FR2825911A1 - Cotyloidal implant has outer shell and inset with mating lugs to position them together - Google Patents
Cotyloidal implant has outer shell and inset with mating lugs to position them together Download PDFInfo
- Publication number
- FR2825911A1 FR2825911A1 FR0108056A FR0108056A FR2825911A1 FR 2825911 A1 FR2825911 A1 FR 2825911A1 FR 0108056 A FR0108056 A FR 0108056A FR 0108056 A FR0108056 A FR 0108056A FR 2825911 A1 FR2825911 A1 FR 2825911A1
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- Prior art keywords
- cup
- ring
- insert
- implant according
- equatorial
- Prior art date
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- 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
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- 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
- A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—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
- A61F2002/30378—Spherically-shaped protrusion and recess
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30383—Connections 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
- A61F2002/30403—Longitudinally-oriented cooperating ribs and grooves on mating lateral surfaces of a mainly longitudinal connection
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- 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
- A61F2002/30495—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking ring
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- 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
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
- A61F2002/3054—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
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- 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
- A61F2002/30589—Sealing means
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- 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
- A61F2002/3082—Grooves
- A61F2002/30823—Grooves having the shape of a reverse dovetail
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- 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
- A61F2002/3082—Grooves
- A61F2002/30827—Plurality of grooves
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- 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
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- 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
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- 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
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- 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
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- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0058—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
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- 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
Description
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La présente invention concerne un implant cotyloïdien de prothèse articulaire de hanche, fixé sans ciment. The present invention relates to a cotyloid implant for a hip joint prosthesis, fixed without cement.
De manière classique, un implant cotyloïdien comprend une cupule hémisphérique dans laquelle est emboîté un insert. Une cavité sphérique est ménagée dans cet insert. La cupule est insérée dans la cavité cotyloïdienne de l'os iliaque et l'insert reçoit la tête sphérique d'une prothèse fémorale. Conventionally, an acetabular implant comprises a hemispherical cup in which an insert is fitted. A spherical cavity is provided in this insert. The cup is inserted into the acetabulum of the iliac bone and the insert receives the spherical head of a femoral prosthesis.
La cupule est réalisée en métal, par exemple du titane, tandis que l'insert est réalisé en un matériau facilitant le glissement de la tête fémorale, tel que du polyéthylène. The cup is made of metal, for example titanium, while the insert is made of a material facilitating the sliding of the femoral head, such as polyethylene.
Il importe donc de réaliser une liaison solidarisant l'insert à la cupule. It is therefore important to make a connection securing the insert to the cup.
A cet effet, il est connu de réaliser des cannelures dans la face intérieure de la cupule, ces cannelures recevant des cannelures complémentaires s'étendant depuis la face extérieure de l'insert. To this end, it is known to produce grooves in the inner face of the cup, these grooves receiving complementary grooves extending from the outer face of the insert.
Si ce type de liaison permet d'asservir en rotation l'insert par rapport à la cupule, en revanche, il n'interdit pas une translation entre ces deux éléments. If this type of connection allows the insert to be rotated relative to the cup, on the other hand, it does not prevent a translation between these two elements.
Il est également connu de réaliser des créneaux dans la partie équatoriale de la cupule, ces créneaux recevant des dentures s'étendant depuis la face extérieure de l'insert. It is also known to make slots in the equatorial part of the cup, these slots receiving teeth extending from the outer face of the insert.
Ce type de liaison présente comme inconvénient majeur le fait que, lors de la mise en place de l'insert dans la cupule, des tissus mous peuvent être pincés entre les dentures de l'insert et les créneaux de la cupule, ce qui oblige un nouveau positionnement de l'insert par rapport à la cupule après retour. This type of connection has the major drawback that, when the insert is placed in the cup, soft tissue can be pinched between the teeth of the insert and the slots of the cup, which requires a new positioning of the insert relative to the cup after return.
Un but de l'invention est donc de proposer un implant qui, tout en étant d'une mise en place aisée, réalise une immobilisation entre la cupule et l'insert. An object of the invention is therefore to propose an implant which, while being easy to set up, immobilizes the cup and the insert.
