FR2795626A1 - HIP PROSTHESIS WITH FEMALE COMPONENT AND COTYLOIDAL ELEMENT, WITH LARGE FACILITY OF IMPLANTATION - Google Patents

HIP PROSTHESIS WITH FEMALE COMPONENT AND COTYLOIDAL ELEMENT, WITH LARGE FACILITY OF IMPLANTATION Download PDF

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Publication number
FR2795626A1
FR2795626A1 FR0008497A FR0008497A FR2795626A1 FR 2795626 A1 FR2795626 A1 FR 2795626A1 FR 0008497 A FR0008497 A FR 0008497A FR 0008497 A FR0008497 A FR 0008497A FR 2795626 A1 FR2795626 A1 FR 2795626A1
Authority
FR
France
Prior art keywords
hip prosthesis
prosthesis according
femoral component
shaft
proximal end
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.)
Granted
Application number
FR0008497A
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French (fr)
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FR2795626B1 (en
Inventor
James William Grassick
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.)
Taloco Investments NV
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Taloco Investments NV
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Filing date
Publication date
Application filed by Taloco Investments NV filed Critical Taloco Investments NV
Publication of FR2795626A1 publication Critical patent/FR2795626A1/en
Application granted granted Critical
Publication of FR2795626B1 publication Critical patent/FR2795626B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7097—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants
    • A61B17/7098—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants wherein the implant is permeable or has openings, e.g. fenestrated screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8827—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it with filtering, degassing, venting or pressure relief means
    • 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
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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
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • 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
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    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3676—Distal or diaphyseal parts of shafts
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30322—The prosthesis having different structural features at different locations within the same prosthesis differing in surface structures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • 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
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • 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
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    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • 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
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
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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
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    • A61F2002/30769—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth madreporic
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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
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    • A61F2250/0026—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in surface structures
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    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures
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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
    • A61F2310/00389—The prosthesis being coated or covered with a particular material
    • A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
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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
    • A61F2310/00389—The prosthesis being coated or covered with a particular material
    • A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
    • A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite

Landscapes

  • 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

La présente invention concerne une prothèse de hanche ayant un composant fémoral (1) et un élément cotyloïdien associé, ayant une grande faculté d'implantation, l'élément fémoral (1) étant constitué d'un arbre (2) qui a une extrémité distale pointue (3) prévue pour être insérée dans le canal diaphysaire du fémur d'un patient et une extrémité proximale qui est évasée et munie d'un siège pour un col séparable qui est prévu pour relier le composant fémoral (1) à l'élément cotyloïdien. L'arbre comporte, sur sa surface extérieure, au niveau de l'extrémité proximale, plusieurs gorges (6) adaptées pour faciliter l'ostéo-intégration du composant fémoral.The present invention relates to a hip prosthesis having a femoral component (1) and an associated acetabular element, having great implantability, the femoral element (1) consisting of a shaft (2) which has a distal end. pointed (3) intended to be inserted into the diaphyseal canal of the femur of a patient and a proximal end which is flared and provided with a seat for a separable neck which is intended to connect the femoral component (1) to the element acetabulum. The shaft has, on its outer surface, at the proximal end, several grooves (6) adapted to facilitate osteointegration of the femoral component.

Description

La présente invention concerne une prothèse deThe present invention relates to a prosthesis

hanche ayant un composant fémoral et un élément cotyloï-  hip having a femoral component and an acetabular element

dien correspondant, fournissant une grande faculté d'im-  dien correspondent, providing a great faculty of im-

plantation. Plus particulièrement, la présente invention concerne une prothèse de hanche ayant un composant fémo-  planting. More particularly, the present invention relates to a hip prosthesis having a femoral component.

ral qui s'adapte à différents types d'os du patient.  ral which adapts to different types of patient's bones.

On sait que les prothèses de hanche sont cons-  We know that hip prostheses are

tituées d'un composant fémoral, ou d'une tige, qui est prévu pour être inséré dans le canal diaphysaire du fémur  with a femoral component, or a stem, which is intended to be inserted into the diaphyseal canal of the femur

du patient, un col amovible pouvant être relié à son ex-  of the patient, a removable collar that can be connected to his ex-

trémité proximale, pénétrant dans le composant fémoral à l'aide de son extrémité et ayant, à l'extrémité opposée, un élément sphérique qui est adapté pour coopérer avec un  proximal end, penetrating into the femoral component using its end and having, at the opposite end, a spherical element which is adapted to cooperate with a

élément cotyloïdien qui reconstruit le siège de l'articu-  acetabular element which reconstructs the seat of the articu-

lation du fémur dans l'os pelvien du patient.  lation of the femur in the patient's pelvic bone.

Un élément constitué d'une céramique ou de polyéthylène est habituellement interposé entre la tête  An element made of a ceramic or polyethylene is usually interposed between the head

sphérique agencée sur le col amovible et l'élément coty-  spherical arranged on the removable collar and the cotton element

loïdien et permet d'éviter l'usure de la tête sphérique amovible et par conséquent d'améliorer l'articulation du fémur. Des types habituels de composants fémoraux sont fournis de manière à s'adapter au canal diaphysaire du  loïdien and makes it possible to avoid the wear of the removable spherical head and consequently to improve the articulation of the femur. Common types of femoral components are provided to suit the diaphyseal canal of the

fémur du patient dans lequel ils sont insérés.  femur of the patient in which they are inserted.

