EP0183809A1 - Hüftschaft-implantat - Google Patents

Hüftschaft-implantat

Info

Publication number
EP0183809A1
EP0183809A1 EP85902962A EP85902962A EP0183809A1 EP 0183809 A1 EP0183809 A1 EP 0183809A1 EP 85902962 A EP85902962 A EP 85902962A EP 85902962 A EP85902962 A EP 85902962A EP 0183809 A1 EP0183809 A1 EP 0183809A1
Authority
EP
European Patent Office
Prior art keywords
shaft
hip
implant according
head
fitting piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85902962A
Other languages
German (de)
English (en)
French (fr)
Inventor
Harry Prof. Dr. Med. Buse
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0183809A1 publication Critical patent/EP0183809A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30721—Accessories
    • A61F2/30724—Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving 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
    • A61F2/32—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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3676—Distal or diaphyseal parts of 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
    • A61F2/30767—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
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of 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
    • A61F2/3672—Intermediate parts of 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30125—Rounded shapes, e.g. with rounded corners elliptical or oval
    • 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
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30153—Convex polygonal shapes rectangular
    • 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
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
    • A61F2002/30571—Leaf springs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30579—Special structural features of bone or joint prostheses not otherwise provided for with mechanically expandable devices, e.g. 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • 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
    • A61F2/32—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
    • 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
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    • 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
    • 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
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2230/0017—Angular shapes
    • A61F2230/0019—Angular shapes rectangular
    • 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
    • A61F2310/00017—Iron- or Fe-based alloys, e.g. stainless steel

