FR2819172A1 - Replacement acetabular cup for hip prosthesis has angled fixed lug with fastening hole and hook to engage with pelvic aperture - Google Patents

Replacement acetabular cup for hip prosthesis has angled fixed lug with fastening hole and hook to engage with pelvic aperture Download PDF

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Publication number
FR2819172A1
FR2819172A1 FR0100194A FR0100194A FR2819172A1 FR 2819172 A1 FR2819172 A1 FR 2819172A1 FR 0100194 A FR0100194 A FR 0100194A FR 0100194 A FR0100194 A FR 0100194A FR 2819172 A1 FR2819172 A1 FR 2819172A1
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FR
France
Prior art keywords
cup
cavity
tab
plane
implant
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
FR0100194A
Other languages
French (fr)
Other versions
FR2819172B3 (en
Inventor
Patrick Pfaifer
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
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Filing date
Publication date
Application filed by Groupe Lepine SAS filed Critical Groupe Lepine SAS
Priority to FR0100194A priority Critical patent/FR2819172B3/en
Publication of FR2819172A1 publication Critical patent/FR2819172A1/en
Application granted granted Critical
Publication of FR2819172B3 publication Critical patent/FR2819172B3/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4609—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/3008—Properties of materials and coating materials radio-opaque, e.g. radio-opaque markers
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30317—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
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
    • A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • 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
    • A61F2002/30617—Visible markings for adjusting, locating or measuring
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/3069—Revision endoprostheses
    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
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    • 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
    • A61F2002/30785—Plurality of holes parallel
    • 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
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
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    • A61F2002/30795—Blind bores, e.g. of circular cross-section
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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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    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30891—Plurality of protrusions
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/3208—Bipolar or multipolar joints, e.g. having a femoral head articulating within an intermediate acetabular shell whilst said shell articulates within the natural acetabular socket or within an artificial outer shell
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • 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
    • A61F2002/3417—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface the outer shell having protrusions on meridian lines, e.g. equidistant fins or wings around the equatorial zone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3443—Acetabular cups with an anti-luxation elevated rim portion, e.g. on the inner shell
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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
    • A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
    • A61F2002/3466—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped having a cylindrical external shape, e.g. entirely cylindrical
    • 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
    • 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
    • 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
    • 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
    • A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0097—Visible markings, e.g. indicia
    • 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
    • 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
    • A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
    • 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

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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

A replacement acetabular cup is novel, have an angled fixed lug with fastening hole and hook to engage with pelvic aperture. The acetabular cup (5), moulded in one piece from a chromecobalt alloy and having an external surface coating of a bone growth promoting substance, especially calcium hydroxyapatite, has a cavity (15) to receive an insert (3), a hook (6) to engage with the pelvic aperture and a rigid fixing lug (7). The lug is joined to the cup so that when the implant is viewed from the side and perpendicular to its median axis, the axis forms an angle of 5 - 15 degrees to the plane of the cup's opening (16); when viewed parallel to the median axis the contact face of the lug forms an angle of 30 - 40 deg with the plane of the opening; when viewed perpendicular to the plane of the opening the median axis forms an angle of 7 - 17 deg with the median plane of the cup. The aforementioned angles are preferably of 10, 35 and 12 deg respectively.

Description

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Figure img00010001
Figure img00010001

La présente invention concerne un implant cotyle'dien dit"de reprise". The present invention relates to an acetabular implant called "recovery".

Il arrive qu'un implant coty) oïdien de prothèse de hanche doive, après un certain nombre d'années, être remplacé par un autre implant, dit "de reprise".  It happens that a coty) oïdien implant of hip prosthesis must, after a certain number of years, be replaced by another implant, known as "of resumption".

En effet, une dégradation osseuse peut se produire au cours du temps au niveau des zones d'appui de l'implant, ce qui rend ce dernier instable. Une telle dégradation résulte en particulier d'une ostéolyse apparaissant notamment au regard des trous que comprend la cupule métallique de l'implant pour le passage des vis d'ancrage de cet implant au bassin.  Indeed, bone degradation can occur over time in the areas of support of the implant, which makes the latter unstable. Such degradation results in particular from osteolysis appearing in particular with regard to the holes that the metal cup of the implant comprises for the passage of the anchoring screws of this implant to the pelvis.

Le remplacement consiste à retirer l'implant d'origine, à procéder à une ablation osseuse permettant d'éliminer les zones dégradées, à réaménager le site osseux par fraisage, et à mettre en place un implant de reprise présentant un diamètre supérieur à celui de l'implant d'origine.  The replacement consists in removing the original implant, in performing a bone ablation making it possible to eliminate the degraded zones, in reorganizing the bone site by milling, and in installing a recovery implant having a diameter greater than that of the original implant.

Une reconstitution de la paroi osseuse au moyen de greffons est fréquemment nécessaire pour reformer les surfaces d'appui et pour positionner l'implant de manière correcte par rapport au bassin. Reconstitution of the bone wall by means of grafts is frequently necessary to reform the bearing surfaces and to position the implant correctly relative to the pelvis.