Cependant, en fonction de l'âge du patient, le type d'os est différent et par conséquent a une réponse différente à l'insertion du composant fémoral. Dans le cas d'un os jeune, l'insertion du composant fémoral tend à créer une cohésion entre l'os et le composant fémoral, sans avoir besoin de cimenter le composant fémoral à  However, depending on the age of the patient, the type of bone is different and therefore has a different response to the insertion of the femoral component. In the case of a young bone, the insertion of the femoral component tends to create a cohesion between the bone and the femoral component, without the need to cement the femoral component to

l'intérieur du canal diaphysaire du fémur du patient.  inside the diaphyseal canal of the patient's femur.

Si au lieu de cela l'os est âgé, cette cohésion n'est pas optimum et par conséquent le composant fémoral est cimenté à l'intérieur du canal diaphysaire du fémur,  If instead the bone is aged, this cohesion is not optimal and therefore the femoral component is cemented inside the diaphyseal canal of the femur,

comme cela a lieu si l'os est celui d'une personne âgée.  as it does if the bone is that of an elderly person.

Des types habituels de composants fémoraux, qui  Common types of femoral components, which

sont insérés dans le canal diaphysaire du fémur après ré-  are inserted into the diaphyseal canal of the femur after re-

alisation d'une résection de la tête de fémur ont une forme allongée dans laquelle l'extrémité distale c'est-à-dire l'extrémité prévue pour être insérée profon- dément dans le canal diaphysaire du fémur, est mise en forme de manière à avoir une pointe arrondie, alors que la partie proximale a une zone évasée afin de s'adapter au canal diaphysaire du fémur et surtout de bloquer le  of a resection of the femur head have an elongated shape in which the distal end, that is to say the end intended to be inserted deeply into the diaphyseal canal of the femur, is shaped so to have a rounded tip, while the proximal part has a flared area in order to adapt to the diaphyseal canal of the femur and especially to block the

composant fémoral dans son siège.femoral component in its seat.

Cependant, les composants fémoraux habituels ont pour inconvénient de ne pas pouvoir être facilement adaptés à l'anatomie du canal diaphysaire du patient, qui  However, the usual femoral components have the disadvantage that they cannot be easily adapted to the anatomy of the patient's diaphyseal canal, which

est différente pour chaque patient.  is different for each patient.

De plus, les éléments cotyloïdiens utilisés en combinaison avec les composants fémoraux sont constitués par des corps hémisphériques qui ont, sur leur surface extérieure, plusieurs ailettes d'interdiction de mise en rotation qui sont formées en tant qu'éléments qui font saillie radialement à partir de la surface extérieure de  In addition, the acetabular elements used in combination with the femoral components are constituted by hemispherical bodies which have, on their outer surface, several rotation-preventing fins which are formed as elements which protrude radially from of the outer surface of

l'élément cotyloidien, qui sont situées dans une zone in-  the acetabulum, which are located in an indi-

termédiaire de la surface extérieure et atteignent prati-  through the outer surface and reach practi-

quement le bord du corps hémisphérique. Par l'intermé-  only the edge of the hemispherical body. Through

diaire de cette configuration des ailettes, d'une part l'élément cotyloidien inséré dans l'os pelvien n'effectue pas de rotation nonvoulue, mais d'autre part, du fait de l'angle avec lequel l'élément cotyloïdien est inséré dans  diary of this configuration of the fins, on the one hand the acetabular element inserted in the pelvic bone does not perform an involuntary rotation, but on the other hand, because of the angle with which the acetabular element is inserted in

l'os pelvien, les ailettes risquent de faire partielle-  the pelvic bone, the fins may become partial-

ment saillie à partir du siège de l'os pelvien et par  protrude from the seat of the pelvic bone and through

conséquent de venir en contact avec les tissus entou-  therefore come into contact with the surrounding tissue

rants, en les détériorant en conséquence.  rants, deteriorating them accordingly.

Le but de la présente invention est de fournir une prothèse de hanche ayant un composant fémoral et un élément cotyloidien associé, ayant une grande faculté d'implantation et qui, grâce à ses particularités de construction, peut être implantée chez des patients ayant  The aim of the present invention is to provide a hip prosthesis having a femoral component and an associated acetabular element, having great implantation capacity and which, thanks to its construction features, can be implanted in patients having

des types d'os différents.different types of bones.

Dans la portée de la présente invention, un but de celle-ci consiste à fournir une prothèse de hanche ayant un composant fémoral et un élément cotyloïdien as- socié qui permet de fournir une cohésion optimum entre l'os et le composant fémoral sans l'aide de ciment dans le cas de jeunes patients ou à l'aide d'une utilisation partielle ou complète de ciment dans le cas de patients  Within the scope of the present invention, an object thereof is to provide a hip prosthesis having a femoral component and an associated acetabular element which makes it possible to provide optimum cohesion between the bone and the femoral component without using cement in the case of young patients or using partial or full use of cement in the case of patients

âgés.aged.

Un autre but de la présente invention consiste  Another object of the present invention consists in

à fournir une prothèse de hanche ayant un composant fémo-  to provide a hip prosthesis having a femoral component

ral et un élément cotyloïdien associé dans lequel l'élé-  ral and an associated acetabular element in which the element

ment cotyloïdien est agencé de manière à ne pas détério-  the acetabulum is arranged so as not to deteriorate

rer les tissus environnants lorsqu'il est inséré dans l'os pelvien afin de reconstruire l'articulation du fémur  r the surrounding tissue when inserted into the pelvic bone to reconstruct the femoral joint

sur le pelvis.on the pelvis.

Un autre but de la présente invention consiste  Another object of the present invention consists in

à fournir une prothèse de hanche ayant un composant fémo-  to provide a hip prosthesis having a femoral component

ral et un élément cotyloïdien associé, dans laquelle le composant fémoral peut être adapté à différents types de  ral and an associated acetabular element, in which the femoral component can be adapted to different types of

canal diaphysaire de fémur.diaphyseal canal of femur.

