FR2668923A1 - Cup for acetabular implantation, and hip prosthesis comprising this cup - Google Patents

Cup for acetabular implantation, and hip prosthesis comprising this cup Download PDF

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Publication number
FR2668923A1
FR2668923A1 FR9014073A FR9014073A FR2668923A1 FR 2668923 A1 FR2668923 A1 FR 2668923A1 FR 9014073 A FR9014073 A FR 9014073A FR 9014073 A FR9014073 A FR 9014073A FR 2668923 A1 FR2668923 A1 FR 2668923A1
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FR
France
Prior art keywords
cup
cup according
conical part
insert
heel
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
FR9014073A
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French (fr)
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FR2668923B1 (en
Inventor
Perisse Pierre
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TECH AVANCEES SARL
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TECH AVANCEES SARL
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Filing date
Publication date
Application filed by TECH AVANCEES SARL filed Critical TECH AVANCEES SARL
Priority to FR9014073A priority Critical patent/FR2668923B1/en
Publication of FR2668923A1 publication Critical patent/FR2668923A1/en
Application granted granted Critical
Publication of FR2668923B1 publication Critical patent/FR2668923B1/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
    • 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
    • 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
    • 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
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30487—Circumferential cooperating grooves and beads on cooperating lateral surfaces of a mainly longitudinal connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/305—Snap connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30787—Plurality of holes inclined obliquely with respect to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed
    • 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
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    • A61F2002/3403—Polar aperture
    • 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
    • A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • A61F2002/342—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface the outer shell having circumferential protrusions parallel to the equatorial plane, e.g. circumferential fins or wings
    • 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
    • A61F2002/3429—Acetabular cups with an integral peripheral collar or flange, e.g. oriented away from the shell centre line
    • 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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    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
    • A61F2002/3462—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped having a frustoconical external shape, e.g. entirely frustoconical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A—HUMAN NECESSITIES
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    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • 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
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    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—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
    • 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
    • A—HUMAN NECESSITIES
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    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys

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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 metal cup for acetabular implantation, the upper surface (2) of which cup is of a general spherical shape (7) and is equipped with a plurality of orifices (3) for the passage of screws, is characterised by the fact that the upper spherical surface (7) is interrupted before the equatorial plane and is extended by a conical part (6) allowing it to be anchored with force in the acetabular cavity.

Description

La présente invention concerne une cupule pour implantation cotyloïdienne ainsi que les prothèses de hanche la comportant. The present invention relates to a cup for acetabular implantation and to hip prostheses comprising it.

Les prothèses totales de hanche comprennent deux parties coopérantes: une partie inférieure insérée dans le fémur et une partie supérieure fixée dans le bassin. Ces deux parties sont conformées pour créer entre elles une surface de contact reproduisant l'articulation de la hanche. Total hip prostheses include two cooperating parts: a lower part inserted into the femur and an upper part fixed in the pelvis. These two parts are shaped to create between them a contact surface reproducing the hip joint.

L'invention a pour objet de perfectionner la partie supérieure d'une telle prothèse de hanche. Cette partie, dénommée cupule, comprend de manière connue un organe métallique qui se fixe dans le cotyle et un organe en matière synthétique ou insert, qui se loge dans l'organe métallique. The object of the invention is to improve the upper part of such a hip prosthesis. This part, called cup, comprises in known manner a metal member which is fixed in the acetabulum and a member of synthetic material or insert, which is housed in the metal member.

L'organe métallique est de forme générale hémisphérique. The metallic organ is generally hemispherical.

La cavité interne de l'organe en matière synthétique coopère avec un élément en céramique prévu sur la prothèse de fémur. The internal cavity of the synthetic material organ cooperates with a ceramic element provided on the femur prosthesis.

Jusqu'à ce jour il existe un problème de fixation des cupules métalliques dans le cotyle. To date there is a problem of fixing the metal cups in the acetabulum.