Un tel implant de reprise a toutefois pour inconvénient d'impliquer une ablation importante d'os, au niveau de zones déjà amoindries et fragilisées. De plus, les greffes osseuses n'offrent pas toutes garanties de réussite et surtout de solidité, et ne sont donc pas

Figure img00010002

particulièrement souhaitables au niveau des zones d'appui. However, such a recovery implant has the disadvantage of involving a significant ablation of bone, in already weakened and weakened areas. In addition, bone grafts do not offer all guarantees of success and especially of solidity, and are therefore not
Figure img00010002

particularly desirable in terms of support zones.

En outre, le positionnement correct de l'implant de reprise est problématique en cas de dégradations osseuses importantes (de type 3A ou 3B de la typologie bien connue de Paprowsky, Perona et Lawrence).  In addition, the correct positioning of the recovery implant is problematic in the event of significant bone degradation (of type 3A or 3B of the well-known typology of Paprowsky, Perona and Lawrence).

Pour remédier à ces inconvénients, il est connu de prévoir, sur un côté de la cupule de l'implant, une ou plusieurs pattes de fixation de cette cupule à l'os, faisant saillie de la cupule vers l'extérieur, et, sur le côté de la cupule opposé à cette ou ces pattes, un crochet de positionnement conformé pour être engagé dans le trou obturateur du bassin. La ou lesdites pattes de fixation sont percées de trous et peuvent recevoir des vis d'ancrage osseux, engagées à travers elles.  To overcome these drawbacks, it is known to provide, on one side of the cup of the implant, one or more lugs for fixing this cup to the bone, projecting from the cup towards the outside, and, on the side of the cup opposite this or these legs, a positioning hook shaped to be engaged in the obturator hole of the basin. The one or more fixing lugs are pierced with holes and can receive bone anchor screws, engaged through them.

Dans les implants existants, ces pattes ont des épaisseurs relativement réduites, pour pouvoir être déformées afin d'être adaptées à la  In existing implants, these legs have relatively reduced thicknesses, so that they can be deformed in order to be adapted to the

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conformation de la zone osseuse contre laquelle elles sont destinées à prendre appui.  conformation of the bony area against which they are intended to rest.

Ces pattes ont toutefois pour inconvénient de ne pas être très résistantes, ce qui ne garantit pas la parfaite tenue de l'ancrage au cours du temps compte tenu des contraintes importantes et répétées subies par un implant cotyloïdien. Ce problème se pose d'autant plus que la ou les déformations subies par cette ou ces pattes ont pu altérer la résistance mécanique du métal (titane) généralement employé pour réaliser ces cupules.  These tabs, however, have the disadvantage of not being very resistant, which does not guarantee the perfect holding of the anchor over time, taking into account the significant and repeated stresses undergone by an acetabular implant. This problem arises all the more since the deformation or deformations undergone by this or these legs have been able to alter the mechanical strength of the metal (titanium) generally used to produce these cups.

La présente invention vise à remédier à cet inconvénient essentiel, en fournissant un implant cotyloïdien de reprise qui permette de traiter des dégradations osseuses importantes, de type 3A ou 3B selon la typologie de Paprowsky, Perona et Lawrence, en garantissant une parfaite fixation de l'implant au cours du temps.  The present invention aims to remedy this essential drawback by providing an acetabular implant for recovery which makes it possible to treat significant bone damage, of type 3A or 3B according to the typology of Paprowsky, Perona and Lawrence, by guaranteeing perfect fixation of the implant over time.

L'implant cotyloïdien concerné comprend, de manière connue en soi, une cupule et un insert ; la cupule délimite intérieurement une cavité qui débouche sur l'extérieur par une ouverture s'étendant dans un plan, et présente, sur un côté, une patte pour sa fixation à l'os, faisant saillie vers l'extérieur, tandis que, sur son côté opposé à cette patte, cette cupule comprend un crochet conformé pour être engagé dans le trou obturateur du bassin, ladite patte délimitant une face de contact avec l'os et ayant un axe médian longitudinal, et ladite cupule ayant un plan médian qui coïncide avec le plan médian longitudinal dudit crochet ; l'insert est en matériau favorisant le glissement et délimite une cavité de réception d'une tête fémorale prothétique, cet insert étant destiné à être reçu dans ladite cavité de la cupule.  The acetabular implant concerned comprises, in a manner known per se, a cup and an insert; the cup internally delimits a cavity which opens to the outside through an opening extending in a plane, and has, on one side, a tab for its attachment to the bone, projecting outwards, while, on its side opposite to this tab, this cup includes a hook shaped to be engaged in the obturator hole of the pelvis, said tab delimiting a face of contact with the bone and having a longitudinal median axis, and said cup having a median plane which coincides with the longitudinal median plane of said hook; the insert is made of material promoting sliding and delimits a cavity for receiving a prosthetic femoral head, this insert being intended to be received in said cavity of the cup.