De manière connue en soi, un implant cotyloïdien comprend une cupule ayant une partie polaire et une partie équatoriale délimitant une cavité, dans laquelle est engagé un insert. In a manner known per se, an acetabular implant comprises a cup having a polar part and an equatorial part delimiting a cavity, in which an insert is engaged.
Selon l'invention, cet implant comprend une bague ceinturant la partie équatoriale de la cupule dans laquelle est ménagé, au moins, un créneau trapézoïdal pour lequel la bague réalise une paroi périphérique According to the invention, this implant comprises a ring encircling the equatorial part of the cup in which is formed, at least, a trapezoidal notch for which the ring forms a peripheral wall
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extérieure, celui-ci étant susceptible de recevoir au moins une denture s'étendant radialement depuis la face extérieure de l'insert. outer, the latter being capable of receiving at least one toothing extending radially from the outer face of the insert.
Grâce à l'invention, il est possible de réaliser une liaison entre l'insert et la cupule, qui assure, d'une part un asservissement en rotation et, d'autre part, un asservissement en translation grâce au profil trapézoïdal des créneaux qui immobilisent les dentures de l'insert. Les créneaux agissent comme des queues d'aronde et garantissent une immobilisation totale de l'insert par rapport à la cupule. Thanks to the invention, it is possible to make a connection between the insert and the cup, which provides, on the one hand a servo in rotation and, on the other hand, a servo in translation thanks to the trapezoidal profile of the slots which immobilize the teeth of the insert. The slots act like dovetails and guarantee total immobilization of the insert relative to the cup.
En outre, cette liaison est isolée des tissus mous par la bague. In addition, this connection is isolated from the soft tissue by the ring.
Celle-ci réalise une paroi extérieure pour les créneaux et interdit donc toute introduction de tissus mous entre les créneaux de la cupule et les dentures de l'insert. La mise en place de l'insert est donc considérablement facilitée. This creates an outer wall for the slots and therefore prohibits any introduction of soft tissue between the slots of the cup and the teeth of the insert. The installation of the insert is therefore considerably facilitated.
Avantageusement, la cupule présente une partie polaire hémisphérique prolongée d'une partie équatoriale cylindrique d'épaisseur inférieure à celle de la partie hémisphérique, le raccordement de ces parties ménageant un épaulement contre lequel s'appuie la bague et au moins un cran circulaire anti arrachement. Advantageously, the cup has a hemispherical polar part extended by a cylindrical equatorial part of thickness less than that of the hemispherical part, the connection of these parts providing a shoulder against which the ring is supported and at least one circular notch notch .
L'épaulement permet de réaliser un contact surfacique annulaire entre la bague et la cupule garantissant une tenue de la bague par rapport à la cupule. The shoulder makes it possible to produce an annular surface contact between the ring and the cup, guaranteeing that the ring is held relative to the cup.
Dans un mode de réalisation avantageux de la bague, la bague présente, sur sa face extérieure, au moins un cran radial anti-rotation et au moins un cran circulaire anti-arrachement. In an advantageous embodiment of the ring, the ring has, on its outer face, at least one radial anti-rotation notch and at least one circular anti-tearing notch.
La bague participe ainsi à la tenue de la cupule dans la cavité cotyloïdienne osseuse. The ring thus participates in the holding of the cup in the acetabular cavity of the bone.
Avantageusement, la largeur des dentures est au moins égale à l'ouverture des créneaux. Advantageously, the width of the teeth is at least equal to the opening of the slots.
La largeur des dentures est supérieure à l'ouverture des créneaux ce qui permet de maintenir l'insert dans la cupule. La mise en place de l'insert se fait grâce à une déformation élastique du polyéthylène constitutif de l'insert. The width of the teeth is greater than the opening of the slots which makes it possible to maintain the insert in the cup. The insertion of the insert is carried out thanks to an elastic deformation of the polyethylene constituting the insert.
