EP0932379A1 - A joint replacement prosthesis - Google Patents
A joint replacement prosthesisInfo
- Publication number
- EP0932379A1 EP0932379A1 EP97937910A EP97937910A EP0932379A1 EP 0932379 A1 EP0932379 A1 EP 0932379A1 EP 97937910 A EP97937910 A EP 97937910A EP 97937910 A EP97937910 A EP 97937910A EP 0932379 A1 EP0932379 A1 EP 0932379A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- prosthesis
- conical
- conical base
- hemispherical
- base part
- 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- Withdrawn
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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
- A61F2/3603—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices implanted without ablation of the whole natural femoral head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
- A61B17/1668—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper femur
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1742—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip
- A61B17/175—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip for preparing the femur for hip prosthesis insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1778—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the shoulder
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
-
- 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
- A61F2/40—Joints for shoulders
- A61F2/4003—Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft
-
- 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
- A61F2/4607—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 hip femoral endoprostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1684—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the shoulder
-
- 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
- A61F2/30767—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
- 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
-
- 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
- A61F2/40—Joints for shoulders
-
- 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
- A61F2/40—Joints for shoulders
- A61F2/4081—Glenoid components, e.g. 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
- A61F2/46—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
- A61F2/4612—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 shoulders
-
- 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
- A61F2002/30205—Three-dimensional shapes conical
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- 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
- A61F2002/30785—Plurality of holes parallel
-
- 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
-
- 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
- A61F2002/30879—Ribs
-
- 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
- A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
-
- 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
- A61F2002/30934—Special articulating surfaces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3611—Heads or epiphyseal parts of femur
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
- A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
- A61F2002/3647—Necks pierced with a longitudinal bore
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/365—Connections of heads to necks
-
- 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
- A61F2/40—Joints for shoulders
- A61F2/4003—Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft
- A61F2002/4007—Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft implanted without ablation of the whole natural humeral head
-
- 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
- A61F2/40—Joints for shoulders
- A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
- A61F2002/4018—Heads or epiphyseal parts of humerus
-
- 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
- A61F2/40—Joints for shoulders
- A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
- A61F2002/4029—Necks
-
- 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
- A61F2/40—Joints for shoulders
- A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
- A61F2002/4037—Connections of heads to necks
-
- 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
- A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
-
- 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
- A61F2002/4681—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor by applying mechanical shocks, e.g. by hammering
-
- 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
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
-
- A—HUMAN NECESSITIES
- 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
- A61F2230/0067—Three-dimensional shapes conical
-
- 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
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—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
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00179—Ceramics or ceramic-like structures
- A61F2310/00185—Ceramics or ceramic-like structures based on metal oxides
- A61F2310/00203—Ceramics or ceramic-like structures based on metal oxides containing alumina or aluminium oxide
-
- 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
-
- 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
- A61F2310/00856—Coating or prosthesis-covering structure made of compounds based on metal nitrides
- A61F2310/0088—Coating made of titanium nitride
Definitions
- the invention comprises a joint replacement prosthesis, a method of fitting a joint replacement prosthesis, and tools for use in fitting a joint replacement prosthesis.
- Hip joint replacement has been a very successful procedure for the treatment of elderly patients suffering from osteoarthritis.
- the prosthesis On the femoral side the prosthesis consists of a metal ball supported by a short metal neck attached to a stem that is inserted into the medullary cavity of the femur.
- the implantation of these devices therefore requires the removal of a large part of the proximal femur (head and neck) and the reaming of
- the acetabular component of a hip replacement prosthesis typically comprises an acetabular cup fabricated in ultra high molecular weight polyethylene (UHMWPE), which runs against a metal or ceramic ball of the femoral component.
- UHMWPE ultra high molecular weight polyethylene
- a joint replacement prosthesis As well as providing maximum resistance to loosening, another requirement for a joint replacement prosthesis is that it must be wear resistant at the joint interface and also bio-compatible at the bone interface.
- the invention provides an improved or at least alternative joint replacement prosthesis, and method of fitting a joint replacement prosthesis, and also tools for use in fitting a joint replacement prosthesis.