Selon l'invention, - ladite patte forme solidement corps avec la cupule et est rigide, c'est-à-dire n'est pas prévue pour être déformée ; et - cette patte est disposée comme suit : (i) lorsque l'implant est vu de côté selon une direction perpendiculaire audit axe médian, cet axe médian forme un angle de 5 à 15 par rapport audit plan de l'ouverture ; (ii) lorsque l'implant est vu de côté selon une direction parallèle audit axe médian, ladite face de contact de la patte forme un angle de 30 à 400 par rapport à ce même plan de l'ouverture, et  According to the invention, - said tab forms a solid body with the cup and is rigid, that is to say is not intended to be deformed; and - this tab is arranged as follows: (i) when the implant is viewed from the side in a direction perpendicular to said median axis, this median axis forms an angle of 5 to 15 relative to said plane of the opening; (ii) when the implant is seen from the side in a direction parallel to said median axis, said contact face of the tab forms an angle of 30 to 400 relative to this same plane of the opening, and

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(iii) lorsque l'implant est vu selon une direction perpendiculaire audit plan de l'ouverture, ledit axe médian forme un angle de 7 à 17 avec ledit plan médian de la cupule.  (iii) when the implant is seen in a direction perpendicular to said plane of the opening, said median axis forms an angle of 7 to 17 with said median plane of the cup.

La patte ainsi disposée peut venir en appui contre la face antérieure de l'aile iliaque, au niveau de laquelle l'os reste sain même dans le cas d'une dégradation importante de l'os. L'engagement du crochet dans le trou obturateur permet de parfaitement positionner la cupule par rapport au bassin et la fixation de la patte à l'aile iliaque permet, grâce au fait que cette patte est rigide et forme corps avec la cupule, de parfaitement maintenir cette cupule dans la position ainsi définie, même en cas de dégradation importante des zones osseuses délimitant normalement la cavité cotyloïdienne.  The leg thus arranged can come to bear against the anterior face of the iliac wing, at the level of which the bone remains healthy even in the case of significant degradation of the bone. The engagement of the hook in the obturator hole makes it possible to perfectly position the cup relative to the pelvis and the fixing of the leg to the iliac wing makes it possible, thanks to the fact that this leg is rigid and forms body with the cup, to perfectly maintain this cup in the position thus defined, even in the event of significant degradation of the bony areas normally delimiting the acetabular cavity.

Cette cupule permet également de parfaitement maintenir d'éventuels greffons placés entre elle et l'os subsistant afin de reconstituer, au moins partiellement, la cavité cotyloïdienne.  This cup also makes it possible to perfectly maintain any grafts placed between it and the remaining bone in order to reconstitute, at least partially, the acetabular cavity.

Selon une forme de réalisation préférée de l'invention, les angles précités sont respectivement de :

Figure img00030001

(i) 10 , (ici) 35 , et (iii) 120. According to a preferred embodiment of the invention, the above-mentioned angles are respectively:
Figure img00030001

(i) 10, (here) 35, and (iii) 120.

Avantageusement, la face de la cupule délimitant ladite cavité est en forme de sphère creuse, et l'insert présente, hormis au niveau de sa face dans laquelle débouche la cavité qu'il délimite lui-même, une forme extérieure sphérique, de rayon légèrement inférieur au rayon de la cavité de la cupule, de sorte que cet insert peut se mouvoir à la manière d'une rotule par rapport à la cupule. Advantageously, the face of the cup delimiting said cavity is in the form of a hollow sphere, and the insert has, apart from its face in which the cavity which it delimits opens, a spherical external shape, of slightly radius smaller than the radius of the cup cavity, so that this insert can move like a ball with respect to the cup.

Grâce à cette possibilité de débattement omnidirectionnel de l'insert par rapport à la cupule, l'insert peut suivre les mouvements de la tête prothétique sans solliciter les zones d'ancrage.  Thanks to this possibility of omnidirectional movement of the insert relative to the cup, the insert can follow the movements of the prosthetic head without stressing the anchoring zones.

De préférence, dans ce cas, la cupule présente un rebord antiluxation, faisant saillie du bord de la cupule qui délimite l'ouverture de la cavité, selon une direction parallèle à l'axe de cette cavité, ce rebord s'étendant sur environ la moitié de la circonférence de la cupule et étant situé sur le côté de cette cupule sur lequel se trouve la patte.  Preferably, in this case, the cup has an anti-luxation rim, projecting from the edge of the cup which delimits the opening of the cavity, in a direction parallel to the axis of this cavity, this rim extending over approximately the half the circumference of the cup and being located on the side of this cup on which the tab is located.

Ce rebord augmente la portée contre laquelle l'insert peut s'appuyer et prévient efficacement tout risque de luxation de cet insert.  This rim increases the range against which the insert can lean and effectively prevents any risk of dislocation of this insert.

