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FR2689000A1 - Anchored cup for complete hip prosthesis - has outer metal shell and inner plastic one with antislip ridge on rim and engaging flat faces in polygonal shape - Google Patents

Anchored cup for complete hip prosthesis - has outer metal shell and inner plastic one with antislip ridge on rim and engaging flat faces in polygonal shape Download PDF

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Publication number
FR2689000A1
FR2689000A1 FR9203977A FR9203977A FR2689000A1 FR 2689000 A1 FR2689000 A1 FR 2689000A1 FR 9203977 A FR9203977 A FR 9203977A FR 9203977 A FR9203977 A FR 9203977A FR 2689000 A1 FR2689000 A1 FR 2689000A1
Authority
FR
France
Prior art keywords
cup
cap
perforations
screws
anchored
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR9203977A
Other languages
French (fr)
Inventor
Duliere Jean-Claude
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DULIERE JEAN CLAUDE
RECH FABRICATIONS ET
Original Assignee
DULIERE JEAN CLAUDE
RECH FABRICATIONS ET
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DULIERE JEAN CLAUDE, RECH FABRICATIONS ET filed Critical DULIERE JEAN CLAUDE
Priority to FR9203977A priority Critical patent/FR2689000A1/en
Publication of FR2689000A1 publication Critical patent/FR2689000A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30141—Convex polygonal shapes dodecagonal
    • 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
    • A61F2002/30362—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 with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
    • 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
    • A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
    • 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
    • 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
    • A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
    • 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
    • A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
    • A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3443—Acetabular cups with an anti-luxation elevated rim portion, e.g. on the inner shell
    • 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
    • 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
    • A61F2220/0058—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00017—Iron- or Fe-based alloys, e.g. stainless steel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The anchored cup for a complete hip prosthesis which is fixed without cement or threading, comprises an outer shell of a biocompatible metal such as stainless steel or a titanium alloy, equipped with at least one radial fixing lug (6) with holes (6a) for screws, and apertures (4) inside the cup for anchoring screws, and an inner shell of a biocompatible plastic such as HDPE. The inner shell, which fits inside the outer one, has an anti-slip ridge (3a) covering a sector of at least 180 degrees along its upper rear edge, while its outer surface has a series of faces (3b) which give it a polygonal shape and engage with matching faces on the inside of the outer cup. The outer metal cup can have two radial fixing brackets (6,7), located diametrically opposite one another. The lower bracket (7) is hook-shaped to engage with the lower edge of the cotyle, while the upper one is in the shape of a racket and has four holes (6a) in a cross formation for fixing screws. ADVANTAGE - More reliable fixing, without risk of movement.

Description

CUPULE ANCREE POUR PROTHESE TOTALE DE HANCHE
La présente invention concerne une cupule ancrée pour prothèse totale de hanche du type non cimenté et non vissé, comprenant, d'une part, une calotte extérieure en un métal biocompatible tel qu'un acier inoxydable ou un alliage de titane ou autre similaire, munie d'au moins une patte radiale de fixation pourvue de perforations pour le passage de vis et dont la paroi sphérique présente une pluralité de trous pour le passage de vis de fixation et, d'autre part, une calotte intérieure en une matière plus douce que le métal, telle qu'une matière plastique biocompatible, telle q'un polyéthylène haute densité.ANCHORED CUP FOR TOTAL HIP PROSTHESIS
The present invention relates to an anchored cup for total hip prosthesis of the non-cemented and non-screwed type, comprising, on the one hand, an outer cap made of a biocompatible metal such as stainless steel or a titanium alloy or the like, provided at least one radial fixing lug provided with perforations for the passage of screws and whose spherical wall has a plurality of holes for the passage of fixing screws and, on the other hand, an inner cap made of a softer material than metal, such as a biocompatible plastic, such as a high density polyethylene.

