EP2173281A1 - Universal acetabular cup for a hip prosthesis - Google Patents

Universal acetabular cup for a hip prosthesis

Info

Publication number
EP2173281A1
EP2173281A1 EP08776306A EP08776306A EP2173281A1 EP 2173281 A1 EP2173281 A1 EP 2173281A1 EP 08776306 A EP08776306 A EP 08776306A EP 08776306 A EP08776306 A EP 08776306A EP 2173281 A1 EP2173281 A1 EP 2173281A1
Authority
EP
European Patent Office
Prior art keywords
acetabular cup
appendage
hip prosthesis
stem
extension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08776306A
Other languages
German (de)
English (en)
French (fr)
Inventor
Sheila Ragbir
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.)
Adler Ortho Srl
Original Assignee
Mariasal Investment NV
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 Mariasal Investment NV filed Critical Mariasal Investment NV
Publication of EP2173281A1 publication Critical patent/EP2173281A1/en
Withdrawn legal-status Critical Current

Links

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
    • A61F2/30721—Accessories
    • 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
    • A61F2/30721—Accessories
    • A61F2/30749—Fixation appliances for connecting prostheses to the body
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30291—Three-dimensional shapes spirally-coiled, i.e. having a 2D spiral cross-section
    • 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
    • A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • 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
    • A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting 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
    • A61F2002/30329—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
    • A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
    • 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
    • A61F2002/30574—Special structural features of bone or joint prostheses not otherwise provided for with an integral complete or partial collar or flange
    • 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
    • A61F2002/30616—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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30787—Plurality of holes inclined obliquely with respect to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/3079—Stepped or enlarged apertures, e.g. having discrete diameter changes
    • 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
    • A61F2002/30795—Blind bores, e.g. of circular cross-section
    • A61F2002/30797—Blind bores, e.g. of circular cross-section internally-threaded
    • 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
    • A61F2002/30878—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
    • A61F2002/30894—Plurality of protrusions inclined obliquely with respect to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • 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
    • A61F2002/4619—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 for extraction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0091—Three-dimensional shapes helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section

