WO1997036558A1 - Shaft prosthesis part and material kit for use therewith - Google Patents

Shaft prosthesis part and material kit for use therewith Download PDF

Info

Publication number
WO1997036558A1
WO1997036558A1 PCT/EP1997/001646 EP9701646W WO9736558A1 WO 1997036558 A1 WO1997036558 A1 WO 1997036558A1 EP 9701646 W EP9701646 W EP 9701646W WO 9736558 A1 WO9736558 A1 WO 9736558A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
cement
prosthesis part
prosthesis
part according
Prior art date
Application number
PCT/EP1997/001646
Other languages
German (de)
French (fr)
Inventor
Franz Copf
Srecko Herman
Wolfgang KÜSSWETTER
Original Assignee
Franz Copf
Srecko Herman
Kuesswetter Wolfgang
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 Franz Copf, Srecko Herman, Kuesswetter Wolfgang filed Critical Franz Copf
Priority to EP97918096A priority Critical patent/EP0891168A1/en
Publication of WO1997036558A1 publication Critical patent/WO1997036558A1/en

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
    • 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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7097—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants
    • A61B17/7098—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants wherein the implant is permeable or has openings, e.g. fenestrated screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8808—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it with sealing collar for bone cavity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8822—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8827—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it with filtering, degassing, venting or pressure relief means
    • 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
    • A61F2/30723—Plugs or restrictors for sealing a cement-receiving space
    • 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
    • A61F2/30739—Devices connected to the proximal part of an endoprosthetic femoral shaft for reinforcing or replacing the trochanters, e.g. the greater trochanter
    • 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
    • A61F2/367—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
    • A61F2/3676—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
    • 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
    • A61F2002/30004—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
    • A61F2002/30041—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis differing in hardening time
    • 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
    • A61F2002/30113—Rounded shapes, e.g. with rounded corners circular
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30205—Three-dimensional shapes conical
    • A61F2002/3021—Three-dimensional shapes conical frustoconical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30273—Three-dimensional shapes pyramidal
    • A61F2002/30276—Three-dimensional shapes pyramidal frustopyramidal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30289—Three-dimensional shapes helically-coiled
    • 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
    • A61F2002/30535—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
    • A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/30708—Means for distinguishing between left-sided and right-sided devices, Sets comprising both left-sided and right-sided prosthetic parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/3079—Stepped or enlarged apertures, e.g. having discrete diameter changes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—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
    • 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
    • A61F2002/3678—Geometrical features
    • A61F2002/368—Geometrical features with lateral apertures, bores, holes or openings, e.g. for reducing the mass, for receiving fixation screws or for communicating with the inside of a hollow shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2002/3678—Geometrical features
    • A61F2002/3694—Geometrical features with longitudinal bores
    • 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
    • A61F2002/3678—Geometrical features
    • A61F2002/3698—Geometrical features twisted about the longitudinal axis of the shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4685—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor by means of vacuum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0006—Rounded shapes, e.g. with rounded corners circular
    • 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
    • A61F2230/0017—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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0067—Three-dimensional shapes conical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0086—Pyramidal, tetrahedral, or wedge-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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0091—Three-dimensional shapes helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0084—Means for distinguishing between left-sided and right-sided devices; Sets comprising both left-sided and right-sided prosthetic parts
    • 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
    • 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