La difficulté majeure recontrée avec ces cupules est l'élimination ou, tout au moins, la réduction des risques de luxation. La présente invention vise justement à atteindre ce but. A cet effet, dans la prothèse qu'elle concerne et qui est du type précité, d'une part, la calotte intérieure, qui est engagée dur dans la calotte extérieure, présente le long de son bord supérieur et postérieur et sur un secteur d'au moins 1800, un prolongement formant auvent antiluxation et, d'autre part, de segment annulaire bordant l'ouverture de la calotte intérieure est muni, sur sa face externe de facettes lui conférant un contour polygonal tandis que le segment annulaire correspondant de la calotte extérieure présente, sur sa face interne, le même nombre de facettes lui conférant le même contour polygonal. The major difficulty encountered with these cups is the elimination or, at least, the reduction of the risks of dislocation. The present invention aims precisely to achieve this goal. To this end, in the prosthesis which it relates to and which is of the aforementioned type, on the one hand, the inner cap, which is engaged hard in the outer cap, has along its upper and posterior edge and on a sector d '' at least 1800, an extension forming an antiluxation awning and, on the other hand, an annular segment bordering the opening of the inner cap is provided, on its external face with facets giving it a polygonal contour while the corresponding annular segment of the outer shell has, on its inner face, the same number of facets giving it the same polygonal outline.

Cette disposition permet d'orienter à volonte la calotte intérieure par rapport à la calotte extérieure et donne ainsi au praticien qui pose cette prothèse ou la corrige, d'orienter l'auvent antiluxation de la calotte intérieure dans la direction la plus propice à éviter une luxation. This arrangement makes it possible to orient the inner cap at will relative to the outer cap and thus gives the practitioner who places this prosthesis or corrects it, to orient the antiluxation canopy of the inner cap in the direction most conducive to avoiding dislocation.

Suivant une autre caractéristique de l'invention visant à procurer, à cette cupule, une meilleure stabilité, la calotte extérieure métallique est équipée de deux pattes radiales de fixation, diamétralement opposée, dont l'une, inférieure, en forme de crochet est engageable sur le bord inférieur du cotyle et dont l'autre, supérieure en forme de raquette, présente quatre perforations disposées en croix permettant la mise en place de quatre vis de fixation. According to another characteristic of the invention aimed at providing this cup with better stability, the metal outer cap is equipped with two radial fixing lugs, diametrically opposite, one of which, lower, in the form of a hook, can be engaged on the lower edge of the acetabulum and the other, upper in the shape of a racket, has four perforations arranged in a cross allowing the placement of four fixing screws.

Suivant encore une autre caractéristique de l'invention visant à améliorer la tenue de cette cupule dans le cotyle du patient, outre les perforations pour le passage de vis de fixation, la calotte métallique extérieure présente des perforations pour des pions cylindroconiques annelé extérieurement et filetés intérieurement. According to yet another characteristic of the invention aimed at improving the holding of this cup in the acetabulum of the patient, in addition to the perforations for the passage of fixing screws, the outer metal cap has perforations for cylindroconical pawns ringed externally and internally threaded .

De toute façon, l'invention sera bien comprise, à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme d'exécution de cette cupule
Figure 1 en est une vue de face en élévation
Figure 2 en est une vue en coupe suivant II-II de figure 1.Anyway, the invention will be clearly understood, with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting example, an embodiment of this cup.
Figure 1 is a front view in elevation
Figure 2 is a sectional view along II-II of Figure 1.

Comme le montre le dessin, cette cupule, qui est du type non vissé et non scellé, comprend une calotte extérieure 2 sensiblement hémiphérique, en métal biocompatible, à l'intérieur de laquelle est logée une calotte intérieure 3 en une matière plus douce que le métal, et notamment en une matière plastique biocompatible telle qu'un polyéthylène haute densité. As the drawing shows, this cup, which is of the non-screwed and unsealed type, comprises an outer cap 2 substantially hemipheric, made of biocompatible metal, inside which is housed an inner cap 3 made of a softer material than the metal, and in particular a biocompatible plastic material such as a high density polyethylene.

Un métal convenant parfaitement à la constitution de la calotte extérieure 2 est un acier inoxydable ou un alliage de titane. A metal which is perfectly suitable for constituting the outer cap 2 is stainless steel or a titanium alloy.

