The problem which the invention proposes to solve is to improve the fixation of the tibial plateau on the base. Generally, the plate is fixed to the base by complementary clipping or snapping systems. Very often, such systems are combined with added blocking members, for example fixing screws, in order to avoid any risk of dislocation of the tray. These coupling systems are not entirely satisfactory, because very often the latching action as such is difficult to perform, for lack

d'élasticité, des agencements complémentaires.  elasticity, complementary arrangements.

Inversement, si les agencements complémentaires permettent un encliquetage aisé, des risques importants de luxation du plateau apparaissent, sous les efforts encaissés lors des mouvements de  Conversely, if the complementary arrangements allow an easy snap-on, significant risks of dislocation of the plate appear, under the forces absorbed during the movements of

l'articulation du genou.the knee joint.

L'invention s'est fixée pour but de remédier à ces  The object of the invention is to remedy these

inconvénients, de manière simple, sûre, efficace et rationnelle.  disadvantages, in a simple, safe, effective and rational way.

Le problème que se propose de résoudre l'invention, est d'améliorer ce type de fixation par encliquetage ou clipsage, sans faire appel à un organe rapporté de blocage, du type vis, en ayant pour objectif d'éviter tout mouvement postéro-antérieur, notamment dans le cas d'une  The problem which the invention proposes to solve is to improve this type of fastening by snap-fastening or clipping, without using an attached blocking member, of the screw type, with the aim of avoiding any postero-anterior movement. , especially in the case of a

prothèse postéro-stabilisée.postero-stabilized prosthesis.

Pour résoudre un tel problème, le plateau tibial présente - du côté de son bord postérieur, des agencements de clipsage aptes à coopérer avec des agencements complémentaires d'un rebrod périphérique que présente l'embase, - du côté de son bord antérieur, une lèvre avec capacité de déformation élastique apte à coopérer avec des agencements complémentaires du rebord périphérique, - à partir de sa face de dessous, une empreinte en creux apte à être engagée sur une empreinte en relief formée en débordement de I'embase, - une gorge périphérique apte à coopérer avec le rebord  To solve such a problem, the tibial plateau has - on the side of its posterior edge, clipping arrangements capable of cooperating with complementary arrangements of a peripheral rebrod presented by the base, - on the side of its anterior edge, a lip with capacity for elastic deformation capable of cooperating with complementary arrangements of the peripheral rim, - from its underside, a recess imprint capable of being engaged on a raised impression formed in overflow of the base, - a peripheral groove able to cooperate with the ledge

périphérique de l'embase.peripheral device.

Pour résoudre le problème posé d'éviter tout mouvement postéro-antérieur du plateau par rapport à l'embase, les empreintes en creux et en relief sont rectilignes et formées perpendiculairement et symétriquement à l'axe médian du plateau et de l'embase, en étant de  To solve the problem posed of avoiding any postero-anterior movement of the plate relative to the base, the hollow and raised imprints are rectilinear and formed perpendicular and symmetrically to the median axis of the plate and of the base, in being from

longueur réduite.reduced length.

L'empreinte en relief constitue un talon de butée et présente, du côté postérieur de l'embase, un rebord arrondi. Le fond de l'empreinte  The raised impression constitutes a stop heel and has, on the rear side of the base, a rounded edge. The bottom of the imprint

en creux est arrondi et présente transversalement, des faces inclinées.  in the hollow is rounded and has transversely inclined faces.

Pour résoudre le problème posé de faciliter le clipsage, tout en ayant pour objectif d'obtenir un accouplement sûr et efficace, la lèvre déformable élastiquement présente un bourrelet semi-circulaire coopérant avec une gorge de forme complémentaire formée à la base du rebord  To solve the problem of facilitating clipping, while having the objective of obtaining a safe and effective coupling, the elastically deformable lip has a semi-circular bead cooperating with a groove of complementary shape formed at the base of the rim

périphérique de I'embase.peripheral device.

Les agencements de clipsage du plateau sont constitués par un bourrelet semi-circulaire coopérant avec une gorge de forme  The plate clipping arrangements consist of a semicircular bead cooperating with a shaped groove

complémentaire formée à la base du rebord périphérique de l'embase.  complementary formed at the base of the peripheral edge of the base.

L'invention est exposée, ci-après plus en détail à l'aide des dessins annexés, dans lesquels:  The invention is set out below in more detail using the appended drawings, in which:

La figure 1 est une vue de dessous du plateau.  Figure 1 is a bottom view of the tray.

La figure 2 est une vue de dessus du plateau.  Figure 2 is a top view of the tray.

La figure 3 est une vue en coupe transversale considérée  Figure 3 is a cross-sectional view considered

selon la ligne B.B de la figure 2.along line B.B in Figure 2.