Definitions

  • the invention relates to a red tooth part according to the preamble of claim 1, and to a material kit that can be used when cementing such a.
  • Shaft prostheses with such prosthesis parts are used in particular in the case of artificial hip joints to replace the
  • a recess is created in the bone to be provided with the prosthesis, which is slightly larger than the shaft section of the prosthesis.
  • the recess created in the bone is then filled with a biocompatible cement, and when the shaft section is inserted into the recess, the liquid cement is increasingly displaced and the cement level rises in the bone recess towards its open end. If more viscous cement is used, it can also be applied to the outer surface of the shaft section and introduced into the bone recess together with the shaft section.
  • a low-viscosity cement has the advantage that it can better adapt to the microstructure of the surface of the bone recess, which is advantageous in terms of firm, reliable anchoring of the prosthesis to the bone.
  • liquid cements are difficult to insert in situ in the bone recess, since the bone is generally essentially horizontal when the patient is lying down.
  • the present invention is therefore intended to provide a stem prosthesis according to the preamble of claim 1.
  • CONFIRMATION COPY be formed that the space obtained after insertion of the prosthesis between the outer surface of the shaft section and the inner surface of the bone recess can be reliably forcibly filled with liquid cement.
  • the shaft prosthesis in addition to the shaft section and the pin section, there is a plate section which covers the open end of the bone which is to be provided with the prosthesis.
  • a bore is provided in the shaft section itself, through which cement can be guided into the vicinity of the deepest point of the bone recess.
  • the space to be filled with cement can be vented or connected to a vacuum source via the further bore provided in the plate section. In this way, the liquid cement can completely fill the above-mentioned space without trapping air bubbles.
  • the cross-sectional shape of the stem portion ensures that even with a snug fit of the stem portion into the essentially oval or round cross-sectional end portion of the bone, larger local areas of the space to be filled with cement remain, over which the cement then enters of the bone recess in the longitudinal direction.
  • a stem prosthesis according to claim 3 is well adapted to the rough course of the volume of a femur filled with cancellous bone.
  • the plate section covers the corticalis of the bone to be provided with the prosthesis at the free opening obtained by resection.
  • a larger part of the greater trochander can remain on the bone in a hip joint prosthesis.
  • the distribution of the cement released through the first bore takes place in a substantially uniform manner (with respect to the axis of the stem portion) in the circumferential direction.
  • the development of the invention according to claim 8 is also advantageous with regard to the high mechanical strength of the lower part of the shaft section.
  • the development of the invention according to claim 9 it is achieved that the lower end of the shaft section is automatically centered when inserted into the bone recess. In this way it is ensured that the intermediate space to be filled with cement has essentially the same thickness in the circumferential direction, so that the cement flows uniformly into the various partial areas of the intermediate space.
  • a prosthesis according to claim 11 can optionally be used with or without a centering part. Centering parts with different basic dimensions can also be easily put on according to the respective needs.
  • FIG. 1 shows a longitudinal section through the end of a thigh bone on the hip joint side with an inserted stem prosthesis part, shown at a point in time when the cement was only partially filled;
  • FIG. 2 a top view of the upper side of the prosthesis part according to FIG. 1;
  • FIG. 3 a top view of the underside of the prosthesis part according to FIG. 1; and Figure 4: a similar view as Figure 1, but in which a modified stem prosthesis part is shown.
  • the upper end of a thigh bone is shown at 10 in FIG. From this the joint head is sawn off along a line which is initially essentially transverse (horizontal) to the bone axis and which rises towards the greater trochander. The free edge of the corticalis thus obtained is designated by 14.
  • a recess 16 has been created in the femur 10 by removing the cancellous bone.
  • a prosthetic part 18 cast from a biocompatible metal or a biocompatible alloy is shown in the interior of the bone thus prepared. It comprises a shaft section 20 which, roughly speaking, has the shape of a twisted pyramid frustum having a right-angled cross section, which increasingly becomes a circular cross section towards the small end.
  • a plate section 22 is located at the upper end of the shaft section 20.
  • the upper bone end is prepared according to its edge contour.
  • the plate section 22 has a main section 24 which drops under operating conditions at a small angle of approximately 5-10 to the bone axis and a side section 26 which rises at an angle of approximately 60 obliquely to the greater trochander from a point adjacent to the shaft axis or bone axis.
  • the plate section stands 22 so far over the upper end of the shaft section 20 in the radial direction that it closes the edge 14 of the femur 10 created by the bone preparation in a cover-like manner.
  • a pin section 28 is formed on the plate section 22 and is inclined inwards and upwards at an angle of approximately 40-70 °, in the normal case of approximately 60 to the plane of the main section 24.
  • a through bore 32 is provided in the shaft section 20, which extends from the lower end face of the shaft section 20 through the latter and the plate section 22 and opens out on the upper side of the plate section 22.
  • a second through hole 34 is provided in a region on the edge, which leads there from the upper side of the plate section 22 to its underside.
  • the through hole 34 is aligned in the direction perpendicular to the drawing plane of FIG. 1 essentially with the base point of the axis of the pin section 28.
  • the through hole 34 lies at the highest point of the Intermediate space 36 which lies between the outer surface of the shaft section 20 and the inner surface of the recess 16.
  • the upper end of the through bore 32 is connected via a line 38 to a dispenser 40 for this liquid cement, as shown schematically in FIG.
  • the second through hole 34 is via a line 42 is connected to a vacuum source, shown as blower 44.
  • the lower shaft end is provided with a cylindrical bearing surface 46 provided, on which a centering part 48 is seated.
  • the latter has a hub section 50 and a large number of convex spring fingers 52 which are molded onto the hub section 50.
  • the centering part 48 can be a part molded from a biocompatible plastic or a part made from a biocompatible
  • the centering part 48 can also be formed in one piece with the shaft section 20 and the remaining prosthesis parts and, like the other sections of the prosthesis, can be made from a biocompatible metal or a biocompatible alloy or a biocompatible ceramic material.
  • the prosthesis part described above can be fixed as follows in the previously prepared bone end as described above:
  • a plug 54 is produced from the resected section of the femur, the diameter of which corresponds essentially to the cross section of the recess 16 at the deepest end. This plug is pressed against the lower end of the recess 16 using a suitable tool. Now the lines 38 and 42 are connected to the holes 32 and 34. A thicker (in practice about 1-2 mm thick) layer of a cement mass is applied to the edge of the underside of the plate section 22, the basic components of which correspond to the bio-compatible cement which is contained in the dispenser 40. However, the cement paste contains fillers or other additives which increase the viscosity, so that the cement paste acquires a pulpy consistency similar to that of a sealant.
  • the prosthesis part 18 is now pressed into the recess 16, the lower end of the shaft section 20 being guided and centered by the centering part 48. This axial advancement of the prosthesis part 18 comes to an end when the underside of the plate section 22 reaches the edge 14 of the open bone end.
  • the cement mass is partially displaced inwards and outwards, as indicated at 60 and 64, from the joint between the plate section and 22, where the resection line follows the edge contour of the plate section 22 well. At other points where the edge 14 could not be worked exactly on the edge contour of the plate section 22, the cement mass forms a sealing joint, as indicated at 62.
  • the cement paste 64 which has leaked outwards over the outer surface of the plate section 22 and the femur 10, is removed with a scraper.
  • the intermediate space 36 lying between the inner surface of the recess 16 and the outer surface of the shaft section 20 and the underside of the plate section 22 is tightly closed.
  • the intermediate space 36 is now subjected to negative pressure and at the same time the stamp of the dispenser 40 is moved.
  • the space 36 increasingly fills with the liquid Cement, the last section of the space filled with cement lying in front of the through hole 34, so that the space 36 as a whole is filled completely and without bubbles.
  • the surgeon can make even smaller positional corrections on the prosthesis part 18.
  • the sealing joint 62 also hardens.
  • the plug 54 when filling the intermediate space 36 with liquid cement, prevented a larger closed cement volume from accumulating below the prosthesis part 18.
  • the latter would be disadvantageous with regard to any necessary removal of the prosthesis part and its replacement by another prosthesis part.
  • the prosthesis part shown in the drawing is intended for use with a joint prosthesis for the right hip. It goes without saying that a prosthesis part for the left hip has a shape which is substantially symmetrical with the prosthesis part shown, the second through bore 34 in particular lying again at the upper edge of the plate section 22, so that it also overlies it last amounts of air can be withdrawn from the space 36.
  • the first through bore 32 is a stepped bore with a diameter decreasing towards the lower end of the shaft section 20. This way the bottom end of the shaft section 20 compared to the embodiment according to FIGS. 1-3 greater wall thickness and thus greater mechanical strength.
  • radial branch bores 66 are provided in the wall of the shaft section 20 distributed over its length and open out into the outer surface of the shaft section 20. These second bores 66 are distributed in such a way that they do not cause any significant local weakening of the shaft section 20. This can be ensured, for example, by arranging the branch bores 66 along one or more spiral lines 68.
  • the line 38 is preferably a flexible hose which, like the dispenser 40, is a disposable part.
  • a truncated cone-shaped coupling piece 70 is provided, by means of which an easily producible and easily releasable connection to the free end of the through bore 32 can be established.
  • the coupling piece 70 is frictionally seated in the correspondingly gated end portion 72 of the bore 32.
  • it is made of a plastic material to which the cement adheres only poorly.

Abstract

The invention concerns a part (18) for a prosthesis to be cemented in place, said part having a plate section (22) which projects radially over a shaft section (20) and carries a post section (28) to be provided with a joint element (30). A first through-bore (32) extends through the shaft section (20) to the top of the plate section (22). A further through-bore (34) is provided in the edge of the plate section (22) projecting over the shaft section (20). In this way, when the prosthesis part is cemented in place, an intermediate space (36) between the cavity (16) in the bone and the shaft section (20) can be forcibly filled with cement compound (56) via the first through-bore (32) whilst a vacuum is realized in this intermediate space (36) via the second through-bore (34).