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La cupule peut comprendre des pointes, nervures et/ou autres aspérités faisant saillie de sa face extérieure, pour favoriser son immobilisation par rapport à l'os. Selon une forme de réalisation préférée de l'invention dans ce cas, la cupule présente : - quatre pointes équidistantes, symétriques par rapport audit plan médian, situées environ aux deux tiers de la hauteur de la cupule, et - deux séries de nervures méridiennes, situées à proximité de ladite ouverture, dans les zones séparant la patte et le crochet.  The cup may include points, ribs and / or other asperities projecting from its outer face, to promote its immobilization relative to the bone. According to a preferred embodiment of the invention in this case, the cup has: - four equidistant points, symmetrical with respect to said median plane, located about two thirds of the height of the cup, and - two series of meridian ribs, located near said opening, in the areas separating the tab and the hook.

L'implant selon l'invention est avantageusement réalisé par moulage en une seule pièce d'un alliage chrome-cobalt.  The implant according to the invention is advantageously produced by molding in a single piece of a chromium-cobalt alloy.

Il peut présenter une encoche au niveau dudit plan médian de la cupule, et du côté opposé au crochet.  It may have a notch at said median plane of the cup, and on the side opposite the hook.

Cette encoche constitue un point de prise d'appui pour orienter l'implant sur l'instrument de mise en place de cet implant. Cette même encoche forme également un repère radiologique par la discontinuité du rebord anti-luxation qu'elle génère.  This notch constitutes a point of support for orienting the implant on the instrument for positioning this implant. This same notch also forms a radiological reference by the discontinuity of the anti-dislocation rim it generates.

En outre, la face extérieure de la cupule peut être au moins partiellement recouverte d'un matériau ostéo-inducteur, avantageusement poreux. Ce matériau peut en particulier être de l'hydroxyapatite de calcium.  In addition, the external face of the cup can be at least partially covered with an osteo-inductive material, advantageously porous. This material can in particular be calcium hydroxyapatite.

Pour sa bonne compréhension, l'invention est à nouveau décrite ci-dessous en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme de réalisation préférée d'un implant cotyloïdien et d'un jeu de tels implants, qu'elle concerne.  For a good understanding, the invention is again described below with reference to the appended schematic drawing representing, by way of nonlimiting example, a preferred embodiment of an acetabular implant and a set of such implants, it concerns.

La figure 1 est une vue en perspective des deux pièces qui le constituent ; la figure 2 est une vue en coupe selon la ligne tt-tt de la figure 1 de la pièce d'ancrage osseux qu'il comprend ; les figures 3 et 4 sont des vues de côté, respectivement dans deux directions opposées, de cette pièce d'ancrage osseux ; la figure 5 est une vue de côté de cette même pièce, selon une direction perpendiculaire aux directions des vues selon les figures 3 et 4, et la figure 6 est une vue de face de cette pièce, après mise en place sur un bassin.  Figure 1 is a perspective view of the two parts which constitute it; Figure 2 is a sectional view along the line tt-tt of Figure 1 of the bone anchor it comprises; Figures 3 and 4 are side views, respectively in two opposite directions, of this bone anchor; Figure 5 is a side view of the same part, in a direction perpendicular to the directions of the views according to Figures 3 and 4, and Figure 6 is a front view of this part, after placement on a basin.

La figure 1 représente un implant cotyle'dien 1"de reprise", c'est-à-dire destiné à remplacer un implant cotyloïdien préalablement mis en place sur un bassin lors de l'implantation d'une prothèse totale de la  FIG. 1 represents an acetabular implant 1 "of recovery", that is to say intended to replace an acetabular implant previously placed on a pelvis during the implantation of a total prosthesis of the

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hanche. Cet implant 1 est particulièrement destiné à traiter des cas de dégradations osseuses importantes au niveau de la cavité cotyloïdienne, à savoir des dégradations de type de type 3A ou 3B de la typologie bien connue de Paprowsky, Perona et Lawrence.  hip. This implant 1 is particularly intended for treating cases of significant bone damage in the acetabular cavity, namely degradations of type 3A or 3B of the well-known typology of Paprowsky, Perona and Lawrence.

Comme le montre la figure 1, cet implant 1 comprend une pièce 2 d'ancrage osseux et un insert 3.  As shown in FIG. 1, this implant 1 comprises a part 2 for bone anchoring and an insert 3.

La pièce 2 présente une cupule 5, un crochet 6, une patte 7, un rebord 8, des pointes 9 et des nervures 10. L'ensemble est en alliage chrome-cobalt et est moulé en une seule pièce.  The part 2 has a cup 5, a hook 6, a tab 7, a flange 8, spikes 9 and ribs 10. The assembly is made of chrome-cobalt alloy and is molded in one piece.

