FR2824258A1 - Cup implant, for a hip replacement prosthesis, has a dome with an inner cavity in a truncated cone shape to take a structured sliding core of ceramic or polymer material without increasing its dimensions - Google Patents

Cup implant, for a hip replacement prosthesis, has a dome with an inner cavity in a truncated cone shape to take a structured sliding core of ceramic or polymer material without increasing its dimensions Download PDF

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Publication number
FR2824258A1
FR2824258A1 FR0105969A FR0105969A FR2824258A1 FR 2824258 A1 FR2824258 A1 FR 2824258A1 FR 0105969 A FR0105969 A FR 0105969A FR 0105969 A FR0105969 A FR 0105969A FR 2824258 A1 FR2824258 A1 FR 2824258A1
Authority
FR
France
Prior art keywords
frustoconical
notches
cup
bore
implant according
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
FR0105969A
Other languages
French (fr)
Other versions
FR2824258B1 (en
Inventor
Antoine Briand
Jean Michel Guincestre
Francis Julia
Philippe Lapresle
Foll Dominique Le
Paul Leroy
Jean Louis Pincon
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.)
Groupe Lepine SAS
Original Assignee
Groupe Lepine SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Groupe Lepine SAS filed Critical Groupe Lepine SAS
Priority to FR0105969A priority Critical patent/FR2824258B1/en
Publication of FR2824258A1 publication Critical patent/FR2824258A1/en
Application granted granted Critical
Publication of FR2824258B1 publication Critical patent/FR2824258B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/30403—Longitudinally-oriented cooperating ribs and grooves on mating lateral surfaces of a mainly longitudinal connection
    • 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
    • A61F2002/30477—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using sharp protrusions, e.g. spikes, for anchoring into connecting prosthetic part
    • 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
    • A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A61F2002/30607—Kits of prosthetic parts to be assembled in various combinations for forming different prostheses
    • 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
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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
    • A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
    • 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
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
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    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A61F2002/30845—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes with cutting edges
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
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    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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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
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/006—Additional features; Implant or prostheses properties not otherwise provided for modular
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    • 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
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like 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
    • 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

A cup implant, for a prosthesis, has a hemisphere shaped dome with a inner cavity in a truncated cone shape. The sliding core has projecting section at its outer surface, with a truncated cone shape matching the cup structure, and with a fitting for the prosthesis anchor shaft. The inner cavity has notches of a set height for the truncated cone cavity, which open into a displacement zone to limit the anchor pins to secure the inserted core. A cup implant, for a hip replacement prosthesis, has a hemisphere shaped dome (2) with a inner cavity (9) in a truncated cone shape. The sliding core (4) has projecting section (22) at its outer surface (21), with a truncated cone shape matching the cup structure, and with a fitting for the prosthesis anchor shaft. The inner cavity is fitted with notches (11) of a set height for the truncated cone cavity, which open into a displacement zone (13) to limit the anchor pins (15) to secure the inserted core.

Description

à coulisser de manière télescopique dans ledit tube (32).to slide telescopically in said tube (32).

La présente invention concerne le domaine technique des prothèses de hanche,  The present invention relates to the technical field of hip prostheses,

destinées à réhabiliter l'articulation coxo-fémorale.  intended to rehabilitate the coxo-femoral joint.

La présente invention vise plus précisément un implant cotyloïdien pour  The present invention relates more specifically to an acetabular implant for

prothèse articulaire de hanche.hip joint prosthesis.