- the invention comprises a joint replacement prosthesis to replace a superior joint surface, comprising a conical base part and a hemispherical or part hemispherical top providing a hemispherical or part hemispherical replacement bearing surface, the prosthesis being shaped and sized to be a wedge fit in a conical recess formed in the head or neck of a human femur or humerus without removal of all of the neck of the femur or humerus.
- the angle of the sides of the conical base part may be in the range 40 to 120 degrees, and preferably 50 to 90 degrees.
- the prosthesis may be a one part prosthesis or may be a two part prosthesis comprising a conical base part and a hemispherical or part hemispherical top part which are coupled together.
- the conical base part or the hemispherical top part of a two part prosthesis may incorporate a protrusion from the base part or the top part which engages into a recess in the top part or the base part to couple the conical base part and the hemispherical top part to form the prosthesis, for example.
- Two part prostheses of the invention preferably comprise at least one access hole through the base part to enable a screw or other fastening device to pass through the base part to assist in securing the base part in the conical recess in the femur or humerus.
- a one part-prosthesis may also optionally comprise at least one access hole through the prosthesis to enable a screw or similar to pass through the prosthesis to assist in securing the prosthesis in place.
- the conical base of the prosthesis comprises a pin extending from the apex of the conical base to further assist in locating the conical base in the conical recess in the femur or humerus.
- the external surface of the conical base comprises a roughened surface, to encourage bone regrowth into the roughened surface after initial fitting of the prosthesis.
- the conical base may have a roughened surface plus additionally have a coating of biological material e.g. hydroxyapatite, calcium, phosphate, or a bone enhancing material.
- biological material e.g. hydroxyapatite, calcium, phosphate, or a bone enhancing material.
- the conical base comprises one or more fins extending radially from the conical base to engage into bone to further assist in locating the prosthesis.
- the conical base includes a number of ribs on the exterior of the conical base.
- the conical base part of a two part prosthesis is formed from a metal or metal alloy, such as titanium or titanium alloy or other biocompatible metal.
- the hemispherical top part is preferably formed from a biocompatible wear resistant material such as alumina, an alloy of cobalt, or other biocompatible hard ceramic or metal material.
- a one part prosthesis is formed from a metal or metal alloy such as titanium or titanium alloy, covered over the hemispherical or part hemispherical top surface of the prosthesis with alumina or other biocompatible hard ceramic material to form the replacement bearing surface.
- a metal or metal alloy such as titanium or titanium alloy
- the invention comprises a method of fitting a joint replacement prosthesis, comprising:
- a prosthesis component comprising a conical base and a hemispherical or part hemispherical top surface into the conical recess in the bone.
- the invention comprises a tool for use in fitting a joint replacement prosthesis, comprising a contact surface at one end of the tool to press indirectly against the end of a bone opposite to the end to which the joint replacement component providing the superior surface of the artificial joint is to be fitted, and comprising a contact surface at an opposite end of the tool to bear against the superior surface of a joint to be replaced on the other end of the bone, before removal thereof, and a hole through the tool part which bears against said superior surface through which a drill bit can pass to guide drilling of a hole into the bone at a correct angle.
- hip joint replacement in which the prosthesis component providing the superior joint surface is fitted to the femur and a cup component if fitted is optionally also fitted to the acetabulum if required, but the invention may also have application to shoulder joint replacement where the prosthesis component is fitted to the humerus.