Pour assurer la stabilité, on utilise des vis dites pilotis qui traversent la partie supérieure de la cupule, laquelle est pourvue à cet effet d'un nombre correspondant d'orifices. To ensure stability, so-called pilot screws are used which pass through the upper part of the cup, which is provided for this purpose with a corresponding number of orifices.

Le chirurgien oriente et met en place les vis pilotis généralement à l'aide d'un tournevis à cardan. The surgeon directs and places the piloted screws, generally using a cardan screwdriver.

Certaines cupules métalliques connues ont la forme d'une hémisphère dont la surface extérieure est entièrement lisse, de sorte que la fixation dans le cotyle ne se réalise que par les vis. On a constaté que cette fixation n'était pas toujours suffisante. C'est pourquoi, on a déjà proposé dans la technique antérieure de munir l'embase de la cupule d'un filetage extérieur, qui permet son vissage dans l'os.  Certain known metal cups have the shape of a hemisphere whose outer surface is entirely smooth, so that the fixation in the acetabulum is only achieved by screws. It was found that this fixation was not always sufficient. This is why, it has already been proposed in the prior art to provide the base of the cup with an external thread, which allows it to be screwed into the bone.

Le pas du filetage extérieur est alors relativement important pour avoir une fixation stable. The pitch of the external thread is then relatively large in order to have a stable fixing.

La présente invention propose une cupule métallique pour implantation cotyloïdienne dont la surface supérieure est de forme générale sphérique et est munie d'une pluralité d'orifices pour le passage de vis, ladite cupule étant caractérisée par le fait que la surface sphérique supérieure est interrompue avant le plan équatorial et est prolongée par une partie conique permettant un ancrage à force dans la cavité cotyloïdienne. The present invention provides a metal cup for acetabular implantation, the upper surface of which is generally spherical in shape and is provided with a plurality of holes for the passage of screws, said cup being characterized in that the upper spherical surface is interrupted before the equatorial plane and is extended by a conical part allowing a forceful anchoring in the acetabular cavity.

La présente invention concerne également les caractéristiques ci-après considérées isolément ou selon toutes leurs combinaisons techniquement possibles:
- la partie conique se situe pratiquement dans le prolongement de la surface sphérique, la génératrice du cône étant sensiblement tangente à cette surface;
- la partie conique comporte une série de stries parallèles entre elles;
- la partie conique est lisse;
- la partie conique représente jusqu'à un tiers de la surface totale;
- la partie conique se termine par un talon pour coopération avec un insert;
- le talon est discontinu;
- la partie conique présente des crans répartis à la périphérie;
- l'insert présente à sa base un bourrelet qui s'applique contre le talon de la cupule et protège celui-ci en le coiffant;
- le bourrelet comporte des parties ajourées et des tenons de rigidification;;
- des fenêtres sont interposées dans le talon;
- la cupule renferme une nervure interne destinée à recevoir une gorge de l'insert lors de l'encliquetage de l'insert dans la cupule.The present invention also relates to the characteristics below considered in isolation or in all their technically possible combinations:
- The conical part is located practically in the extension of the spherical surface, the generatrix of the cone being substantially tangent to this surface;
- The conical part has a series of parallel ridges between them;
- the conical part is smooth;
- the conical part represents up to a third of the total surface;
- the conical part ends in a heel for cooperation with an insert;
- the heel is discontinuous;
- The conical part has notches distributed at the periphery;
- The insert has at its base a bead which is applied against the heel of the cup and protects it by styling it;
- the bead has openwork parts and stiffening pins;
- windows are interposed in the heel;
- The cup contains an internal rib intended to receive a groove of the insert when the insert is snapped into the cup.

Diverses avantages et caractéristiques de la présente invention ressortiront de la description détaillée ci-après faite en regard des dessins annexés sur lesquels:
Figure l est une vue de face de la cupule de l'invention.Various advantages and characteristics of the present invention will emerge from the detailed description below made with reference to the appended drawings in which:
Figure l is a front view of the cup of the invention.

Figure 2 est une vue de dessous prise suivant la ligne Il-Il de la Figure 1. Figure 2 is a bottom view taken along the line Il-Il of Figure 1.