En outre, le cran annulaire sépare la bague en une partie annulaire sphérique orientée côté polaire de la cupule, de rayon égal au rayon de la partie hémisphérique de la cupule et une partie annulaire tronconique orientée du côté équatorial de la cupule. In addition, the annular notch separates the ring into a spherical annular part oriented polar side of the cup, of radius equal to the radius of the hemispherical part of the cup and a frustoconical annular part oriented on the equatorial side of the cup.
La bague est ainsi totalement intégrée dans la cupule. The ring is thus fully integrated into the cup.
<Desc/Clms Page number 3> <Desc / Clms Page number 3>
De préférence, la cupule présente douze créneaux, complémentaires des douze dentures s'étendant de l'insert. Preferably, the cup has twelve slots, complementary to the twelve teeth extending from the insert.
Dans une réalisation préférentielle de la bague, la bague présente douze crans radiaux s'étendant sur toute la hauteur de celle-ci. In a preferred embodiment of the ring, the ring has twelve radial notches extending over the entire height thereof.
De préférence, la bague est soudée sur la cupule. Preferably, the ring is welded to the cup.
Pour sa bonne compréhension, l'invention est décrite ci-après en référence au dessin annexé représentant, à titre d'exemple, un implant cotyloïde selon celle-ci. For a good understanding, the invention is described below with reference to the appended drawing representing, by way of example, a cotyloid implant according to it.
La figure 1 est une vue en perspective éclatée d'un implant selon l'invention ;
Les figures 2 et 3 sont des vues en coupe respectivement éclatées et assemblées de l'implant ;
La figure 4 est une vue en perspective éclatée d'une cupule selon l'invention. Figure 1 is an exploded perspective view of an implant according to the invention;
Figures 2 and 3 are respectively exploded and assembled sectional views of the implant;
Figure 4 is an exploded perspective view of a cup according to the invention.
L'implant cotyloïdien représenté sur la figure 1 comprend une cupule 2 et un insert 4 susceptible d'être engagé dans celle-ci, la cupule recevant une bague 3 dans sa partie équatoriale. The acetabular implant shown in FIG. 1 comprises a cup 2 and an insert 4 capable of being engaged therein, the cup receiving a ring 3 in its equatorial part.
Une tête de prothèse fémorale, non représentée, vient s'engager dans l'insert 4, lorsque l'implant est impacté dans la cavité cotyloïdienne de l'os iliaque. A femoral prosthesis head, not shown, engages in the insert 4, when the implant is impacted in the acetabular cavity of the iliac bone.
La cupule 2 et la bague 3 sont réalisées en métal, notamment en titane, alors que l'insert 4 est réalisé en polyéthylène, ce matériau favorisant la rotation de la tête de la prothèse fémorale dans l'implant cotyloïdien. The cup 2 and the ring 3 are made of metal, in particular titanium, while the insert 4 is made of polyethylene, this material promoting the rotation of the head of the femoral prosthesis in the acetabular implant.
Comme le montre la figure 2, la cupule 2 présente une forme de calotte comprenant une partie hémisphérique 5 prolongée par une partie cylindrique 6. La partie cylindrique 6 présente un diamètre extérieur inférieur à celui de la partie hémisphérique 5, le raccordement des parties hémisphérique 5 et cylindrique 6 ménage un épaulement 8. As shown in Figure 2, the cup 2 has a cap shape comprising a hemispherical part 5 extended by a cylindrical part 6. The cylindrical part 6 has an outer diameter smaller than that of the hemispherical part 5, the connection of the hemispherical parts 5 and cylindrical 6 provides a shoulder 8.
Douze créneaux 10 sont ménagés dans la partie cylindrique 6 de la cupule. Twelve slots 10 are provided in the cylindrical part 6 of the cup.
Ces créneaux 10, tous disposés à 30 , présentent une forme trapézoïdale en queue d'aronde. These slots 10, all arranged at 30, have a trapezoidal dovetail shape.
La bague 3, d'une hauteur égale à la partie cylindrique 6 de la cupule, présente une face extérieure dans laquelle sont ménagés un cran circulaire 12 et des crans radiaux 13. The ring 3, of a height equal to the cylindrical part 6 of the cup, has an outer face in which are formed a circular notch 12 and radial notches 13.
