DE2618763A1 - PROSTHESIS TO REPLACE A JOINT - Google Patents

PROSTHESIS TO REPLACE A JOINT

Info

Publication number
DE2618763A1
DE2618763A1 DE19762618763 DE2618763A DE2618763A1 DE 2618763 A1 DE2618763 A1 DE 2618763A1 DE 19762618763 DE19762618763 DE 19762618763 DE 2618763 A DE2618763 A DE 2618763A DE 2618763 A1 DE2618763 A1 DE 2618763A1
Authority
DE
Germany
Prior art keywords
shaft
insert
prosthesis according
spherical part
prosthesis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19762618763
Other languages
German (de)
Other versions
DE2618763C2 (en
Inventor
Daniel Blanquaert
Maurice Ribonet
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.)
Ceraver SA
Original Assignee
Ceraver SA
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 Ceraver SA filed Critical Ceraver SA
Publication of DE2618763A1 publication Critical patent/DE2618763A1/en
Application granted granted Critical
Publication of DE2618763C2 publication Critical patent/DE2618763C2/en
Expired 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
    • A61F2/32—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
    • 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
    • A61F2/3662—Femoral shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30107—Properties of materials and coating materials using materials or accessories for preventing galvanic or electrolytic corrosion
    • 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
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30179—X-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/3037—Translation along the common longitudinal axis, e.g. piston
    • A61F2002/30373—Translation along the common longitudinal axis, e.g. piston with additional means for preventing said translation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/30403—Longitudinally-oriented cooperating ribs and grooves on mating lateral surfaces of a mainly longitudinal connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30405—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
    • A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
    • 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
    • A61F2002/30474—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using an intermediate sleeve interposed between both prosthetic parts to be coupled
    • 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
    • A61F2002/30492—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking pin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30495—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking ring
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2002/30968—Sintering
    • 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
    • A61F2002/3241—Joints for the hip having a ring, e.g. for locking the femoral head into the acetabular cup
    • 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
    • A61F2002/365—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
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0009—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using materials or accessories for preventing galvanic or electrolytic corrosion
    • 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
    • A61F2220/0033—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
    • 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
    • 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
    • A61F2220/0058—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
    • 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
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/0058—X-shaped
    • 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
    • A61F2310/00035—Other metals or alloys
    • A61F2310/00113—Silver or Ag-based 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
    • A61F2310/00035—Other metals or alloys
    • A61F2310/00155—Gold or Au-based alloys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures
    • 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

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)
  • Materials For Medical Uses (AREA)

Description

Fo 9775 DFo 9775 D

Dipl.-ing. Jürgen WEiNiViUU-EFS Dipl.-ing. Jürgen WEiNiViUU-EFS

PAXENTASSESSORPAXENTASSESSOR

SOiBFI GmbH 2618 763SOiBFI GmbH 2618 763

8OOο i\. uηchen 8O
Zeppelinstr. 638OOο i \. uηchen 8O
Zeppelinstrasse 63

CERAVER S.A.
12, rue de la Baume
75008 PARIS
FrankreichCERAVER SA
12, rue de la Baume
75008 PARIS
France

PROTHESE ZUM ERSATZ FÜR EIN GELENKPROSTHESIS TO REPLACE A JOINT

Zusatz zu Patent Nr. 21 34 316Addendum to Patent No. 21 34 316

Die Erfindung gemäß dem Hauptpatent betrifft eine Prothese zum Ersatz für ein Gelenk, die aus einem kugelförmigen und einem pfannenformxgen Teil besteht, wobei das kugelförmige Teil mit Hilfe eines Schaftes aus Metall im Knochen verankerbar ist und beide Teile wenigstens im Bereich der gegenseitigen Berührungsflächen aus hartem Aluminiumoxyd bestehen.The invention according to the main patent relates to a prosthesis to replace a joint, which consists of a spherical and a socket-shaped part, wherein the spherical part can be anchored in the bone with the aid of a metal shaft and both parts consist of hard aluminum oxide at least in the area of the mutual contact surfaces.

