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FR2634371A1 - Hip prosthesis and method for manufacturing such a prosthesis - Google Patents

  • ️Fri Jan 26 1990

FR2634371A1 - Hip prosthesis and method for manufacturing such a prosthesis - Google Patents

Hip prosthesis and method for manufacturing such a prosthesis Download PDF

Info

Publication number
FR2634371A1
FR2634371A1 FR8809869A FR8809869A FR2634371A1 FR 2634371 A1 FR2634371 A1 FR 2634371A1 FR 8809869 A FR8809869 A FR 8809869A FR 8809869 A FR8809869 A FR 8809869A FR 2634371 A1 FR2634371 A1 FR 2634371A1 Authority
FR
France
Prior art keywords
rod
prosthesis according
hip prosthesis
base
turns
Prior art date
1988-07-21
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR8809869A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1988-07-21
Filing date
1988-07-21
Publication date
1990-01-26
1988-07-21 Application filed by Individual filed Critical Individual
1988-07-21 Priority to FR8809869A priority Critical patent/FR2634371A1/en
1990-01-26 Publication of FR2634371A1 publication Critical patent/FR2634371A1/en
Status Pending legal-status Critical Current

Links

  • 238000004519 manufacturing process Methods 0.000 title claims description 5
  • 238000000034 method Methods 0.000 title description 3
  • RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
  • 238000005520 cutting process Methods 0.000 claims description 5
  • 229910052719 titanium Inorganic materials 0.000 claims description 5
  • 239000010936 titanium Substances 0.000 claims description 5
  • 238000010079 rubber tapping Methods 0.000 claims description 3
  • 210000000988 bone and bone Anatomy 0.000 description 10
  • 238000009434 installation Methods 0.000 description 3
  • 238000010894 electron beam technology Methods 0.000 description 2
  • 239000000463 material Substances 0.000 description 2
  • 230000002238 attenuated effect Effects 0.000 description 1
  • 230000000903 blocking effect Effects 0.000 description 1
  • 230000000977 initiatory effect Effects 0.000 description 1
  • 230000017074 necrotic cell death Effects 0.000 description 1
  • 239000000565 sealant Substances 0.000 description 1
  • 238000000926 separation method Methods 0.000 description 1
  • 210000002435 tendon Anatomy 0.000 description 1

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30721—Accessories
    • A61F2/30723—Plugs or restrictors for sealing a cement-receiving space
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—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
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30289—Three-dimensional shapes helically-coiled
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—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
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—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
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • A61F2002/30339—Double cones, i.e. connecting element having two conical connections, one at each of its opposite ends
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • 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
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
    • A61F2002/3054—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30785—Plurality of holes parallel
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—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
    • A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/02—Prostheses implantable into the body
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    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
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    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
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    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3652—Connections of necks to 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
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0058—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

a) The present invention relates to a hip prosthesis comprising a rod 1, 101 intended to be housed in the femoral canal, a base 2 with a branch 42, 42A carrying the head of the prosthesis. b) This hip prosthesis is characterised in that the rod 1, 101 consists, at least partially 11, 111, 114, of a helical spring 16, 116, 116A. c) The invention applies to hip prostheses.

Description

"Prothèse de hanche et procédé de fabrication d'une telle prothèse"
La présente invention concerne une prothèse de hanche comprenant une tige destinée à être logée dans le canal fémoral et une embase avec un organe de liaison portant la tête de prothèse."Hip prosthesis and method of manufacturing such a prosthesis"
The present invention relates to a hip prosthesis comprising a rod intended to be housed in the femoral canal and a base with a connecting member carrying the prosthesis head.

On connaît déjà différentes prothèses de hanche du type ci-dessus, destinées à être enfoncées dans le canal fémoral sans utiliser de produit de scellement. Various hip prostheses of the above type are already known, intended to be inserted into the femoral canal without using a sealant.

Ces prothèses ont été réalisées en différents matériaux ; actuellement elle sont en général réalisées en titane. These prostheses were made of different materials; currently they are generally made of titanium.

Le principal inconvénient des prothèses connues est la rigidité de la tige, c'est-à-dire que le module d'élasticité de la tige est très différent de celui de l'os, ce qui crée des contraintes mécaniques très importantes à l'interface entre la tige et l'os, contraintes qui se traduisent au bout d'un certain temps par des difficultés physiologiques telles qu'une amorce de nécrose de l'os, etc... The main drawback of known prostheses is the rigidity of the rod, that is to say that the elastic modulus of the rod is very different from that of the bone, which creates very high mechanical stresses on the interface between the stem and the bone, constraints which translate after a certain time into physiological difficulties such as the initiation of necrosis of the bone, etc.

Il existe également une prothèse de ce type dont la tige est fendue. Cette tige fendue présente ainsi une certaine souplesse dans une direction. There is also a prosthesis of this type, the stem of which is split. This split rod thus has a certain flexibility in one direction.