Une prothèse de hanche comporte principalement d'une part, une tige d'ancrage destinée à être introduite dans le fût fémoral pour y être scellée de façon naturelle ou artificielle au moyen d'un ciment, et d'autre part, une tête articulaire sphérique qui est destinée à se substituer à la tête fémorale naturelle pour être reçue dans la cavité cotyloïdienne de l'os iliaque correspondant d'un patient. Selon une forme de lO réalisation, la tête articulaire est réalisce par l'intermédiaire d'un implant cotyloïdien comportant une cupule de forme hémisphérique, destince à être fixée à demeure dans la cavité cotyloïdienne naturelle du patient. Cette cupule est évidée pour recevoir un noyau de glissement présentant un logement interne hémisphérique de réception en  A hip prosthesis mainly comprises on the one hand, an anchoring rod intended to be introduced into the femoral barrel to be sealed therein in a natural or artificial manner by means of a cement, and on the other hand, a spherical articular head which is intended to replace the natural femoral head to be received in the acetabular cavity of the corresponding iliac bone of a patient. According to one form of embodiment, the articular head is produced by means of an acetabular implant comprising a cup of hemispherical shape, intended to be fixed permanently in the natural acetabular cavity of the patient. This cup is hollowed out to receive a sliding core having a hemispherical internal housing for receiving

appui-glissement, pour une rotule équipant la tige fémorale.  sliding support, for a ball joint fitted to the femoral stem.

Une telle cupule généralement métallique est destince à recevoir un noyau de glissement réalisé soit en céramique, soit en un matériau plastique, notamment en polyéthylène. L'assemblage d'un noyau céramique à l'intérieur d'une cupule est réalisé par un emboîtement conique. A cet effet, le noyau de glissement céramique présente extérieurement une portée tronconique de forme complémentaire de celle  Such a generally metallic cup is intended to receive a sliding core made either of ceramic or of a plastic material, in particular of polyethylene. The assembly of a ceramic core inside a cup is achieved by a conical fitting. To this end, the ceramic sliding core externally has a frustoconical bearing of shape complementary to that

d'un alésage tronconique aménagé à l'intérieur de la cupule hémisphérique.  a tapered bore arranged inside the hemispherical cup.

Dans le cas de l'utilisation d'un noyau polyéthylène, l'assemblage entre la cupule et le noyau est réalisé, par exemple, par un système de griffes ou  In the case of the use of a polyethylene core, the assembly between the cup and the core is carried out, for example, by a system of claws or

d'encliquetage tel que décrit dans le document FR 2 668 055.  as described in document FR 2 668 055.

Dans certaines applications, il apparaît le besoin qu'une cupule soit adaptée à recevoir de manière indifférente un noyau céramique ou un noyau polyéthylène. Pour satisfaire ce besoin, une solution consiste à équiper la cupule d'une part d'un alésage tronconique, et d'autre part d'un système à griffes ou à encliquetage, disposé en dehors de l'alésage tronconique, de manière à autoriser le montage du noyau céramique. Il s'ensuit que la taille d'une telle cupule est augmentée par rapport à une cupule classique, ce qui constitue un inconvénient majeur, dans la mesure o la cavité cotyloïdienne n'est pas toujours apte à recevoir des cupules de taille importante. Pour tenter d'apporter une solution à ce probléme, il pourrait être envisagé de diminuer la taille du noyau, et par suite, la taille de la rotule de la tige fémorale. Or, il est connu que la diminution de la taille de la rotule de la tige fémorale augmente le  In certain applications, it appears the need for a cup to be adapted to indifferently receive a ceramic core or a polyethylene core. To meet this need, one solution consists in equipping the cup on the one hand with a frustoconical bore, and on the other hand with a claw or snap-in system, disposed outside the frustoconical bore, so as to allow mounting the ceramic core. It follows that the size of such a cup is increased compared to a conventional cup, which is a major drawback, insofar as the acetabular cavity is not always able to receive large cups. To try to provide a solution to this problem, it could be envisaged to reduce the size of the nucleus, and consequently, the size of the kneecap of the femoral stem. However, it is known that the decrease in the size of the kneecap of the femoral stem increases the

risque de luxation.risk of dislocation.