Bei der im Hauptpatent beschriebenen Prothese ist das kugelförmige Teil mit einem Sackloch versehen, in das ein Ende des Stabs eingesetzt und anschließend verklebt wird.In the prosthesis described in the main patent, the spherical part is provided with a blind hole into which one end of the rod is inserted and then glued.

Das Verkleben gewährleistet jedoch keine über einen langen Zeitraum hinweg konstant gute mechanische Verbindung zwischen Kopf und Stab und führt darüber hinaus in die Prothese organische Fremdstoffe ein, die vom Organismus nicht immer vertragen werden.However, gluing does not guarantee a consistently good mechanical connection over a long period of time between head and rod and also introduces organic foreign substances into the prosthesis, which the organism cannot always tolerate will.

609847/0309609847/0309

1=3 & —' 1 = 3 & - '

Dia Erfindung zielt darauf abff die oben angeführten Nachteile zu beheben und eine Prothese zu schaffen, die eine ausgezeichnete mechanische Festigkeit der Verbindung zwischen Kopf und Schaft des Oberschenkelteils aufweist, ohne daß organische Klebstoffe verwendet werden, und die darüber hinaus einen Schaft enthält, der in physikalischen und mechanischen Eigenschaften denen des Knochens näherkommt als die üblicherweise verwendeten Metalle oder Legierungen.Dia invention aims ff to remedy the above drawbacks and to provide a prosthesis which has an excellent mechanical strength of the connection between the head and stem of the femoral component may be used without any organic adhesives, and also includes a shaft which in physical and mechanical properties come closer to those of the bone than the commonly used metals or alloys.

Die Erfindung ist bei der eingangs definierten Prothese dadurch gekennzeichnet, daß das kugelförmige Teil vollkommen aus harter Tonerde besteht und mit einem Schaft aus Titan oderIn the case of the prosthesis defined at the outset, the invention is characterized in that the spherical part is completely made of hard clay and with a shaft made of titanium or

derartlike that

einer Titanlegierung^verbunden ist, daß das kugelförmige Teil schaftseitig mit einem Sackloch versehen ist, auf dessen Umfang durch Löten ein Einsatz aus Titan oder einer Titanlegierung befestigt ist, mit dem seinerseits das Ende des Schaftes so verbunden ist, daß jegliche Rotation oder relative Translationsbewegung unmöglich ist.a titanium alloy ^ is connected that the spherical part on the shaft side is provided with a blind hole, on the circumference of which an insert made of titanium or a titanium alloy is soldered is attached, to which in turn the end of the shaft is connected so that any rotation or relative translational movement is impossible.

Bevorzugte Ausführungsformen der Erfindung sind in den Unteransprüchen gekennzeichnet.Preferred embodiments of the invention are in characterized the subclaims.

Nachfolgend werden unter Bezugnahme auf die beiliegenden Figuren 1 bis 4 Ausführungsbeispiele für erfindungsgemäße Oberschenkelknochentexle von Hüftgelenkprothesen näher beschrieben.In the following, with reference to the accompanying FIGS. 1 to 4, exemplary embodiments of the invention are described Femoral texles of hip joint prostheses described in more detail.

Fig. 1 zeigt ein erfindungsgemäßes Oberschenkelteil, bei dem der Schaft im Einsatz des Prothesenkopfes mit Hilfe eines "Morse"-Kegels befestigt ist.Fig. 1 shows a thigh part according to the invention, in which the shaft in use of the prosthetic head with the help a "Morse" cone is attached.

Fig. 2a stellt ein weiteres erfindungsgemäßes Oberschenkelteil dar, bei dem der Schaft im Einsatz des Prothesenkopfes mit Hilfe eines Keils und eines Seegerrings befestigt ist.2a shows a further thigh part according to the invention represents, in which the shaft is attached in use of the prosthetic head with the help of a wedge and a circlip.