Un autre but de la présente invention consiste  Another object of the present invention consists in

à fournir une prothèse de hanche ayant un composant fémo-  to provide a hip prosthesis having a femoral component

ral et un élément cotyloïdien associé, qui est très fia-  ral and an associated acetabular element, which is very reliable

ble, relativement facile à fabriquer et à des coûts com-  ble, relatively easy to manufacture and at low cost

pétitifs. Cet objectif, ces buts, ainsi que d'autres, qui vont apparaître ci-après, sont atteints par une prothèse  petitives. This objective, these objectives, as well as others, which will appear below, are achieved by a prosthesis

de hanche ayant un composant fémoral et un élément coty-  hip having a femoral component and a coty-

loïdien associé, ayant une grande faculté d'implantation, le composant fémoral étant constitué d'un arbre qui a une extrémité distale pointue prévue pour être insérée dans  associated loidian, having great implantation capacity, the femoral component consisting of a shaft which has a pointed distal end intended to be inserted into

le canal diaphysaire du fémur d'un patient et une extré-  the diaphyseal canal of a patient's femur and an

mité proximale qui est évasée et munie d'un siège pour un col détachable qui est prévu pour relier ledit composant fémoral audit élément cotyloïdien, caractérisé en ce que ledit arbre a, sur sa surface extérieure, au niveau de  proximal mite which is flared and provided with a seat for a detachable neck which is intended to connect said femoral component to said acetabular element, characterized in that said shaft has, on its outer surface, at the level of

l'extrémité proximale, plusieurs gorges adaptées pour fa-  the proximal end, several grooves adapted for fa-

ciliter l'ostéo-intégration dudit composant fémoral. D'autres caractéristiques et avantages de la  cilitate the osteointegration of said femoral component. Other features and advantages of the

présente invention apparaîtront à la lecture de la des-  present invention will appear on reading the

cription détaillée qui va suivre de modes préférés de ré-  detailed description which will follow preferred modes of

alisation, mais non-exclusifs, de la prothèse de hanche  hip, but not exclusive, prosthesis

selon la présente invention, représentés à titre d'exem-  according to the present invention, shown by way of example

ples non-limitatifs uniquement dans les dessins annexés, sur lesquels: la figure 1 est une vue d'un premier mode de  ples non-limiting only in the accompanying drawings, in which: Figure 1 is a view of a first mode of

réalisation d'un composant fémoral selon la présente in-  realization of a femoral component according to the present in-

vention, - la figure 2 est une vue d'un deuxième mode de  vention, - Figure 2 is a view of a second mode of

réalisation d'un composant fémoral selon la présente in-  realization of a femoral component according to the present in-

vention, - la figure 3 est une vue d'un troisième mode de réalisation d'un composant fémoral selon la présente invention,  vention, - Figure 3 is a view of a third embodiment of a femoral component according to the present invention,

- la figure 4 est une vue de l'élément cotyloï-  - Figure 4 is a view of the cotyloi element-

dien selon la présente invention.dien according to the present invention.

En se reportant aux figures ci-dessus et tout  Referring to the figures above and all

d'abord à la figure 1, le composant fémoral selon la pré-  first in FIG. 1, the femoral component according to the pre-

sente invention, indiqué dans un premier mode de réalisa-  invention, indicated in a first embodiment

tion de manière générale par la référence numérique 1, est constitué d'un arbre ajusté 2 qui a une extrémité  tion generally by reference numeral 1, consists of a fitted shaft 2 which has one end

distale pointue 3 munie d'une zone arrondie 4 afin d'em-  pointed distal 3 provided with a rounded area 4 in order to

pêcher un contact de la pointe avec le cortex antérieur lorsque le composant fémoral a été inséré dans le canal  fish for tip contact with the anterior cortex when the femoral component has been inserted into the canal

diaphysaire du fémur du patient.diaphyseal of the patient's femur.

L'extrémité proximale de l'arbre d'agencement de forme 2 est munie d'un collier 5 dont la hauteur varie conformément à la dimension de l'arbre 2, de manière à  The proximal end of the shape arrangement shaft 2 is provided with a collar 5, the height of which varies according to the dimension of the shaft 2, so as to

déterminer une distance correcte entre le centre de rota-  determine a correct distance between the center of rotation

tion de l'articulation et l'axe de l'arbre 2.  tion of the joint and the shaft axis 2.

De plus, l'arbre 2 a, à proximité de sa zone  In addition, tree 2 has, near its zone

proximale, plusieurs gorges 6 qui sont inclinées par rap-  proximal, several grooves 6 which are inclined with respect to

port à l'axe 7 de l'arbre 2. Lesdites gorges sont de pré- férence agencées pratiquement à 45 par rapport à l'axe 7 et sont prévues pour améliorer l'ostéo-intégration du composant fémoral 1 avec le fémur du patient. Dans le cas d'un jeune patient ou d'un patient dont l'état osseux fournit sinon une grande capacité de régénération, le composant fémoral 1 représenté sur la figure 1 est inséré sans utiliser de ciment et les gorges obliques 6 sont prévues pour faciliter l'ostéo-intégration, en permettant  worn on axis 7 of shaft 2. Said grooves are preferably arranged practically at 45 relative to axis 7 and are provided to improve the osteointegration of the femoral component 1 with the patient's femur. In the case of a young patient or a patient whose bone condition otherwise provides a great capacity for regeneration, the femoral component 1 shown in FIG. 1 is inserted without using cement and the oblique grooves 6 are provided to facilitate osteointegration, allowing

ainsi le blocage ferme du composant fémoral 1 à l'inté-  thus the firm blocking of the femoral component 1 inside

rieur du canal diaphysaire du fémur du patient.  of the diaphyseal canal of the patient's femur.