- Figure 1 shows in diagrammatic cross-section a typical prior art hip replacement prosthesis fitted to a hip joint
- Figure 2 shows a preferred form of two part hip replacement prosthesis of the invention similarly fitted to a hip joint
- Figure 3 is a cross-sectional view through the preferred form two part hip replacement prosthesis, which provides the superior surface of the artificial joint,
- Figure 4 shows the hemispherical top part of the preferred form two part prosthesis of Figure 3,
- Figure 5 shows the conical base part of the preferred form two part hip replacement prosthesis
- Figure 6 is a view of the conical base part of the preferred form two part prosthesis in the direction of arrow A in Figure 5,
- Figure 7 shows in diagrammatic cross-section a preferred form one part prosthesis of the invention fitted to a femur
- Figures 8a to 8d show steps in fitting a hip replacement prosthesis according to the method of the invention
- Figure 9 shows a preferred form of tool for use in drilling a pilot hole during fitting of a hip joint replacement prosthesis accordmg to the method of the invention
- Figure 10 shows a cutter for use in a drill, for forming a conical recess in bone during fitting of the joint replacement prosthesis
- Figure 11 shows a slide hammer for use in fitting the conical base part of the prosthesis
- Figure 12 shows the preferred form of tool of Fig 8 fitted to a femur bone
- Figure 13 diagrammatically shows in cross-section a prosthesis of the invention fitted to a femur bone illustrating how, over time after fitting, regrowth of bone into the roughened exterior surface of the conical base part of the prosthesis can occur to assist in locating the prosthesis.
- FIG. 1 shows a typical prior art hip replacement prosthesis.
- the prosthesis On the femoral side the prosthesis consists of a metal ball 2 on a short metal neck 3, attached to a stem that is inserted into the medullary cavity in the femur 1. Installation of the device requires removal of a large part of the head and neck of the femur and reaming of cancellous bone from the femur.
- an acetabular cup 4 typically fabricated from ultra high molecular weight polyethylene (UHMWPE) is fixed in position with a bone screw (see screw 9 in Fig 2) or is bonded onto the surface of the acetabulum 5 using a methyl-methacrylate or similar cement.
- UHMWPE ultra high molecular weight polyethylene
- Figure 2 shows a preferred form two part prosthesis of the invention similarly fitted to a hip joint.
- the preferred form two part prosthesis comprises a conical base part 6 which is fitted into a conical recess cut in the head of the femur, and a hemispherical top part 7. Where the acetabulum is also relined, the prosthesis bears against an acetabular cup component 8.
- the conical base of the prosthesis is a wedge fit into the conical recess cut in the head of the femur which provides maximum resistance to loosening, and the size of the prosthesis is such that only a part of bone material of the head and neck of the femur is removed, and part of the head or at least all or a substantial part of the neck of the femur remains. Because the prosthesis of the invention does not require that all of the neck of the femur be removed, the option of fitting a conventional prosthesis later in the life of the patient remains if necessary.
- screws will usually be used to assist in securing the prosthesis into the conical recess in the head of the femur in addition to the seating of the conical base into the conical recess, but in a prosthesis having a steeper conical base, the use of additional securing screws may not be required, as will be further described.
- the two part prosthesis comprises a conical base part 6 and a hemispherical top part 7 as described.
- the conical base part 6 is typically formed from a metal such as titanium or titanium-alloy. Titanium and its alloys are "bone friendly" and easy to machine (but are less preferred for bearing surface applications).
- the conical exterior surface 6a of the conical base part is preferably roughened to provide a surface into which bone regrowth will occur in the months after the prosthesis has been surgically fitted to a patient.
- the roughened surface is preferably formed by electro-discharge machining more commonly known as spark erosion, which involves the removal of material using an electrical discharge from an electrode held above the surface to be modified, in a bath that contains an electrolyte such as kerosene.
- spark erosion involves the removal of material using an electrical discharge from an electrode held above the surface to be modified, in a bath that contains an electrolyte such as kerosene.
- the electrode is precisely supported above the surface to be eroded by electro- mechanical feedback control, and is the negative profile of the surface.
- parts of the conical exterior surface of the conical base part are removed so that the surface is eroded to a complex shape. This provides a surface comprising a multitude of small cavities into which bone regrowth will occur to enhance fixation of the
- Figure 13 shows diagrammatically a cross section through the top of a femur some months after fitting of a prosthesis component of the invention showing bone regrowth into the spark eroded lower surface of the conical base part 6.
- the depth of the spark eroded surface is enlarged for illustrative purposes.
- Spark erosion is a preferred technique for forming a roughened surface on the conical external surface 6a of the base component 6, but other techniques for forming a roughened surface may be less preferably utilised such as chemical etching for example.
- the conical base 6 comprises a number of holes 10 axially through the base component to enable fastening devices such as screws to pass through the base part into bone to secure the base part to bone (see also Figure 8c).