I1 apparait donc le besoin de pouvoir disposer d'un implant cotyloïdien pour prothèse articulaire de hanche, conçu pour recevoir indifféremment un noyau céramique ou un noyau polyéthylène, sans toutefois augmenter ses dimensions ou  I1 therefore appears the need to be able to have an acetabular implant for hip joint prosthesis, designed to receive either a ceramic core or a polyethylene core, without however increasing its dimensions or

diminuer la taille de la rotule de la tige fémorale.  decrease the size of the kneecap of the femoral stem.

L'objet de l'invention vise donc à proposer un implant cotyloïdien pour  The object of the invention therefore aims to propose an acetabular implant for

prothèse articulaire de hanche, adapté pour satisfaire un tel besoin.  hip joint prosthesis, adapted to meet such a need.

Pour atteindre un tel objectif, l'implant cotyloïdien comporte: une cupule de forme hémisphérique présentant intérieurement un alésage tronconique, À et un noyau de glissement présentant extérieurement une portée tronconique de forme complémentaire de celle de l'alésage tronconique de manière à obtenir un assemblage par emboitement conique entre le noyau de glissement et la cupule, le noyau de glissement étant pourvu d'un logement interne hémisphérique pour  To achieve such an objective, the acetabular implant comprises: a hemispherical cup having internally a frustoconical bore, À and a sliding core having externally a frustoconical bearing of shape complementary to that of the frustoconical bore so as to obtain an assembly by conical fitting between the sliding core and the cup, the sliding core being provided with a hemispherical internal housing for

recevoir en appui-glissement une rotule de tige fémorale.  receive a femoral stem ball joint.

Selon l'invention: - la cupule présente un alésage tronconique muni d'entailles aménagées sur une hauteur déterminée de l'alésage tronconique, les entailles débouchant dans une gorge de dogagement afin de délimiter des picots d'ancrage, - et le noyau de glissement présente une portée tronconique munie d'une partie saillante aménagée de manière qu'en position d'assemblage du noyau à l'intérieur de la cupule, la partie saillante de la portée tronconique s'ancre  According to the invention: - the cup has a frustoconical bore provided with notches arranged over a determined height of the frustoconical bore, the notches opening into a dogging groove in order to delimit anchoring pins, - and the sliding core has a frustoconical bearing surface provided with a protruding part arranged so that in the assembly position of the core inside the cup, the protruding part of the frustoconical bearing surface is anchored

dans les picots.in the pimples.

Diverses autres caractéristiques ressortent de la description faite cidessous en  Various other characteristics emerge from the description given below in

référence aux dessins annexés qui montrent, à titre d'exemples non limitatifs, des  reference to the accompanying drawings which show, by way of nonlimiting examples,

formes de réalisation et de mise en oeuvre de l'objet de l'invention.  embodiments and implementation of the subject of the invention.

La fg. 1 est une vue générale en coupe élévation, montrant un implant  The fg. 1 is a general view in elevation section, showing an implant

cotyloïdien conforme à l'invention.  acetabulum according to the invention.

La ffg. 2 est une vue en coupe transvers al e, pri se sensib lement selon les lignes  The ffg. 2 is a cross-sectional view to the right, taken sensitively along the lines

II-II de la fig. 1.II-II of fig. 1.