Definitions

  • the invention relates to a hip stem implant according to the preamble of patent claim 1.
  • Cementless implantable hip shaft implants which have a surface profile so that the bone grows on the implant and is anchored in the surface profile, and / or which are more or less adapted to the bone marrow cavity.
  • the surface profiling which is intended to promote connective tissue-free growth of the bone on the implant, is designed differently. Either a regular moderate honeycomb-like pattern or regular or irregular surface profiling, a so-called Madreborian profiling. In the known hip stem implants, this surface profile extends over the entire length of the stem. However, the bone can only grow in the cancellous upper bone bed.
  • Round prosthesis cross sections that lie in the round bone cross section of the medullary cavity have the disadvantage that the prostheses are not rotationally stable.
  • the growth of the bone can be disturbed by certain frequently and regularly recurring stress situations such as sitting down, getting up from the sitting position or bending the knees while standing.
  • the implants must therefore not be loaded immediately.
  • the implant can be loosened later due to the lack of rotational stability.
  • the implant In the upper region of the implant, because of the adapted, that is to say mostly round, cross section, the implant generates high circumferential tensions in the bone mantle which, according to experience, is not able to cope with it. This often leads to Admission of the prosthesis to peripheral tension fractures during the operation.
  • the invention has for its object to provide a cementless implantable hip stem implant which ensures a firm fit without later loosening and enables immediate loading.
  • the hip stem implant is a two-part composite component.
  • the head-side part of the shaft with a profiled surface has a non-circular, elongated cross section.
  • This cross section has two mutually perpendicular main axes.
  • the main axes have different lengths. This gives - - -
  • the cross-sectional area of the head-side part of the shaft has an elongated shape.
  • This elongated shape of the cross section achieves the previously unattainable rotational stability of the implant in the bone.
  • the shape of the cross-sectional area is optimally adapted to the more or less non-circular cross-section of the shaft jacket of the femur.
  • the head-side part of the shaft with a profiled surface and an elongated cross section has such a length that it only extends into the area in which a cancellous bone is present. This cancellous bone section enables the bone to grow with an anchoring in the profiled surface of this head-side part of the shaft.
  • the at least partially elastically and / or plastically deformable fitting seat piece facilitates the insertion of this hip shaft implant into the inside of the bone by self-centering and ensures a form-fitting fit.
  • This form-fitting fit in the implanted state means that loads are created that generate a moment on the implant. The reliable prevention of the movements that can be caused by this moment is extremely important.
  • the surface of the fitting seat piece is not profiled, since there is no growth of the bone at the point at which the fitting seat piece sits after the implantation.
  • the rotational stability of the implant is achieved in particular in that the cross-sectional area of the head-side part of the shaft is oval, elliptical or rectangular. As a result, circumferential stress fractures of the bone are also avoided.
  • the fitting seat piece creates the form-fitting seat in the lower cortical area of the implant, in which the bone does not grow.
  • the round cross section of the fitting piece can be optimally adapted to the round cross-sectional shape of this bone section.
  • the plastic or elastic deformability of the fitting seat piece which is embedded in this area, prevents harmful relative movement between the bone and the implant. Since the femur has a curvature in the cortical shaft area, the at least partially elastically and / or plastically deformable shaped fitting also enables the implant to be adapted to the cortical bone bearing of the medullary cavity. This is not completely possible with the previously known implants.
  • the cross-sectional dimensions of the femur and the medullary cavity differ. This is optimally compensated for by the at least partially elastic and / or plastic deformability of the fitting seat piece.
  • the structural shape and / or the material of the fitting seat piece can be specially designed and / or selected with particular advantage.
  • the person skilled in the art has the possibility of carrying out the training and the selection of materials in such a way that in the case of compression, in particular in the case of an increase in the fitting seat piece, the stiffness thereof increases. After a secure fit, the absorption of moments generating forces can be improved.
  • the inner diameter of the femur can vary, for example, between 8 and 18 mm.
  • the head-side part of the shaft and the fitting seat piece can advantageously be produced separately.
  • the two parts can be connected to one another in a detachable manner. For example, only two unit sizes are required for the head-side part of the shaft. Only the elastically and / or plastically deformable fitting seat piece is produced in different sizes and kept in stock.
  • the head-side part of the shaft and the fitting seat piece are combined by means of a screw connection to form a structural unit. This assembly of the parts can take place during the operation before the implant is inserted.
  • the head-side part of the shaft with surface profiling can consist of metal, such as steel, in a manner known per se.
  • the fitting piece can be made of either metal or plastic. To eliminate the risk of corrosion or voltage breaks at the connection point with the metallic head-side part of the shaft is to be preferred over metal plastic, in particular high-pressure-resistant, low-molecular polyethylene.
  • this can be a metal cylinder with an at least partially elastically deformable wall.
  • This at least partially deformable wall of the metal cylinder can be at least partially slotted starting from the outer edge.
  • the number and width of the slots determine the elastic behavior of this cylinder.
  • the design can be such, for example, that the wall of the cylinder consists, at least in a partial area, of tongue sections which can be spaced apart in the circumferential direction.
  • the constructive design features of the composite shaft implant according to the invention result in a combined overall effect.
  • the body load is transferred to the bone through the collar on the neck part and the prosthesis is prevented from sinking by resting on the thigh bone freed from the femoral head and neck.
  • the lower fitting seat piece ensures that moment loads are safely absorbed, while the plastic or elastic deformability of the lower fitting piece prevents harmful relative movements between the implant and the load-dependent elastically deformable bone.
  • twisting of the implant is safely eliminated.
  • the implant can be implanted without problems and can be inserted into the bone be loaded immediately without disturbing the growth of the bone on the implant and is not at risk of loosening later.
  • FIG. 1 shows a sectional view of an embodiment of a hip shaft implant inserted into the thigh bone
  • FIG. 2 is a sectional view taken along line II-II of FIG. 1
  • Fig. 1 the cancellous, non-deformable and b the load-dependent, elastically deformable, cortical bone area is identified.
  • the hip shaft implant has a head 1 which can be plugged on and which can be made of metal or a ceramic material.
  • the metal-side part 4 of the shaft 4 > 5 has a neck 2 with a collar 3.
  • the head-side part 4 of the shaft 4, 5 is equipped in a manner known per se with an upper surface profile.
  • On these head-side portion 4 of the shaft 4 »5 is in the illustrated example by means of theticians ⁇ shown at 8 .
  • the fit piece 5 shown is a cylindrical component.
  • the fitting piece 5 is arranged in the area (zone b) of the non-cancellous, round (cortical) medullary cavity. This fitting piece 5 has a round cross section.
  • slots 9 are provided in the casing in the illustrated embodiment, which extend from the free end. Elastically deformable tongues remain between these slots 9.
  • the head-side part 4 of the shaft 4-, 5 has an elongated, in this case rectangular cross section. It can be seen that this cross section has two mutually perpendicular main axes, the lengths of which are different. This training certainly prevents twisting.

