FR2730157A1 - Joint construction for ankle replacement prosthesis - Google Patents

Joint construction for ankle replacement prosthesis Download PDF

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Publication number
FR2730157A1
FR2730157A1 FR9501429A FR9501429A FR2730157A1 FR 2730157 A1 FR2730157 A1 FR 2730157A1 FR 9501429 A FR9501429 A FR 9501429A FR 9501429 A FR9501429 A FR 9501429A FR 2730157 A1 FR2730157 A1 FR 2730157A1
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component
sliding
surface
anchor
surfaces
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FR9501429A
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French (fr)
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FR2730157B1 (en )
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Bouvet Jean Claude
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/42Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4202Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for ankles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30159Concave polygonal shapes
    • A61F2002/30176V-shaped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/3039Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
    • A61F2002/30398Sliding
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604Special structural features of bone or joint prostheses not otherwise provided for modular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves
    • A61F2002/30878Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30879Ribs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/42Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4202Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for ankles
    • A61F2002/4205Tibial components
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/42Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4202Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for ankles
    • A61F2002/4207Talar components
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4631Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028Shapes in the form of latin or greek characters
    • A61F2230/0054V-shaped

Abstract

The prosthesis has an intermediate component (10) with sliding surfaces which fits between a first anchor component (20) secured to the bottom of the tibia and a second anchor component (30) fixed to the top of the astragal bone. The lower sliding surface (34) of the intermediate component is convex and corresponds exactly to the upper concave surface of the second anchor component. These interacting sliding surfaces are defined as surfaces of revolution about an axis (40), such that they define a cross-section having a rounded V-shaped configuration. The upper sliding surface of the intermediate component and the corresponding lower surface of the first anchor component are flat, with a central tenon and groove (51-53) defining a straight guideway.

Description

La présente invention concerne les prothèses tibio-tarsiennes, plus communément les prothèses pour restaurer l'articulation de la cheville entre le tibia et le péroné d'une part, et l'astragale d'autre part. The present invention relates to ankle joint prosthesis, more commonly prostheses to restore the ankle joint between the tibia and fibula one hand, and on the other hand talus.

On connait déjà des prothèses tibio-tarsiennes, plus communément prothèses de cheville permettant de restaurer l'articulation entre le tibia et le péroné d'une part, et l'astragale d'autre part. We already know of the ankle joint prostheses, commonly ankle prostheses to restore the joint between the tibia and fibula of a hand and the other hand astragalus.

Une telle prothèse est par exemple décrite dans le FR-A-2 676 917. Such a prosthesis is described for example in FR-A-2676917.

Cette prothèse comporte essentiellement une pièce intermédiaire comportant, sur deux côtés opposés, une première et une deuxième faces de glissement, une première pièce comportant une troisième face apte à coopérer par glissement avec la première face, des moyens pour fixer la première pièce avec l'extrémité inférieure (distale) du tibia, une seconde pièce comportant une quatrième face apte à coopérer par glissement avec la deuxième face, les deuxième et quatrième faces de glissement étant des surfaces congruentes, et des moyens pour fixer la seconde pièce au sommet de l'astragale. This prosthesis essentially includes an intermediate piece comprising, on two opposite sides, first and second sliding surfaces, a first part having a third face adapted to cooperate by sliding with the first face, means for fixing the first part with the lower (distal) end of the tibia, a second part having a fourth face capable of cooperating by sliding with the second face, the second and fourth sliding faces being congruent surfaces, and means for fixing the second piece at the top of the astragalus.

La prothèse décrite ci-dessus ne répond pas toujours aux conditions anatomiques de l'articulation originelle de la cheville et peut dans certains cas présenter des inconvénients. The prosthesis described above does not always meet the anatomical conditions of the original joint of the ankle and may in some cases have disadvantages.

La présente invention a ainsi pour but de réaliser une prothèse tibio-tarsienne, plus communément appelée prothèse de cheville, permettant de restaurer l'articulation entre le tibia et le péroné d'une part, et l'astragale d'autre part, qui réponde le plus parfaitement possible aux conditions morphologiques de l'articulation originelle de la cheville chez l'être humain, tout en présentant une structure relativement simple. The present invention is thus to achieve an ankle prosthesis, commonly referred ankle prosthesis, to restore the joint between the tibia and fibula one hand, and on the other hand talus that responds as perfectly as possible to the morphological conditions of the original ankle joint in humans, while having a relatively simple structure.