La fig. 3 est une vue en coupe élévation montrant un implant cotyloïdien comportant une cupule dans laquelle est monté un noyau de glissement en matière plastique. La fig. 1 illustre un implant cotyloïdien 1 pour prothèse articulaire de hanche, conforme à l'invention, comportant une cupule 2 destinée à recevoir, indifféremment, soit un noyau de glissement 3 réalisé en céramique, soit un noyau de glissement 4 réalisé en une matière plastique, notamment en polyéthylène. D'une manière lO classique, chaque noyau de glissement 3, 4 est pourvu d'un logement interne hémisphérique pour recevoir, en appui-glissement, une rotule de tige fémorale. La cupule 2 présente une forme extérieure sensiblement hémisphérique, possédant un pôle 5 et un bord équatorial 6. Cette cupule 2 peut, par exemple, être réalisée en un matériau métallique, tel qu'un alliage de titane, et peut être recouverte, sur sa surface extérieure 7 de formes diverses, d'un revêtement d'hydroxyapatite favorisant, dans la  Fig. 3 is an elevational sectional view showing an acetabular implant comprising a cup in which a sliding plastic core is mounted. Fig. 1 illustrates an acetabular implant 1 for a hip joint prosthesis, according to the invention, comprising a cup 2 intended to receive, either, a sliding core 3 made of ceramic, or a sliding core 4 made of a plastic material, especially in polyethylene. In a conventional manner, each sliding core 3, 4 is provided with a hemispherical internal housing to receive, by sliding support, a ball joint of the femoral stem. The cup 2 has a substantially hemispherical outer shape, having a pole 5 and an equatorial edge 6. This cup 2 can, for example, be made of a metallic material, such as a titanium alloy, and can be covered, on its outer surface 7 of various shapes, of a hydroxyapatite coating promoting, in the

cavité cotyloïdienne, une ostéo-intégration, au contact de la cupule.  acetabular cavity, osteointegration, in contact with the cup.

Selon une caractéristique de l'invention, la cupule 2 présente intérieurement un alésage tronconique 9, d'axe général x, débouchant, par sa grande base, sur le bord équatorial 6 de la cupule 2. Conformément à l'invention, l'alésage tronconique 9 est muni d'une série d'entailles 11 aménagées sur une hauteur détermince h de l'alésage tronconique 9. Les entailles 11 sont réalisces, dans l'exemple illustré, sur toute la circonférence de l'alésage tronconique 9. De préférence, les entailles 11 sont aménagées à partir du fond 12 de l'alésage tronconique, qui est délimité par la petite  According to a characteristic of the invention, the cup 2 has internally a frustoconical bore 9, of general axis x, opening, by its large base, on the equatorial edge 6 of the cup 2. According to the invention, the bore frustoconical 9 is provided with a series of notches 11 arranged over a determined height h of the frustoconical bore 9. The notches 11 are made, in the example illustrated, over the entire circumference of the frustoconical bore 9. Preferably , the notches 11 are arranged from the bottom 12 of the frustoconical bore, which is delimited by the small

base de l'alésage tronconique 9.base of the tapered bore 9.

Les entailles 11 débouchent dans une gorge de dogagement 13 permettant de délimiter des picots d'ancrage 15 dont la fonction apparaîtra plus précisément dans la  The notches 11 open into a dogging groove 13 making it possible to delimit anchoring pins 15 whose function will appear more precisely in the

suite de la description. Tel que cela ressort des fig. 1 et 2, chaque entaille 11 est  continuation of the description. As shown in Figs. 1 and 2, each notch 11 is

formée par un enlèvement de matière réalisé sur l'alésage tronconique 9, en laissant subsister entre deux entailles successives 11, une partie 9i de l'alésage tronconique, délimitant, au niveau de la gorge de dogagement 13, un picot 15. Ainsi, dans la mesure o les entailles l1 ne sont pas jointives, l'alésage tronconique 9 présente une surface d'emboîtement pour un noyau 3, 4 qui s'étend sur toute sa profondeur, c'est-à  formed by removing material from the frustoconical bore 9, leaving between two successive cuts 11, a portion 9i of the frustoconical bore, delimiting, at the level of the dogging groove 13, a pin 15. Thus, in the measurement where the notches 11 are not contiguous, the frustoconical bore 9 has a nesting surface for a core 3, 4 which extends over its entire depth, that is to say

dire de sa grande base 6 à sa petite base 12.  say from its large base 6 to its small base 12.