Description

Prothesenteil für eine Schaftprothese und Materialkit zur Verwendung mit einem solchenProsthesis part for a stem prosthesis and material kit for use with such
Die Erfindung betrifft ein Rrothesenteil gemäß dem Ober¬ begriff des Anspruches 1, sowie ein beim Einzementieren einer solchen verwendbares Materialkit.The invention relates to a red tooth part according to the preamble of claim 1, and to a material kit that can be used when cementing such a.
Schaftprothesen mit solchen Prothesenteilen werden insbe- sondere bei künstlichen Hüftgelenken zum Ersetzen derShaft prostheses with such prosthesis parts are used in particular in the case of artificial hip joints to replace the
Gelenkkugel des Oberschenkelknochens verwendet . Zu ihrer Implantation wird in dem mit der Prothese zu versehenden Knochen eine Ausnehmung erzeugt, die etwas größer ist als der Schaftabschnitt der Prothese. Die im Knochen erzeugte Ausnehmung wird dann mit einem biokompatiblen Zement gefüllt, und beim Einsetzen des Schaftabschnittes in die Ausnehmung wird der flüssige Zement zunehmend ver¬ drängt und der Zementspiegel steigt in der Knochenaus- nehmung zu deren offenem Ende hin. Bei Verwendung höher viskosen Zementes kann man diesen auch auf die Außen¬ fläche des Schaftabschnittes aufbringen und zusammen mit dem Schaftabschnitt in die Knochenausnehmung ein¬ führen.Joint ball of the femur used. For their implantation, a recess is created in the bone to be provided with the prosthesis, which is slightly larger than the shaft section of the prosthesis. The recess created in the bone is then filled with a biocompatible cement, and when the shaft section is inserted into the recess, the liquid cement is increasingly displaced and the cement level rises in the bone recess towards its open end. If more viscous cement is used, it can also be applied to the outer surface of the shaft section and introduced into the bone recess together with the shaft section.
Ein dünnflüssiger Zement hat den Vorteil, daß er sich der MikroStruktur der Oberfläche der Knochenausnehmung besser anpassen kann, was im Hinblick auf eine feste zuverlässige Verankerung der Prothese am Knochen von Vorteil ist. Flüssige Zemente sind aber in die Knochen- ausnehmung in situ schlecht einbringbar, da der Knochen beim liegenden Patienten in der Regel im wesentlichen horizontal ausgerichtet ist.A low-viscosity cement has the advantage that it can better adapt to the microstructure of the surface of the bone recess, which is advantageous in terms of firm, reliable anchoring of the prosthesis to the bone. However, liquid cements are difficult to insert in situ in the bone recess, since the bone is generally essentially horizontal when the patient is lying down.
Durch die vorliegende Erfindung soll daher eine Schaft- prothese gemäß dem Oberbegriff des Anspruches 1 so wei-The present invention is therefore intended to provide a stem prosthesis according to the preamble of claim 1.
BESTATIGUNGSKOPIE tergebildet werden, daß der nach Einsetzen der Prothese erhaltene Zwischenraum zwischen Außenfläche des Schaft- abschnittes und Innenfläche der Knochenausnehmung zuver¬ lässig zwangsweise mit flüssigem Zement gefüllt werden kann.CONFIRMATION COPY be formed that the space obtained after insertion of the prosthesis between the outer surface of the shaft section and the inner surface of the bone recess can be reliably forcibly filled with liquid cement.
Diese Aufgabe ist erfindungsgemäß gelöst durch eine Schaftprothese mit den im Anspruch 1 angegebenen Merk¬ malen.This object is achieved according to the invention by a socket prosthesis with the features specified in claim 1.
Bei der erfindungsgemäßen Schaftprothese hat man nebem dem Schaftabschnitt und dem Zapfenabschnitt einen Plat¬ tenabschnitt, welcher das offene Ende des Knochens, der mit der Prothese versehen werden soll, überdeckt. Im Schaftabschnitt selbst ist eine Bohrung vorgesehen, durch welche Zement bis in die Nachbarschaft der tief¬ sten Stelle der Knochenausnehmung geführt werden kann. Über die im Plattenabschnitt vorgesehene weitere Bohrung ist der mit Zement zu füllende Raum entlüftbar oder mit einer Unterdruckquelle verbindbar. Auf diese Weise kann der flüssige Zement den genannten Zwischenraum vollständig ausfüllen, ohne daß Luftblasen eingeschlossen werden.In the shaft prosthesis according to the invention, in addition to the shaft section and the pin section, there is a plate section which covers the open end of the bone which is to be provided with the prosthesis. A bore is provided in the shaft section itself, through which cement can be guided into the vicinity of the deepest point of the bone recess. The space to be filled with cement can be vented or connected to a vacuum source via the further bore provided in the plate section. In this way, the liquid cement can completely fill the above-mentioned space without trapping air bubbles.
Vorteilhafte Weiterbildungen der Erfindung sind in Unter¬ ansprüchen angegeben.Advantageous developments of the invention are specified in the subclaims.
Bei einer Schaftprothese gemäß Anspruch 2 ist durch die Querschnittsform des Schaftabschnittes gewährleistet, daß auch bei sattem Einpassen des Schaftabschnittes in den im wesentlichen ovalen oder runden Querschnitt aufweisenden Endabschnitt des Knochens größere lokale Bereiche des mit Zement zu füllenden Zwischenraumes verbleiben, über welche der Zement dann in der Knochen- ausnehmung in longitudinaler Richtung fHessen kann. Eine Schaftprothese gemäß Anspruch 3 ist dem groben Verlauf des mit Spongiosa erfüllten Volumens eines Ober¬ schenkelknochens gut angepaßt.In a stem prosthesis according to claim 2, the cross-sectional shape of the stem portion ensures that even with a snug fit of the stem portion into the essentially oval or round cross-sectional end portion of the bone, larger local areas of the space to be filled with cement remain, over which the cement then enters of the bone recess in the longitudinal direction. A stem prosthesis according to claim 3 is well adapted to the rough course of the volume of a femur filled with cancellous bone.
Bei einer Schaftprothese gemäß Anspruch 4 ist gewähr¬ leistet, daß der Plattenabschnitt die Corticalis des mit der Prothese zu versehenden Knochens an der durch Resektion erhaltenen freien Öffnung überdeckt.In the case of a stem prosthesis according to claim 4, it is ensured that the plate section covers the corticalis of the bone to be provided with the prosthesis at the free opening obtained by resection.
Bildet man den Plattenabschnitt der Prothese gemäß An¬ spruch 5 aus, so kann bei einer Hüftgelenksprothese ein größerer Teil des Trochander major am Knochen ver¬ bleiben.If the plate section of the prosthesis is formed according to claim 5, a larger part of the greater trochander can remain on the bone in a hip joint prosthesis.
Bei einer Schaftprothese gemäß Anspruch 6 erfolgt die Verteilung des durch die erste Bohrung abgegebenen Ze¬ mentes in (bezogen auf die Achse des Schaftabschnittes) in Umfangsrichtung im wesentlichen gleichförmiger Art und Weise.In the case of a stem prosthesis according to claim 6, the distribution of the cement released through the first bore takes place in a substantially uniform manner (with respect to the axis of the stem portion) in the circumferential direction.