Plus précisément, la présente invention a pour objet une prothèse tibio-tarsienne, plus communément appelée prothèse de cheville, permettant de restaurer l'articulation entre le tibia et le péroné d'une part, et l'astragale d'autre part, comportant: More specifically, the present invention provides an ankle prosthesis, commonly referred ankle prosthesis, to restore the joint between the tibia and fibula one hand, and on the other hand astragalus, comprising:
- une pièce intermédiaire comportant, sur deux côtés opposés, une première et une deuxième faces de glissement, - an intermediate part comprising on two opposite sides, first and second sliding surfaces,
- une première pièce comportant une troisième face apte à coopérer par glissement avec ladite première face, - a first part having a third face adapted to cooperate by sliding with said first face,
- des premiers moyens pour fixer ladite première pièce avec l'extrémité inférieure du tibia, - first means for securing said first member with the lower end of the tibia,
- une seconde pièce comportant une quatrième face apte à coopérer par glissement avec ladite deuxième face, et - a second part having a fourth face capable of cooperating by sliding with said second face, and
- des seconds moyens pour fixer ladite seconde pièce au sommet de - second means for securing said second piece at the top of
I'astragale, caractérisée par le fait que lesdites deuxième et quatrième faces de glissement sont des surfaces congruentes respectivement convexe et concave. I'astragale, characterized in that said second and fourth slide faces are congruent surfaces convex and concave respectively.

D'autres caractéristiques et avantages de la présente invention apparaitront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif, mais nullement limitatif, dans lesquels: Other features and advantages of the present invention appear from the following description given in the appended drawings of illustration, but not limitation, in which:
Les figures 1 et 2 représentent respectivement une vue de côté et une vue de dessus d'un mode de réalisation d'une prothèse de cheville selon l'invention, Figures 1 and 2 show respectively a side view and a top view of one embodiment of an ankle prosthesis according to the invention,
La figure 3 représente une vue en coupe référencée 111-111 sur les figures 1 et 2, de la prothèse de cheville selon le mode de réalisation illustré sur les figures 1 et 2, et 3 shows a sectional view referenced by 111-111 in Figures 1 and 2, the ankle prosthesis according to the embodiment illustrated in Figures 1 and 2, and
La figure 4 représente une vue de face du mode de réalisation de la prothèse de cheville selon les figures 1 à 3 lorsqu'elle est implantée entre le tibia, le péroné et l'astragale du corps humain. 4 shows a front view of the embodiment of the ankle prosthesis according to Figures 1 to 3 when implanted between the tibia, fibula and the talus of the human body.

Les figures représentant un même mode de réalisation d'une prothèse de cheville selon l'invention, les mêmes références y désignent les mêmes éléments, quelle que soit la figure sur laquelle elles apparaissent. Figures representing one embodiment of an ankle prosthesis according to the invention, the same references designate the same elements are, regardless of the figure in which they appear.

La prothèse 1 illustrée concerne une prothèse tibio-tarsienne, plus communément appelée prothèse de cheville, qui permet de restaurer l'articulation entre le tibia 2 et le péroné 3 d'une part, et l'astragale 4 d'autre part, comme illustré sur la figure 4. The prosthesis 1 shown relates to an ankle prosthesis, commonly referred ankle prosthesis which enables to restore the joint between the tibia and fibula 2 3 one hand, and astragalus 4 on the other hand, as shown Figure 4.

Cette prothèse comporte une pièce intermédiaire 10 intercalée entre une première pièce 20 et une seconde pièce 30 aptes à être implantées respectivement à l'extrémité inférieure 5 du tibia 2 et au sommet 6 de l'astragale 4. This prosthesis comprises an intermediate piece 10 interposed between a first part 20 and second part 30 adapted to be located respectively at the lower end 5 of the tibia 2 and 6 at the top of the talus 4.