6G9847/03096G9847 / 0309

Fig, 2b zeigt ©inen Schnitt entlang der Aehse A-A aus Fig. 2a.Fig, 2b shows a section along the axis A-A from Fig. 2a.

Fig. 3 zeigt ein weiteres erfindungsgemäßes Ober= schenkelteil, in dem der Schaft im Einsatz des Prothesenkopfes mit Hilfe eines Gewindes und eines Seegerrings befestigt ist*3 shows a further thigh part according to the invention, in which the shaft is in use with the prosthetic head is attached with the help of a thread and a circlip *

Fig. 4a zeigt ein weiteres erfindungsgemäßes Ober= schenkelteil, bei dem der Schaft im Einsatz des Prothesenkopfes eine Zylinderform mit kreisförmigem Querschnitt aufweist und mit Hilfe eines Stiftes blockiert ist.4a shows a further thigh part according to the invention, in which the shaft is in use of the prosthetic head has a cylindrical shape with a circular cross-section and is blocked by means of a pin.

Fig. 4b zeigt einen Schnitt entlang der Achse B-B aus Fig. 4a.Fig. 4b shows a section along the axis B-B from Fig. 4a.

In der in Fig. 1 gezeigten Vorrichtung besteht das Oberschenkelknochentexl aus einem Kopf 1 in Form einer abgeschnittenen Kugel aus gesintertem Aluminiumoxyd, das geglättet und geschlämmt ist, und aus einem Oberschenkelknochenschaft 2 aus Titan oder einer Titanlegierung, beispielsweise der Legierung TA6V, mit 6% Aluminium und 4% Vanadiuma deren Wärmeaus·= dehnuhgskoeffizient nur unwesentlich von dem des hochreinen Aluminiumoxyds des Gelenkkopfes verschieden ist.In the device shown in Fig. 1, the femur consists of a head 1 in the form of a cut ball made of sintered aluminum oxide, which is smoothed and slurry, and of a femur shaft 2 made of titanium or a titanium alloy, for example the alloy TA6V, with 6% aluminum and 4% vanadium a whose heat expansion coefficient is only insignificantly different from that of the high-purity aluminum oxide of the joint head.

Die mechanischen Eigenschaften (Bruchbelastung, Elastizitätsgrenze, Bruchdehnung, Ermüdungsgrenze) liegen erheblich über denen der bisher für die Herstellung derartiger Stäbe verwendeten Metallegierungen, beispielsweise über denen von rost·= freiem Stahl mit 18% Chrom, 8% Nickel und 2% Molybdän, oder denen der Stellitlegierung aus Kobalt, Chrom und Molybdän mit 27-30% Chrom und 5-7% Molybdän. Insbesondere liegt ihre Ermü-The mechanical properties (breaking load, elastic limit, Elongation at break, fatigue limit) are considerably higher than those previously used for the production of such rods Metal alloys, for example over those of rust · = free steel with 18% chromium, 8% nickel and 2% molybdenum, or those of the stellite alloy made of cobalt, chromium and molybdenum with 27-30% chromium and 5-7% molybdenum. In particular, their exhaustion

ο οο ο

dungsgrenze bei etwa 64.10 Zyklen gegenüber 25.10 Zyklen für rostfreiem Stahl 18-8 mit 2% Molybdän und 33.1O8 Zyklen für die erwähnte Stellitlegierungo Ihre Korrosionsbeständigkeitlimit of about 64.10 cycles compared to 25.10 cycles for stainless steel 18-8 with 2% molybdenum and 33.1O 8 cycles for the aforementioned stellite alloy o their corrosion resistance

6nqru7/mn<!6nqru7 / mn <!