Die Weiterbildung der Erfindung gemäß Anspruch 7 gestat¬ tet es, von der tiefsten Stelle der Knochenausnehmung abgelegene Bereiche dieser Ausnehmung schon von Anfang an mit aufzufüllen. Dies vermindert einerseits die Füll¬ zeit, gestattet andererseits, den im unteren Teil des Schaftabschnittes liegenden Bohrungsabschnitt mit etwas kleinerem Durchmesser zu wählen, was im Hinblick auf die mechanische Belastbarkeit des unteren Endes der Prothese von Vorteil ist.The development of the invention according to claim 7 allows regions of this recess that are remote from the deepest point of the bone recess to be filled from the start. On the one hand, this reduces the filling time and, on the other hand, allows the bore section in the lower part of the shaft section to be selected with a somewhat smaller diameter, which is advantageous with regard to the mechanical strength of the lower end of the prosthesis.
Auch die Weiterbildung der Erfindung gemäß Anspruch 8 ist im Hinblick auf hohe mechanische Festigkeit des unteren Teiles des Schaftabschnittes von Vorteil. Mit der Weiterbildung der Erfindung gemäß Anspruch 9 wird erreicht, daß sich das untere Ende des Schaft- abschnittes beim Einführen in die Knochenausnehmung automatisch zentriert. Auf diese Weise ist gewährlei- stet, daß der mit Zement zu füllende Zwischenraum in Umfangsrichtung im wesentlichen gleiche Dicke hat, so daß der Zement gleichförmig in die verschiedenen Teil¬ bereiche des Zwischenraumes fließt.The development of the invention according to claim 8 is also advantageous with regard to the high mechanical strength of the lower part of the shaft section. With the development of the invention according to claim 9 it is achieved that the lower end of the shaft section is automatically centered when inserted into the bone recess. In this way it is ensured that the intermediate space to be filled with cement has essentially the same thickness in the circumferential direction, so that the cement flows uniformly into the various partial areas of the intermediate space.
Dabei ist die Weiterbildung der Erfindung gemäß An¬ spruch 10 im Hinblick auf eine geringe Behinderung der ZementStrömung und im Hinblick auf ein gutes Einführen des Schaftabschnittes in die Knochenausnehmung von Vor¬ teil.The further development of the invention according to claim 10 is advantageous with regard to a slight obstruction of the cement flow and with regard to a good insertion of the shaft section into the bone recess.
Eine Prothese gemäß Anspruch 11 kann wahlweise mit oder ohne Zentrierteil verwendet werden. Auch kann man Zen¬ trierteile mit unterschiedlicher Grundabmessung leicht gemäß den jeweiligen Bedürfnissen aufsetzen.A prosthesis according to claim 11 can optionally be used with or without a centering part. Centering parts with different basic dimensions can also be easily put on according to the respective needs.
Nachstehend wird die Erfindung anhand von Ausführungs- beispielen unter Bezugnahme auf die Zeichnung näher erläutert. In dieser zeigen:The invention is explained in more detail below on the basis of exemplary embodiments with reference to the drawing. In this show:
Figur 1: einen Längsschnitt durch das hüftgelenkseiti- ge Ende eines Oberschenkelknochens mit einem eingesetzten Schaftprothesenteil, gezeigt zu einem Zeitpunkt, in welchem das Einfüllen von Zement erst teilweise erfolgt ist;1 shows a longitudinal section through the end of a thigh bone on the hip joint side with an inserted stem prosthesis part, shown at a point in time when the cement was only partially filled;
Figur 2 : eine Aufsicht auf die Oberseite des Prothesen¬ teils nach Figur 1;FIG. 2: a top view of the upper side of the prosthesis part according to FIG. 1;
Figur 3: eine Aufsicht auf die Unterseite des Prothe- senteiles nach Figur 1; und Figur 4: eine ähnliche Ansicht wie Figur 1, in welcher jedoch ein abgewandeltes Schaftprothesenteil gezeigt ist.FIG. 3: a top view of the underside of the prosthesis part according to FIG. 1; and Figure 4: a similar view as Figure 1, but in which a modified stem prosthesis part is shown.
In Figur 1 ist bei 10 das obere Ende eines Oberschenkel¬ knochens wiedergegeben. Von diesem ist der Gelenkkopf längs einer zunächst im wesentlichen zur Knochenachse transversalen (horizontalen) Linie abgesägt, die zum Trochander major hin ansteigt. Der so erhaltene freie Rand der Corticalis ist mit 14 bezeichnet.The upper end of a thigh bone is shown at 10 in FIG. From this the joint head is sawn off along a line which is initially essentially transverse (horizontal) to the bone axis and which rises towards the greater trochander. The free edge of the corticalis thus obtained is designated by 14.
Nach dem Absägen des Femurkopfes ist im Oberschenkelkno¬ chen 10 durch Entfernen der Spongiosa eine Ausnehmung 16 erzeugt worden.After sawing off the femoral head, a recess 16 has been created in the femur 10 by removing the cancellous bone.
Im Inneren des so präparierten Knochens ist ein aus einem biokompatiblen Metall oder eine biokompatiblen Legierung gegossenes Prothesenteil 18 gezeigt. Es umfaßt einen Schaft- abschnitt 20, der grob gesprochen die Form eines tordierten spitzen rechtwinkligen Querschnitt aufweisenden Pyrami¬ denstumpfes hat, welcher zum kleinen Ende hin zunehmend in kreisförmigen Querschnitt übergeht.A prosthetic part 18 cast from a biocompatible metal or a biocompatible alloy is shown in the interior of the bone thus prepared. It comprises a shaft section 20 which, roughly speaking, has the shape of a twisted pyramid frustum having a right-angled cross section, which increasingly becomes a circular cross section towards the small end.
Am oberen Ende des Schaftabschnittes 20 liegt ein Platten¬ abschnitt 22. Nach dessen Randkontur ist die Präparie¬ rung des oberen Knochenendes vorgenommen. Der Platten¬ abschnitt 22 hat einen unter Einsatzbedingungen unter einem kleinen Winkel von etwa 5-10 zur Knochenachse hin abfallenden Hauptabschnitt 24 und einen von einer der Schaftachse bzw. Knochenachse benachbarten Stelle unter einem Winkel von etwa 60 schräg zum Trochander major ansteigenden Seitenabschnitt 26.A plate section 22 is located at the upper end of the shaft section 20. The upper bone end is prepared according to its edge contour. The plate section 22 has a main section 24 which drops under operating conditions at a small angle of approximately 5-10 to the bone axis and a side section 26 which rises at an angle of approximately 60 obliquely to the greater trochander from a point adjacent to the shaft axis or bone axis.
Wie aus Figur 1 gut ersichtlich, steht der Plattenabschnitt 22 so weit über das obere Ende des Schaftabschnittes 20 in radialer Richtung über, daß er den durch die Knochen¬ präparation geschaffenen Rand 14 des Oberschenkelknochens 10 deckelähnlich verschließt.As can be clearly seen from FIG. 1, the plate section stands 22 so far over the upper end of the shaft section 20 in the radial direction that it closes the edge 14 of the femur 10 created by the bone preparation in a cover-like manner.