La figure 4 est, à une échelle plus importante, une vue  Figure 4 is, on a larger scale, a view

en coupe transversale considérée selon la ligne A.A de la figure 3.  in cross section seen along line A.A in Figure 3.

La figure 5 est une vue de dessus de l'embase.  Figure 5 is a top view of the base.

La figure 6 est une vue de dessous de l'embase.  Figure 6 is a bottom view of the base.

La figure 7 est une vue en coupe transversale,  FIG. 7 is a cross-sectional view,

considérée selon la ligne A.A de la figure 5.  considered along line A.A of FIG. 5.

La figure 8 est, à une échelle plus importante, une vue en  Figure 8 is, on a larger scale, a view in

coupe considérée selon la ligne B.B de la figure 7.  section considered along line B.B in Figure 7.

La figure 9 est une vue montrant l'accouplement du  Figure 9 is a view showing the coupling of the

plateau sur l'embase.tray on the base.

La figure 10 est une vue en coupe considérée selon la  Figure 10 is a sectional view taken along the

ligne 10.10 de la figure 9.line 10.10 of figure 9.

L'implant comprend de manière connue, un plateau en polyéthylène (1) et une embase métallique (2). Le plateau (1) et I'embase (2) présentent, vue en plan, tout profil approprié, avec ou non une échancrure médiane (la) (2a), pour le passage des ligaments croisés postérieurs. Selon l'invention, le plateau (1) présente une gorge périphérique (lb), apte à coopérer avec un rebord périphérique (2b), que présente l'embase (2). La gorge (lb) présente, du côté du bord postérieur du plateau (1), des agencements de clipsage (lc) coopérant avec des agencements complémentaires (2c) du rebord périphérique (2b). Les agencements de clipsage (lc) du plateau sont constitués par un bourrelet semi- circulaire (lcl), coopérant avec une gorge de forme complémentaire  The implant comprises, in known manner, a polyethylene plate (1) and a metal base (2). The plate (1) and the base (2) have, in plan view, any suitable profile, with or without a median notch (la) (2a), for the passage of the posterior cruciate ligaments. According to the invention, the plate (1) has a peripheral groove (lb), capable of cooperating with a peripheral rim (2b), which has the base (2). The groove (lb) has, on the side of the rear edge of the plate (1), clipping arrangements (lc) cooperating with complementary arrangements (2c) of the peripheral rim (2b). The clipping arrangements (lc) of the plate consist of a semicircular bead (lcl), cooperating with a groove of complementary shape

(2c1), formé à la base du rebord périphérique (2b) de l'embase.  (2c1), formed at the base of the peripheral rim (2b) of the base.

Suivant une autre caractéristique, la gorge (1b) présente, du côté du bord antérieur du plateau (1), une lèvre (ld), avec capacité de  According to another characteristic, the groove (1b) has, on the side of the front edge of the plate (1), a lip (ld), with the capacity to

déformation élastique. Cette lèvre (ld) présente un bourrelet semi-  elastic deformation. This lip (ld) has a semi-bead

circulaire (ldl) apte à être engagé dans une gorge de forme complémentaire (2d), formée à la base du rebord périphérique (2b) de l'embase. D'une manière importante, la face de dessous du plateau (1) présente une empreinte en creux (le), apte à être engagée sur une empreinte en relief (2e), formée en débordement de l'embase (2). Les empreintes en creux (le) et en relief (2e), sont formés perpendiculairement  circular (ldl) able to be engaged in a groove of complementary shape (2d), formed at the base of the peripheral rim (2b) of the base. Importantly, the underside of the plate (1) has a hollow imprint (le), capable of being engaged on a raised imprint (2e), formed in overflow from the base (2). The hollow (le) and raised (2e) imprints are formed perpendicularly

et symétriquement à l'axe médian (XX'), du plateau (1) et de l'embase (2).  and symmetrically to the median axis (XX '), of the plate (1) and of the base (2).

Les empreintes (le) et (2e) sont de longueur réduite. L'empreinte en creux (le) du plateau, présente un fond arrondi (1 el) et deux faces transversales inclinées (1e2) et (1e3). L'empreinte en relief (2e) constitue un talon de butée et présente, du côté du bord postérieur de l'embase, un rebord  The footprints (le) and (2e) are of reduced length. The hollow imprint (le) of the tray has a rounded bottom (1 el) and two inclined transverse faces (1e2) and (1e3). The raised impression (2e) constitutes a stop heel and has, on the side of the rear edge of the base, a rim

arrondi (2e1).rounded (2e1).