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)
EP85902962A 1984-06-07 1985-06-07 Hüftschaft-implantat Withdrawn EP0183809A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3421145 1984-06-07
DE3421145 1984-06-07
DE3426947 1984-07-21
DE3426947A DE3426947C2 (de) 1984-06-07 1984-07-21 Oberschenkelteil einer Hüftgelenk-Endoprothese

Publications (1)

Publication Number Publication Date
EP0183809A1 true EP0183809A1 (de) 1986-06-11

Family

ID=25821910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85902962A Withdrawn EP0183809A1 (de) 1984-06-07 1985-06-07 Hüftschaft-implantat

Country Status (7)

Country Link
EP (1) EP0183809A1 (da)
AU (1) AU4493085A (da)
BR (1) BR8506770A (da)
DE (1) DE3426947C2 (da)
DK (1) DK56486A (da)
HU (1) HUT59812A (da)
WO (1) WO1986000011A1 (da)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599245B1 (fr) * 1986-05-28 1990-12-21 Dambreville Alain Prothese d'extremite superieure du femur a appui metaphysaire.
DE3627097A1 (de) * 1986-08-09 1988-02-18 S & G Implants Gmbh Stiel fuer gelenk-endoprothesen
DE3701198A1 (de) * 1987-01-15 1988-07-28 Buse Harry Hueftschaft-implantat
DE3722853A1 (de) * 1987-07-10 1989-01-19 Kernforschungsz Karlsruhe Endoprothese fuer ein femurhueftgelenk
DE8805583U1 (de) * 1988-04-27 1989-09-07 Espe Stiftung & Co Produktions- und Vertriebs KG, 82229 Seefeld Prothesenschaft
DE3822854A1 (de) * 1988-07-06 1990-01-11 Roland Man Druckmasch Gelenkprothese fuer ein hueftgelenk
US5108452A (en) * 1989-02-08 1992-04-28 Smith & Nephew Richards Inc. Modular hip prosthesis
FR2683992B1 (fr) * 1991-11-25 1994-02-11 Guy Boucher Obturateur intramedullaire bioresorbable semi-rigide a ailettes.
DE4440082A1 (de) * 1994-11-10 1996-05-15 Ilmenauer Implantate Manufaktu Hüftgelenkprothese
IT1290643B1 (it) * 1997-01-17 1998-12-10 Stefano Orsi Terminale distale per stelo di protesi primaria dell'anca.
US6554865B2 (en) 2001-04-19 2003-04-29 Wright Medical Technology, Inc. Humeral stem with distal tri-slot
JP4095003B2 (ja) * 2003-09-12 2008-06-04 泉工医科工業株式会社 人工関節用中遠位チップ
DE102013219656A1 (de) * 2013-09-27 2015-04-02 Heraeus Medical Gmbh Modulares Gelenkspacer-System

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8212689U1 (de) * 1982-08-12 Howmedica International, Inc. Zweigniederlassung Kiel, 2300 Kiel Hüftgelenkendoprothese
GB1409053A (en) * 1971-09-24 1975-10-08 Nat Res Dev Orthopaedic prosthetic devices
DE2247721A1 (de) * 1972-09-28 1974-04-04 Hoffmann Daimler Siegfried Dr Gelenkprothese
US3965490A (en) * 1974-11-14 1976-06-29 Howmedica, Inc. Femoral insert for hip joint prosthesis
US3996625A (en) * 1975-02-28 1976-12-14 United States Surgical Corporation Artificial hip joint with novel stem
DE2636644A1 (de) * 1976-08-13 1978-02-16 Maschf Augsburg Nuernberg Ag Endoprothese fuer gelenke des menschlichen bewegungsapparates
SE7710780L (sv) * 1977-02-14 1978-08-15 Richards Mfg Co Hoftledsprotes
DE2734249A1 (de) * 1977-07-29 1979-02-08 Bayer Ag Oberschenkelhalsprothese
DD236853A3 (de) * 1978-03-17 1986-06-25 Med Akad Vollstaendige hueft-gelenk-endoprothese
FR2425237A1 (fr) * 1978-05-09 1979-12-07 Breard Francis Prothese de hanche a tige flexible
FR2483218B1 (fr) * 1980-05-30 1986-06-27 Cuilleron J Tige femorale pour prothese de hanche
DE3027832A1 (de) * 1980-07-23 1982-03-04 Sigri Elektrographit Gmbh, 8901 Meitingen Hueftendoprothese
US4404692A (en) * 1981-09-14 1983-09-20 Eftekhar Nas S Centering system for hip replacement
CH655650B (da) * 1982-02-23 1986-05-15
US4406023A (en) * 1982-04-19 1983-09-27 Harris William H Stemmed femoral component for the human hip
DE3314210C2 (de) * 1982-06-24 1984-09-06 Gebrüder Sulzer AG, Winterthur Markraum-Zementsperre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8600011A1 *

Also Published As

Publication number Publication date
DE3426947C2 (de) 1986-10-16
WO1986000011A1 (fr) 1986-01-03
HUT59812A (en) 1992-07-28
AU4493085A (en) 1986-01-10
DK56486D0 (da) 1986-02-05
DE3426947A1 (de) 1985-12-12
BR8506770A (pt) 1986-09-23
DK56486A (da) 1986-02-05

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