Avantageusement, la partie supérieure de l'ar-  Advantageously, the upper part of the ar-

bre 2, indiquée par la référence numérique 8, a un fini de surface produit par un sablage grossier et est revêtue  bre 2, indicated by reference numeral 8, has a surface finish produced by coarse sanding and is coated

d'une couche d'hydroxyapatite, de manière à faciliter en-  a layer of hydroxyapatite, so as to facilitate

core l'ostéo-intégration de l'arbre 2 dans ladite zone.  core the osteointegration of shaft 2 in said zone.

La zone distale 3, à la place, a un fini de  Distal area 3, instead, has a finish of

surface produit par un sablage fin, sans couche de revê-  surface produced by fine sandblasting, without coating layer

tement d'hydroxyapatite.hydroxyapatite.

La figure 2 est une vue d'un deuxième mode de  Figure 2 is a view of a second mode of

réalisation d'un composant fémoral selon la présente in-  realization of a femoral component according to the present in-

vention, indiqué de manière générale par la référence nu-  vention, indicated generally by the reference nu-

mérique 10. Dans ce mode de réalisation, dans lequel des références numériques identiques indiquent des éléments identiques à ceux représentés sur la figure i et sur les figures qui suivent, l'arbre 2 du composant fémoral 10 a deux poches latérales 15 qui sont agencées au niveau de l'extrémité proximale de l'arbre 2 et qui sont prévues  meric 10. In this embodiment, in which identical reference numerals indicate elements identical to those represented in FIG. i and in the figures which follow, the shaft 2 of the femoral component 10 has two lateral pockets 15 which are arranged at level of the proximal end of the shaft 2 and which are provided

pour permettre une stabilisation primaire par l'intermé-  to allow primary stabilization through

diaire de ciment osseux dans le canal diaphysaire du fé-  diary of bone cement in the diaphyseal canal of the

mur.Wall.

Les deux poches 15 forment une chambre qui est  The two pockets 15 form a chamber which is

pratiquement fermée afin de mettre le ciment sous pres-  practically closed in order to put the cement under pressure

sion. Les poches sont formées en tant que parties qui sont creusées par rapport à la surface extérieure de  if we. The pockets are formed as parts which are hollowed out from the outer surface of

l'arbre 2 et sont par conséquent adaptées pour être rem-  shaft 2 and are therefore suitable to be replaced

plies de ciment, qui est injecté dans un trou 17 par  plaice of cement, which is injected into a hole 17 by

l'intermédiaire d'un injecteur placé dans la cavité 16.  through an injector placed in the cavity 16.

Ladite cavité est agencée au niveau de l'extrémité proxi-  Said cavity is arranged at the proximal end

male de l'arbre 2 et est reliée, dans une zone située en  male of tree 2 and is connected, in an area located

aval, au trou 17 qui permet au ciment de passer simulta-  downstream, at hole 17 which allows the cement to pass simultaneously

nément à l'intérieur des deux poches 15, de manière à les remplir lorsque le composant fémoral 10 a été inséré dans  inside the two pockets 15, so as to fill them when the femoral component 10 has been inserted into

le canal diaphysaire du fémur.the diaphyseal canal of the femur.

De plus, le composant fémoral 10 selon la pré-  In addition, the femoral component 10 according to the pre-

sente invention a au moins un canal 18 destiné à mettre à  sente invention has at least one channel 18 intended to put

l'air libre et à rincer et évacuer chacune des poches 15.  in the open air and rinse and evacuate each of the pockets 15.

En pratique, les canaux 18 permettent de relier la zone des poches 15 à l'extérieur et par conséquent d'insérer dans lesdits canaux des tubes qui permettent de rincer et  In practice, the channels 18 make it possible to connect the zone of the pockets 15 to the outside and consequently to insert into said channels tubes which make it possible to rinse and

d'évacuer les poches 15 et permettent à l'air de s'échap-  to evacuate the pockets 15 and allow the air to escape

per lorsque le ciment est injecté à travers le trou 17  per when cement is injected through hole 17

jusqu'à l'intérieur des poches 15.  to the inside of the pockets 15.

La surface des poches 15 est polie, alors que la partie restante de la surface du composant fémoral 10  The surface of the pockets 15 is polished, while the remaining part of the surface of the femoral component 10

est de manière habituelle revêtue d'une couche d'hy-  is usually coated with a layer of hy-

droxyapatite. Comme sur la figure 1, l'arbre 2 de la figure 2  droxyapatite. As in figure 1, tree 2 of figure 2

comporte la zone arrondie 4 et le collier 5 dont la hau-  includes the rounded zone 4 and the collar 5, the height of which

teur augmente en fonction de la dimension de l'arbre 2.  tor increases with the size of the tree 2.

Comme mentionné, le composant fémoral 10 est  As mentioned, the femoral component 10 is

utilisé pour des patients dont l'état osseux est intermé-  used for patients with intermediate bone conditions

diaire entre un os ayant une grande capacité de régénéra-  between a bone with a great capacity for regeneration

tion et un os ayant une faible capacité de régénération.  tion and a bone with low regenerative capacity.

Le composant fémoral 10 est en fait cimenté à l'intérieur du canal diaphysaire du fémur dans une zone  The femoral component 10 is actually cemented inside the diaphyseal canal of the femur in an area

unique qui correspond aux poches 15 formées sur la sur-  unique which corresponds to the pockets 15 formed on the top

face extérieure de l'arbre 2 au niveau de la zone proxi-  outer face of the shaft 2 at the level of the proxi-

male de celui-ci.male of it.