Ces dispositions permettent d'assurer un accouplement particulièrement sûre et efficace du plateau (1) sur l'embase (2). Après engagement du côté postérieur des agencements (lc) dans les agencements (2c), il suffit d'exercer un effort de pression, au niveau de la lèvre (ld) qui, par élasticité, est escamotée puis automatiquement logée dans la gorge correspondante (2d). L'empreinte en creux (le) est en butée contre le talon (2e) (figure 9), évitant tout mouvement postéro- antérieur. Il apparait donc que tous les efforts sont  These provisions ensure a particularly safe and efficient coupling of the plate (1) on the base (2). After engagement of the rear side of the arrangements (lc) in the arrangements (2c), it suffices to exert a pressure force, at the level of the lip (ld) which, by elasticity, is retracted then automatically housed in the corresponding groove ( 2d). The indentation (le) abuts against the heel (2e) (Figure 9), avoiding any postero-anterior movement. It therefore appears that all efforts are

encaisssés au niveau du talon (2e), et non pas au niveau de la languette.  collected at the heel (2e), and not at the tongue.

Ce blocage mécanique s'avère particulièrement important, dans le cas  This mechanical blocking is particularly important, in the case

d'une prothèse postéro-stabilisée.  a postero-stabilized prosthesis.

A noter que la combinaison des faces pentées de la fente (le) et du bord arrondi du talon (2e), facilite leur engagement lors du  Note that the combination of the sloping faces of the slit (the) and the rounded edge of the heel (2e) facilitates their engagement during the

pivotement angulaire du plateau, pour son clipsage sur l'embase.  angular pivoting of the plate, for its clipping on the base.

Bien évidemment, le plateau (1) présente tout profil pour permettre l'appui et le glissement des patins condyliens de l'implant fémoral. De même, le plateau (1) peut présenter, très sensiblement dans sa partie médiane, tout agencement sous forme, par exemple, d'un  Obviously, the plate (1) has any profile to allow the support and the sliding of the condylar pads of the femoral implant. Similarly, the plate (1) can have, very substantially in its middle part, any arrangement in the form, for example, of a

bossage profilé, dans le cas d'une postéro-stabilisée.  profiled boss, in the case of a postero-stabilized.

En ce qui concerne l'embase (2), cette dernière présente également tout type d'agencement pour sa fixation au niveau de la partie réséquée du tibia. Par exemple, I'embase peut recevoir une quille de stabilité et d'ancrage (3). De même, I'embase peut présenter différents  With regard to the base (2), the latter also has any type of arrangement for its attachment to the level of the resected part of the tibia. For example, the base can receive a stability and anchoring keel (3). Similarly, the base may have different

trous (2f), pour l'engagement de vis, de tout type connu et approprié.  holes (2f), for screw engagement, of any known and appropriate type.

Les avantages ressortent bien de la description.  The advantages are apparent from the description.

Claims (8)