Definitions

  • the present invention relates to the field of orthopaedic surgery and, more specifically, to the technical sector relating to devices used in a hip prosthesis.
  • the invention relates to a universal acetabular cup for a hip prosthesis which is improved by comparison with prior art acetabular cups, as described in the preamble of Claim 1, together with a use of the acetabular cup for the construction of a hip prosthesis as described in Claim 5.
  • the dependent Claims 2-4 represent further advantageous embodiments of the invention.
  • the acetabular cup forms part of the hip prosthesis and is a recessed component with a characteristic bowl shape in which the head of the stem rotates.
  • the stem is the other part of the prosthesis, which is inserted into the patient's femur.
  • the acetabular cup is housed in the acetabulum of the patient's pelvis, and forms the hip prosthesis in combination with the stem and its head.
  • acetabular cups there are many existing designs and geometrical shapes of acetabular cups at the present time, enabling the patient's requirements to be met according to the physiological conditions present in the patient's acetabulum. If the inner structure of the acetabulum is not degraded, the typical acetabular cup design is oversized with respect to the dimensions of the housing in the acetabulum, thus providing a "press-fit" connection between the acetabular cup and the said housing.
  • extension is simply an appendage which is provided on the acetabular cup and which is inserted into the iliac bone to fix the acetabular cup and so prevent it from moving with respect to the acetabulum: in other words, the extension enables the acetabular cup to be secured to the acetabulum.
  • a person skilled in the art namely an orthopaedic surgeon, uses the term "modified acetabular cup".
  • the extension is fixed by pressure, or by equivalent connecting means, to the acetabular cup to form a permanent connection; it is also possible for the extension to be integrated into the acetabular cup.
  • the stability of the implant is dependent on the connections between the acetabular cup and the appendage, and between the appendage and the patient's bone structure.
  • the appendage is fixed to the bone by the forcible penetration of one end of the extension into a substantially complementary cavity formed in the bone.
  • the object of the present invention is to provide an acetabular cup which can be used in any physiological condition of the acetabulum which is encountered in the patient, in other words an acetabular cup of a modular type which is adaptable to multiple configurations and fixing methods.
  • a further object of the invention is to provide an acetabular cup comprising a fixing with greater mechanical stability than that of the known designs.
  • the acetabular cup with an appendage, particularly an extension, of the known type has the disadvantage that it is not easy to insert the appendage into the acetabular region; the physiology of the acetabulum is different in each patient to be fitted with a prosthesis, and existing modified acetabular cups are not universal, but are designed for a specific range of fixing conditions, as described in GB 2 366 733 in the name of Corin.
  • the acetabular cup proposed by the invention has a plurality of through holes formed in the hemispherical body of the acetabular cup, with multiple inclinations with respect to the equator (i.e. the holes are on multiple parallels), by means of which the following can be connected, according to the physiological conditions inside the acetabulum:
  • an iliac stem 2 the term “iliac stem 2” denotes an appendage which can be positioned in a cavity of the iliac bone.
  • an iliac stem 2 and at least one extension 2a the term “extension” denotes an appendage whose dimension (i.e. cross section) is smaller than that of the iliac stem 2 and which is introduced from the inside of the acetabular cup so as to penetrate (and be fixed in) the bone; the latter element (the extension 2a), when used in combination with the iliac stem 2, has a supplementary securing function.
  • one or more extensions 2a also having a smaller cross section than an iliac stem 2 as mentioned above, all introduced into the bone through the holes 4 provided in the acetabular cup body Ia, these extensions being housed in the acetabular cavity after passing through the said holes 4.
  • the iliac stem 2 which is an element of the invention, is fixed to the acetabular cup, and specifically to the substantially hemispheric body of the acetabular cup Ia, by means of a screw V or any other equivalent fixing means.
  • the iliac stem 2 has a (female) thread 3 at one end for receiving a screw V.
  • the screw V is the means of connection between the appendage and the acetabular cup body Ia.
  • the extension 2a which is also an element of the invention, is characterized by a smaller cross section than that of the iliac stem 2, and is fixed to the acetabular cup body Ia by means of an extension fixing plug Vl.
  • the principal advantage of the invention is the modular nature of the acetabular cup, due to the multiple holes present on the parallels of the hemispheric body (of the acetabular cup), which enables the orthopaedic surgeon with a wide range of possible geometrical configurations for fixing the appendage, particularly the iliac stem, in such a way as to ensure good contact of the outer surface of the acetabular cup with the hollow bone region (i.e. the acetabulum) of the patient.
  • the invention therefore proposes a universal acetabular cup, also known as a modular acetabular cup for the reasons mentioned in the preceding paragraph, for a hip prosthesis, as described in the appended Claim 1.
  • Figure 1 is a lateral view of two appendages 2 and 2a, namely an iliac stem 2 provided with a thread at one end which serves to lock the acetabular cup, and an extension 2a, where the thread is used solely for extraction, since the locking is carried out by means of a suitable plug Vl .
  • Figure 2 shows a complete lateral and cross-sectional view of one embodiment of the implant proposed by the invention, fitted in the acetabulum.
  • the implant is fixed by means of two appendages, namely an iliac stem 2 and a supporting extension
  • the acetabular cup body Ia is substantially hemispheric, and is provided with through holes 4 which have different inclinations with respect to the equator
  • FIG. 3 shows the hemispheric body Ia of the acetabular cup, viewed from above, illustrating the through holes which are positioned with different inclinations with respect to the equator E (i.e. on different parallels).
  • the acetabular cup for a hip prosthesis proposed by the invention comprises a body of substantially hemispheric shape Ia 5 and an extension 2, for fixing the prosthesis into the pelvis, particularly by fixing it to the iliac bone or to other surrounding bony regions or to both, so as to prevent any movement of the acetabular cup with respect to the acetabulum.
  • the acetabular cup 1 is provided with a plurality of through holes 4, formed in the substantially hemispheric body Ia of the cup, these holes being characterized in that their axes converge on the centre of the acetabular cup body C.
  • the said holes are also at different inclinations (i.e. on different parallels) from each other with respect to the equator of the acetabular cup; in particular, the said inclinations vary over a range from about 30° to 70° .
  • the plurality of holes allows the orthopaedic surgeon to choose from the multiple possible configurations of the acetabular cup, the appendage and the acetabulum, thus adapting the implant to the specific morphological conditions (of the acetabulum) of the patient.
  • the fact that the aforementioned axes coincide allows an optimal fixing of the acetabular cup and the extension.
  • the appendage is substantially of two types:
  • An iliac stem provided with a conical or cylindrical end which can be introduced into the iliac bone to secure the acetabular cup to the said bone, the other end being in contact with the outer surface of the acetabular cup body Ia and having a female thread 3, or an equivalent fixing device, having an axis coinciding with the axis of a through hole 4.
  • the stem is connected permanently to the acetabular cup body Ia by a fixing means, in particular a screw V.
  • the orthopaedic surgeon initially fixes the stem 2 in the appropriate cavity prepared in the iliac bone, and then introduces the acetabular cup into the acetabular cavity, after which he fixes the cup to the stem by means of a screw V or any equivalent element.
  • the end of the stem nearer the body of the acetabular cup bears on the latter at a point coinciding with a through hole 4; more specifically, the axis of the stem coincides with the axis of the through hole 4.
  • An extension having a smaller cross section than that of the iliac stem and provided with a conical or cylindrical end which can be introduced into the bony region of the acetabulum.
  • the said extension has a cross section such that practically the whole of its length can pass through the through holes 4, and its outer shell is provided with a stop element, for example a shoulder S, having a shape such that it prevents the axial movement of the extension with respect to the acetabular cup body when the extension has been introduced into the hole.
  • the extension is locked and/or fixed permanently to the hemispheric body of the acetabular cup by fixing means, particularly a threaded plug Vl.
  • the smaller geometrical dimensions (i.e. cross section) of the extension with respect to the iliac stem are due to the difference in function between the two appendages.
  • the two aforementioned types of appendage can be used in a separate or complementary way.
  • the axes of the holes 4 used for fixing coincide with the axes of the appendages used, regardless of whether they are stems or extensions, thus enabling an optimal mechanical connection to be made.
  • the fact that the aforementioned axes coincide allows an optimal fixing of the acetabular cup and the extension.