Chaque picot d'ancrage 15 présente ainsi, au niveau de la gorge de dégagement 13, une largeur I comprise entre 0,3 et 0,6 mm et une profondeur p comprise entre 0,3 et 0,6 mm. Par exemple, chaque entaille 11 présente une forme circulaire dont le rayon est égal à 5 mm. Dans l'exemple illustré sur les dessins, les entailles 11 sont aménagées sur l'alésage tronconique 9 en s'inscrivant selon une  Each anchoring pin 15 thus has, at the release groove 13, a width I of between 0.3 and 0.6 mm and a depth p of between 0.3 and 0.6 mm. For example, each notch 11 has a circular shape whose radius is equal to 5 mm. In the example illustrated in the drawings, the notches 11 are arranged on the frustoconical bore 9 by registering according to a

section droite transversale circulaire, centrée sur l'axe x de l'alésage tronconique 9.  circular cross section, centered on the x axis of the frustoconical bore 9.

Selon une autre caractéristique de l'invention, le noyau de glissement en polyéthylène 4 présente, extérieurement, une portée tronconique 21 de forme complémentaire de celle de l'alésage tronconique 9 de la cupule 2. Ainsi, l'insertion du noyau polyéthylène 4 à l'intérieur de l'alésage tronconique 9 de la cupule 2 permet d'obtenir un assemblage par emboîtement conique, entre le noyau de glissement 4 et  According to another characteristic of the invention, the polyethylene sliding core 4 has, externally, a frustoconical bearing 21 with a shape complementary to that of the frustoconical bore 9 of the cup 2. Thus, the insertion of the polyethylene core 4 to the interior of the frustoconical bore 9 of the cup 2 makes it possible to obtain an assembly by conical fitting, between the sliding core 4 and

la cupule 2.cup 2.

Selon une caractéristique de l'invention, la portée tronconique 21 du noyau polyéthylène 4 est munie d'une partie saillante 22 aménagée de manière qu'en position d'assemblage du noyau 4 à l'intérieur de la cupule 2, la partie saillante 22 coopère avec les picots d'ancrage 15. Dans l'exemple de réalisation illustrée, dans laquelle les entailles 11 sont aménagées sur toute la circonférence de l'alésage tronconique 9, la partie saillante 22 est réalisée sous la forme d'un collet cylindrique de section droite transversale circulaire, complémentaire de la section droite circulaire dans laquelle s'inscrivent les entailles 11. Ainsi, lors de l'insertion du noyau polyéthylène 4 à l'intérieur de la cupule 2, le collet cylindrique 22 est destiné à venir s'ancrer dans les picots 15 de la cupule 2, permettant d'obtenir un assemblage solide entre la cupule 2 et le noyau polyéthylène 4. En effet, il doit être compris qu'en position d'assemblage, les parties 9 de l'alésage tronconique 9, déforment localement la partie saillante 22 conduisant à l'obtention, dans cette partie saillante 22, d'empreintes en creux au-delà desquelles la partie saillante s'épanouit dans la gorge de dégagement 13. Les picots 15 pénètrent ainsi dans la partie saillante 22 et constituent, de la sorte, des butées d'anti-extraction du noyau polyéthylène 4 par  According to a characteristic of the invention, the frustoconical surface 21 of the polyethylene core 4 is provided with a projecting part 22 arranged so that in the assembly position of the core 4 inside the cup 2, the projecting part 22 cooperates with the anchoring pins 15. In the illustrated embodiment, in which the notches 11 are arranged over the entire circumference of the frustoconical bore 9, the projecting part 22 is produced in the form of a cylindrical collar of circular cross section, complementary to the circular cross section in which the notches 11 are inscribed. Thus, during the insertion of the polyethylene core 4 inside the cup 2, the cylindrical collar 22 is intended to come s' anchor in the pins 15 of the cup 2, making it possible to obtain a solid assembly between the cup 2 and the polyethylene core 4. In fact, it must be understood that in the assembly position, the parts 9 of the bore e frustoconical 9, locally deform the protruding part 22 leading to obtaining, in this protruding part 22, recesses beyond which the protruding part flourishes in the release groove 13. The pins 15 thus penetrate into the projecting part 22 and thus constitute anti-extraction stops for the polyethylene core 4 by

rapport à la cupule 2 (fig. 3).compared to cup 2 (fig. 3).