- the conical base part comprises six screw holes through the part whereas in general only three fixing screws will be fitted when fitting the prosthesis, to give more choices of position for screw placement by the surgeon. For example if on fitting the prosthesis part 6 in place during surgery, one of the screw holes 10 is found to be positioned in a weakened area of bone then the surgeon can use an adjacent fixation hole. However it is possible that more or less than three screws may be utilised and that more or less than six screw holes may be provided through the base part 4.
- a protrusion 6b extends from the opposite side of the conical base part and into a recess 7a in the underside of the hemispherical top part 7, to couple the hemispherical top part and the conical base part.
- the protrusion 6b preferably has a slight taper to a reduced diameter at its distal end, and the recess 7a in the hemispherical top part has a similar taper, to assist in holding the hemispherical top part on the conical base part together.
- the protrusion may extend from the underside of the hemispherical top part into a recess in the conical base part.
- two or three smaller pins from the conical base part may extend into matching holes in the underside of the hemispherical top part or vice versa.
- the hemispherical top part 7 is formed of a ceramic such as alumina of high density, the hemispherical or part hemispherical external surface of which is highly polished, to provide a bearing surface with minimum friction and the longest possible working life.
- the surface or part of the prosthesis which contacts bone may be formed of a "bone friendly" metal such as titanium or titanium alloy, while the bearing surface of the prosthesis which should have minimum friction and maximum resistance to wear can be formed of a very hard material such as a high density ceramic material or a CoCrMo alloy or other hard bio compatible material, polished to a smooth bearing surface.
- the curved external bearing surface of the hemispherical top part 7 may comprise a surface of the material from which the hemispherical top part is formed which has been machined and polished.
- the external surface of the hemispherical top part may first be coated with a harder material such as titanium nitride, by a technique such as vacuum deposition or similar.
- the conical part 6 base may be provided with three fins 11 or more or less such fins, which during fitting of the prosthesis will engage into the bone surface to enhance rotational stability of the device.
- the conical external surface 6a of the base part may be provided with one or more ribs from the wider periphery of the base part towards the apex or around the external surface 6a or in any other configuration, to further assist in locating the conical base part against rotation.
- the ribs may be present on the external surface of the conical base part before spark erosion so that the conical, ribbed surface is roughened by spark erosion as previously described.
- the ribs or fins may be replaced by other protruding features as will be known in the art. Features as pins for example could also be used although this should not be seen to be limiting. The essential effect is to prevent rotation of the prosthesis when in place.
- the conical base part also comprises a pin portion 6c extending from the apex of the conical base part which when the prosthesis is installed according to the method of the invention will further assist in locating the prosthesis.
- Figure 7 shows a preferred form one part prosthesis of the invention fitted to the head of a femur.
- the one part prosthesis comprises a conical base 6 which is similarly fitted into a conical recess cut in the head of the femur, and a part spherical top surface 7.
- the one part prosthesis is typically formed from a metal such as titanium or titanium- alloy.
- the conical exterior surface of the conical base is preferably roughened to provide a surface into which bone regrowth will occur as referred to previously, and is again preferably formed by spark erosion.
- the top surface 7a of the prosthesis is preferably coated with a harder material such as titanium nitride, by a technique such as vacuum deposition or similar, and is machined and polished.
- the angle of the walls of the conical base of the one part prosthesis shown is steeper so that the prosthesis is a wedge fit into the conical recess in the head of the femur, and additional screw fixing or similar may not be required.
- a screw may pass through an access hole through the centre of the prosthesis for example and into bone below the prosthesis.
- the head of the screw is recessed below the top surface 7 of the prosthesis.
- Such an additional fixing screw may not be required however.
- the one part prosthesis may be provided with fins 11 or similar, as described above for the two part prosthesis of the invention, and comprises a pin portion 6c extending from the apex of the conical base of the prosthesis which assists in locating the prosthesis.
- Figures 8a to 8d show fitting of a prosthesis of the invention to a femur utilising the method of the invention.