La pièce intermédiaire 10 comporte, sur deux côtés opposés, une première 11 et une deuxième 12 faces de glissement, la première pièce 20 comportant une troisième face 23 apte à coopérer par glissement avec la première face 11 et la seconde pièce 30 comportant une quatrième face 34 apte à coopérer par glissement avec la deuxième face 12. The intermediate piece 10 has, on two opposite sides, a first 11 and second 12 sliding surfaces, the first part 20 having a third surface 23 adapted to cooperate by sliding with the first face 11 and second part 30 having a fourth face 34 capable of cooperating by sliding with the second face 12.

Il est bien entendu prévu des premiers moyens 21 pour fixer la première pièce 20 sur l'extrémité inférieure 5 du tibia 2. Ces premiers moyens de fixation peuvent par exemple être constitués, comme illustré, d'une partie en saillie 25 solidaire de la première pièce. It is of course provided first means 21 for securing the first piece 20 on the lower end 5 of the tibia 2. These first attachment means may for example be constituted, as illustrated, with a projecting portion 25 integral with the first piece. Cette partie en saillie s'implante dans une rainure complémentaire réalisée à l'extrémité inférieure 5 du tibia 2 et peut y être maintenue à l'aide d'un ciment ou analogue. This projecting portion is implanted in a complementary groove formed at the lower end 5 of the tibia 2 and can be maintained by means of a cement or the like.

Sont également prévus des seconds moyens 31 pour fixer la seconde pièce 30 au sommet 6 de l'astragale 4. Ces seconds moyens de fixation sont par exemple constitués par la face 35 de cette seconde pièce 30 opposée à la quatrième face 34, qui vient s'ancrer dans l'astragale et y est maintenue avec par exemple un ciment ou analogue. Are also provided second means 31 for fixing the second piece 30 at the top 6 of the talus 4. These second attachment means are for example constituted by the face 35 of the second part 30 opposed to the fourth face 34, which comes s anchor in the talus and held there for example with a cement or the like.

Selon une autre caractéristique de la présente invention, les deuxième 12 et quatrième 34 faces de glissement sont des surfaces congruentes respectivement convexe et concave. According to another feature of the present invention, THE SECOND 12 and fourth 34 sliding faces are congruent surfaces convex and concave respectively. Elles sont en outre définies comme des surfaces d'appui de révolution autour d'un axe 40 et, comme illustré sur les figures 3 et 4, présentent une section 41, définie dans un plan contenant cet axe de révolution 40, sensiblement en forme de "V". They are further defined as support surfaces of revolution about an axis 40 and, as illustrated in Figures 3 and 4, have a section 41, defined in a plane containing this axis of revolution 40, substantially shaped "V".

La seconde pièce 30 peut être rigidifiée au moyen d'une nervure 36 formant saillie sur sa face 35 opposée à la quatrième face de glissement 34. The second part 30 can be stiffened by means of a rib 36 projecting from its opposite face 35 to the fourth sliding surface 34.

Dans un mode de réalisation avantageux comme illustré sur les figures, cette nervure est sensiblement située dans le plan de symétrie 45 de la forme en "V" définie ci-dessus. In an advantageous embodiment as illustrated in the figures, this rib is located substantially in the plane of symmetry 45 of the form "V" defined above. Elle constitue en plus une partie des seconds moyens de fixation 31 de la seconde pièce 30 au sommet 6 de l'astragale 4. It is in addition a part of the second fastening means 31 of the second part 30 at the top 6 of the talus 4.

En outre, dans un mode de réalisation avantageux, les première et troisième faces de glissement sont définies dans des surfaces sensiblement planes et la prothèse de cheville 1 comporte des moyens de guidage en translation 50 de la pièce intermédiaire 10 par rapport à la première pièce 20. Furthermore, in an advantageous embodiment, the first and third sliding surfaces are defined in substantially flat surfaces and the ankle prosthesis 1 comprises translational guide means 50 of the intermediate piece 10 relative to the first workpiece 20 .

Ces moyens de guidage peuvent être de toute forme mais avantageusement constitués, par exemple, par une glissière rectiligne 51 à emboîtement du type mâle-femelle. These guide means may be of any shape but advantageously constituted, for example, by a rectilinear slide 51 of the interlocking male-female type. Dans le mode de réalisation illustré, la partie mâle 52 et la partie femelle 53 de l'emboîtement mâle-femelle sont respectivement réalisées sur la troisième face 23 de la première pièce 20 et sur la première face 1 1 de la pièce intermédiaire 10. In the illustrated embodiment, the male part 52 and female part 53 of the male-female fitting are respectively formed on the third face 23 of the first part 20 and on the first side 1 1 of the intermediate piece 10.