Figure 3 est une coupe prise suivant la ligne III-III de la Figure 2. Figure 3 is a section taken along line III-III of Figure 2.

Figure 4 est une vue de face de l'insert de l'invention. Figure 4 is a front view of the insert of the invention.

Figure 5 est une vue de dessus prise suivant la ligne
V-V de la Figure 4.Figure 5 is a top view taken along the line
VV of Figure 4.

Figure 6 est une coupe prise suivant la ligne VI-VI de la Figure 5. Figure 6 is a section taken on the line VI-VI of Figure 5.

Figure 7 est une coupe de la cupule et de l'insert assemblés. Figure 7 is a section of the assembled cup and insert.

Figure 8 est une vue de face d'une variante de réalisation de l'insert. Figure 8 is a front view of an alternative embodiment of the insert.

Figure 9 est une vue de face d'une variante de réalisation de la cupule. Figure 9 is a front view of an alternative embodiment of the cup.

Aux dessins où les mêmes symboles de référence désignent des parties analogues, la cupule métallique de la présente invention, qui porte la référence 1, est plus particulièrement illustrée sur les Figures 1, 2, 3 et 9, tandis que l'insert monobloc, coopérant avec cette cupule 1 et désigné par la référence 8, est représenté sur les Figures 4, 5, 6 et 8. In the drawings in which the same reference symbols designate similar parts, the metal cup of the present invention, which bears the reference 1, is more particularly illustrated in FIGS. 1, 2, 3 and 9, while the monobloc insert, cooperating with this cup 1 and designated by the reference 8, is shown in Figures 4, 5, 6 and 8.

La cupule 1, qui est en matériau métallique, présente un corps 4.  The cup 1, which is made of metallic material, has a body 4.

Le corps 4 de la cupule 1 comprend une surface supérieure externe 2 de forme générale hémisphérique, pourvue d'une pluralité d'orifices 3. The body 4 of the cup 1 comprises an upper external surface 2 of generally hemispherical shape, provided with a plurality of orifices 3.

L'embase 5 du corps 4 présente une partie conique 6 prolongeant la partie sphérique 7. The base 5 of the body 4 has a conical part 6 extending the spherical part 7.

La partie conique 6 peut être lisse comme illustré sur la Figure 9 ou être munie d'une série de stries 10 peu profondes. The conical part 6 can be smooth as illustrated in FIG. 9 or be provided with a series of shallow ridges 10.

L'embase 5 se termine par un talon ll destiné assurer la coopération lors de l'introduction de l'insert monobloc 8 dans la partie interne 9 de la cupule métallique 1. The base 5 ends with a heel ll intended to ensure cooperation during the introduction of the one-piece insert 8 into the internal part 9 of the metal cup 1.

La partie conique 6 comprend des crans 12 répartis uniformément à la périphérie. The conical part 6 comprises notches 12 distributed uniformly at the periphery.

Le talon ll est discontinu et plusieurs fenêtres 16 sont prévues entre les parties de talon 11. The heel 11 is discontinuous and several windows 16 are provided between the heel parts 11.

Dans un mode de réalisation non représenté, le talon ll pourrait être réalisé de façon continue et il n'y aurait pas dans ce cas la prévision des fenêtres 16. In an embodiment not shown, the heel 11 could be produced continuously and in this case there would be no provision for the windows 16.

L'insert monobloc 8 est en un matériau synthétique. Il s'agit notamment de matière plastique du genre polyéthylène. The one-piece insert 8 is made of a synthetic material. These include plastic of the polyethylene type.

Cet insert monobloc 8 présente sur sa surface externe une gorge 18 destinée à venir s'adapter dans une nervure interne 17 de la cupule métallique 1.This one-piece insert 8 has on its external surface a groove 18 intended to come to fit in an internal rib 17 of the metal cup 1.

L'insert monobloc 8 comprend un bourrelet 13. Le bourrelet 13 peut être muni de parties ajourées 14 situées en regard des tenons 15. The one-piece insert 8 comprises a bead 13. The bead 13 may be provided with perforated parts 14 situated opposite the tenons 15.