- a pilot or guide hole 12 is drilled into the femur coincident with the axis on which the prosthesis is to be fixed. This guide hole 12 is drilled through the centre of curvature of the superior surface of the femoral head as shown.
- a tool such as that shown in Figures 9 and 12 may be used.
- the tool is shown for illustrative purposes fitted to a cadaveric femur bone.
- the tool comprises a contact surface, suitably formed by a flexible cup 13 or similar at one end, and a movable arm 14 at the other end.
- the movable arm 14 is slidably coupled to the shank 15 of the tool and may be fixed in position by a screw coupling 16 which may be tightened or clamped by other suitable means which will hold the arm 14 in position when locked.
- a screw coupling 16 which may be tightened or clamped by other suitable means which will hold the arm 14 in position when locked.
- the arm 14 is moved along shank 15 until metal locating cone 17 is fitted against the femoral head, and then the arm 14 is locked in position.
- the guide hole 12 into the femoral head is drilled through a correctly angled hole in the end of the movable arm to guide drilling of the hole 12 into the femoral head at the correct angle.
- a drill bit 18 indicates the angle of the drilling guide hole through the end of the movable arm 14 and locating cone 17. The angle of the locating cone 17 can be adjusted by the surgeon prior to beginning drilling of the guide hole 12.
- FIG. 10 One form of cutting bit which is fitted to a surgical drill (similar to a drill bit) is shown in Figure 10.
- the cutting bit comprises teeth 20 shaped similar to a countersink, so that the cutting bit will form a conical recess as shown in Figure 8b, the angle of the side walls of which matches the angle of the conical exterior surface 6a of the conical base part 6 of the prosthesis.
- the cutting bit comprises a centre pin 20a which extends beyond the teeth 20 of the bit. In use the central pin is initially inserted into the axial guide hole 12 before cutting of the conical recess 19 begins, to ensure correct location and orientation of the conical recess. A collar 21 around the exterior does not rotate with the bit and can be held by the surgeon.
- the prosthesis is fitted in place.
- the prosthesis may be tapped into place using a small rubber hammer for example
- the conical base part 6 of the prosthesis is first fitted in place.
- the pin 6c on the apex end thereof will engage into the remaining part of the guide hole 12, to further assist in correctly locating the prosthesis.
- a slide hammer may be used to knock the base part into position, tor example.
- Figure 11 shows a suitable form of slide hammer, comprising a shaft 22 with a sliding weight 23.
- a conical base part 6 of a prosthesis of the invention is shown on the end of the slide hammer.
- Such a slide hammer may be used to tap the conical base part of the two part prosthesis into position as shown in Figure 8c, to engage the radially extending fins 11 and ribs if provided on the external conical surface of the conical base into the femoral bone.
- bone screws 24 are fitted and screwed securely home to further fix the prosthesis part to the femoral head.
- the hemispherical top part 7 may then be fitted over the protrusion 6b of the conical base part, to complete fitting of the prosthesis, as shown in Figure 8d.
- Figure 13 shows enlarged and diagrammatically bone regrowth into the spark eroded roughened surface of the conical base part at the interface between the prosthesis and femoral bone. Such regrowth will occur over a period of months following fitting of the prosthesis, and further locks the prosthesis in place to inhibit subsequent loosening.
- spark erosion is one preferred means for roughening the external surface of the
- the conical base part of the prosthesis but the bone contact surface of the prosthesis may be roughened by other means, and/or may incorporate hydroxyapatite, calcium, phosphate, or some other bone enhancing material.