Toutefois, cette souplesse n'est, de loin, pas suffi sante pour éviter les problèmes médicaux évoqués cidessus. De plus, la déformabilité dans la direction privilégiée de cette tige grâce à la partie fendue, disparaît relativement rapidement ou du moins est très largement atténuée par la réhabilitation de l'os dans la fente de la tige.However, this flexibility is by far not sufficient to avoid the medical problems mentioned above. In addition, the deformability in the preferred direction of this rod thanks to the split part, disappears relatively quickly or at least is very largely attenuated by the rehabilitation of the bone in the slot of the rod.

La présente invention a pour but de remédier à ces inconvénients et se propose de créer une prothèse de hanche, notamment réalisée en titane, dont la tige présente un module d'élasticité dans toutes les directions, semblable à celui de l'os. The present invention aims to remedy these drawbacks and proposes to create a hip prosthesis, in particular made of titanium, the rod of which has a modulus of elasticity in all directions, similar to that of bone.

A cet effet, l'invention concerne une prothèse de hanche du type ci-dessus, caractérisée en ce que la tige est constituée, au moins partiellement, d'un ressort hélicoïdal. To this end, the invention relates to a hip prosthesis of the above type, characterized in that the rod consists, at least partially, of a helical spring.

La tige présente ainsi une souplesse dans toutes les directions, adaptée à la souplesse de l'os de sorte que cette tige peut suivre la déformation de l'os soumis aux différentes contraintes de fonctionnement. The rod thus has flexibility in all directions, adapted to the flexibility of the bone so that this rod can follow the deformation of the bone subjected to different operating constraints.

Suivant les cas, il peut suffire que la partie inférieure ou partie principale de la tige soit sous forme de ressort hélicoïdal. Dans d'autres cas, il peut être intéressant de réaliser une tige souple sur toute sa longueur. Depending on the case, it may suffice that the lower part or main part of the rod is in the form of a helical spring. In other cases, it may be advantageous to produce a flexible rod over its entire length.

Suivant une caractéristique particulièrement intéressante les spires de la partie en forme de ressort hélicoïdal sont jointives. According to a particularly interesting characteristic, the turns of the part in the form of a helical spring are contiguous.

Comme les spires sont parfaitement jointives, l'os ne risque pas de réhabiliter les intervalles entre les spires, de bloquer le mouvement relatif de celles-ci et d'augmenter ainsi le module d'élasticité. As the turns are perfectly contiguous, the bone does not risk rehabilitating the intervals between the turns, blocking their relative movement and thus increasing the modulus of elasticity.

Suivant une autre caractéristique, la prothèse est en titane. According to another characteristic, the prosthesis is made of titanium.

Suivant -une autre caractéristique, la tige est creuse et la partie en forme de ressort hélicoïdal est découpée dans la masse. According to another characteristic, the rod is hollow and the part in the form of a helical spring is cut from the mass.

Suivant une autre caractéristique, le filet s'étend également sur la partie supérieure de la tige et le canal au niveau de la partie supérieure a une forme évasée réalisant une paroi de même épaisseur que celle de la partie inférieure. According to another characteristic, the net also extends over the upper part of the rod and the channel at the level of the upper part has a flared shape producing a wall of the same thickness as that of the lower part.

Suivant une autre caractéristique, les parties en forme de ressort hélicoïdal comportent des spires dont la forme extérieure correspond à une section arrondie formant un filet de vis. According to another characteristic, the parts in the form of a helical spring include turns whose external shape corresponds to a rounded section forming a screw thread.

Ainsi, les spires du ressort ont, non seulement, la fonction de ressort, mais elles constituent en même temps un filet de vis pour la fixation de la prothèse dans le canal fémoral qui aura été préparé, le cas échéant, à l'aide d'un instrument approprié. Thus, the coils of the spring not only have the function of spring, but they also constitute a thread of screws for fixing the prosthesis in the femoral canal which will have been prepared, if necessary, using 'an appropriate instrument.

Suivant une autre caractéristique, l'extré- mité inférieure de la tige est un manchon à bord arrondi. Ce manchon facilite le guidage et l'introduction de la tige dans le canal fémoral sans risque de blocage. Ce manchon est de préférence obturé par un bouchon soudé au manchon et comportant un filetage intérieur permettant de démonter le cas échéant le bouchon. According to another characteristic, the lower end of the rod is a sleeve with a rounded edge. This sleeve facilitates guiding and introducing the rod into the femoral canal without risk of blockage. This sleeve is preferably closed by a plug welded to the sleeve and having an internal thread allowing the plug to be removed if necessary.