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Le cran circulaire 12 sépare une zone annulaire 14 dont la face extérieure est une portion de sphère de même rayon que celui de la partie hémisphérique de la cupule 2 et une zone annulaire 15 tronconique. The circular notch 12 separates an annular zone 14 whose external face is a portion of a sphere of the same radius as that of the hemispherical part of the cup 2 and an annular zone 15 frustoconical.
Les crans radiaux 13 parallèles à l'axe de rotation de la bague s'étendent sur toute la hauteur de celle-ci. The radial notches 13 parallel to the axis of rotation of the ring extend over the entire height of the latter.
Ces crans 13 sont au nombre de douze et sont répartis à 300 les uns des autres. These notches 13 are twelve in number and are distributed 300 from each other.
Comme cela apparaît sur la figure 1, la bague 3 est engagée sur la partie cylindrique 6 de la cupule 2 et est soudée à cette dernière. As shown in Figure 1, the ring 3 is engaged on the cylindrical part 6 of the cup 2 and is welded to the latter.
L'insert 4 présente une forme hémisphérique complémentaire de celle de la cupule 2. The insert 4 has a hemispherical shape complementary to that of the cup 2.
Sur sa face extérieure, au niveau de sa partie équatoriale, l'insert 4 présente douze dentures quadrangulaires s'étendant radialement. On its outer face, at its equatorial part, the insert 4 has twelve quadrangular teeth extending radially.
Ces dentures 17 présentent une hauteur égale à celle des créneaux 10 et une largeur supérieure à l'ouverture de ces derniers. These teeth 17 have a height equal to that of the slots 10 and a width greater than the opening of the latter.
Sur sa face équatoriale, l'insert présente une crête 19 s'étendant sur la moitié de sa circonférence. On its equatorial face, the insert has a crest 19 extending over half of its circumference.
Lors de l'engagement de l'insert 4 dans la cupule 2, les dentures 17 s'emboîtent dans les créneaux 10 permettant de positionner l'insert selon une orientation correspondant à la morphologie du site. When the insert 4 is engaged in the cup 2, the teeth 17 fit into the slots 10 enabling the insert to be positioned in an orientation corresponding to the morphology of the site.
La crête 19 anti-luxation de l'insert peut être positionnée selon une orientation correspondant à la morphologie particulière du site devant recevoir l'implant. The anti-luxation ridge 19 of the insert can be positioned in an orientation corresponding to the particular morphology of the site to receive the implant.
La bague obture la face extérieure des créneaux 10 et empêche ainsi que des tissus, au cours de la mise en place de l'insert, ne pénètrent à l'intérieur de la cupule. The ring closes the outer face of the slots 10 and thus prevents tissue, during the introduction of the insert, from entering the interior of the cup.
L'invention fournit ainsi un implant cotyloïdien ayant les nombreux avantages indiqués plus haut. The invention thus provides an acetabular implant having the numerous advantages indicated above.