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Dentistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ29921396 | 1996-08-21 | ||
NZ29921396 | 1996-08-21 | ||
PCT/NZ1997/000100 WO1998007393A1 (en) | 1996-08-21 | 1997-08-21 | A joint replacement prosthesis |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0932379A1 true EP0932379A1 (en) | 1999-08-04 |
EP0932379A4 EP0932379A4 (en) | 2006-06-21 |
Family
ID=19925901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97937910A Withdrawn EP0932379A4 (en) | 1996-08-21 | 1997-08-21 | A joint replacement prosthesis |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0932379A4 (en) |
AU (1) | AU4036097A (en) |
WO (1) | WO1998007393A1 (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9600208D0 (en) | 1996-01-19 | 1996-01-19 | Astra Ab | Fixture and prosthesis including the same |
SE9700300D0 (en) | 1997-01-31 | 1997-01-31 | Astra Ab | Reamer |
US6120507A (en) * | 1999-01-29 | 2000-09-19 | Bristol-Myers Squibb Company | Instrument and method for seating prosthesis |
DE19904126A1 (en) * | 1999-02-03 | 2000-08-10 | Ceramtec Ag | Hip endoprosthesis in which at least the articulation surface of the femoral head is replaced |
CH690397A5 (en) * | 1999-08-23 | 2000-08-31 | Emanuel Gautier | Modular segmentary prosthesis for partial replacement of head of femur comprises carrier component, cap and correcting rings between them, with modularity of prosthesis safeguarded by conical connections between components |
GB0007391D0 (en) * | 2000-03-27 | 2000-05-17 | Benoist Girard & Cie | Prosthetic femoral component |
GB0007392D0 (en) | 2000-03-27 | 2000-05-17 | Benoist Girard & Cie | Prosthetic femoral component |
EP1205163B1 (en) * | 2000-11-07 | 2009-04-15 | Erik Leonard Hoffman | Fastening element for an implant, in particular a hip prosthesis |
NL1016551C2 (en) * | 2000-11-07 | 2002-05-14 | Erik Leonard Hoffman | Fastening element, for hip prosthesis, has plate-shaped supporting element, and hollow pin driven into spongy bone, and secured by fixing plate and openings through which bone can grow |
ATE330565T1 (en) * | 2001-04-27 | 2006-07-15 | Zimmer Gmbh | DRILLING JIG FOR DETERMINING THE AXIS OF A FEMURAL HEAD PROSTHESIS |
DE20120241U1 (en) * | 2001-12-14 | 2003-04-24 | KERAMED Medizintechnik GmbH, 07646 Mörsdorf | Endoprosthesis |
GB0207170D0 (en) | 2002-03-26 | 2002-05-08 | Mcminn Derek J W | Hip joint prosthesis |
US8545506B2 (en) | 2003-03-31 | 2013-10-01 | DePuy Synthes Products, LLC | Cutting guide for use with an extended articulation orthopaedic implant |
US8366713B2 (en) | 2003-03-31 | 2013-02-05 | Depuy Products, Inc. | Arthroplasty instruments and associated method |
US7338498B2 (en) | 2003-03-31 | 2008-03-04 | Depuy Products, Inc. | Prosthetic implant, trial and associated method |
US7527631B2 (en) | 2003-03-31 | 2009-05-05 | Depuy Products, Inc. | Arthroplasty sizing gauge |
US8105327B2 (en) | 2003-03-31 | 2012-01-31 | Depuy Products, Inc. | Punch, implant and associated method |
US7517364B2 (en) | 2003-03-31 | 2009-04-14 | Depuy Products, Inc. | Extended articulation orthopaedic implant and associated method |
GB2492810A (en) * | 2011-07-13 | 2013-01-16 | Upper Limb Innovations Ltd | Prosthesis head and base with offset attachment means |
CN104887353A (en) * | 2015-06-26 | 2015-09-09 | 北京市春立正达医疗器械股份有限公司 | Femoral head prosthesis |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3923154A1 (en) * | 1989-07-13 | 1991-01-24 | Orthoplant Endoprothetik | Hip bone endoprosthesis - with hemispherical condyle and threaded anchorage pin of specified length |
WO1992012691A1 (en) * | 1991-01-25 | 1992-08-06 | Heinz Winkler | Endoprosthesis, especially for the hip joint |
DE4220217A1 (en) * | 1992-06-20 | 1993-12-23 | S & G Implants Gmbh | Endoprosthesis for shoulder joint head replacement - has metal cap, whose inner surface has open cell or pore structure and has conical shaft tapering towards full end and forming sleeve |