Par ailleurs, il doit être considéré qu'une telle cupule 2 peut recevoir un noyau de glissement en céramique 3 présentant une portée tronconique 21' de forme complémentaire de celle de l'alésage tronconique 9. La portée tronconique 21' du noyau céramique 3 présente, également, une profondeur sensiblement égale à celle de l'alésage tronconique 9, dans la mesure o les entailles 11 autorisent l'emboîtement complet de la portée tronconique 21' à l'intérieur de l'alésage tronconique 9. De plus, l'embo^itement conique, entre le noyau céramique 3 et la cupule 2, s'effectue donc sur toute la profondeur de la portée tronconique 21', compte tenu de la présence des parties 9i de l'alésage tronconique subsistant entre les  Furthermore, it should be considered that such a cup 2 can receive a ceramic sliding core 3 having a frustoconical bearing 21 'of shape complementary to that of the frustoconical bore 9. The frustoconical bearing 21' of the ceramic core 3 has , also, a depth substantially equal to that of the frustoconical bore 9, insofar as the notches 11 allow the complete fitting of the frustoconical bearing 21 'inside the frustoconical bore 9. In addition, the conical fitting, between the ceramic core 3 and the cup 2, therefore takes place over the entire depth of the frustoconical bearing 21 ′, taking into account the presence of the parts 9i of the frustoconical bore remaining between the

entailles 11.notches 11.

L'implant cotyloïdien selon l'invention présente donc l'avantage de pouvoir recevoir un noyau polyéthylène 4 ou un noyau céramique 3, sans toutefois, d'une part, augmenter la taille de la cupule par rapport à une cupule recevant uniquement un noyau céramique et, d'autre part, diminuer la taille du noyau. En effet, les entailles 11 et, par suite, les picots 15 font partie intégrante de l'alésage tronconique 9. Ainsi, l'assemblage, entre le noyau céramique 3 et la cupule 2, d'une part, et l'assemblage entre le noyau polyéthylène 4 et la cupule 2, d'autre part, sont  The acetabular implant according to the invention therefore has the advantage of being able to receive a polyethylene core 4 or a ceramic core 3, without, however, on the one hand, increasing the size of the cup relative to a cup receiving only a ceramic core and, on the other hand, decrease the size of the nucleus. Indeed, the notches 11 and, consequently, the pins 15 form an integral part of the frustoconical bore 9. Thus, the assembly, between the ceramic core 3 and the cup 2, on the one hand, and the assembly between the polyethylene core 4 and the cup 2, on the other hand, are

réalisés sur une même zone de l'alésage tronconique 9.  made on the same zone of the frustoconical bore 9.

Dans l'exemple décrit ci-dessus, les entailles 11 sont aménagées en bordant la petite base de l'alésage tronconique 9. Bien entendu, il peut être prévu de réaliser les  In the example described above, the notches 11 are arranged by bordering the small base of the frustoconical bore 9. Of course, provision can be made for the

entailles 11 sur l'alésage tronconique 9 à un endroit différent, en retrait du fond 12.  notches 11 on the tapered bore 9 at a different location, set back from the bottom 12.

Dans ce cas, la gorge de dégagement 13 est réalisée sur l'alésage tronconique 9. Dans le même sens, il peut être prévu de limiter les entailles 11 à une partie seulement de la circonférence de l'alésage tronconique 9. Dans ce cas, la partie saillante 22 de la portée tronconique 21 présente une section droite transversale complémentaire de  In this case, the release groove 13 is produced on the frustoconical bore 9. In the same direction, provision may be made to limit the notches 11 to only part of the circumference of the frustoconical bore 9. In this case, the projecting part 22 of the frustoconical bearing 21 has a cross section complementary to

celle dans laquelle s'inscrivent les entailles 11.  the one in which the notches fit 11.