An den Plattenabschnitt 22 ist ein Zapfenabschnitt 28 angeformt, der unter einem Winkel von etwa 40-70°, im Normalfalle von etwa 60 zur Ebene des Hauptabschnit¬ tes 24 nach innen und oben geneigt ist .A pin section 28 is formed on the plate section 22 and is inclined inwards and upwards at an angle of approximately 40-70 °, in the normal case of approximately 60 to the plane of the main section 24.
Im Schaftabschnitt 20 ist eine Durchgangsbohrung 32 vorgesehen, welche sich von der untenliegenden Stirnflä¬ che des Schaftabschnittes 20 durch letzteren und den Plattenabschnitt 22 hindurcherstreckt und bei der Ober- seite des Plattenabschnittes 22 ausmündet.A through bore 32 is provided in the shaft section 20, which extends from the lower end face of the shaft section 20 through the latter and the plate section 22 and opens out on the upper side of the plate section 22.
Im Plattenabschnitt 22 ist in einem randseitigen Bereich eine zweite Durchgangsbohrung 34 vorgesehen, welche dort von der Oberseite des Plattenabschnittes 22 zu dessen Unterseite führt. Die Durchgangsbohrung 34 fluch¬ tet in zur Zeichenebene von Figur 1 senkrechter Richtung im wesentlichen mit dem Fußpunkt der Achse des Zapfen¬ abschnittes 28. Unter Operationsbedingungen (Patient liegt im wesentlichen in der Zeichenebene von Figur 1) , liegt die Durchgangsbohrung 34 am höchsten Punkt des Zwischenraumes 36, der zwischen der Außenfläche des Schaftabschnittes 20 und der Innenfläche der Ausneh¬ mung 16 liegt.In the plate section 22, a second through hole 34 is provided in a region on the edge, which leads there from the upper side of the plate section 22 to its underside. The through hole 34 is aligned in the direction perpendicular to the drawing plane of FIG. 1 essentially with the base point of the axis of the pin section 28. Under operating conditions (patient lies essentially in the drawing plane of FIG. 1), the through hole 34 lies at the highest point of the Intermediate space 36 which lies between the outer surface of the shaft section 20 and the inner surface of the recess 16.
Um den Zwischenraum 36 unter Operationsbedingungen blasen¬ frei mit einem flüssigen biokompatiblen Zement zu füllen, ist das obere Ende der Durchgangsbohrung 32 über eine Leitung 38 mit einem Dispenser 40 für diesen flüssigen Zement verbunden, wie in Figur 1 schematisch dargestellt. Die zweite Durchgangsbohrung 34 ist über eine Leitung 42 mit einer Vakuumquelle verbunden, die als Gebläse 44 gezeigt ist.In order to fill the intermediate space 36 free of bubbles with a liquid biocompatible cement under operating conditions, the upper end of the through bore 32 is connected via a line 38 to a dispenser 40 for this liquid cement, as shown schematically in FIG. The second through hole 34 is via a line 42 is connected to a vacuum source, shown as blower 44.
Um ein in (bezogen auf die Achse des Schaftabschnittes 20) in Umfangsrichtung gleichförmiges Füllen des Zwischen¬ raumes 36 zu gewährleisten und zugleich das Zentrieren des unteren Endes des Schaftabschnittes 20 in der Ausneh¬ mung 16 sicherzustellen, ist das untere Schaftende mit einer zylindrischen Lagerfläche 46 versehen, auf welcher ein Zentrierteil 48 sitzt. Letzteres hat einen Nabenab¬ schnitt 50 sowie eine Vielzahl konvexer Federfinger 52, die an den Nabenabschnitt 50 angeformt sind.In order to ensure that the intermediate space 36 is filled uniformly (in relation to the axis of the shaft section 20) in the circumferential direction and at the same time to ensure that the lower end of the shaft section 20 is centered in the recess 16, the lower shaft end is provided with a cylindrical bearing surface 46 provided, on which a centering part 48 is seated. The latter has a hub section 50 and a large number of convex spring fingers 52 which are molded onto the hub section 50.
Das Zentrierteil 48 kann ein aus biokompatiblem Kunst- stoff gespritztes Teil oder ein aus einem biokompatiblenThe centering part 48 can be a part molded from a biocompatible plastic or a part made from a biocompatible
Metall oder einer solchen Legierung gegossenes oder spanend hergestelltes Teil sein. In Abwandlung kann das Zentrier¬ teil 48 auch einstückig mit dem Schaftabschnitt 20 und den restlichen Prothesenteilen ausgebildet sein und ebenso wie die anderen Abschnitte der Prothese aus einem biokom¬ patiblen Metall bzw. einer biokompatiblen Legierung oder einem biokompatiblen Keramikmaterial hergestellt sein.Metal or such an alloy cast or machined part. In a modification, the centering part 48 can also be formed in one piece with the shaft section 20 and the remaining prosthesis parts and, like the other sections of the prosthesis, can be made from a biocompatible metal or a biocompatible alloy or a biocompatible ceramic material.
Das oben beschriebene Prothesenteil kann wie folgt im zuvor wie oben beschrieben präparierten Knochenende festgelegt werden:The prosthesis part described above can be fixed as follows in the previously prepared bone end as described above:
Aus dem resektierten Abschnitt des Oberschenkelknochens wird ein Pfropfen 54 hergestellt, dessen Durchmesser im wesentlichen dem Querschnitt der Ausnehmung 16 beim tiefsten Ende entspricht. Dieser Pfropfen wird mit einem geeigneten Werkzeug gegen das untere Ende der Ausnehmung 16 gedrückt. Nun werden die Leitungen 38 und 42 an die Bohrungen 32 und 34 angeschlossen. Auf den Rand der Unterseite des Plattenabschnittes 22 wird eine dickere (in der Praxis etwa 1-2 mm dicke) Schicht aus einer Zementmasse aufgebracht, die in ihren Grundbestandteilen dem bio¬ kompatiblen Zement entspricht, welcher im Dispenser 40 enthalten ist. Die Zementmasse enthält aber Füll¬ stoffe oder andere die Viskosität erhöhende Zusätze, so daß die Zementmasse eine breiige dichtmassenähnliche Konsistenz erhält.A plug 54 is produced from the resected section of the femur, the diameter of which corresponds essentially to the cross section of the recess 16 at the deepest end. This plug is pressed against the lower end of the recess 16 using a suitable tool. Now the lines 38 and 42 are connected to the holes 32 and 34. A thicker (in practice about 1-2 mm thick) layer of a cement mass is applied to the edge of the underside of the plate section 22, the basic components of which correspond to the bio-compatible cement which is contained in the dispenser 40. However, the cement paste contains fillers or other additives which increase the viscosity, so that the cement paste acquires a pulpy consistency similar to that of a sealant.