-A--A-

ist gut und kann eventuell noch durch Aufspritzen von Aluminiumoxydpulver in einer Plasmaflamme verbessert werden.is good and can possibly be done by spraying on aluminum oxide powder can be improved in a plasma flame.

Der OberschenkeIschaft 2 wird mit dem Kopf 1 über einen Kragen 3 verbunden. Der Kopf 1 weist ein kege1stumpfförmiges Sackloch auf, auf dessen Wandung ein Einsatz 4 aus derselben Titanlegierung angelötet ist, aus der auch der Schaft besteht. Hierzu wird zwischen der Wandung aus Aluminiumoxyd und dem Einsatz ein Silberlot aufgetragen und dann werden die beiden Teile mit dem Silberlot in einen Vakuumofen eingeführt, mit dem hohe Temperaturen und ein Vakuum von weniger als 10 Millibar erzeugt werden. Das im Silber kaum lösliche Titan wird mit dem Aluminiumoxyd in Berührung gebracht und gelangt an die Zwischenfläche zwischen der Keramik und dem Lot, indem es mit dem Silber die benetzende Legierung bildet, die die Verbindung zwischen Aluminiumoxyd und Titan herstellt.The thigh shaft 2 is overlaid with the head 1 a collar 3 connected. The head 1 has a frustoconical shape Blind hole, on the wall of which an insert 4 made of the same titanium alloy is soldered as the shaft from consists. For this purpose, a silver solder is applied between the aluminum oxide wall and the insert and then the both parts with the silver solder placed in a vacuum furnace, with the high temperatures and a vacuum of less than 10 Millibars are generated. The titanium, which is hardly soluble in silver, is brought into contact with the aluminum oxide and arrives at it the interface between the ceramic and the solder, in that it forms the wetting alloy with the silver that makes the connection between aluminum oxide and titanium.

Anschließend wird auf dem das Sackloch umgebenden ebenen Bereich der Oberfläche des Kopfes eine Scheibe 5 aus Silber oder auch aus einem anderen Edelmetall wie beispielsweise Gold angeordnet, durch die geometrische Fehler dieser ebenen Fläche und der entsprechenden ebenen Gegenfläche der Krigenoberseite, insbesondere Planfehler,ausgeglichen werden. Anschließend wird das kegelstumpfförmige Ende 6 des Schafts im Sackloch durch Einklemmen befestigt, da der Spitzenwinkel am Ende des Schafts etwas größer als der Spitzenwinkel im Innern des Einsatzes ist.A disk 5 is then made on the flat area of the surface of the head surrounding the blind hole Silver or some other precious metal such as gold, for example, due to the geometric errors of this flat surface and the corresponding flat opposite surface of the crane top, in particular plan errors, are compensated. Then the frustoconical end 6 of the shaft is fastened in the blind hole by clamping, as the point angle at the end of the shaft is slightly larger than the point angle inside the insert.

In der in Fig. 2a gezeigten Vorrichtung weist der Kopf 1 dagegen ein zylindrisches Sackloch auf, auf dessen Wandung ein Einsatz 4 aus derselben Legierung, aus der auchIn the device shown in Fig. 2a, however, the head 1 has a cylindrical blind hole on whose Wall an insert 4 made of the same alloy from which also

609847/0309609847/0309

— S —- S -

der Schaft besteht, mit Hilfe des bereits oben beschriebenen Verfahrens befestigt ist.the shaft is attached using the method already described above.

Anschließend wird hier ebenfalls eine Süberscheibe auf der das Sackloch umgebenden ebenen Fläche des Kopfes angeordnet. Then there is also a Süberscheibe here arranged on the flat surface of the head surrounding the blind hole.

Das Ende 6 des Schaftes ist zylinderförmig ausgebildet und besitzt eine Nut 7 zur Aufnahme eines Seegerrings 8 sowie eine Vertiefung 9 (der dieser Vertiefung benachbarte Bereich ist schraffiert eingezeichnet) zur Aufnahme eines Keils 10 mit halbrundem Profil.The end 6 of the shaft is cylindrical and has a groove 7 for receiving a Seeger ring 8 and a recess 9 (the one adjacent to this recess Area is shown hatched) for receiving a wedge 10 with a semicircular profile.