L'invention n'est pas limitée aux exemples décrits et représentés car diverses  The invention is not limited to the examples described and shown since various

modifications peuvent y être apportées sans sortir de son cadre.  modifications can be made without departing from its scope.

Claims (8)

REVENDICATIONS 1 - Implant cotyloïdien pour prothèse articulaire de hanche, comportant: À une cupule (2) de forme hémisphérique présentant intérieurement un alésage tronconique (9), À et un noyau de glissement (4) présentant extérieurement une portée tronconique (21) de forme complémentaire de celle de l'alésage tronconique (9) de manière à obtenir un assemblage par embo^itement conique entre le noyau de glissement (4) et la cupule (2), le noyau de glissement (4) étant pourvu d'un logement interne hémisphérique pour recevoir en appui-glissement une rotule de tige fémorale, l0 caractérisé en ce que: - la cupule (2) présente un alésage tronconique (9) muni d'entailles (11) aménagées sur une hauteur déterminée de l'alésage tronconique, les entailles (11) détouchant dans une gorge de dégagement (13) afin de délimiter des picots d'ancrage (15), - et le noyau de glissement (4) présente une portée tronconique (21) munie d'une partie saillante (22) aménagée de manière qu'en position d'assemblage du noyau à l'intérieur de la cupule, la partie saillante (22) de  1 - Cotyloid implant for hip joint prosthesis, comprising: a cup (2) of hemispherical shape having internally a frustoconical bore (9), a and a sliding core (4) having externally a frustoconical bearing (21) of complementary shape that of the frustoconical bore (9) so as to obtain an assembly by conical fitting between the sliding core (4) and the cup (2), the sliding core (4) being provided with an internal housing hemispherical for receiving a ball joint of the femoral stem in sliding support, l0 characterized in that: - the cup (2) has a frustoconical bore (9) provided with notches (11) arranged over a determined height of the frustoconical bore, the notches (11) cutting back in a clearance groove (13) in order to delimit anchoring pins (15), - and the sliding core (4) has a frustoconical bearing surface (21) provided with a projecting part (22 ) arranged so that in the assembly position of the core inside the cup, the projecting part (22) of la portée tronconique s'ancre dans les picots (15).  the frustoconical bearing is anchored in the pins (15). 2 - Implant cotyloïdien selon la revendication l, caractérisé en ce que les entailles (11) sont aménagées sur l'alésage tronconique (9) en s'inscrivant selon une section droite transversale donnée complémentaire de celle dans laquelle  2 - acetabular implant according to claim l, characterized in that the notches (11) are arranged on the frustoconical bore (9) by registering according to a given cross section complementary to that in which s'inscrit la partie saillante (22) de la portée tronconique (21).  fits the projecting part (22) of the frustoconical bearing (21). 3 - Implant cotyloïdien selon la revendication 1 ou 2, caractérisé en ce que les entailles (11) sont aménagées sur toute la circonférence de l'alésage  3 - acetabular implant according to claim 1 or 2, characterized in that the notches (11) are arranged over the entire circumference of the bore tronconique (9), en s'inscrivant selon une section droite transversale circulaire.  frustoconical (9), being inscribed in a circular cross section. 4 - Implant cotyloïdien selon la revendication 2 et 3 caractérisé en ce que la portée tronconique (21) du noyau de glissement présente une partie saillante (22) réalisce sous la forme d'un collet cylindrique de section droite transversale circulaire complémentaire de la section droite transversale circulaire dans laquelle  4 - acetabular implant according to claim 2 and 3 characterized in that the frustoconical bearing surface (21) of the sliding core has a projecting part (22) produced in the form of a cylindrical collar of circular cross section complementary to the cross section circular cross in which s'inscrivent les entailles (11).the notches (11) are inscribed. - Implant cotyloïdien selon l'une des revendications 1 à 4, caractérisé en ce  - Cotyloid implant according to one of claims 1 to 4, characterized in que les entailles (11) sont aménagées à partir du fond (12) de l'alésage  that the notches (11) are arranged from the bottom (12) of the bore tronconique (9) qui débouche dans la gorge de dégagement (13).  frustoconical (9) which opens into the release groove (13). 6 - Implant cotyloïdien selon l'une des revendications l à 5, caractérisé en ce  6 - cotyloid implant according to one of claims l to 5, characterized in que les entailles (11) sont régulièrement espacces les unes des autres en laissant sub sister entre elles une parti e (9i) de l'alésage tronconique adaptée p our as surer  that the notches (11) are regularly spaced from each other leaving a part e (9i) of the frusto-conical bore adapted to support them un appui pour le noyau.support for the nucleus. 7 - Implant cotyloïdien selon la revendication 5 ou 6, caractérisé en ce que deux entailles successives (11) délimitent entre elles au niveau de la gorge de  7 - acetabular implant according to claim 5 or 6, characterized in that two successive notches (11) delimit between them at the level of the throat of dégagement (13), un picot (15) dont la largeur 1 est comprise entre 0,3 et 0,6 mm.  release (13), a pin (15) whose width 1 is between 0.3 and 0.6 mm. 8 - Implant cotyloïdien selon la revendication 5, 6 ou 7, caractérisé en ce que deux entailles successives (11) délimitent entre elles au niveau de la gorge de dégagement (13), un picot (15) dont la profondeur est comprise entre 0,3 et  8 - acetabular implant according to claim 5, 6 or 7, characterized in that two successive notches (11) delimit between them at the level of the release groove (13), a spike (15) whose depth is between 0, 3 and 0,6 mm.0.6 mm. 9 - Implant cotyloïdien selon l'une des revendications 1 à 8, caractérisé en ce  9 - cotyloid implant according to one of claims 1 to 8, characterized in que chaque entaille (11) présente une forme circulaire.  that each notch (11) has a circular shape. - Implant cotyloïdien selon la revendication l, caractérisé en ce que le noyau de glissement (4) est réalisé en une matière plastique telle qu'en  - acetabular implant according to claim l, characterized in that the sliding core (4) is made of a plastic material such as
FR0105969A 2001-05-04 2001-05-04 COTYLOID IMPLANT FOR HIP JOINT PROSTHESIS Expired - Lifetime FR2824258B1 (en)