De plus, la pièce intermédiaire 10 est avantageusement réalisée dans un matériau présentant une dureté inférieure à celles des matériaux dans lesquels sont réalisées les troisième et quatrième faces 23 et 34 respectivement des première et seconde pièces 20 et 30. In addition, the intermediate part 10 is advantageously made of a material having a lower hardness than the materials from which are formed the third and fourth sides 23 and 34 respectively of the first and second parts 20 and 30.

L'implantation de la prothèse de cheville 1 décrite ci-dessus entre le tibia, le péroné et l'astragale du corps humain ne présente aucune difficulté pour un praticien habitué à pratiquer ce type d'intervention chirurgicale. The implantation of the ankle prosthesis 1 described above between the tibia, fibula and the talus of the human body presents no difficulties for a regular practitioner to practice this type of surgery. La figure 4 explicite à elle seule la technique de mise en place de la prothèse et illustre le fait que cette implantation est relativement peu destructrice des os concernés. 4 explains alone the establishment of technical prosthesis and illustrates that this implementation is relatively destructive bone concerned.

Outre le fait qu'elle soit d'une structure très simple, et donc facile à réaliser et à implanter, la prothèse de cheville selon l'invention permet de restaurer parfaitement l'articulation de la cheville et en toute fiabilité. Besides the fact that it is a very simple structure, and therefore easy to carry out and implement, ankle prosthesis of the invention can perfectly restore the ankle joint and reliably. Par le glissement de la pièce intermédiaire 10 sur la troisième face plane 23 et sur la quatrième face courbe 34 dite "en aile de mouette" respectivement de la première et de la seconde pièces, elle restitue en effet tous les mouvements d'origine du pied par rapport au tibia et au péroné. By the sliding of the intermediate part 10 of the third flat face 23 and on the fourth curved face 34 called "gullwing" of the first and second parts respectively, it restores indeed all the original foot movements with respect to the tibia and fibula. De plus, la pièce intermédiaire 10 est parfaitement maintenue en place et emprisonnée entre les première et seconde pièces 20 et 30, mais aussi entre les malléoles interne 7 du tibia et péronière 8. In addition, the intermediate part 10 is held securely in place and trapped between the first and second parts 20 and 30, but also between the internal malleoli 7 of the tibia and fibula 8.

Claims (9)