Fig. 2b zeigt eine Ansicht von unten der unteren ebenen Fläche des Kopfes. Diese Fläche 11 weist eine rechteckige Vertiefung 12 auf, deren Tiefe so beschaffen ist, daß der Keil 10 eingeführt werden kann.Figure 2b shows a bottom plan view of the lower planar surface of the head. This surface 11 has a rectangular shape Well 12, the depth of which is such that the wedge 10 can be inserted.

Die Befestigung des Schafts am Kopf geschieht in der Weise, daß der Keil 10 in die Vertiefung 9 am Schaftende eingeführt wird, so daß der Keil mit dem Schaftende in das Sackloch eindringt, bis der Seegerring vor einer im Einsatz vorhandenen Nut zu liegen kommt, in die er eingesetzt wird.The shaft is attached to the head in the Way that the wedge 10 is inserted into the recess 9 at the shaft end, so that the wedge with the shaft end in the blind hole penetrates until the circlip comes to rest in front of an existing groove in which it is inserted.

In diesem Augenblick trifft die Stirnfläche 13 des Schaftendes praktisch auf den Boden des Sacklochs auf. Daraufhin blockiert der Keil das Schaftende gegen Rotation, während der Seegerring das Ende gegen Translation sichert.At this moment, the end face 13 of the end of the shaft practically hits the bottom of the blind hole. Thereupon the wedge blocks the shaft end against rotation, while the circlip locks the end against translation.

Fig. 3 zeigt eine Befestigung mit Hilfe von Verschraubung und Seegerring. Am zylindrischen Ende 6 des Schaftes ist ein Gewinde eingeschnitten, dem ein im Einsatz 4 vorhandenes Gegengewinde entspricht. Die Befestigung des Schafts am Kopf geschieht dadurch, daß sein Ende in den Einsatz eingeschraubtFig. 3 shows a fastening with the aid of a screw connection and Seeger ring. At the cylindrical end 6 of the shaft is cut a thread to which a mating thread present in the insert 4 corresponds. The attachment of the shaft to the head happens because its end is screwed into the insert

609847/0309609847/0309

wird, bis der Seegerring 8, der in einer Nut 7 angeordnet ist, in eine entsprechende im Einsatz vorhandene Nut eingreift, wobei die ebene Stirnseite 13 des Schaftendes praktisch auf den Boden des Sacklochs aufstößt.is until the Seeger ring 8, which is arranged in a groove 7, engages in a corresponding groove present in use, the flat end face 13 of the shaft end practically on pushes open the bottom of the blind hole.

Fig. 4 zeigt eine Befestigung mit Hilfe eines kreuzförmigen Stempels am Schaftende und eines Stifts. Das Schaftende weist im Querschnitt eine Kreuzform auf, die zu einer entsprechenden Kreuzform des Hohlraums des Einsatzes, wie er in Fig. 4b zu sehen ist, komplementär ist. Der Prothesenkopf und der Einsatz weisen eine Querbohrung 14 auf. Das Schaftende wird in den Einsatz so tief hineingesteckt, daß es auf den Boden des Sacklocheinsatzes aufstößt. Dann wird in die Querbohrung 14 ein Stift 15 gesteckt. Somit ist der Schaft durch die Kreuzform des Schaftendes gegen Rotation und durch den Stift gegen eine Translation geschützt.Fig. 4 shows a fastening with the aid of a cross-shaped punch at the end of the shaft and a pin. The end of the shaft has a cross-shape in cross-section which leads to a corresponding cross-shape of the cavity of the insert, as he does can be seen in Fig. 4b, is complementary. The prosthesis head and the insert have a transverse bore 14. The end of the shaft is inserted so deep into the insert that it hits the bottom of the blind hole insert. Then it is in the cross hole 14 a pin 15 is inserted. Thus, the shaft is against rotation by the cross shape of the shaft end and by the Pen protected against translation.