La figure 3 représente un troisième mode de ré-  FIG. 3 represents a third mode of resolution.

alisation d'un composant fémoral selon la présente inven-  alization of a femoral component according to the present invention

tion, qui, dans ce cas, est de manière générale indiqué par la référence numérique 100 et a la particularité d'être adapté pour être implanté dans des patients dont l'état osseux n'assure pas une bonne régénération et pour lesquels le composant fémoral 100 doit par conséquent  tion, which, in this case, is generally indicated by the reference numeral 100 and has the distinction of being adapted to be implanted in patients whose bone condition does not ensure good regeneration and for which the femoral component 100 must therefore

être entièrement cimenté à l'intérieur du canal diaphy-  be fully cemented inside the diaphy-

saire du fémur du patient.saire the patient's femur.

Dans ce cas, la surface extérieure du composant fémoral 100 est entièrement polie et le composant fémoral  In this case, the outer surface of the femoral component 100 is fully polished and the femoral component

a une forme ajustée.has a fitted shape.

La figure 4 est une vue de l'élément cotyloï-  Figure 4 is a view of the acetabulum element.

dien, qui est prévu pour être relié aux composants fémo-  dien, which is intended to be connected to the femoral components

raux représentés précédemment sur les figures 1 à 3.  rates previously shown in Figures 1 to 3.

L'élément cotyloïdien est constitué d'un corps hémisphé-  The acetabular element consists of a hemispherical body

rique 11 qui a une zone polaire aplatie 12 et a, sur sa surface extérieure, deux ailettes 13 qui sont prévues pour être agencées dans une direction crânienne et sont formées de manière à faire saillie à partir d'une zone pratiquement médiane de la surface extérieure du corps hémisphérique 11 jusqu'à ce qu'elles parviennent à une  rique 11 which has a flattened polar region 12 and has, on its outer surface, two fins 13 which are intended to be arranged in a cranial direction and are formed so as to protrude from a practically median zone of the outer surface of the hemispherical body 11 until they reach a

certaine distance à partir du bord 14 du corps hémisphé-  certain distance from the edge 14 of the hemispherical body

rique 11, de sorte qu'elles ne font pas saillie à partir du siège du pelvis dans lequel l'élément cotyloïdien est inséré. La présence des ailettes permet en fait d'éviter des rotations non-voulues de l'élément cotyloïdien dans l'os pelvien, mais en même temps lesdites ailettes, étant  rique 11, so that they do not protrude from the seat of the pelvis in which the acetabular element is inserted. The presence of the fins in fact makes it possible to avoid unwanted rotations of the acetabular element in the pelvic bone, but at the same time said fins, being

plus courtes que les types d'ailettes habituelles, ne dé-  shorter than the usual fin types, does not

tériorent pas les tissus environnants du fait qu'il n'y a pas de risque qu'elles fassent saillie à partir de l'os  do not deteriorate surrounding tissue as there is no risk that they will protrude from the bone

pelvien dans lequel l'élément cotyloïdien est reçu.  pelvic area in which the acetabulum is received.

De manière commode, comme représenté, l'élément  Conveniently, as shown, the element

cotyloidien peut à son tour recevoir un élément hémisphé-  acetabulum can in turn receive a hemispherical element

rique qui est prévu pour recevoir la tête agencée sur le  risk which is intended to receive the head arranged on the

col séparable, qui, à son tour, est inséré dans le compo-  separable neck, which, in turn, is inserted into the compound

sant fémoral. L'élément hémisphérique reçu dans l'élément cotyloïdien permet d'éviter une friction entre l'élément  femoral health. The hemispherical element received in the acetabulum element avoids friction between the element

cotyloïdien et la tête sphérique agencée sur le col sépa-  acetabulum and the spherical head arranged on the separate neck

rable et par conséquent permet d'améliorer l'articulation de la hanche et surtout d'étendre la durée de vie de la prothèse.  and therefore improves the hip joint and above all extends the life of the prosthesis.

L'élément cotyloïdien est inséré dans l'os pel-  The acetabular element is inserted into the pel-

vien sans ciment, en utilisant les ailettes stabilisatri-  come without cement, using stabilizing fins

ces 13 empêchant la mise en rotation pour la fixation  these 13 preventing rotation for fixing

principale et une forme particulière de surface exté-  main and a particular form of exterior surface

rieure du corps hémisphérique 11 pour une fixation se-  of the hemispherical body 11 for securing

condaire. En particulier, ladite surface extérieure est  condaire. In particular, said outer surface is

d'un type poreux de manière à faciliter l'os-  of a porous type so as to facilitate bone-

téo-intégration.teo-integration.

Plus particulièrement, la surface extérieure du  More specifically, the exterior surface of the

corps hémisphérique 11 qui constitue l'élément cotyloï-  hemispherical body 11 which constitutes the acetabular element

dien est fournie par l'intermédiaire de microsphères de  dien is provided via microspheres of

titane qui fournissent en conséquence une surface po-  titanium which consequently provide a po-

reuse.reuse.

De manière commode, l'élément rapporté, c'est-à-dire l'élément hémisphérique qui peut être reçu dans le corps hémisphérique 11 de l'élément cotyloïdien  Conveniently, the insert, that is to say the hemispherical element which can be received in the hemispherical body 11 of the acetabular element

est constitué de céramique ou de polyéthylène.  is made of ceramic or polyethylene.