    RIEVENDICA I IONS I RIEVENDICA ION
  1. 1. Prothèse tibio-tarsienne, plus communément appelée prothèse de cheville (1), permettant de restaurer l'articulation entre le tibia (2) et le péroné (3) d'une part, et l'astragale (4) d'autre part, comportant: 1. A prosthesis ankle, commonly referred ankle prosthesis (1), to restore the joint between the tibia (2) and fibula (3) on the one hand, and the astragalus (4) on the other part, comprising:
    - une pièce intermédiaire (10) comportant, sur deux côtés opposés, une première (11) et une deuxième (12) faces de glissement, - an intermediate piece (10) having, on two opposite sides, a first (11) and second (12) sliding faces,
    - une première pièce (20) comportant une troisième face (23) apte à coopérer par glissement avec ladite première face (11), - a first part (20) having a third face (23) adapted to cooperate by sliding with said first face (11),
    - des premiers moyens (21) pour fixer ladite première pièce (20) avec l'extrémité inférieure (5) du tibia (2), - first means (21) for fixing said first piece (20) with the lower end (5) of the tibia (2),
    - une seconde pièce (30) comportant une quatrième face (34) apte à coopérer par glissement avec ladite deuxième face (12), et - a second part (30) having a fourth face (34) adapted to cooperate by sliding with said second face (12), and
    - des seconds moyens (31) pour fixer ladite seconde pièce (30) au sommet (6) de l'astragale (4), caractérisée par le fait que lesdites deuxième (12) et quatrième (34) faces de glissement sont des surfaces congruentes respectivement convexe et concave. - second means (31) for securing said second piece (30) at the apex (6) of the astragalus (4), characterized in that said second (12) and fourth (34) sliding faces are congruent surfaces respectively convex and concave.
  2. 2. Prothèse selon la revendication 1, caractérisée par le fait que lesdites deuxième (12) et quatrième (34) faces de glissement sont définies comme des surfaces d'appui de révolution autour d'un axe (40) et présentent une section (41), définie dans un plan contenant ledit axe de révolution (40), sensiblement en forme de "V" (fig. 3 et 4). 2. A prosthesis according to claim 1, characterized in that said second (12) and fourth (34) sliding faces are defined as bearing surfaces of revolution about an axis (40) and have a section (41 ), defined in a plane containing said axis of revolution (40), substantially in the shape of "V" (fig. 3 and 4).
  3. 3. Prothèse selon l'une des revendications 1 et 2, caractérisée par le fait que lesdites première et troisième faces de glissement (11, 23) sont définies dans des surfaces sensiblement planes. 3. A prosthesis according to one of claims 1 and 2, characterized in that said first and third slide surfaces (11, 23) are defined in substantially flat surfaces.
  4. 4. Prothèse selon la revendication 3, caractérisée par le fait qu'elle comporte des moyens de guidage en translation (50) de ladite pièce intermédiaire (10) par rapport à ladite première pièce (20). 4. Prosthesis according to claim 3, characterized in that it comprises the translational guide means (50) of said intermediate piece (10) relative to said first part (20).
  5. 5. Prothèse selon la revendication 4, caractérisée par le fait que lesdits moyens de guidage (50) sont constitués par une glissière rectiligne (51) à emboîtement mâle-femelle (52, 53). 5. A prosthesis according to claim 4, characterized in that said guide means (50) are constituted by a rectilinear rail (51) male-female fitting (52, 53).
  6. 6. Prothèse selon la revendication 5, caractérisée par le fait que la partie mâle (52) et la partie femelle (53) dudit emboîtement mâle-femelle sont respectivement réalisées sur la troisième face de glissement (23) de la première pièce (20) et sur la première face de glissement (11) de la pièce intermédiaire (10). 6. A prosthesis according to claim 5, characterized in that the male part (52) and the female part (53) of said male-female fitting are respectively formed on the third sliding surface (23) of the first part (20) and on the first sliding face (11) of the intermediate piece (10).
  7. 7. Prothèse selon l'une des revendications 2 à 6, caractérisée par le fait qu'elle comporte au moins une nervure de rigidification (36). 7. A prosthesis according to one of Claims 2 to 6, characterized in that it comprises at least one stiffening rib (36).
  8. 8. Prothèse selon la revendication 7, caractérisée par le fait que ladite nervure de rigidification (36) forme saillie sur la face (35) de la seconde pièce (30) opposée à ladite quatrième face de glissement (34) et est sensiblement située dans le plan de symétrie (45) de ladite forme en "V". 8. A prosthesis according to claim 7, characterized in that said stiffening rib (36) protrudes on the side (35) of the second part (30) opposite said fourth sliding surface (34) and is located substantially in the plane of symmetry (45) of said L-shaped "V".
  9. 9. Prothèse selon l'une des revendications précédentes, caractérisée par le fait que ladite pièce intermédiaire (10) est réalisée dans un matériau présentant une dureté inférieure à celles des matériaux dans lesquels sont réalisées les deux dites troisième (23) et quatrième (34) faces respectivement des première et seconde pièces (20, 30). 9. A prosthesis according to one of the preceding claims, characterized in that said intermediate piece (10) is made of a material having a lower hardness than the materials from which are formed both of said third (23) and fourth (34 ) faces of the first and second parts respectively (20, 30).
FR9501429A 1995-02-08 1995-02-08 Ankle prosthesis Expired - Fee Related FR2730157B1 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0800803A1 (en) * 1996-04-11 1997-10-15 Tornier S.A. Ankle prosthesis
FR2760354A1 (en) * 1997-03-10 1998-09-11 Tornier Sa Partial ankle prosthesis
WO2000069373A1 (en) * 1999-05-13 2000-11-23 Istituti Ortopedici Rizzoli A prosthesis device for human articulations, in particular for the ankle articulation
FR2808994A1 (en) * 2000-05-22 2001-11-23 Transysteme Sarl Prosthesis for e.g. ankle is made of two parts with protruding elements forced within a hole in the bone and a smooth opposite face cooperating with an intermediate part
US7025790B2 (en) 2002-06-27 2006-04-11 Concepts In Medicine Iii, L.L.C. Ankle joint prosthesis and its method of implantation
WO2006136940A2 (en) * 2005-06-24 2006-12-28 Villiers Malan De Ankle prosthesis
US7915046B2 (en) 2004-06-30 2011-03-29 Depuy Products, Inc. System and method for determining the operating state of orthopaedic admixtures
US7935118B2 (en) 2002-06-21 2011-05-03 Depuy Products, Inc. Prosthesis removal cutting guide, cutting tool and method
US8491596B2 (en) 2002-06-21 2013-07-23 Depuy Products, Inc. Method for removal of bone