Im Rahmen der Erfindung können auch in das Schaftende Stifte eingesetzt werden, auf die eine Federkraft einwirkt und die in Sacklöcher im Innern des Einsatzes und des Kopfes eingreifen.In the context of the invention, pins can also be inserted into the shaft end, on which a spring force acts and which engage in blind holes in the interior of the insert and the head.

609847/0309609847/0309

Claims (1)

PATENTANSPRÜCHEPATENT CLAIMS Prothese zum Ersatz für ein Gelenk, die aus einem kugelförmigen und einem pfanneßrörmigen Teil besteht, wobei das kugelförmige Teil mit Hilfe eines Schaftes aus Metall im Knochen verankerbar ist und beide Teile wenigstens im Bereich der gegenseitigen Berührungsflächen aus hartem Aluminiumoxyd bestehen, gemäß Patent Nr. 21 34 316, dadurch gekennzeichnet, daß das kugelförmige Teil (1) vollkommen aus harter Tonerde besteht und mit einem Schaft (2) aus Titan oder einer Titanlegierung derart verbunden ist, daß das kugelförmige Teil schaftseitig mit einem Sackloch versehen ist, auf dessen Umfang durch Löten ein Einsatz (4) aus Titan oder einer Titanlegierung befestigt ist, an dem das Ende (6) des Schaftes seinerseits so befestigt ist, daß jegliche Rotation oder relative Translationsbewegung unmöglich ist,Prosthesis to replace a joint, which consists of a spherical and a socket-shaped part, wherein the spherical part with the help of a metal shaft can be anchored in the bone and both parts at least in the Area of mutual contact surfaces made of hard Alumina consist, according to Patent No. 21 34 316, characterized in that the spherical Part (1) consists entirely of hard alumina and has a shaft (2) made of titanium or a titanium alloy is connected in such a way that the spherical part is provided on the shaft side with a blind hole, on its circumference by soldering an insert (4) made of titanium or a titanium alloy is attached to which the end (6) of the shaft itself is attached is that any rotation or relative translational motion is impossible, 2 - Prothese gemäß Anspruch 1, dadurch gekennzeichnet, daß das kugelförmige Teil aus Tonerde schaftseitig eine ebene Fläche aufweist und daß der Einsatz (4) einen ebenen Stoßrand besitzt, der mit der ebenen Fläche bündig abschließt. 2 - prosthesis according to claim 1, characterized in that that the spherical part made of alumina has a flat surface on the shaft side and that the insert (4) has a has a flat butt edge that is flush with the flat surface. 3 - Prothese gemäß Anspruch 2, dadurch gekennzeichnet, daß zwischen der ebenen Fläche des kugelförmigen Teils (11 aus Aluminiumoxyd bzw. der Stoßkante des Einsatzes (4) einerseits und einer flachen Stoßkante des Schaftes andererseits einepcheibe (5) aus einem Edelmetall angeordnet ist.3 - Prosthesis according to claim 2, characterized in that between the flat surface of the spherical Part (11 made of aluminum oxide or the abutting edge of the insert (4) on the one hand and a flat abutting edge of the shaft on the other hand a disc (5) made of a noble metal is arranged. 609 8477 0 209609 8477 0 209 4 - Prothese gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zur Befestigung des Endes des Schaftes im Einsatz ein Morsekegel gehört.4 - Prosthesis according to one of Claims 1 to 3, characterized in that for fastening of the end of the shaft in use belongs to a Morse taper. 5 - Prothese gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Befestigung des Schaftendes im Einsatz ein Keil (10) dient, der in einer Vertiefung im Schaftende liegt, und ein Seegerring (9), der in einer Nut am Schaftende und in einer entsprechenden Nut im Sackloch des Einsatzes liegt.5 - Prosthesis according to one of claims 1 to 3, characterized in that the attachment a wedge (10) is used for the end of the shaft in use, which lies in a recess in the end of the shaft, and a circlip (9), which lies in a groove at the end of the shaft and in a corresponding groove in the blind hole of the insert. 6 - Prothese gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zur Befestigung des Schaftendes im Einsatz ein Gewinde am Schaftende vorgesehen ist, das in ein Gegengewinde im Einsatz (4) eingeschraubt ist.6 - Prosthesis according to one of Claims 1 to 3, characterized in that for fastening of the shaft end in the insert a thread is provided on the shaft end which is screwed into a mating thread in the insert (4). 7 - Prothese gemäß Anspruch 6, dadurch gekennzeichnet, daß der Befestigung des Schaftendes am Einsatz darüber hinaus ein Seegerring dient, der in einer Nut am Schaftende und in einer entsprechenden Nut im Sackloch des Einsatzes angeordnet ist.7 - Prosthesis according to claim 6, characterized in that that the attachment of the shaft end to the insert also serves a Seeger ring, which is in a groove on the shaft end and is arranged in a corresponding groove in the blind hole of the insert. 8 - Prothese nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Schaftende zylinderförmig ist mit einem Querschnitt, der Vorsprünge aufweist, und daß das Sacklock des kugelförmigen Teils diesem Querschnitt angepaßt ist, wobei ein Stift (15) in einer Querschnittebene die beiden Teile durchdringt und gegeneinander fixiert (Fig. 4).8 - Prosthesis according to one of claims 1 to 3, characterized in that the shaft end is cylindrical with a cross-section that has protrusions, and that the sack block of the spherical part is adapted to this cross-section, a pin (15) in a cross-sectional plane penetrates the two parts and fixed against each other (Fig. 4). 9 - Prothese gemäß Anspruch 8, dadurch gekennzeichnet, daß das Schaftende (6) und der entsprechende Hohlraum im Einsatz kreuzförmig ausgebildet sind.9 - Prosthesis according to claim 8, characterized in that that the shaft end (6) and the corresponding cavity are formed in the shape of a cross in use. χ χχ χ 609847/0309609847/0309
DE2618763A 1975-05-05 1976-04-28 Prosthesis to replace a joint Expired DE2618763C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7513951A FR2310120A2 (en) 1975-05-05 1975-05-05 Joint prosthesis with ball and socket - having aluminium oxide ball with titanium shaft coupled over metal insert