Das Prothesenteil 18 wird nun in die Ausnehmung 16 hinein¬ gedrückt, wobei das untere Ende des Schaftabschnittes 20 durch das Zentrierteil 48 geführt und zentriert wird. Dieses axiale Vorschieben des Prothesenteiles 18 findet sein Ende, wenn die Unterseite des Plattenabschnittes 22 am Rand 14 des offenen Knochenendes anlangt. Dabei wird die Zementmasse teilweise wie bei 60 und 64 angedeutet aus der Fuge zwischen Plattenabschnitt und 22 einwärts bzw. auswärts verdrängt, wo die Resektionslinie der Randkontur des Plattenabschnittes 22 gut folgt. An anderen Stellen, bei denen der Rand 14 nicht exakt auf die Randkontur des Plattenabschnittes 22 gearbeitet werden konnte, bildet die Zementmasse eine Dichtfuge, wie bei 62 angedeutet. Die Zementmasse 64, welche nach außen über die Außenfläche des Plattenabschnittes 22 und des Oberschenkelknochens 10 ausgetreten ist, wird mit einem Schaber entfernt.The prosthesis part 18 is now pressed into the recess 16, the lower end of the shaft section 20 being guided and centered by the centering part 48. This axial advancement of the prosthesis part 18 comes to an end when the underside of the plate section 22 reaches the edge 14 of the open bone end. The cement mass is partially displaced inwards and outwards, as indicated at 60 and 64, from the joint between the plate section and 22, where the resection line follows the edge contour of the plate section 22 well. At other points where the edge 14 could not be worked exactly on the edge contour of the plate section 22, the cement mass forms a sealing joint, as indicated at 62. The cement paste 64, which has leaked outwards over the outer surface of the plate section 22 and the femur 10, is removed with a scraper.
Nunmehr ist der zwischen der Innenfläche der Ausnehmung 16 und der Außenfläche des Schaftabschnittes 20 sowie der Unterseite des Plattenabschnittes 22 liegende Zwi¬ schenraum 36 dicht verschlossen. Der Zwischenraum 36 wird nun mit Unterdruck beaufschlagt und gleichzeitig wird der Stempel des Dispensers 40 bewegt. Dabei füllt sich der Zwischenraum 36 zunehmend mit dem flüssigen Zement, wobei der letzte mit Zement gefüllte Abschnitt des Zwischenraumes vor der Durchgangsbohrung 34 liegt, so daß der Zwischenraum 36 insgesamt vollständig und blasenfrei aufgefüllt wird.Now the intermediate space 36 lying between the inner surface of the recess 16 and the outer surface of the shaft section 20 and the underside of the plate section 22 is tightly closed. The intermediate space 36 is now subjected to negative pressure and at the same time the stamp of the dispenser 40 is moved. The space 36 increasingly fills with the liquid Cement, the last section of the space filled with cement lying in front of the through hole 34, so that the space 36 as a whole is filled completely and without bubbles.
Während des Füllens des Zwischenraumes 36 mit Zement und während des Aushärtens des Zements (typischerweise etwa 5 Minuten) kann der Operateur noch kleinere Lage- korrekturen an dem Prothesenteil 18 vornehmen. Nach dem Aushärten des in den Zwischenraum 36 eingegebenen Zementes härtet dann auch die Dichtfuge 62 aus.During the filling of the intermediate space 36 with cement and during the hardening of the cement (typically about 5 minutes), the surgeon can make even smaller positional corrections on the prosthesis part 18. After the cement introduced into the intermediate space 36 has hardened, the sealing joint 62 also hardens.
Der Pfropfen 54 hat beim Füllen des Zwischenraumes 36 mit flüssigem Zement verhindert, daß sich unterhalb des Prothesenteiles 18 ein größeres geschlossenes Ze¬ mentvolumen ansammelt. Letzteres wäre im Hinblick auf ein etwa notwendiges Wiederentfernen des Prothesenteiles und seinen Ersatz durch ein anderes Prothesenteil nach¬ teilig.The plug 54, when filling the intermediate space 36 with liquid cement, prevented a larger closed cement volume from accumulating below the prosthesis part 18. The latter would be disadvantageous with regard to any necessary removal of the prosthesis part and its replacement by another prosthesis part.
Das in der Zeichnung dargestellte Prothesenteil ist für die Verwendung bei einer Gelenkprothese für die rechte Hüfte bestimmt. Es versteht sich, daß man bei einem Prothesenteil für die linke Hüfte eine zum dar- gestellten Prothesenteil im wesentlichen symmetrische Gestalt verwendet, wobei insbesondere die zweite Durch¬ gangsbohrung 34 wieder beim oberen Rand des Plattenab¬ schnittes 22 liegt, so daß über sie auch die letzten Luftmengen aus dem Zwischenraum 36 abgezogen werden können.The prosthesis part shown in the drawing is intended for use with a joint prosthesis for the right hip. It goes without saying that a prosthesis part for the left hip has a shape which is substantially symmetrical with the prosthesis part shown, the second through bore 34 in particular lying again at the upper edge of the plate section 22, so that it also overlies it last amounts of air can be withdrawn from the space 36.
Bei dem abgewandelten Ausführungsbeispiel nach Figur 3 ist die erste Durchgangsbohrung 32 eine Stufenbohrung mit zum unteren Ende des Schaftabschnittes 20 abnehmen- dem Durchmesser. Auf diese Weise hat das untere Ende des Schaftabschnittes 20 verglichen mit dem Ausführungs¬ beispiel nach Figur 1-3 größere Wandstärke und damit größere mechanische Belastbarkeit . Um die durch diese Querschnittsverminderung bedingte Erhöhung des Strömungs- Widerstandes für den flüssigen Zement zu kompensieren, sind in der Wand des Schaftabschnittes 20 über dessen Länge verteilt radiale Zweigbohrungen 66 vorgesehen, welche in die Außenfläche des Schaftabschnittes 20 aus¬ münden. Diese Zweitbohrungen 66 sind so verteilt, daß sie keine ins Gewicht fallende lokale Schwächung des Schaftabschnittes 20 bedingen. Dies läßt sich z.B. da¬ durch gewährleisten, daß die Zweigbohrungen 66 längs einer oder mehrerer Wendellinien 68 angeordnet werden.In the modified exemplary embodiment according to FIG. 3, the first through bore 32 is a stepped bore with a diameter decreasing towards the lower end of the shaft section 20. This way the bottom end of the shaft section 20 compared to the embodiment according to FIGS. 1-3 greater wall thickness and thus greater mechanical strength. In order to compensate for the increase in the flow resistance for the liquid cement due to this reduction in cross-section, radial branch bores 66 are provided in the wall of the shaft section 20 distributed over its length and open out into the outer surface of the shaft section 20. These second bores 66 are distributed in such a way that they do not cause any significant local weakening of the shaft section 20. This can be ensured, for example, by arranging the branch bores 66 along one or more spiral lines 68.
Vorzugsweise ist die Leitung 38 ein flexibler Schlauch, der ebenso wie der Dispenser 40 ein Wegwerfteil ist. Am Ende der als Schlauch ausgebildeten Leitung 38 ist ein kegelstumpfförmiges Kupplungsstück 70 vorgesehen, durch welches eine leicht herstellbare und leicht lösbare Verbindung zum freien Ende der Durchgangsbohrung 32 hergestellt werden kann. Das Kupplungsstück 70 sitzt reibschlüssig in dem entsprechend aufgekelchten Endab¬ schnitt 72 der Bohrung 32. Um sein Wiederabziehen auch bei Verunreinigung mit Zement zu erleichtern ist es aus einem Kunststoffmaterial hergestellt, auf welchem der Zement nur schlecht haftet. The line 38 is preferably a flexible hose which, like the dispenser 40, is a disposable part. At the end of the line 38 designed as a hose, a truncated cone-shaped coupling piece 70 is provided, by means of which an easily producible and easily releasable connection to the free end of the through bore 32 can be established. The coupling piece 70 is frictionally seated in the correspondingly gated end portion 72 of the bore 32. In order to facilitate its removal even when contaminated with cement, it is made of a plastic material to which the cement adheres only poorly.