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Publication number Priority date Publication date Assignee Title
US3872519A (en) * 1974-04-04 1975-03-25 Nicholas J Giannestras Total ankle prosthesis
FR2370465A1 (en) * 1976-11-15 1978-06-09 Sulzer Ag Prosthesis for ankle joint
US4340978A (en) * 1979-07-02 1982-07-27 Biomedical Engineering Corp. New Jersey meniscal bearing knee replacement
US4755185A (en) * 1987-01-27 1988-07-05 Boehringer Mannheim Corporation Prosthetic joint
FR2676917A1 (en) * 1991-05-29 1992-12-04 Omci Ankle prosthesis

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872519A (en) * 1974-04-04 1975-03-25 Nicholas J Giannestras Total ankle prosthesis
FR2370465A1 (en) * 1976-11-15 1978-06-09 Sulzer Ag Prosthesis for ankle joint
US4340978A (en) * 1979-07-02 1982-07-27 Biomedical Engineering Corp. New Jersey meniscal bearing knee replacement
US4755185A (en) * 1987-01-27 1988-07-05 Boehringer Mannheim Corporation Prosthetic joint
FR2676917A1 (en) * 1991-05-29 1992-12-04 Omci Ankle prosthesis

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0800803A1 (en) * 1996-04-11 1997-10-15 Tornier S.A. Ankle prosthesis
US5824106A (en) * 1996-04-11 1998-10-20 Tornier Sa Ankle prosthesis
FR2760354A1 (en) * 1997-03-10 1998-09-11 Tornier Sa Partial ankle prosthesis
EP0864304A1 (en) * 1997-03-10 1998-09-16 Tornier S.A. Ankle prosthesis
WO2000069373A1 (en) * 1999-05-13 2000-11-23 Istituti Ortopedici Rizzoli A prosthesis device for human articulations, in particular for the ankle articulation
US6926739B1 (en) 1999-05-13 2005-08-09 John J. O'Connor Prosthesis device for human articulations, in particular for the ankle articulation
WO2001089427A1 (en) * 2000-05-22 2001-11-29 S.A Transysteme Articulation prosthesis
FR2808994A1 (en) * 2000-05-22 2001-11-23 Transysteme Sarl Prosthesis for e.g. ankle is made of two parts with protruding elements forced within a hole in the bone and a smooth opposite face cooperating with an intermediate part
US7935118B2 (en) 2002-06-21 2011-05-03 Depuy Products, Inc. Prosthesis removal cutting guide, cutting tool and method
US8491596B2 (en) 2002-06-21 2013-07-23 Depuy Products, Inc. Method for removal of bone
US7025790B2 (en) 2002-06-27 2006-04-11 Concepts In Medicine Iii, L.L.C. Ankle joint prosthesis and its method of implantation
US9320609B2 (en) 2002-06-27 2016-04-26 Lew C. Schon Semi-constrained ankle joint prosthesis and its method of implantation
US7915046B2 (en) 2004-06-30 2011-03-29 Depuy Products, Inc. System and method for determining the operating state of orthopaedic admixtures
WO2006136940A2 (en) * 2005-06-24 2006-12-28 Villiers Malan De Ankle prosthesis
WO2006136940A3 (en) * 2005-06-24 2007-06-07 Villiers Malan De Ankle prosthesis

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