La Figure 7 montre l'adaptation de l'insert monobloc 8 dans la cupule métallique 1 de la présente invention. Figure 7 shows the adaptation of the one-piece insert 8 in the metal cup 1 of the present invention.

Pour obtenir une fixation sûre sans possibilité de rotation du bourrelet 13, les tenons 15 sont disposés en regard des fenêtres 16 du talon 11; on assure ainsi un effet d'encliquetage de l'insert monobloc 8 dans la cupule métallique 1 en raison de la coopération des formes.  To obtain a secure fixing without the possibility of rotation of the bead 13, the pins 15 are arranged opposite the windows 16 of the heel 11; this ensures a latching effect of the one-piece insert 8 in the metal cup 1 due to the cooperation of the shapes.

La particularité inventive réside dans la forme et la structure de la cupule métallique 1, qui permettent un ancrage ou coincement stable et résistant dans le cotyle ainsi qu'une très bonne adaptation de l'insert 8, en polyéthylène par exemple
La partie conique 6 prolonge la surface sphérique 7.The inventive feature lies in the shape and structure of the metal cup 1, which allow stable and resistant anchoring or wedging in the acetabulum as well as a very good adaptation of the insert 8, made of polyethylene for example
The conical part 6 extends the spherical surface 7.

L'étendue de cette partie conique peut représenter jusqu'au tiers de la surface totale externe de la cupule 1. L'angle du cône est choisi de manière que la partie conique 6 prolonge la surface sphérique 7 selon un plan sensiblement tangent à celle-ci. L'angle au sommet du cône peut être variable, par exemple de 10 à 300 environ.The extent of this conical part can represent up to one third of the total external surface of the cup 1. The angle of the cone is chosen so that the conical part 6 extends the spherical surface 7 along a plane substantially tangent to it. this. The angle at the top of the cone can be variable, for example from 10 to 300 approximately.

On décrit ci-après la technique d'application de la cupule 1 de la présente invention. The technique for applying the cup 1 of the present invention is described below.

En premier lieu, le chirurgien prépare la cavité cotyloïdienne à la fraise. Il introduit dans cette cavité une cupule d'essai d'un diamètre égal à celui de la fraise, ce qui permet de contrôler le bon contact périphérique os/cupule. First, the surgeon prepares the acetabulum for the strawberry. He introduces into this cavity a test cup with a diameter equal to that of the cutter, which makes it possible to check the good peripheral bone / cup contact.

Le chirurgien ancre ensuite à force la cupule 1 de l'invention dont la dimension est quelque peu supérieure à celle de la cavité fraisée pour assurer une stabilité parfaite. The surgeon then forcibly anchors the cup 1 of the invention, the dimension of which is somewhat greater than that of the milled cavity to ensure perfect stability.

Le chirurgien peut alors orienter et mettre en place les vis en utilisant les orifices 3 et à cet effet, il utilise généralement un tournevis à cardans. The surgeon can then orient and install the screws using the holes 3 and for this purpose, he generally uses a cardan screwdriver.

Deux à trois vis sont suffisantes pour compléter la stabilité du cotyle. Enfin, le chirurgien réalise l'encliquetage de l'insert monobloc 8 dans la cupule métallique 1. Two to three screws are sufficient to complete the stability of the acetabulum. Finally, the surgeon snaps the one-piece insert 8 into the metal cup 1.

La cupule métallique de la présente invention assure grâce à son ancrage à force qui est dû à sa géométrie particulière, savoir la combinaison d'une partie conique et d'une partie sphérique, une adaptation quasiment parfaite sur toute la surface du cotyle.  The metal cup of the present invention ensures, thanks to its force anchoring which is due to its particular geometry, namely the combination of a conical part and a spherical part, an almost perfect adaptation over the entire surface of the acetabulum.

L'invention n'est pas limitée aux modes de réalisation représentés et décrits en détails et diverses modifications peuvent y être apportées sans sortir de son cadre. The invention is not limited to the embodiments shown and described in detail and various modifications can be made thereto without departing from its scope.