Comme le montre le dessin, la calotte intérieure 3, qui est destinée à être engagée dure dans la calotte extérieure 2 présente, le long de son bord supérieur et postérieur et sur un secteur d'au moins 1800, un prolongement 3a formant un auvent antiluxation. En outre, le segment annulaire bordant l'ouverture de la calotte intérieure 3 est muni, sur sa face externe, de facettes 3b lui conférant un contour polygonal, tandis que le segment annulaire correspondant de la calotte extérieure 2 présente, sur sa face interne, le même nombre de facettes 2b lui conférant le même contour polygonal. As shown in the drawing, the inner cap 3, which is intended to be engaged hard in the outer cap 2 has, along its upper and posterior edge and over an area of at least 1800, an extension 3a forming an anti-luxation canopy . In addition, the annular segment bordering the opening of the inner cap 3 is provided, on its outer face, with facets 3b giving it a polygonal contour, while the corresponding annular segment of the outer cap 2 has, on its inner face, the same number of facets 2b giving it the same polygonal outline.

Comme cela se conçoit aisément, cette disposition permet au praticien qui effectue la pose de cette prothèse ou sa correction, d'orienter l'auvent anti-luxation 3a dans la direction la plus propice à éviter une luxation. As is easily understood, this arrangement allows the practitioner who performs the fitting of this prosthesis or its correction, to orient the anti-dislocation canopy 3a in the direction most conducive to avoiding dislocation.

Pour permettre un choix convenable de l'orientation angulaire de l'auvent anti-luxation 3a de la calotte intérieure 3, le nombre de facettes 2b et 3b des contours polygonaux des segments annulaires précités de la calotte extérieure 2 et de la calotte intérieure 3 est avantageusement de douze. To allow a suitable choice of the angular orientation of the anti-luxation awning 3a of the inner cap 3, the number of facets 2b and 3b of the polygonal contours of the above-mentioned annular segments of the outer cap 2 and of the inner cap 3 is advantageously twelve.

Suivant une autre caractéristique de l'invention visant à ameliorer la stabilité de cette cupule, outre les perforations 4 prévues dans la paroi sphérique de la calotte extérieure 2 pour le passage de vis de fixation 5 implantées dans le cotyle du patient, cette calotte extérieure 2 est équipée de deux pattes radiales diamétralement opposées, respectivement une patte supérieure 6 en forme de raquette et une patte inférieure 7 en forme de crochet engageable sur le bord inférieur du cotyle. According to another characteristic of the invention aimed at improving the stability of this cup, in addition to the perforations 4 provided in the spherical wall of the outer cap 2 for the passage of fixing screws 5 implanted in the acetabulum of the patient, this outer cap 2 is equipped with two diametrically opposite radial lugs, respectively an upper lug 6 in the form of a racket and a lower lug 7 in the form of a hook which can be engaged on the lower edge of the acetabulum.

La patte radiale supérieure 6 en forme de raquette présente quatre perforations 6a disposées en croix pour le passage de vis de fixation, tandis que la patte radiale inférieure 7 en forme de crochet présente une seule perforation 7a pour le passage d'une vis de fixation. The upper radial tab 6 in the form of a racket has four perforations 6a arranged in a cross for the passage of fixing screws, while the lower radial tab 7 in the form of a hook has a single perforation 7a for the passage of a fixing screw.

Suivant encore une autre caractéristique visant à améliorer la stabilité de cette cupule dans le cotyle du patient, outre les perforations 4 prévues dans la paroi sphérique de la calotte métallique extérieure 2 pour le passage de vis de fixation 5, sont prévues d'autres perforations 8, deux dans cet exemple, pour le passage de pions cylindro-coniques 9 annelés extérieurement et filetés intérieurement. Le filetage intérieur de ces pions 9 est destiné à permettre au praticien de les mettre en place et de les retirer en cas de nécessité.  According to yet another characteristic aimed at improving the stability of this cup in the acetabulum of the patient, in addition to the perforations 4 provided in the spherical wall of the outer metal cap 2 for the passage of fixing screws 5, other perforations 8 are provided. , two in this example, for the passage of cylindrical-conical pins 9 externally annealed and internally threaded. The internal threading of these pins 9 is intended to allow the practitioner to put them in place and remove them if necessary.