Elle permet, notamment, de réaliser une immobilisation totale entre la cupule et l'insert, tout en permettant une mise en place de l'insert dans la cupule sans risque de pincement de tissus mous. It allows, in particular, to achieve a total immobilization between the cup and the insert, while allowing a fitting of the insert in the cup without risk of pinching of soft tissue.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0108056A FR2825911B1 (en) | 2001-06-19 | 2001-06-19 | COTYLOIDIAN IMPLANT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR0108056A FR2825911B1 (en) | 2001-06-19 | 2001-06-19 | COTYLOIDIAN IMPLANT |
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FR2825911A1 true FR2825911A1 (en) | 2002-12-20 |
FR2825911B1 FR2825911B1 (en) | 2003-09-19 |
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FR0108056A Expired - Fee Related FR2825911B1 (en) | 2001-06-19 | 2001-06-19 | COTYLOIDIAN IMPLANT |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2903881A1 (en) * | 2006-07-20 | 2008-01-25 | Tornier Sas | Prosthetic acetabulum kit for surgical intervention, has external rings of series with respective different surface properties, connected in selective manner on prosthetic acetabulum body so as to form respective prosthetic acetabulum |
EP2174621A1 (en) | 2008-10-07 | 2010-04-14 | Finsbury (Development) Limited | Prosthesis |
CN103096842A (en) * | 2010-07-29 | 2013-05-08 | 梅奥医学教育和研究基金会 | Acetabular cup prosthesis |
FR2993770A1 (en) * | 2012-07-27 | 2014-01-31 | Fournitures Hospitalieres Ind | Acetabular implant for treatment of arthrosic hips, has reinforcing ring including two legs, where each leg is arranged to be deformed elastically towards cup, and is placed in housing at time of impaction of implant in acetabular cavity |
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EP0278205A1 (en) * | 1987-01-28 | 1988-08-17 | G. CREMASCOLI S.p.A. | A hip prosthesis structure comprising a femoral component and an acetabular component |
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 |
FR2715556A1 (en) * | 1994-02-03 | 1995-08-04 | Landanger Landos | Reconstruction of acetabulum cavity during hip replacement |
FR2770769A1 (en) * | 1997-11-07 | 1999-05-14 | Orthotechnique | Acetabular cup prosthesis for hip surgery |
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EP0278205A1 (en) * | 1987-01-28 | 1988-08-17 | G. CREMASCOLI S.p.A. | A hip prosthesis structure comprising a femoral component and an acetabular component |
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 |
FR2715556A1 (en) * | 1994-02-03 | 1995-08-04 | Landanger Landos | Reconstruction of acetabulum cavity during hip replacement |
FR2770769A1 (en) * | 1997-11-07 | 1999-05-14 | Orthotechnique | Acetabular cup prosthesis for hip surgery |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2903881A1 (en) * | 2006-07-20 | 2008-01-25 | Tornier Sas | Prosthetic acetabulum kit for surgical intervention, has external rings of series with respective different surface properties, connected in selective manner on prosthetic acetabulum body so as to form respective prosthetic acetabulum |
EP2174621A1 (en) | 2008-10-07 | 2010-04-14 | Finsbury (Development) Limited | Prosthesis |
US8372155B2 (en) * | 2008-10-07 | 2013-02-12 | Finsbury (Development) Limited | Acetabular cup prosthesis and method of forming the prosthesis |
EP2561832A1 (en) * | 2008-10-07 | 2013-02-27 | Finsbury (Development) Limited | Prosthesis |
US9339389B2 (en) * | 2008-10-07 | 2016-05-17 | Finsbury (Development) Limited | Acetabular cup prosthesis and method of forming the prosthesis |
US20130123932A1 (en) * | 2008-10-07 | 2013-05-16 | Finsbury (Development) Limited | Acetabular Cup Prosthesis And Method Of Forming The Prosthesis |
EP2598084A2 (en) * | 2010-07-29 | 2013-06-05 | Mayo Foundation For Medical Education And Research | Acetabular cup prosthesis |
EP2598084A4 (en) * | 2010-07-29 | 2014-01-29 | Mayo Foundation | Acetabular cup prosthesis |
US8900319B2 (en) | 2010-07-29 | 2014-12-02 | Mayo Foundation For Medical Education And Research | Acetabular cup prosthesis |
CN103096842A (en) * | 2010-07-29 | 2013-05-08 | 梅奥医学教育和研究基金会 | Acetabular cup prosthesis |
CN103096842B (en) * | 2010-07-29 | 2016-07-06 | 梅奥医学教育和研究基金会 | Acetabular cup prosthesis |
KR101853992B1 (en) | 2010-07-29 | 2018-05-02 | 메이오 파운데이션 포 메디칼 에쥬케이션 앤드 리써치 | Acetabular cup prosthesis |
FR2993770A1 (en) * | 2012-07-27 | 2014-01-31 | Fournitures Hospitalieres Ind | Acetabular implant for treatment of arthrosic hips, has reinforcing ring including two legs, where each leg is arranged to be deformed elastically towards cup, and is placed in housing at time of impaction of implant in acetabular cavity |
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