La cupule 5 a une forme générale hémisphérique et délimite une cavité 15 en forme de sphère creuse, qui débouche sur l'extérieur par une ouverture 16 s'étendant dans le plan équatorial de cette cupule 5.  The cup 5 has a general hemispherical shape and delimits a cavity 15 in the form of a hollow sphere, which opens to the outside by an opening 16 extending in the equatorial plane of this cup 5.

Le crochet 6 est relié solidement au bord équatorial de la cupule 5 et fait saillie vers l'extérieur de celle-ci. Ainsi que le montre la figure 6, ce crochet 6 est conformé pour prendre appui contre l'os du bassin 100 au niveau de la zone de celui-ci qui délimite le trou obturateur 101 du côté de la cavité cotyloïdienne.  The hook 6 is securely connected to the equatorial edge of the cup 5 and projects outwardly from the latter. As shown in Figure 6, this hook 6 is shaped to bear against the pelvic bone 100 at the area thereof which delimits the obturator hole 101 on the side of the acetabular cavity.

La patte 7 fait saillie vers l'extérieur de la cupule 5, sur le côté opposé au crochet 6. Elle a une longueur maximale d'environ trente millimètres, de sorte qu'elle s'étend au-dessus de la face antérieure de l'aile iliaque 102 lorsque la pièce 2 est mise en place sur le bassin 100 comme le montre la figure 6.  The tab 7 projects outwards from the cup 5, on the side opposite the hook 6. It has a maximum length of about thirty millimeters, so that it extends above the front face of the iliac wing 102 when the part 2 is placed on the pelvis 100 as shown in FIG. 6.

La patte 7 délimite une face de contact avec l'os du bassin 100 et présente quatre trous 20 destinés à recevoir des vis d'ancrage osseux (non représentées).  The tab 7 delimits a contact face with the bone of the pelvis 100 and has four holes 20 intended to receive bone anchoring screws (not shown).

La patte 7 a une épaisseur de quatre millimètres et sa base est raccordée à la cupule 5 par une paroi arrondie 21, formant un congé. Cette patte 7 est ainsi rigide et forme solidement corps avec la cupule 5.  The tab 7 has a thickness of four millimeters and its base is connected to the cup 5 by a rounded wall 21, forming a fillet. This tab 7 is thus rigid and forms a solid body with the cup 5.

En outre, la patte 7 est disposée de telle sorte que : - son axe médian longitudinal forme un angle de dix degrés avec le plan de l'ouverture 16, lorsque l'implant est vu de côté conformément à la figure 2, c'est-à-dire selon une direction perpendiculaire à cet axe médian ; la patte 7 est ainsi inclinée du côté de la cupule 5 opposé à celui sur lequel se trouve l'ouverture 16 ;  In addition, the tab 7 is arranged such that: - its longitudinal median axis forms an angle of ten degrees with the plane of the opening 16, when the implant is viewed from the side in accordance with FIG. 2, this is ie in a direction perpendicular to this median axis; the tab 7 is thus inclined on the side of the cup 5 opposite to that on which the opening 16 is located;

<Desc/Clms Page number 6><Desc / Clms Page number 6>

- la face de contact de la patte 7 avec l'os forme un angle de 35 degrés par rapport au plan de l'ouverture 16, comme cela apparaît sur la figure 5, et - l'axe médian de la patte 7 forme un angle de 12 degrés avec le plan médian de la cupule 5 coïncidant avec le plan médian longitudinal du crochet 6.  - the contact face of the tab 7 with the bone forms an angle of 35 degrees relative to the plane of the opening 16, as it appears in FIG. 5, and - the median axis of the tab 7 forms an angle 12 degrees with the median plane of the cup 5 coinciding with the longitudinal median plane of the hook 6.

Le rebord 8 fait saillie du bord de la cupule 5 qui délimite l'ouverture 16 selon une direction parallèle à l'axe de la cavité 15. Ce rebord 8 s'étend sur environ la moitié de la circonférence de la cupule 5 et est situé sur le côté de cette cupule 5 sur lequel se trouve la patte 7. Il présente une encoche 25 qui constitue un point de prise d'appui pour orienter l'implant sur l'instrument de mise en place de cet implant et qui forme un repère radiologique de la position de l'implant 1.  The rim 8 projects from the edge of the cup 5 which delimits the opening 16 in a direction parallel to the axis of the cavity 15. This rim 8 extends over approximately half of the circumference of the cup 5 and is located on the side of this cup 5 on which the tab 7 is located. It has a notch 25 which constitutes a support point for orienting the implant on the instrument for positioning this implant and which forms a reference of the implant position 1.

Ce rebord 8 permet d'augmenter la surface interne de la cupule 5 et forme donc une portée supplémentaire contre laquelle l'insert 3 peut s'appuyer, afin de prévenir efficacement tout risque de luxation de cet insert 3.  This rim 8 makes it possible to increase the internal surface of the cup 5 and therefore forms an additional bearing against which the insert 3 can rest, in order to effectively prevent any risk of dislocation of this insert 3.