REVENDICATIONS -1- Implant tibial pour prothèse du genou, notamment tricompartimentale comprenant un plateau tibial en polyéthylène (1) et une embase métallique (2), caractérisé en ce que le plateau (1) présente: - du côté de son bord postérieur, des agencements de clipsage (1lc) aptes à coopérer avec des agencements complémentaires (2c) d'un rebrod périphérique (2b) que présente l'embase (2), - du côté de son bord antérieur, une lèvre (ld) avec capacité de déformation élastique apte à coopérer avec des agencements complémentaires (2d) du rebord périphérique (2b), - à partir de sa face de dessous, une empreinte en creux (le) apte à être engagée sur une empreinte en relief (2e) formée en débordement de l'embase (2), - une gorge périphérique (lb) apte à coopérer avec le rebord  -1- Tibial implant for knee prosthesis, in particular tricompartmental comprising a tibial polyethylene plate (1) and a metal base (2), characterized in that the plate (1) has: - on the side of its posterior edge, arrangements of clipping (1lc) able to cooperate with complementary arrangements (2c) of a peripheral rebrod (2b) that has the base (2), - on the side of its front edge, a lip (ld) with elastic deformation capacity able to cooperate with complementary arrangements (2d) of the peripheral rim (2b), - from its underside, a hollow imprint (le) capable of being engaged on a relief imprint (2e) formed in overflow from the 'base (2), - a peripheral groove (lb) able to cooperate with the rim périphérique (2b) de l'embase (2).  peripheral (2b) of the base (2). -2- Implant selon la revendication 1, caractérisé en ce que les empreintes en creux (le) et en relief (2e) sont rectilignes et formées perpendiculairement et symétriquement à l'axe médian du plateau (1) et  -2- Implant according to claim 1, characterized in that the indentations (the) and in relief (2e) are rectilinear and formed perpendicular and symmetrically to the median axis of the plate (1) and de l'embase (2), en étant de longueur réduite.  of the base (2), being of reduced length. -3- Implant selon la revendication 2, caractérisé en ce que l'empreinte en relief (2e) constitue un talon de butée et présente, du côté postérieur de  -3- Implant according to claim 2, characterized in that the raised impression (2e) constitutes a stop heel and has, on the posterior side of l'embase (2), un rebord arrondi.the base (2), a rounded edge. -4- Implant selon la revendication 1, caractérisé en ce que le fond de l'empreinte en creux (le) est arrondi et présente transversalement, des  -4- Implant according to claim 1, characterized in that the bottom of the hollow imprint (the) is rounded and has transversely, faces inclinées.inclined faces. -5- Implant selon la revendication 1, caractérisé en ce que la lèvre (ld) déformable élastiquement présente un bourrelet semi-circulaire (1d1) coopérant avec une gorge (2d) de forme complémentaire formée à la base  -5- Implant according to claim 1, characterized in that the elastically deformable lip (ld) has a semi-circular bead (1d1) cooperating with a groove (2d) of complementary shape formed at the base du rebord périphérique de l'embase (2.  of the peripheral edge of the base (2. -6- Implant selon la revendication 1, caractérisé en ce que les  -6- Implant according to claim 1, characterized in that the agencements de clipsage du plateau sont constitués par un bourrelet semi-  tray clipping arrangements consist of a semi-bead circulaire (lc) coopérant avec une gorge (2c) de forme complémentaire  circular (lc) cooperating with a groove (2c) of complementary shape formée à la base du rebord périphérique de l'embase (2).  formed at the base of the peripheral rim of the base (2). -7- Implant selon la revendication 1, caractérisé en ce que l'embase (2) est  -7- Implant according to claim 1, characterized in that the base (2) is solidaire d'une quille de stabilité et d'ancrage (3).  secured to a stability and anchoring keel (3). -8- Implant selon la revendication 1, caractérisé en ce que l'embase (2) présente des trous (2f) disposés symétriquement pour l'engagement de vis  -8- Implant according to claim 1, characterized in that the base (2) has holes (2f) arranged symmetrically for the engagement of screws de fixation.of fixation.
FR9405495A 1994-04-27 1994-04-27 Tibial implant for knee prosthesis. Expired - Fee Related FR2719213B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9405495A FR2719213B1 (en) 1994-04-27 1994-04-27 Tibial implant for knee prosthesis.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9405495A FR2719213B1 (en) 1994-04-27 1994-04-27 Tibial implant for knee prosthesis.

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FR2719213A1 true FR2719213A1 (en) 1995-11-03
FR2719213B1 FR2719213B1 (en) 1996-06-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012095879A1 (en) 2011-01-14 2012-07-19 Forti Maurizio Non- cemented tibial component for knee prosthesis implant
WO2014029928A1 (en) * 2012-08-24 2014-02-27 Anatomic Prosthetic tibial base, and prosthetic tibial insert which is to be immobilized on such a prosthetic tibial base

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4963152A (en) * 1986-10-27 1990-10-16 Intermedics Orthopedics, Inc. Asymmetric prosthetic tibial component
EP0495340A1 (en) * 1991-01-18 1992-07-22 Gebrüder Sulzer Aktiengesellschaft Modular construction kit for the tibial part of a knee joint prosthesis
EP0512529A1 (en) * 1991-05-09 1992-11-11 DePuy Inc. Prosthetic implant locking assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4963152A (en) * 1986-10-27 1990-10-16 Intermedics Orthopedics, Inc. Asymmetric prosthetic tibial component
EP0495340A1 (en) * 1991-01-18 1992-07-22 Gebrüder Sulzer Aktiengesellschaft Modular construction kit for the tibial part of a knee joint prosthesis
EP0512529A1 (en) * 1991-05-09 1992-11-11 DePuy Inc. Prosthetic implant locking assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012095879A1 (en) 2011-01-14 2012-07-19 Forti Maurizio Non- cemented tibial component for knee prosthesis implant
WO2014029928A1 (en) * 2012-08-24 2014-02-27 Anatomic Prosthetic tibial base, and prosthetic tibial insert which is to be immobilized on such a prosthetic tibial base
FR2994644A1 (en) * 2012-08-24 2014-02-28 Anatomic PROTHETIC TIBIAL PLUG AND TIBIAL PROTHETIC INSERT FOR IMMOBILIZATION ON SUCH PROTHETIC TIBIAL PLUG
US9480569B2 (en) 2012-08-24 2016-11-01 Anatomic Prosthetic tibial base, and prosthetic tibial insert intended to be immobilized on such a prosthetic tibial base

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