Dans un autre mode de réalisation, la surface  In another embodiment, the surface

extérieure du corps hémisphérique 11 de l'élément coty-  outside of the hemispherical body 11 of the coty-

loïdien comporte plusieurs trous 20 pour le passage de  Loidian has several holes 20 for the passage of

vis destinées à fixer l'élément cotyloïdien sur l'os pel-  screws to fix the acetabulum to the pelvic bone

vien. De manière commode, la surface extérieure du corps hémisphérique 11 peut être revêtue d'une couche d'hydroxyapatite. En pratique, il a été observé que la prothèse de hanche selon la présente invention aboutit entièrement aux buts et objectifs prévus, puisqu'elle permet, du fait du composant fémoral, de s'adapter à différents types  come. Conveniently, the outer surface of the hemispherical body 11 can be coated with a layer of hydroxyapatite. In practice, it has been observed that the hip prosthesis according to the present invention fully achieves the intended goals and objectives, since it allows, because of the femoral component, to adapt to different types

d'os du patient, une implantation à la fois avec du ci-  patient's bone, one implantation at a time with

ment et sans ciment, en fonction du type d'état osseux.  cement-free, depending on the type of bone condition.

L'élément cotyloïdien est en outre muni d'ailettes qui sont plus courtes que les types d'ailette habituels et permettent d'éviter une détérioration des tissus voisins,  The acetabular element is also provided with fins which are shorter than the usual types of fin and make it possible to avoid deterioration of the neighboring tissues,

lorsqu'il est implanté dans l'os pelvien du patient.  when implanted into the patient's pelvic bone.

La prothèse de hanche ainsi conçue est suscep-  The hip prosthesis thus designed is suscep-

tible de subir de nombreuses modifications et variations, qui sont toutes dans la portée du concept de la présente invention, tous les détails pouvant être remplacés par  tible to undergo many modifications and variations, which are all within the scope of the concept of the present invention, all the details can be replaced by

d'autres éléments techniquement équivalents.  other technically equivalent elements.

En pratique, les matériaux utilisés, pour au-  In practice, the materials used, for

tant qu'ils sont compatibles avec l'utilisation spécifi-  as long as they are compatible with the specific use

que, ainsi que les dimensions, peuvent être quelconques  that, as well as the dimensions, can be any

en fonction des impératifs et de l'état de la technique.  depending on the requirements and the state of the art.

Claims (26)