Les pointes 9 font saillie de la face extérieure de la cupule 5.  The points 9 protrude from the outer face of the cup 5.

Elles sont équidistantes, symétriques par rapport au plan médian de la cupule 5 et sont situées environ aux deux tiers de la hauteur de cette dernière. They are equidistant, symmetrical with respect to the median plane of the cup 5 and are located about two thirds of the height of the latter.

Les nervures 10 sont disposées selon les méridiens de la cupule 5, en deux séries situées près de la zone équatoriale de celle-ci, entre le crochet 6 et la patte 7.  The ribs 10 are arranged along the meridians of the cup 5, in two series located near the equatorial zone thereof, between the hook 6 and the tab 7.

En outre, la cupule 5 présente sur sa face extérieure des cuvettes 30 revêtues d'hydroxyapatite de calcium poreuse.  In addition, the cup 5 has on its outer face cups 30 coated with porous calcium hydroxyapatite.

L'insert 3 est, quant à lui, en polyéthylène et délimite une cavité sphérique 35 de réception d'une tête fémorale prothétique, ainsi qu'un rebord 36 de rétention de cette tête dans cette cavité 35.  The insert 3 is, in turn, made of polyethylene and delimits a spherical cavity 35 for receiving a prosthetic femoral head, as well as a rim 36 for retaining this head in this cavity 35.

Cet insert 3 est destiné à être reçu dans la cavité 15 et présente, hormis au niveau de sa face 37 dans laquelle débouche la cavité 35, une forme extérieure sphérique, de rayon légèrement inférieur au rayon de la cavité 15.  This insert 3 is intended to be received in the cavity 15 and has, apart from its face 37 into which the cavity 35 opens, a spherical external shape, with a radius slightly less than the radius of the cavity 15.

Cet insert 3 peut ainsi se mouvoir à la manière d'une rotule par rapport à la cupule 5, selon un débattement omnidirectionnel, de sorte qu'il  This insert 3 can thus move in the manner of a ball joint relative to the cup 5, according to an omnidirectional movement, so that it

<Desc/Clms Page number 7><Desc / Clms Page number 7>

peut suivre les mouvements de la tête fémorale prothétique sans solliciter les zones d'ancrage de la pièce 2 à l'os du bassin 100.  can follow the movements of the prosthetic femoral head without requesting the anchoring zones of the part 2 to the bone of the pelvis 100.

L'invention fournit ainsi un implant cotyloïdien de reprise ayant pour avantage essentiel, par rapport aux implants homologues de la technique antérieure, de permettre de traiter des dégradations osseuses importantes, de type 3A ou 3B selon la typologie de Paprowsky, Perona et Lawrence, en garantissant une parfaite fixation de l'implant au cours du temps.  The invention thus provides an acetabular implant for recovery having the essential advantage, compared to the homologous implants of the prior art, making it possible to treat significant bone degradations, of type 3A or 3B according to the typology of Paprowsky, Perona and Lawrence, in ensuring perfect fixation of the implant over time.

Il va de soi que l'invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple mais qu'elle en embrasse au contraire toutes les variantes de réalisation couvertes par les revendications ci-annexées. It goes without saying that the invention is not limited to the embodiment described above by way of example, but on the contrary embraces all the variant embodiments covered by the claims appended hereto.

Claims (10)