Publications (2)

Publication Number Publication Date
DE2618763A1 true DE2618763A1 (en) 1976-11-18
DE2618763C2 DE2618763C2 (en) 1985-01-24

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DE2618763A Expired DE2618763C2 (en) 1975-05-05 1976-04-28 Prosthesis to replace a joint

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FR (1) FR2310120A2 (en)

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US4227265A (en) * 1977-05-23 1980-10-14 Sulzer Brothers Limited Bone implant with plastic insert between elements of different mechanical properties
EP0017743A1 (en) * 1979-03-08 1980-10-29 Metallwerk Plansee Gesellschaft M.B.H. Joint prosthesis
US5015257A (en) * 1989-03-20 1991-05-14 Zimmer, Inc. Prosthetic interpositional device/coupler
US5156624A (en) * 1991-09-06 1992-10-20 Zimmer, Inc. Head adaptor for hip prosthesis
US5362311A (en) * 1990-01-05 1994-11-08 Kyocera Corporation Artificial hip joint
US5405403A (en) * 1994-03-18 1995-04-11 Mikhail; W. E. Michael Femoral prosthesis with anti-rotation feature for ball
US5413610A (en) * 1986-12-25 1995-05-09 Kyocera Corporation Artificial hip joint
WO2011005126A1 (en) 2009-07-06 2011-01-13 Leszek Olbrzymek A joint endoprosthesis