REVENDICATIONS 1. Prothèse de hanche ayant un composant fémo-  1. Hip prosthesis having a femoral component ral (1) et un élément cotyloïdien associé, ayant une grande faculté d'implantation, le composant fémoral (1; 10; 100) étant constitué d'un arbre (2) qui a une extré- mité distale pointue (3) prévue pour être insérée dans le canal diaphysaire du fémur d'un patient et une extrémité proximale qui est évasée et munie d'un siège pour un col  ral (1) and an associated acetabular element, having great implantation capacity, the femoral component (1; 10; 100) consisting of a shaft (2) which has a pointed distal end (3) intended for be inserted into the diaphyseal canal of a patient's femur and a proximal end which is flared and provided with a seat for a cervix séparable qui est prévu pour relier ledit composant fémo-  separable which is provided to connect said femoral component ral à l'élément cotyloïdien, caractérisée en ce que l'ar-  ral to the acetabulum, characterized in that the ar- bre (2) a, sur sa surface extérieure, au niveau de l'ex-  bre (2) has, on its outer surface, at the level of the former trémité proximale, plusieurs gorges (6) qui sont adaptées  proximal end, several grooves (6) which are adapted pour faciliter l'ostéo-intégration dudit composant fémo-  to facilitate the osteointegration of said femoral component ral.  ral. 2. Prothèse de hanche selon la revendication 1, caractérisée en ce que les gorges (6) sont agencées en2. hip prosthesis according to claim 1, characterized in that the grooves (6) are arranged in formant un angle par rapport à l'axe de l'arbre.  forming an angle with respect to the axis of the tree. 3. Prothèse de hanche selon la revendication 1,  3. hip prosthesis according to claim 1, caractérisée en ce que l'arbre a, au niveau de son extré-  characterized in that the tree has, at its level mité proximale, un collier (5) dont la hauteur augmente  proximal mite, a collar (5) whose height increases en fonction de la dimension de l'arbre.  depending on the size of the tree. 4. Prothèse de hanche selon la revendication 1,  4. hip prosthesis according to claim 1, caractérisée en ce que la surface de l'arbre (2) au ni-  characterized in that the surface of the shaft (2) at the veau de l'extrémité proximale est finie par un sablage  calf from the proximal end is finished by sandblasting grossier et à l'aide d'une couche de revêtement en hy-  coarse and using a coating of hy droxyapatite, la surface de l'arbre au niveau de l'extré-  droxyapatite, the surface of the tree at the level of the mité distale (3) étant finie par un sablage fin.  distal mite (3) being finished by fine sanding. 5. Prothèse de hanche selon la revendication 1, caractérisée en ce que l'extrémité distale (3) de l'arbre  5. Hip prosthesis according to claim 1, characterized in that the distal end (3) of the shaft du composant fémoral a une zone arrondie.  of the femoral component has a rounded area. 6. Prothèse de hanche selon la revendication 1,  6. hip prosthesis according to claim 1, caractérisée en ce que l'élément cotyloïdien est consti-  characterized in that the acetabular element is tué d'un corps hémisphérique (11) ayant une zone polaire  killed in a hemispherical body (11) having a polar region aplatie (12), sur la surface extérieure duquel sont si-  flattened (12), on the outer surface of which are tuées deux ailettes (13) empêchant une mise en rotation, qui font saillie à partir d'une zone pratiquement médiane du corps hémisphérique à une distance préétablie à partir du bord (14) du corps hémisphérique qui se trouve le plus  killed two rotation preventing fins (13) which protrude from a substantially median area of the hemispherical body at a predetermined distance from the edge (14) of the hemispherical body which is most loin à partir de la zone polaire aplatie.  away from the flattened polar area. 7. Prothèse de hanche selon la revendication 6, caractérisée en ce que la surface extérieure de l'élément  7. hip prosthesis according to claim 6, characterized in that the outer surface of the element cotyloïdien est munie d'un fini poreux.  acetabulum has a porous finish. 8. Prothèse de hanche selon la revendication 7, caractérisée en ce que le fini poreux est fourni par  8. Hip prosthesis according to claim 7, characterized in that the porous finish is provided by l'intermédiaire de microsphères de titane.  through titanium microspheres. 9. Prothèse de hanche selon la revendication 8,  9. hip prosthesis according to claim 8, caractérisée en ce que la surface extérieure du corps hé-  characterized in that the outer surface of the body misphérique (11) de l'élément cotyloïdien comporte plu-  the spherical element (11) of the acetabular element has more sieurs trous (20) pour le passage de vis destinées à fixer l'élément cotyloïdien sur l'os pelvien, la surface  holes (20) for the passage of screws intended to fix the acetabular element on the pelvic bone, the surface extérieure étant en outre revêtue d'une couche d'hy-  being additionally coated with a layer of hy- droxyapatite.droxyapatite. 10. Prothèse de hanche ayant un composant fémo-  10. Hip prosthesis having a femoral component ral (10) et un élément cotyloïdien correspondant, ayant une grande faculté d'implantation, le composant fémoral  ral (10) and a corresponding acetabular element, having great implantation capacity, the femoral component étant constitué d'un arbre (2) qui a une extrémité dis-  consisting of a shaft (2) which has a dis- tale pointue (3) prévue pour être insérée dans le canal  pointed plate (3) intended to be inserted into the channel diaphysaire du fémur d'un patient et une extrémité proxi-  diaphyseal of a patient's femur and a proximal end male évasée munie d'un siège pour un col séparable qui est prévu pour relier le composant fémoral à l'élément cotyloïdien, caractérisée en ce que l'arbre (2) a sur sa  flared male provided with a seat for a separable neck which is intended to connect the femoral component to the acetabular element, characterized in that the shaft (2) has on its surface extérieure et au niveau de son extrémité proxi-  outer surface and at its near end male, deux poches latérales (15) mutuellement opposées  male, two mutually opposite side pockets (15) afin de fournir, par cémentation osseuse, la stabilisa-  in order to provide, by bone cementation, stabilization tion principale du composant fémoral.  main tion of the femoral component. 11. Prothèse de hanche selon la revendication , caractérisée en ce que les poches latérales (15) sont  11. Hip prosthesis according to claim, characterized in that the side pockets (15) are reliées à un trou traversant (17) dont l'axe est prati-  connected to a through hole (17) whose axis is practi- quement perpendiculaire à l'axe de l'arbre, le trou étant à son tour relié à un trou d'injection de ciment (16)  only perpendicular to the axis of the shaft, the hole being in turn connected to a cement injection hole (16) agencé au niveau de l'extrémité proximale de l'arbre.  arranged at the proximal end of the shaft. 12. Prothèse de hanche selon la revendication 11, caractérisée en ce que ladite extrémité proximale de l'arbre a au moins une paire supplémentaire de trous (18) agencés au niveau desdites poches latérales et reliés à celles-ci, chacun des trous (18) permettant l'insertion  12. hip prosthesis according to claim 11, characterized in that said proximal end of the shaft has at least one additional pair of holes (18) arranged at the level of said side pockets and connected to these, each of the holes (18 ) allowing insertion d'un tube adapté pour relier la poche latérale corres-  a tube adapted to connect the corresponding side pocket pondante à l'extérieur de l'arbre.  laying outside the tree. 13. Prothèse de hanche selon la revendication , caractérisée en ce que les poches latérales (15) sont munies d'un fini poli, la partie restante de la surface  13. Hip prosthesis according to claim, characterized in that the side pockets (15) are provided with a polished finish, the remaining part of the surface extérieure de l'arbre étant revêtue d'une couche d'hy-  exterior of the tree being coated with a layer of hy- droxyapatite.  