Claims

Patentansprüche claims
1. Prothesenteil mit einem in eine Knochenausnehmung (16) einsetzbaren Schaftabschnitt (20) und einem Zapfenabschnitt (28) , auf welchem ein Gelenkteil (30) befestigbar ist, dadurch gekennzeichnet, daß zwischen dem Schaftabschnitt (20) und dem Zapfenabschnitt (28) ein Plattenabschnitt (22) vorgesehen ist, welcher über den Schaftabschnitt (20) allseitig übersteht und dessen Ebene mit der Achse des Zapfenabschnittes (28) einen Winkel von zwischen etwa 40 und etwa 70 einschließt; und daß sich durch den Schaftabschnitt (20) und den darüber liegenden Plattenabschnitt (22) eine erste Durch¬ gangsbohrung (32) erstreckt und sich durch den über den Schaftabschnitt (20) überstehenden Bereich des Plat¬ tenabschnittes (22) eine zweite Durchgangsbohrung (34) erstreckt .1. prosthesis part with a shaft portion (20) which can be inserted into a bone recess (16) and a pin portion (28) on which a joint part (30) can be fastened, characterized in that between the shaft portion (20) and the pin portion (28) A plate section (22) is provided which protrudes on all sides over the shaft section (20) and the plane of which includes an angle of between approximately 40 and approximately 70 with the axis of the pin section (28); and that a first through hole (32) extends through the shaft section (20) and the plate section (22) lying above it, and a second through hole (34) extends through the region of the plate section (22) projecting beyond the shaft section (20) ) extends.
2. Prothesenteil nach Anspruch 1, dadurch gekennzeich¬ net, daß der Schaftabschnitt (20) die Gestalt eines im wesentlichen viereckigen transversalen Querschnitt aufweisenden Pyramidenstumpfes hat.2. Prosthesis part according to claim 1, characterized gekennzeich¬ net that the shaft portion (20) has the shape of a substantially quadrangular transverse cross-section having a truncated pyramid.
3. Prothesenteil nach Anspruch 2, dadurch gekennzeich¬ net, daß die Pyramide um ihre Längsachse tordiert ist.3. prosthesis part according to claim 2, characterized gekennzeich¬ net that the pyramid is twisted about its longitudinal axis.
4. Prothesenteil nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß der Plattenabschnitt (22) den Schaftabschnitt (20) um etwa 3-8 mm, vorzugsweise zwischen etwa 4 und etwa 6 überragt.4. Prosthesis part according to one of claims 1-3, characterized in that the plate section (22) projects over the shaft section (20) by about 3-8 mm, preferably between about 4 and about 6.
5. Prothesenteil nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß der Plattenabschnitt (22) einen Seitenabschnitt (26) aufweist, der aus der Ebene eines Plattenhauptabschnittes (24) nach oben herausgekippt ist, vorzugsweise um einen dem Anstellwinkel des Zapfen- abschnittes (28) betragsmäßig entsprechenden Winkel.5. prosthesis part according to any one of claims 1-4, characterized characterized in that the plate section (22) has a side section (26) which is tilted upwards out of the plane of a main plate section (24), preferably by an angle corresponding to the angle of attack of the pin section (28).
6. Prothesenteil nach einem der Ansprüche 1-5, dadurch gekennzeichnet, daß die erste Durchgangsbohrung6. prosthesis part according to any one of claims 1-5, characterized in that the first through hole
(32) in die untenliegende Stirnfläche des Schaftabschnit- tes (20) ausmündet.(32) opens out into the lower end face of the shaft section (20).
7. Prothesenteil nach einem der Ansprüche 1-6, dadurch gekennzeichnet, daß von der ersten Durchgangsbohrung7. prosthesis part according to any one of claims 1-6, characterized in that from the first through hole
(32) Zweigbohrungen (66) mit radialer Erstreckungskompo- nente ausgehen, welche in die Mantelfläche des Schaftab¬ schnittes (20) ausmünden.(32) branch bores (66) with a radial extension component, which open into the lateral surface of the shaft section (20).
8. Prothesenteil nach Anspruch 7, dadurch gekennzeichnet, daß die Zweigbohrungen (66) in axialer Richtung und in Umfangsrichtung gegeneinander versetzt sind, insbesondere längs einer oder mehrerer Wendellinien (68) über den Schaftabschnitt (20) verteilt sind.8. prosthesis part according to claim 7, characterized in that the branch bores (66) are offset from one another in the axial direction and in the circumferential direction, in particular along one or more helix lines (68) are distributed over the shaft portion (20).
9. Prothesenteil nach einem der Ansprüche 1-8, dadurch gekennzeichnet, daß auf dem freien Ende des Schaft- abschnittes (20) ein elastisch verforrnbares Zentrierteil (48) vorgesehen ist.9. prosthesis part according to one of claims 1-8, characterized in that an elastically deformable centering part (48) is provided on the free end of the shaft portion (20).
10. Prothesenteil nach Anspruch 9, dadurch gekennzeich- net, daß das Zentrierteil (48) eine Mehrzahl in10. Prosthesis part according to claim 9, characterized in that the centering part (48) has a plurality in
Umfangsrichtung verteilter konvexer Federfinger (52) aufweist .Has circumferentially distributed convex spring fingers (52).
11. Prothesenteil nach Anspruch 10, dadurch gekenn- zeichnet, daß die Federfinger (52) von einem Naben- abschnitt (50) getragen sind, welcher auf eine Lager¬ fläche (46) des Schaftabschnittes (20) aufgesteckt ist.11. Prosthesis part according to claim 10, characterized in that the spring fingers (52) from a hub section (50) are worn, which is attached to a bearing surface (46) of the shaft section (20).
12. Materialkit zur Verwendung beim Einzementieren eines Prothesenteiles nach einem der Ansprüche12. Material kit for use in cementing a prosthetic part according to one of the claims
1-11, gekennzeichnet durch ein erstes Volumen flüssigen härtbaren Zementes (56) und ein zweites Volumen pastöser härtbarer Dichtmasse, wobei die Aushärtungszeit der Dichtmasse größer ist als die des Zementes (56) .1-11, characterized by a first volume of liquid hardenable cement (56) and a second volume of pasty hardenable sealing compound, the hardening time of the sealing compound being longer than that of the cement (56).
13. Materialkit nach Anspruch 12, dadurch gekennzeich¬ net, daß die Dichtmasse (58) ähnliche Grundchemie aufweist wie der Zement (56) , jedoch mit mindestens einem Zusatz versehen ist, durch welchen sie pastöse Konsistenz erhält.13. Material kit according to claim 12, characterized gekennzeich¬ net that the sealing compound (58) has similar basic chemistry as the cement (56), but is provided with at least one additive, through which it receives pasty consistency.
14. Materialkit nach Anspruch 12 oder 13, dadurch gekennz¬ eichnet, daß der Zement (56) in einem Dispenser (40) enthalten ist, welcher - gegebenenfalls über eine Leitung (38) - mit dem freien Ende der ersten Durchgangsbohrung (32) verbindbar ist.14. Material kit according to claim 12 or 13, characterized gekennz¬ eichnet that the cement (56) is contained in a dispenser (40) which - optionally via a line (38) - with the free end of the first through hole (32) is.
15. Materialkit nach Anspruch 14, dadurch gekennzeich¬ net, daß der Dispenser (40) bzw. die mit ihm ver- bundene Leitung (42) ein kegelstumpfförmiges Kupplungs¬ stück (70) aufweist, welches in einen kegelig ausgewei¬ teten Endabschnitt (72) der ersten Durchgangsbohrung (32) reibschlüssig einsetzbar ist.15. Material kit according to claim 14, characterized in that the dispenser (40) or the line (42) connected to it has a truncated cone-shaped coupling piece (70), which in a tapered end portion (72 ) the first through hole (32) can be used in a frictional manner.
16. Materialkit nach Anspruch 15, dadurch gekennzeich¬ net, daß das Kupplungsstück (70) aus einem Material hergestellt ist, auf welchem der Zement schlecht haftet. 16. Material kit according to claim 15, characterized gekennzeich¬ net that the coupling piece (70) is made of a material on which the cement adheres poorly.
PCT/EP1997/001646 1996-04-02 1997-04-02 Shaft prosthesis part and material kit for use therewith WO1997036558A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97918096A EP0891168A1 (en) 1996-04-02 1997-04-02 Shaft prosthesis part and material kit for use therewith

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19613081A DE19613081A1 (en) 1996-04-02 1996-04-02 Prosthesis part for a stem prosthesis and material kit for use with such
DE19613081.6 1996-04-02

Publications (1)

Publication Number Publication Date
WO1997036558A1 true WO1997036558A1 (en) 1997-10-09