Claims (4)

REVENDICATIONS 1. Cupule ancrée pour prothèse totale de hanche, du type non cimenté et non vissé, comprenant, d'une part, une calotte extérieure (2) en un métal biocompatible tel qu'un acier inoxydable ou un alliage de titane ou autre similaire, munie d'au moins une patte radiale de fixation pourvue de perforations pour le passage de vis et dont la paroi sphérique présente une pluralité de trous (4) pour le passage de vis de fixation (5) et, d'autre part, une calotte intérieure (3) en une matière plus douce que le métal, comme une matière plastique biocompatible, telle q'un polyéthylène haute densité, caractérisée en ce que, d'une part, la calotte intérieure (3), qui est engagée dur dans la calotte extérieure (2), présente le long de son bord supérieur et posterieur et sur un secteur d'au moins 1800, un prolongement (3a) formant auvent antiluxation et, d'autre part, de segment annulaire bordant l'ouverture de la calotte intérieure (3) est muni, sur sa face externe, de facettes (3b) lui conférant un contour polygonal tandis que le segment annulaire correspondant de la calotte extérieure (2) présente, sur sa face interne, le même nombre de facettes (2b) lui conférant le même contour polygonal. 1. Anchored cup for total hip prosthesis, of the non-cemented and non-screwed type, comprising, on the one hand, an outer cap (2) made of a biocompatible metal such as stainless steel or a titanium alloy or the like, provided with at least one radial fixing lug provided with perforations for the passage of screws and whose spherical wall has a plurality of holes (4) for the passage of fixing screws (5) and, on the other hand, a cap inner (3) of a softer material than metal, such as a biocompatible plastic, such as a high density polyethylene, characterized in that, on the one hand, the inner cap (3), which is engaged hard in the outer cap (2), present along its upper and posterior edge and over a sector of at least 1800, an extension (3a) forming an anti-luxation canopy and, on the other hand, an annular segment bordering the opening of the cap inner (3) has facets on its outer face (3b) giving it a polygonal outline while the corresponding annular segment of the outer cap (2) has, on its internal face, the same number of facets (2b) giving it the same polygonal outline. 2. Cupule selon la revendication 1, caractérisée en ce que la calotte extérieure métallique (2) est équipée de deux pattes radiales de fixation (6 et 7), diamétralement opposée, dont l'une, inférieure (7), en forme de crochet est engageable sur le bord inférieur du cotyle et dont l'autre, supérieure (6) en forme de raquette, présente quatre perforations (6a) disposées en croix, permettant la mise en place de quatre vis de fixation. 2. Cup according to claim 1, characterized in that the metallic outer cap (2) is equipped with two radial fixing lugs (6 and 7), diametrically opposite, one of which, lower (7), in the form of a hook can be engaged on the lower edge of the cup and the other, upper (6) in the shape of a racket, has four perforations (6a) arranged in a cross, allowing the installation of four fixing screws. 3. Cupule selon la revendication 1 ou 2, caractérisée en ce qu'outre les perforations (4) pour le passage de vis de fixation, la calotte métallique extérieure (2) présente des perforations (8) pour des pions cylindro-coniques (9) annelés extérieurement et filetés intérieurement. 3. Cup according to claim 1 or 2, characterized in that in addition to the perforations (4) for the passage of fixing screws, the outer metal cap (2) has perforations (8) for cylindrical-conical pins (9 ) externally ringed and internally threaded. 4. Cupule selon l'une quelconque des revendications précédentes, caractérisée en ce que le nombre des côtés des polygones formés par les faces (2b, 3b) des calottes extérieure 2 et intérieure 3 est de douze.  4. Cup according to any one of the preceding claims, characterized in that the number of sides of the polygons formed by the faces (2b, 3b) of the outer 2 and inner 3 caps is twelve.
FR9203977A 1992-03-27 1992-03-27 Anchored cup for complete hip prosthesis - has outer metal shell and inner plastic one with antislip ridge on rim and engaging flat faces in polygonal shape Withdrawn FR2689000A1 (en)

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FR9203977A FR2689000A1 (en) 1992-03-27 1992-03-27 Anchored cup for complete hip prosthesis - has outer metal shell and inner plastic one with antislip ridge on rim and engaging flat faces in polygonal shape