WO1996001588A1 (en) * | 1994-07-12 | 1996-01-25 | Biomicron | Apparatus for resectioning knee condyles, enabling a prosthesis to be fitted and method for positioning such an apparatus |
US5571203A (en) * | 1993-06-18 | 1996-11-05 | Masini; Michael A. | Bone-conserving hip system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2834297C3 (en) * | 1978-08-04 | 1981-01-29 | Orthoplant Orthopaedische Implantate Gmbh & Co Kg, 2800 Bremen | Device for processing a bone to be provided with a prosthesis cap at the end |
US4846840A (en) * | 1986-09-09 | 1989-07-11 | Sylvain Leclercq | Joint prosthesis |
US5180384A (en) * | 1991-02-08 | 1993-01-19 | Mikhail Michael W E | Method for implanting a patellar prosthesis |
US5643272A (en) * | 1994-09-02 | 1997-07-01 | Hudson Surgical Design, Inc. | Method and apparatus for tibial resection |
US5649930A (en) * | 1996-01-26 | 1997-07-22 | Kertzner; Richard I. | Orthopedic centering tool |
-
1997
- 1997-08-21 EP EP97937910A patent/EP0932379A4/en not_active Withdrawn
- 1997-08-21 AU AU40360/97A patent/AU4036097A/en not_active Abandoned
- 1997-08-21 WO PCT/NZ1997/000100 patent/WO1998007393A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3923154A1 (en) * | 1989-07-13 | 1991-01-24 | Orthoplant Endoprothetik | Hip bone endoprosthesis - with hemispherical condyle and threaded anchorage pin of specified length |
WO1992012691A1 (en) * | 1991-01-25 | 1992-08-06 | Heinz Winkler | Endoprosthesis, especially for the hip joint |
DE4220217A1 (en) * | 1992-06-20 | 1993-12-23 | S & G Implants Gmbh | Endoprosthesis for shoulder joint head replacement - has metal cap, whose inner surface has open cell or pore structure and has conical shaft tapering towards full end and forming sleeve |
US5571203A (en) * | 1993-06-18 | 1996-11-05 | Masini; Michael A. | Bone-conserving hip system |
WO1996001588A1 (en) * | 1994-07-12 | 1996-01-25 | Biomicron | Apparatus for resectioning knee condyles, enabling a prosthesis to be fitted and method for positioning such an apparatus |
Non-Patent Citations (1)
Title |
---|
See also references of WO9807393A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU4036097A (en) | 1998-03-06 |
WO1998007393A1 (en) | 1998-02-26 |
EP0932379A4 (en) | 2006-06-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20020072805A1 (en) | Joint replacement prosthesis | |
WO1998007393A1 (en) | A joint replacement prosthesis | |
US4976740A (en) | Anchored femoral dome | |
US7141073B2 (en) | Compliant fixation of external prosthesis | |
US9937048B2 (en) | Femoral stem including an anchor to facilitate assembly and implantation | |
US6409768B1 (en) | Screw anchored joint prosthesis | |
US6712855B2 (en) | Compliant tibial tray assembly | |
US6416553B1 (en) | Method and apparatus for providing a modular acetabular prosthesis | |
EP1825834B1 (en) | Apparatus for aligning a taper lock connection | |
AU770466B2 (en) | Prosthesis system | |
EP1138283B1 (en) | Femoral hip prosthesis | |
US20030050704A1 (en) | Prosthesis | |
WO1998006343A1 (en) | Patella implant for prosthetic knee joint | |
US11712340B2 (en) | Hemi arthroplasty joint implant | |
US6656187B1 (en) | Adjustable orthopaedic instrument | |
EP2268232B1 (en) | A cup component of an orthopaedic joint prosthesis | |
WO2003094700A2 (en) | Method and instruments for inserting modular implant components | |
US10603178B2 (en) | Prosthetic hip system | |
AU6555101A (en) | A joint replacement prosthesis | |
CA2264283A1 (en) | A joint replacement prosthesis | |
WO2024184161A1 (en) | Orthopaedic surgical instrument and system for installing a cementless femoral stem component in a direct anterior approach hip replacement surgical procedure |
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: 19990322 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7A 61F 2/40 B Ipc: 7A 61F 2/36 A |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20060522 |
|
17Q | First examination report despatched |
Effective date: 20061114 |
|
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: 20070301 |