Family

ID=7790210

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/001646 WO1997036558A1 (en) 1996-04-02 1997-04-02 Shaft prosthesis part and material kit for use therewith

Country Status (3)

Country Link
EP (1) EP0891168A1 (en)
DE (1) DE19613081A1 (en)
WO (1) WO1997036558A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908159B1 (en) * 1997-09-16 2004-06-09 Franz Copf Femoral prosthesis

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740690A1 (en) * 1997-09-16 1999-03-18 Copf Franz Prof Dr Med Cortical layer upper thigh bone prothesis
FR2772595B1 (en) * 1997-12-22 2001-03-23 Groupe Lepine CENTERING DEVICE FOR CEMENT-FIXED MEDULAR ROD
DE19848476C1 (en) * 1998-10-21 2000-08-31 Aesculap Ag & Co Kg Endoprosthesis
GB2351671B (en) * 1999-07-02 2004-02-25 Bridgehall Consultants Ltd Hip prosthesis with femoral component and corresponding cotyloid element with high implantation adaptability
EP1132062B1 (en) * 2000-03-01 2004-08-04 Sulzer Orthopedics Ltd. Cement affixated shaft prosthesis
DE10037345A1 (en) * 2000-07-29 2002-02-07 Juergen Buchholz Surgical element
FR2831052B1 (en) * 2001-10-24 2004-07-30 Alain Durand RANGE OF FEMALE RODS FIXED BY A LIQUID INJECTED BY THEIR CENTER
EP1316297A1 (en) * 2001-12-03 2003-06-04 Sulzer Orthopedics Ltd. Device for transfering bone cement into a spongiosa

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2082072A (en) * 1980-07-09 1982-03-03 Brown Byron L Femoral stem hip prosthesis
EP0393425A1 (en) * 1989-04-15 1990-10-24 Bristol-Myers Squibb Company Femoral part of a hip joint endoprothesis implantable with cement
EP0423064A1 (en) * 1989-10-12 1991-04-17 SULZER Medizinaltechnik AG Hip joint prosthesis with mesh-like anchoring means
EP0428127A1 (en) * 1989-11-14 1991-05-22 V. Dipl.-Ing. Dr. Med . Jansson Endoprothesis to be inplanted with cement
EP0434604A1 (en) * 1989-12-15 1991-06-26 GebràœDer Sulzer Aktiengesellschaft Anchored shaft for a femoral prosthesis
WO1991008720A1 (en) * 1989-12-07 1991-06-27 Laboratorium Für Experimentelle Chirurgie Adaptable stem for an endoprosthesis
US5085861A (en) * 1987-03-12 1992-02-04 The Beth Israel Hospital Association Bioerodable implant composition comprising crosslinked biodegradable polyesters
FR2674744A1 (en) * 1991-04-02 1992-10-09 Fabrication Etu Realisa Implan Femoral replacement shaft
DE4228317A1 (en) * 1992-08-26 1994-03-03 Eberhard Dr Mayer Fastening element for artificial joints - using synthetic resin to press compatible metal foil on to joint
US5314493A (en) * 1992-09-10 1994-05-24 Mikhail Michael W E Femoral hip joint prosthesis
US5336264A (en) * 1988-04-20 1994-08-09 Norian Corporation Situ prepared calcium phosphate composition and method
FR2710257A1 (en) * 1993-09-24 1995-03-31 Hardy Jean Marie Femoral shaft for a hip prosthesis

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2082072A (en) * 1980-07-09 1982-03-03 Brown Byron L Femoral stem hip prosthesis
US5085861A (en) * 1987-03-12 1992-02-04 The Beth Israel Hospital Association Bioerodable implant composition comprising crosslinked biodegradable polyesters
US5336264A (en) * 1988-04-20 1994-08-09 Norian Corporation Situ prepared calcium phosphate composition and method
EP0393425A1 (en) * 1989-04-15 1990-10-24 Bristol-Myers Squibb Company Femoral part of a hip joint endoprothesis implantable with cement
EP0423064A1 (en) * 1989-10-12 1991-04-17 SULZER Medizinaltechnik AG Hip joint prosthesis with mesh-like anchoring means
EP0428127A1 (en) * 1989-11-14 1991-05-22 V. Dipl.-Ing. Dr. Med . Jansson Endoprothesis to be inplanted with cement
WO1991008720A1 (en) * 1989-12-07 1991-06-27 Laboratorium Für Experimentelle Chirurgie Adaptable stem for an endoprosthesis
EP0434604A1 (en) * 1989-12-15 1991-06-26 GebràœDer Sulzer Aktiengesellschaft Anchored shaft for a femoral prosthesis
FR2674744A1 (en) * 1991-04-02 1992-10-09 Fabrication Etu Realisa Implan Femoral replacement shaft
DE4228317A1 (en) * 1992-08-26 1994-03-03 Eberhard Dr Mayer Fastening element for artificial joints - using synthetic resin to press compatible metal foil on to joint
US5314493A (en) * 1992-09-10 1994-05-24 Mikhail Michael W E Femoral hip joint prosthesis
FR2710257A1 (en) * 1993-09-24 1995-03-31 Hardy Jean Marie Femoral shaft for a hip prosthesis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908159B1 (en) * 1997-09-16 2004-06-09 Franz Copf Femoral prosthesis

Also Published As

Publication number Publication date
EP0891168A1 (en) 1999-01-20
DE19613081A1 (en) 1997-10-09

Similar Documents

Publication Publication Date Title
DE3912465C1 (en)
EP0795306B1 (en) Modular bone prosthesis with cup and pins
DE3715000C2 (en)
EP0622056B1 (en) Implantable anchoring organ for receiving prostheses and the like
EP0083708B1 (en) Acetabular cup to be anchored in the pelvis without cement
DE102013213831B4 (en) Knee spacer for temporary replacement of an artificial knee joint
DE2610922A1 (en) STEM FOR KNEE JOINT ENDOPROSTHESES
DE3229027A1 (en) NOZZLE FOR FILLING A TUBE BONE WITH CEMENT
EP0428127B1 (en) Endoprothesis to be inplanted with cement
EP0311749A1 (en) Femoral part of a hip joint endoprosthesis
DE2356464A1 (en) SIMPLE FEMORAL HEAD DROSTHESIS AND DRILLING DEVICE FOR ITS FIXING
DE2359627A1 (en) ELBOW JOINT ENDOPROTHESIS
DE102010044571A1 (en) base graft
DE60118818T2 (en) Cement sleeve for a cemented artificial joint shaft and artificial joint with the cement sleeve
EP0891168A1 (en) Shaft prosthesis part and material kit for use therewith
WO1994007439A1 (en) Endoprosthesis shaft
EP1728489B1 (en) Hip endoprosthesis with acetabular having sealed bores
DE2129832A1 (en) Hip joint prosthesis and process for its manufacture
EP0962199A1 (en) Shaft prosthesis
DE3412224C2 (en)
DE4310592A1 (en) Artificial acetabular cup
EP0908160A2 (en) Prosthesis
WO1994001063A1 (en) Implant and process for producing the same
EP1592369A1 (en) Hip joint prosthesis comprising a shaft to be inserted into the femur
DE60219352T2 (en) SET OF FEATURES FIXED WITH A LIQUID INJECTED BY THEIR CENTER

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1997918096

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 97534948

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 1997918096

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1997918096

Country of ref document: EP