Figure img00080001
Figure img00080001
 REVENDICATIONS 1-Implant cotylo'fdien dit"de reprise", comprenant une cupule (5) et un insert (3) ; la cupule (5) délimite intérieurement une cavité (15) qui débouche sur l'extérieur par une ouverture (16) s'étendant dans un plan, et présente, sur un côté, une patte (7) pour sa fixation à l'os, faisant saillie vers l'extérieur, tandis que, sur son côté opposé à cette patte (7), cette cupule (5) comprend un crochet (6) conformé pour être engagé dans le trou obturateur du bassin, ladite patte (7) délimitant une face de contact avec l'os et ayant un axe médian longitudinal, et ladite cupule (5) ayant un plan médian qui coïncide avec le plan médian longitudinal dudit crochet (6) ; l'insert (3) est en matériau favorisant le glissement et délimite une cavité (35) de réception d'une tête fémorale prothétique, cet insert (3) étant destiné à être reçu dans ladite cavité (15) de la cupule (5) ; implant (1) caractérisé en ce que : - ladite patte (7) forme solidement corps avec la cupule (5) et est rigide, c'est-à-dire n'est pas prévue pour être déformée ; et - cette patte (7) est disposée comme suit : (i) lorsque l'implant (1) est vu de côté selon une direction perpendiculaire audit axe médian, cet axe médian forme un angle de 5 à 15 par rapport audit plan de l'ouverture (16) ; (ii) lorsque l'implant (1) est vu de côté selon une direction parallèle audit axe médian, ladite face de contact de la patte (7) forme un angle de 30 à 400 par rapport à ce même plan de l'ouverture (16), et (iii) lorsque l'implant (1) est vu selon une direction perpendiculaire audit plan de l'ouverture (16), ledit axe médian forme un angle de 7 à 17 avec ledit plan médian de la cupule (5). CLAIMS 1-Implant cotylo'fdien called "recovery", comprising a cup (5) and an insert (3); the cup (5) internally delimits a cavity (15) which opens to the outside through an opening (16) extending in a plane, and has, on one side, a tab (7) for its attachment to the bone , projecting outwards, while, on its side opposite this tab (7), this cup (5) comprises a hook (6) shaped to be engaged in the obturating hole of the pelvis, said tab (7) delimiting a contact face with the bone and having a longitudinal median axis, and said cup (5) having a median plane which coincides with the longitudinal median plane of said hook (6); the insert (3) is made of a material that promotes sliding and delimits a cavity (35) for receiving a prosthetic femoral head, this insert (3) being intended to be received in said cavity (15) of the cup (5) ; implant (1) characterized in that: - said tab (7) forms a solid body with the cup (5) and is rigid, that is to say is not intended to be deformed; and - this tab (7) is arranged as follows: (i) when the implant (1) is seen from the side in a direction perpendicular to said median axis, this median axis forms an angle of 5 to 15 relative to said plane of l 'opening (16); (ii) when the implant (1) is seen from the side in a direction parallel to said median axis, said contact face of the tab (7) forms an angle of 30 to 400 relative to this same plane of the opening ( 16), and (iii) when the implant (1) is seen in a direction perpendicular to said plane of the opening (16), said median axis forms an angle of 7 to 17 with said median plane of the cup (5) . 2-Implant cotyloïdien selon la revendication 1, caractérisé en ce que les angles précités sont respectivement de : (i) 10 , (ii) 350, et (iii) 120.  2-cotyloid implant according to claim 1, characterized in that the above-mentioned angles are respectively: (i) 10, (ii) 350, and (iii) 120. 3-Implant cotyloïdien selon la revendication 1 ou la revendication 2, caractérisé en ce que la face de la cupule (5) délimitant ladite cavité (15) est en forme de sphère creuse, et en ce que l'insert (3) présente, hormis au niveau de sa face (37) dans laquelle débouche la cavité  3-cotyloid implant according to claim 1 or claim 2, characterized in that the face of the cup (5) delimiting said cavity (15) is in the form of a hollow sphere, and in that the insert (3) has, except at the level of its face (37) into which the cavity opens <Desc/Clms Page number 9><Desc / Clms Page number 9> (35) qu'il délimite lui-même, une forme extérieure sphérique, de rayon légèrement inférieur au rayon de la cavité (15) de la cupule (5), de sorte que cet insert (3) peut se mouvoir à la manière d'une rotule par rapport à la cupule (5).  (35) which it delimits itself, a spherical external shape, of radius slightly less than the radius of the cavity (15) of the cup (5), so that this insert (3) can move in the manner d 'a ball joint with respect to the cup (5). 4-Implant cotyloldien selon l'une des revendications 1 à 3, caractérisé en ce que la cupule (5) présente un rebord (8) anti-luxation, faisant saillie du bord de la cupule (5) qui délimite l'ouverture (16) de la cavité (15), selon une direction parallèle à l'axe de cette cavité (15), ce rebord (8) s'étendant sur environ la moitié de la circonférence de la cupule (5) et étant situé sur le côté de cette cupule (5) sur lequel se trouve la patte (7).  4-acetabular implant according to one of claims 1 to 3, characterized in that the cup (5) has a rim (8) anti-dislocation, projecting from the edge of the cup (5) which defines the opening (16 ) of the cavity (15), in a direction parallel to the axis of this cavity (15), this rim (8) extending over approximately half of the circumference of the cup (5) and being located on the side of this cup (5) on which is the tab (7). 5-Implant cotyloldien selon l'une des revendications 1 à 4, caractérisé en ce que la cupule (5) comprend des pointes (9), nervures (10) et/ou autres aspérités faisant saillie de sa face extérieure.  5-cotylold implant according to one of claims 1 to 4, characterized in that the cup (5) comprises points (9), ribs (10) and / or other roughness projecting from its outer face. 6-Implant cotyloïdien selon la revendication 5, caractérisé en ce que la cupule (5) présente : - quatre pointes (9) équidistantes, symétriques par rapport audit plan médian, situées environ aux deux tiers de la hauteur de la cupule (5), et - deux séries de nervures méridiennes (10), situées à proximité de ladite ouverture (16), dans les zones séparant la patte (7) et le crochet (6).  6-acetabular implant according to claim 5, characterized in that the cup (5) has: - four points (9) equidistant, symmetrical with respect to said median plane, located about two thirds of the height of the cup (5), and - two series of meridian ribs (10), located near said opening (16), in the zones separating the tab (7) and the hook (6). 7-Implant cotyloïdien selon l'une des revendications 1 à 6, caractérisé en ce qu'il est réalisé par moulage en une seule pièce d'un alliage chrome-cobalt.  7-acetabular implant according to one of claims 1 to 6, characterized in that it is produced by molding in a single piece of a chrome-cobalt alloy. 8-Implant cotyloïdien selon l'une des revendications 1 à 7, caractérisé en ce qu'il présente une encoche (25) au niveau dudit plan médian de la cupule (5).  8-acetabular implant according to one of claims 1 to 7, characterized in that it has a notch (25) at said median plane of the cup (5). 9-Implant cotyloïdien selon l'une des revendications 1 à 8, caractérisé en ce que la face extérieure de la cupule (5) est au moins partiellement recouverte d'un matériau ostéo-inducteur.  9-cotyloid implant according to one of claims 1 to 8, characterized in that the outer face of the cup (5) is at least partially covered with an osteo-inductive material. 10-Implant cotyloïdien selon la revendication 9, caractérisé en ce que le matériau ostéo-inducteur est poreux. 10-cotyloid implant according to claim 9, characterized in that the osteo-inductive material is porous.
FR0100194A 2001-01-08 2001-01-08 COTYLOIDIAN IMPLANT SAID "REPEAT" Expired - Fee Related FR2819172B3 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6840959B2 (en) * 2001-07-05 2005-01-11 Howmedica Ostenics Corp. Pelvic prosthesis plus methods and tools for implantation
FR2858760A1 (en) * 2003-08-14 2005-02-18 Philippe Lapresle Acetabulum implant cup for total hip prosthesis, has inner surface to receive insert intended to receive head of femoral part of prosthesis, and outer edge having round and smooth surface
GB2406056A (en) * 2003-09-17 2005-03-23 Corin Ltd Bone tapping kit, fixation member and prosthetic cup
FR2860424A1 (en) * 2003-10-03 2005-04-08 Rech S Et De Fabrication S E R Reconstruction acetabular cup, has elongated legs fixed on cup set back from opening plane of cylindrical part, and bracket and/or secondary legs fixed on cylindrical part in order to level opening plane of cylindrical part
US7485148B2 (en) 2004-04-20 2009-02-03 Finsbury (Development) Limited Prosthesis
US7572296B2 (en) 2005-03-17 2009-08-11 Biomet Uk Limited Prosthesis
ITMI20082207A1 (en) * 2008-07-25 2010-06-13 Alessandro Vio MODIFIED VETERINARY HAM PROSTHESIS.
AU2012282519B2 (en) * 2011-07-12 2017-01-12 Materialise Nv Surgical instrument for the positioning of an alignment element
KR20220046063A (en) * 2020-10-06 2022-04-14 주식회사 코렌텍 Customized Pelvic Reconstruction Implant
KR20220046064A (en) * 2020-10-06 2022-04-14 주식회사 코렌텍 Customized Pelvic Reconstruction System