Les signes de référence insérés après les caractéristiques techniques mentionnées dans les revendications, ont pour seul but de faciliter la compréhension de ces dernières, et n'en limitent aucunement la portée.  The reference signs inserted after the technical characteristics mentioned in the claims, have the sole purpose of facilitating the understanding of the latter, and in no way limit their scope.

Claims (14)

REVENDICATIONS 1. Cupule métallique pour implantation cotyloidienne dont la surface supérieure (2) est de forme générale sphérique (7) et est munie d'une pluralité d'orifices (3) pour le passage de vis, ladite cupule étant caractérisée par le fait que la surface sphérique supérieure (7) est interrompue avant le plan équatorial et est prolongée par une partie conique (6), permettant un ancrage à force dans la cavité cotyloïdienne. 1. Metal cup for acetabular implantation, the upper surface (2) of which is generally spherical (7) and is provided with a plurality of orifices (3) for the passage of screws, said cup being characterized in that the upper spherical surface (7) is interrupted before the equatorial plane and is extended by a conical part (6), allowing forceful anchoring in the acetabular cavity. 2. Cupule selon la revendication l, caractérisée en ce que la partie conique (6) se situe pratiquement dans le prolongement de la surface sphérique (7), la génératrice du cône étant sensiblement tangente à cette surface. 2. Cup according to claim l, characterized in that the conical part (6) is located practically in the extension of the spherical surface (7), the generatrix of the cone being substantially tangent to this surface. 3. Cupule selon l'une des revendications l ou 2, caractérisée en ce que la partie conique (6) comporte une série de stries (10) parallèles entre elles. 3. Cup according to one of claims l or 2, characterized in that the conical part (6) has a series of ridges (10) parallel to each other. 4. Cupule selon l'une des revendications 1 ou 2, caractérisée en ce que la partie conique (6) est lisse. 4. Cup according to one of claims 1 or 2, characterized in that the conical part (6) is smooth. 5. Cupule selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la partie conique (6) représente jusqu'au tiers de la surface totale. 5. Cup according to any one of claims 1 to 4, characterized in that the conical part (6) represents up to a third of the total surface. 6. Cupule selon l'une quelconque des revendications l à 5, caractérisée en ce que la partie conique se termine par un talon (11) pour coopération avec un insert (8). 6. Cup according to any one of claims l to 5, characterized in that the conical part ends in a heel (11) for cooperation with an insert (8). 7. Cupule selon la revendication 6, caractérisée en ce que le talon (ll) est discontinu. 7. Cup according to claim 6, characterized in that the heel (ll) is discontinuous. 8. Cupule selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la partie conique (6) présente des crans (12) répartis à sa périphérie. 8. Cup according to any one of claims 1 to 7, characterized in that the conical part (6) has notches (12) distributed around its periphery. 9. Cupule selon l'une quelconque des revendications 6 à 8, caractérisée en ce que l'insert (8) présente à sa base un bourrelet (13) qui s'applique contre le talon (11) de la cupule (1) et protège celui-ci en le coiffant.  9. Cup according to any one of claims 6 to 8, characterized in that the insert (8) has at its base a bead (13) which is applied against the heel (11) of the cup (1) and protects it by styling it. 10. Cupule selon la revendication 9, caractérisée en ce que le bourrelet (13) comporte des parties ajourées (14) et des tenons (15) de rigidification. 10. Cup according to claim 9, characterized in that the bead (13) has perforated parts (14) and tenons (15) of stiffening. 11. Cupule selon l'une des revendications 9 ou 10, caractérisée en ce que des fenêtres (16) sont interposées dans le talon (li).  11. Cup according to one of claims 9 or 10, characterized in that windows (16) are interposed in the heel (li). 12. Cupule selon l'une quelconque des revendications 1 à 11, caractérisée en ce qu'elle renferme une nervure interne (17) destinée à recevoir une gorge (18) de l'insert (8) lors de l'encliquetage dudit insert (8) dans la cupule (1). 12. Cup according to any one of claims 1 to 11, characterized in that it contains an internal rib (17) intended to receive a groove (18) of the insert (8) during the latching of said insert ( 8) in the cup (1). 13. Cupule pour prothèse de hanche comportant la combinaison de la cupule métallique (1) et de l'insert (8). 13. Hip prosthesis cup comprising the combination of the metal cup (1) and the insert (8). 14. Prothèse totale de hanche comprenant la cupule selon la revendication 13.  14. Total hip prosthesis comprising the cup according to claim 13.
FR9014073A 1990-11-13 1990-11-13 CUP FOR COTYLOUIDIAN IMPLANTATION AND HIP PROSTHESIS COMPRISING SAME. Expired - Fee Related FR2668923B1 (en)