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FR2510395B2 (en) * 1978-06-29 1987-05-29 Ceraver TITANIUM ROD OR TITANIUM ALLOY FOR CEMENT-FREE FIXING IN A LONG BONE FOR PROSTHESIS
FR2438470A1 (en) * 1978-10-12 1980-05-09 Rambert Andre HIP PROSTHESIS
EP0011665A1 (en) * 1978-11-23 1980-06-11 Osteo Ag Set for endoprosthesis and process for adjusting the length of the neck of this endoprosthesis
EP0071242B1 (en) * 1981-07-30 1986-12-03 CERAVER Société anonyme dite: Prosthetic stem composed of titanium or its alloys for the cementless fixation in a long bone
FR2580170B1 (en) * 1985-04-12 1987-11-27 Meta Ceram FEMALE HEAD FOR HIP PROSTHESIS
FR2582934B1 (en) * 1985-06-10 1989-07-07 Moulin Jacques TOTAL HIP PROSTHESIS WITH LONG-TERM ACTION PROHIBITING ALL LUXATION
US4822369A (en) * 1986-06-10 1989-04-18 Gerard Oueveau Bone joint prosthesis
FR2631544B1 (en) * 1988-05-20 1990-09-07 Cuilleron J ASSEMBLY DEVICE BETWEEN A ELEMENT OF CERAMIC MATERIAL AND A METAL ELEMENT, IN PARTICULAR FOR JOINT PROSTHESES
CH676922A5 (en) * 1989-02-16 1991-03-28 Sulzer Ag Hip joint prosthesis with ceramic and metal plates - has metal bush fitted in ceramic ball end to receive tapered end of femur sem
US5080679A (en) * 1990-01-29 1992-01-14 Techmedica, Inc. Orthopedic junction for dissimilar materials
EP0562782A3 (en) * 1992-03-24 1994-05-25 Smith & Nephew Richards Inc Dual composition coupler for modular medical implants
FR2744627B1 (en) * 1996-02-09 1998-05-15 Bouvet Jean Claude PROSTHESIS FOR RESTORING A JOINT BETWEEN TWO BONES FINDING AN ADVANTAGEOUS APPLICATION AS A HIP PROSTHESIS AND INTERVERTEBRAL PROSTHESIS
ATE216863T1 (en) * 1996-02-29 2002-05-15 Werner Scholz ENDOPROSTHESIS FOR AN ARTIFICIAL HIP JOINT
FR2763835A1 (en) * 1997-05-30 1998-12-04 Michel Lahille Carpometacarpal implant
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4227265A (en) * 1977-05-23 1980-10-14 Sulzer Brothers Limited Bone implant with plastic insert between elements of different mechanical properties
EP0017743A1 (en) * 1979-03-08 1980-10-29 Metallwerk Plansee Gesellschaft M.B.H. Joint prosthesis
US5413610A (en) * 1986-12-25 1995-05-09 Kyocera Corporation Artificial hip joint
US5015257A (en) * 1989-03-20 1991-05-14 Zimmer, Inc. Prosthetic interpositional device/coupler
US5362311A (en) * 1990-01-05 1994-11-08 Kyocera Corporation Artificial hip joint
US5156624A (en) * 1991-09-06 1992-10-20 Zimmer, Inc. Head adaptor for hip prosthesis
US5405403A (en) * 1994-03-18 1995-04-11 Mikhail; W. E. Michael Femoral prosthesis with anti-rotation feature for ball
WO2011005126A1 (en) 2009-07-06 2011-01-13 Leszek Olbrzymek A joint endoprosthesis

Also Published As

Publication number Publication date
FR2310120A2 (en) 1976-12-03
DE2618763C2 (en) 1985-01-24
FR2310120B2 (en) 1977-11-18

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