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6840959B2 (en) * 2001-07-05 2005-01-11 Howmedica Ostenics Corp. Pelvic prosthesis plus methods and tools for implantation
FR2858760A1 (en) * 2003-08-14 2005-02-18 Philippe Lapresle Acetabulum implant cup for total hip prosthesis, has inner surface to receive insert intended to receive head of femoral part of prosthesis, and outer edge having round and smooth surface
US7641656B2 (en) 2003-09-17 2010-01-05 Corin Limited Prosthetic cup
GB2406056A (en) * 2003-09-17 2005-03-23 Corin Ltd Bone tapping kit, fixation member and prosthetic cup
GB2406056B (en) * 2003-09-17 2007-07-11 Corin Ltd Prosthetic cup
FR2860424A1 (en) * 2003-10-03 2005-04-08 Rech S Et De Fabrication S E R Reconstruction acetabular cup, has elongated legs fixed on cup set back from opening plane of cylindrical part, and bracket and/or secondary legs fixed on cylindrical part in order to level opening plane of cylindrical part
US7485148B2 (en) 2004-04-20 2009-02-03 Finsbury (Development) Limited Prosthesis
US7572296B2 (en) 2005-03-17 2009-08-11 Biomet Uk Limited Prosthesis
ITMI20082207A1 (en) * 2008-07-25 2010-06-13 Alessandro Vio MODIFIED VETERINARY HAM PROSTHESIS.
AU2012282519B2 (en) * 2011-07-12 2017-01-12 Materialise Nv Surgical instrument for the positioning of an alignment element
KR20220046063A (en) * 2020-10-06 2022-04-14 주식회사 코렌텍 Customized Pelvic Reconstruction Implant
KR20220046064A (en) * 2020-10-06 2022-04-14 주식회사 코렌텍 Customized Pelvic Reconstruction System
KR102413391B1 (en) 2020-10-06 2022-06-29 주식회사 코렌텍 Customized Pelvic Reconstruction System
KR102435228B1 (en) 2020-10-06 2022-08-25 주식회사 코렌텍 Customized Pelvic Reconstruction Implant

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