droxyapatite. 14. Prothèse de hanche selon la revendication 12, caractérisée en ce que l'arbre (2) a, au niveau de son extrémité proximale, un collier (5) dont la hauteur14. hip prosthesis according to claim 12, characterized in that the shaft (2) has, at its proximal end, a collar (5) whose height augmente en fonction de la dimension de l'arbre.  increases with the size of the tree. 15. Prothèse de hanche selon la revendication 10, caractérisée en ce que l'extrémité distale (3) de  15. hip prosthesis according to claim 10, characterized in that the distal end (3) of l'arbre du composant fémoral a une zone arrondie.  the shaft of the femoral component has a rounded area. 16. Prothèse de hanche selon la revendication , caractérisée en ce que l'élément cotyloïdien est constitué d'un corps hémisphérique (11), ayant une zone polaire aplatie (12), sur la surface extérieure duquel sont agencées deux ailettes (13) empêchant une mise en  16. hip prosthesis according to claim, characterized in that the acetabular element consists of a hemispherical body (11), having a flattened polar region (12), on the outer surface of which are arranged two fins (13) preventing a setting rotation qui font saillie à partir d'une zone sensible-  rotation that protrude from a sensitive area- ment médiane du corps hémisphérique à une distance pré-  median hemispherical body at a pre- établie à partir du bord (14) du corps hémisphérique qui  established from the edge (14) of the hemispherical body which se trouve le plus loin de la zone polaire aplatie (12).  is furthest from the flattened polar region (12). 17. Prothèse de hanche selon la revendication 16, caractérisée en ce que la surface extérieure de  17. Hip prosthesis according to claim 16, characterized in that the outer surface of l'élément cotyloidien est munie d'un fini poreux.  the acetabular element has a porous finish. 18. Prothèse de hanche selon la revendication 17, caractérisée en ce que le fini poreux est fourni par  18. Hip prosthesis according to claim 17, characterized in that the porous finish is provided by l'intermédiaire de microsphères de titane.  through titanium microspheres. 19. Prothèse de hanche selon la revendication 18, caractérisée en ce que la surface extérieure du corps hémisphérique de l'élément cotyloidien a plusieurs trous (20) pour le passage de vis destinées à fixer l'élément cotyloidien sur l'os pelvien, la surface extérieure étant  19. A hip prosthesis according to claim 18, characterized in that the external surface of the hemispherical body of the acetabular element has several holes (20) for the passage of screws intended to fix the acetabular element on the pelvic bone, the outer surface being en outre revêtue d'une couche d'hydroxyapatite.  further coated with a layer of hydroxyapatite. 20. Prothèse de hanche ayant un composant fémo-  20. Hip prosthesis having a femoral component ral (100) et un élément cotyloidien correspondant, ayant une grande faculté d'implantation, le composant fémoral  ral (100) and a corresponding acetabular element, having great implantation capacity, the femoral component étant constitué d'un arbre (2) qui a une extrémité dis-  consisting of a shaft (2) which has a dis- tale pointue (3) prévue pour être insérée dans le canal  pointed plate (3) intended to be inserted into the channel diaphysaire du fémur d'un patient et une extrémité proxi-  diaphyseal of a patient's femur and a proximal end male qui est évasée et munie d'un siège pour un col amo-  male who is flared and provided with a seat for a collar amo- vible qui est prévu pour relier le composant fémoral à l'élément cotyloïdien, caractérisée en ce que l'arbre a  vible which is intended to connect the femoral component to the acetabulum, characterized in that the shaft has une surface extérieure polie et est prévu pour être ci-  a polished exterior surface and is intended to be menté à l'intérieur du canal diaphysaire du fémur du pa-  lying inside the diaphyseal canal of the femur of the pa- tient.  is holding. 21. Prothèse de hanche selon la revendication , caractérisée en ce que l'arbre (2) a, au niveau de son extrémité proximale, un collier (5) dont la hauteur21. Hip prosthesis according to claim, characterized in that the shaft (2) has, at its proximal end, a collar (5) whose height augmente en fonction de la dimension de l'arbre.  increases with the size of the tree. 22. Prothèse de hanche selon la revendication , caractérisée en ce que l'extrémité distale (3) de  22. Hip prosthesis according to claim, characterized in that the distal end (3) of l'arbre (2) du composant fémoral a une zone arrondie.  the shaft (2) of the femoral component has a rounded area. 23. Prothèse de hanche selon la revendication 20, caractérisée en ce que l'élément cotyloidien est constitué d'un corps hémisphérique (11) muni d'une zone polaire aplatie (12), sur la surface extérieure duquel sont agencées deux ailettes (13) empêchant une mise en  23. hip prosthesis according to claim 20, characterized in that the acetabular element consists of a hemispherical body (11) provided with a flattened polar region (12), on the outer surface of which are arranged two fins (13 ) preventing a setting rotation qui font saillie à partir d'une zone sensible-  rotation that protrude from a sensitive area- ment médiane du corps hémisphérique à une distance pré-  median hemispherical body at a pre- établie à partir du bord (14) du corps hémisphérique qui  established from the edge (14) of the hemispherical body which se trouve le plus loin de la zone polaire aplatie.  is furthest from the flattened polar region. 24. Prothèse de hanche selon la revendication 23, caractérisée en ce que la surface extérieure de l'élément cotyloïdien est munie d'un fini poreux.  24. Hip prosthesis according to claim 23, characterized in that the external surface of the acetabular element is provided with a porous finish. 25. Prothèse de hanche selon la revendication 24, caractérisée en ce que le fini poreux est fourni par25. Hip prosthesis according to claim 24, characterized in that the porous finish is provided by l'intermédiaire de microsphères de titane.  through titanium microspheres. 26. Prothèse de hanche selon la revendication 25, caractérisée en ce que la surface extérieure du corps hémisphérique de l'élément cotyloïdien comporte plusieurs trous (20) pour le passage de vis destinées à fixer  26. Hip prosthesis according to claim 25, characterized in that the external surface of the hemispherical body of the acetabulum element has several holes (20) for the passage of screws intended to fix l'élément cotyloïdien sur l'os pelvien, la surface exté-  the acetabulum on the pelvic bone, the outer surface rieure étant en outre revêtue d'une couche d'hydroxyapa-  being further coated with a layer of hydroxyapa- tite.tite.
FR0008497A 1999-07-02 2000-06-30 HIP PROSTHESIS WITH FEMALE COMPONENT AND COTYLOID ELEMENT, WITH LARGE FACILITY OF IMPLANTATION Expired - Fee Related FR2795626B1 (en)

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GB9915604A GB2351671B (en) 1999-07-02 1999-07-02 Hip prosthesis with femoral component and corresponding cotyloid element with high implantation adaptability

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PT103404A (en) * 2005-12-21 2007-06-29 Univ Aveiro COMBINED FIXING BONE IMPLANT
RU2536111C1 (en) * 2013-05-31 2014-12-20 Федеральное государственное бюджетное учреждение "Российский ордена Трудового Красного Знамени научно-исследовательский институт травматологии и ортопедии им. Р.Р. Вредена" Министерства здравоохранения Российской Федерации (ФГБУ "РНИИТО им. Р.Р. Вредена" Минздрава России) Method for introducing bone cement into femoral canal in hip replacement with cement fixation of hip component

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