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WO2007121167A1 (en) * 2006-04-11 2007-10-25 Zimmer Technology, Inc. Acetabular cup conversion ring
US7708783B2 (en) 2005-11-04 2010-05-04 Zimmer Technology, Inc. Rotating constrained liner
WO2010060071A1 (en) * 2008-11-24 2010-05-27 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US7794504B2 (en) 2005-04-12 2010-09-14 Zimmer Technology, Inc. Method for making a metal-backed acetabular implant
US8308810B2 (en) 2009-07-14 2012-11-13 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US8308811B2 (en) 2006-04-11 2012-11-13 Zimmer, Inc. Acetabular cup conversion ring

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FR2631542A1 (en) * 1988-05-20 1989-11-24 Patrick Henry Straight, screwed acetabular prosthesis
FR2668055A1 (en) 1990-10-19 1992-04-24 Icp Sa Screw-type acetabular implant
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Publication number Priority date Publication date Assignee Title
US7794504B2 (en) 2005-04-12 2010-09-14 Zimmer Technology, Inc. Method for making a metal-backed acetabular implant
US7708783B2 (en) 2005-11-04 2010-05-04 Zimmer Technology, Inc. Rotating constrained liner
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US7985259B2 (en) 2006-04-11 2011-07-26 Zimmer Technology, Inc. Acetabular cup conversion ring
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WO2010060071A1 (en) * 2008-11-24 2010-05-27 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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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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