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EP0575102A2 (en) * 1992-06-16 1993-12-22 SMITH & NEPHEW RICHARDS, INC. Cementless acetabular cup
FR2719761A1 (en) * 1994-05-13 1995-11-17 Nabhan Jihad Metal cotyloid cup for femoral prosthesis
EP0699425A1 (en) * 1994-09-01 1996-03-06 SULZER Medizinaltechnik AG Artificial hip joint acetabular cup as well as manufacturing process
FR2770769A1 (en) * 1997-11-07 1999-05-14 Orthotechnique Acetabular cup prosthesis for hip surgery
FR2834630A1 (en) * 2002-01-17 2003-07-18 Implant Reduction Eurl Cotyloid cup for head of artificial hip joint femoral implant is made from two hemispherical shells, one partly flexible and other rigid
WO2011008757A1 (en) * 2009-07-14 2011-01-20 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US8123815B2 (en) 2008-11-24 2012-02-28 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis

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DE2645101A1 (en) * 1976-10-04 1978-04-06 Staatliche Porzellan Manufaktu Hip prosthesis with cup-shaped ball socket - with self-tapping thread interrupted by upwards tapering free grooves
DE2911754A1 (en) * 1979-03-26 1980-10-09 Hans Dr Reimer Artificial hip joint socket - has peripheral ribs decreasing in dia. towards zenith and hammered into bone
US4662891A (en) * 1983-11-21 1987-05-05 Joint Medical Products Corporation Fixation elements for artificial joints
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Publication number Priority date Publication date Assignee Title
EP0575102A2 (en) * 1992-06-16 1993-12-22 SMITH & NEPHEW RICHARDS, INC. Cementless acetabular cup
EP0575102A3 (en) * 1992-06-16 1994-05-04 Smith & Nephew Richards Inc
AU670087B2 (en) * 1992-06-16 1996-07-04 Smith & Nephew Richards Inc. Cementless acetabular cup
FR2719761A1 (en) * 1994-05-13 1995-11-17 Nabhan Jihad Metal cotyloid cup for femoral prosthesis
EP0699425A1 (en) * 1994-09-01 1996-03-06 SULZER Medizinaltechnik AG Artificial hip joint acetabular cup as well as manufacturing process
US5658345A (en) * 1994-09-01 1997-08-19 Sulzer Medizinaltechnik Ag Artificial acetabulum and method for manufacture
FR2770769A1 (en) * 1997-11-07 1999-05-14 Orthotechnique Acetabular cup prosthesis for hip surgery
FR2834630A1 (en) * 2002-01-17 2003-07-18 Implant Reduction Eurl Cotyloid cup for head of artificial hip joint femoral implant is made from two hemispherical shells, one partly flexible and other rigid
US8123815B2 (en) 2008-11-24 2012-02-28 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US9445903B2 (en) 2008-11-24 2016-09-20 Biomet Manufacturing, Llc Multi-bearing acetabular prosthesis
WO2011008757A1 (en) * 2009-07-14 2011-01-20 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US8308810B2 (en) 2009-07-14 2012-11-13 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US9445904B2 (en) 2009-07-14 2016-09-20 Biomet Manufacturing, Llc Multiple bearing acetabular prosthesis

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