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FR9203977A FR2689000A1 (en) 1992-03-27 1992-03-27 Anchored cup for complete hip prosthesis - has outer metal shell and inner plastic one with antislip ridge on rim and engaging flat faces in polygonal shape

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710836A1 (en) * 1993-10-06 1995-04-14 Rambert Andre Acetabular element of a total hip prosthesis which can be implanted without cement
FR2784890A1 (en) * 1998-10-21 2000-04-28 Jean Yves Lazennec Cotyloidal implant for hip joint prosthesis has recesses in insert to receive fixing screw heads
US6306173B1 (en) * 1997-07-30 2001-10-23 Medidea, Llc Modular acetabular reconstruction plate
FR2840802A1 (en) * 2002-06-13 2003-12-19 Philippe Hernigou Cotyloid implant for hip prosthesis comprises cupule delimiting smooth and polished cavity with couplings able to engage fixed core complementary couplings, core open end having support flange connected to fixed core cavity
US6840959B2 (en) * 2001-07-05 2005-01-11 Howmedica Ostenics Corp. Pelvic prosthesis plus methods and tools for implantation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641590A (en) * 1970-01-16 1972-02-15 Arthur A Michele Acetabular replacement prosthesis and method of assembling
FR2595241A1 (en) * 1986-03-07 1987-09-11 Erato Hip prosthesis
US4795469A (en) * 1986-07-23 1989-01-03 Indong Oh Threaded acetabular cup and method
FR2633823A1 (en) * 1988-07-07 1990-01-12 Osteal Medical Laboratoires Bone cotyle support ring for hip prosthesis
FR2640497A1 (en) * 1988-12-19 1990-06-22 Mesguich Alain Femoral implant for a hip prosthesis
FR2651995A1 (en) * 1989-09-15 1991-03-22 Aubaniac Jean Manuel Ring for acetabular implant
CH677072A5 (en) * 1989-02-24 1991-04-15 Schenker Emil Ag Spherical joint for hip joint prosthesis - includes cup shaped half with tapered metal shell carrying cutting thread formed by saw teeth
FR2660546A1 (en) * 1990-04-06 1991-10-11 Setiey Louis Module for acetabular reconstruction

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641590A (en) * 1970-01-16 1972-02-15 Arthur A Michele Acetabular replacement prosthesis and method of assembling
FR2595241A1 (en) * 1986-03-07 1987-09-11 Erato Hip prosthesis
US4795469A (en) * 1986-07-23 1989-01-03 Indong Oh Threaded acetabular cup and method
FR2633823A1 (en) * 1988-07-07 1990-01-12 Osteal Medical Laboratoires Bone cotyle support ring for hip prosthesis
FR2640497A1 (en) * 1988-12-19 1990-06-22 Mesguich Alain Femoral implant for a hip prosthesis
CH677072A5 (en) * 1989-02-24 1991-04-15 Schenker Emil Ag Spherical joint for hip joint prosthesis - includes cup shaped half with tapered metal shell carrying cutting thread formed by saw teeth
FR2651995A1 (en) * 1989-09-15 1991-03-22 Aubaniac Jean Manuel Ring for acetabular implant
FR2660546A1 (en) * 1990-04-06 1991-10-11 Setiey Louis Module for acetabular reconstruction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710836A1 (en) * 1993-10-06 1995-04-14 Rambert Andre Acetabular element of a total hip prosthesis which can be implanted without cement
US6306173B1 (en) * 1997-07-30 2001-10-23 Medidea, Llc Modular acetabular reconstruction plate
FR2784890A1 (en) * 1998-10-21 2000-04-28 Jean Yves Lazennec Cotyloidal implant for hip joint prosthesis has recesses in insert to receive fixing screw heads
US6840959B2 (en) * 2001-07-05 2005-01-11 Howmedica Ostenics Corp. Pelvic prosthesis plus methods and tools for implantation
FR2840802A1 (en) * 2002-06-13 2003-12-19 Philippe Hernigou Cotyloid implant for hip prosthesis comprises cupule delimiting smooth and polished cavity with couplings able to engage fixed core complementary couplings, core open end having support flange connected to fixed core cavity

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