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)
EP08776306A 2007-07-03 2008-06-27 Universal acetabular cup for a hip prosthesis Withdrawn EP2173281A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01069/07A CH702044B1 (it) 2007-07-03 2007-07-03 Cotile universale per protesi d'anca.
PCT/IB2008/001695 WO2009004450A1 (en) 2007-07-03 2008-06-27 Universal acetabular cup for a hip prosthesis

Publications (1)

Publication Number Publication Date
EP2173281A1 true EP2173281A1 (en) 2010-04-14

Family

ID=39873917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08776306A Withdrawn EP2173281A1 (en) 2007-07-03 2008-06-27 Universal acetabular cup for a hip prosthesis

Country Status (3)

Country Link
EP (1) EP2173281A1 (it)
CH (1) CH702044B1 (it)
WO (1) WO2009004450A1 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0922339D0 (en) * 2009-12-21 2010-02-03 Mcminn Derek J W Acetabular cup prothesis and introducer thereof
CN105105878A (zh) * 2015-07-27 2015-12-02 北京市春立正达医疗器械股份有限公司 一种髋臼垫块
IT202100009176A1 (it) * 2021-04-13 2022-10-13 Adler Ortho S P A Cotile a flessibilità differenziata.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE180655T1 (de) * 1993-04-15 1999-06-15 Sulzer Orthopaedie Ag Bausatz für eine künstliche gelenkspfanne, insbesondere eine hüftgelenkspfanne
DE19502503C1 (de) * 1995-01-27 1996-09-26 Amir Dr Zahedi Modulares Knochenimplantat mit Pfanne und Stiften
FR2803740B1 (fr) * 2000-01-18 2002-12-13 Louis Setiey Cupule cotyloidienne pour prothese totale de la hanche
DE20001940U1 (de) * 2000-01-28 2000-05-04 Merete Medical Gmbh Hüftpfanne mit radial gerichteten Vorsprüngen
DE10113614B4 (de) * 2001-03-20 2004-01-29 Eska Implants Gmbh & Co. Set für die Erstellung eines Implantates als Ersatz für eine zerstörte Beckenknochenpfanne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009004450A1 *

Also Published As

Publication number Publication date
CH702044B1 (it) 2011-04-29
WO2009004450A1 (en) 2009-01-08

Similar Documents

Publication Publication Date Title
US11857428B2 (en) Modular humeral prosthesis for an inverted shoulder prosthesis
CA2471779C (en) Constrained acetabular liner
AU2002336155B2 (en) Modular acetabular cup, and anchoring screw for fixing a prosthetic implant such as said acetabular cup
US5906644A (en) Adjustable modular orthopedic implant
EP2869788B1 (en) Humeral implant for a shoulder prosthesis
US5876459A (en) Adjustable modular orthopedic implant
US7097664B2 (en) Modular femoral stem component for a hip joint prosthesis
US7931691B2 (en) External proximal femoral prosthesis for total hip arthroplasty
US8500815B2 (en) Shoulder prosthesis with insert for locking screws
EP2712584B1 (en) Adjustable height arthroplasty plate
US5549703A (en) Orthopedic prosthesis apparatus with improved taper locking connection
EP1293179A1 (en) Resilient thimble for ball head of prosthetic joint
US20030050706A1 (en) Neck- slip-prothese
EP3829494A1 (en) Implants, systems and methods of using the same
US20040254646A1 (en) Provisional coupling mechanism
CA2597617A1 (en) Apparatus and method for shoulder arthroplasty
EP1063947A1 (en) Prosthesis having wedge-shaped body
CN113194885A (zh) 改进的用于肩关节假体的关节盂适配件
US20120116531A1 (en) Hip joint device and method
WO1998008468A1 (en) Adjustable modular orthopedic implant
US10806588B2 (en) Threaded augmentable acetabular shell with augments
WO2008028173A2 (en) Modular shoulder prosthesis
EP2451400B1 (en) Hip joint device
EP2173281A1 (en) Universal acetabular cup for a hip prosthesis
CN108601660A (zh) 人造关节植入物及髋关节内假体

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20100129

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DRAKKAR B.V.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ADLER ORTHO S.R.L.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ADLER ORTHO S.R.L.

17Q First examination report despatched

Effective date: 20150331

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150811