Il est à remarquer que la partie de la tige en forme de vis ne s'étend, de préférence, que sur la partie centrale de la tige, l'extrémité inférieure ou distale étant constituée par le manchon et l'extrémité supérieure se terminant par une forme plus ou moins évasée en trompette. Toutefois, la partie filetée se poursuit de préférence au-delà de la partie en ressort hélicoïdal et s'étend sur la partie supérieure de la tige. It should be noted that the part of the rod in the form of a screw preferably extends only over the central part of the rod, the lower or distal end being constituted by the sleeve and the upper end ending in a more or less flared shape in trumpet. However, the threaded part preferably continues beyond the helical spring part and extends over the upper part of the rod.

Suivant une autre caractéristique l'embase est formée de deux parties réunies par une vis, la première partie étant solidaire de l'extrémité supérieure de la tige comprenant une surface d'appui munie de logements dtindexage et d'un cône de centrage et d'assemblage avec un taraudage, la seconde partie se composant d'un chapeau muni d'un organe d'indexage de forme correspondante à celle d'un logement de la première partie de l'embase, d'un logement conique pour recevoir le cône de centrage et d'assemblage et d'un trou pour le passage et la mise en place de la vis d'assemblage ainsi qu'un prolongement recevant la tête de prothèse. According to another characteristic, the base is formed of two parts joined by a screw, the first part being integral with the upper end of the rod comprising a bearing surface provided with indexing housings and with a centering cone and assembly with a tapping, the second part consisting of a cap provided with an indexing member of shape corresponding to that of a housing of the first part of the base, of a conical housing for receiving the cone of centering and assembly and a hole for the passage and the installation of the assembly screw as well as an extension receiving the prosthesis head.

Suivant une variante, la première partie de l'embase est réalisée séparément de la tige puis est solidarisée à celle-ci. According to a variant, the first part of the base is produced separately from the rod and is then secured to the latter.

Cette réalisation de la prothèse en deux parties assemblées par une vis ou moyen de liaison approprié, facilite la mise en place de la prothèse. This realization of the prosthesis in two parts assembled by a screw or appropriate connecting means, facilitates the establishment of the prosthesis.

En effet, le chirurgien visse la tige dans le canal fémoral de manière que celle-ci soit bien accrochée à l'os, et cela sans avoir à se préoccuper de 1' orienta- tion de l'embase recevant la tête de prothèse. Le vissage de la tige se fait à l'aide d'un outil qui se fixe à l'extrémité supérieure de la tige. Lorsque la tige est bien en place, le chirurgien positionne l'embase en choisissant l'orientation appropriée, orientation qui est bloquée par la coopération de l'organe d'indexage dans le logement d'indexage correspondant. Lorsque la mise en place est faite, il solidarise l'ensemble à l'aide d'une vis. Puis il met en place la tête de prothèse.In fact, the surgeon screws the rod into the femoral canal so that it is firmly attached to the bone, without having to worry about the orientation of the base receiving the prosthesis head. The rod is screwed using a tool that attaches to the upper end of the rod. When the rod is in place, the surgeon positions the base by choosing the appropriate orientation, orientation which is blocked by the cooperation of the indexing member in the corresponding indexing housing. When the installation is done, it secures the assembly using a screw. Then he sets up the prosthesis head.

L'invention concerne également un procédé de fabrication d'une prothèse telle que définie cidessus, ce procédé étant caractérisé en ce qu'on réalise une tige creuse avec un pas de vis à section de filet arrondi, sur au moins la partie de la tige correspondant à la forme du ressort hélicoïdal, on sépare les spires en coupant les spires au fond de gorge usinée entre deux spires, le découpage se faisant à l'aide d'un faisceau laser. The invention also relates to a method of manufacturing a prosthesis as defined above, this method being characterized in that a hollow rod is produced with a thread pitch with a rounded thread section, on at least the part of the rod corresponding to the shape of the helical spring, the turns are separated by cutting the turns at the bottom of the groove machined between two turns, the cutting being done using a laser beam.

Ce procédé de fabrication convient,- en particulier pour réaliser, ce qui est indispensable, une tige constituée au moins partiellement par un ressort hélicoïdal dont les spires sont jointives. This manufacturing process is suitable, - in particular for producing, which is essential, a rod formed at least partially by a helical spring whose turns are contiguous.

La présente invention sera décrite de manière plus détaillée à l'aide des dessins annexés, dans lesquels - la figure 1 est une vue d'ensemble d'une prothèse de
hanche selon l'invention, non équipée de la tête de
prothèse, - la figure 2 est une vue en coupe à échelle agrandie
de la tige de la prothèse de la figure 1, selon un
premier mode de réalisation, - la figure 3 est une vue de détail très agrandie de
deux spires de la tige 2, - la figure 4 est une vue de l'extrémité supérieure de
la tige constituant la première partie de l'embase, - la figure 5 est une vue en coupe de la seconde
partie de l'embase, - la figure 6 est une vue en plan, partiellement
coupée par un plan horizontal, de la première partie
de l'embase selon la figure 4, - la figure 7 est une vue de dessous de la seconde
partie de l'embase selon la figure 5, - la figure 8 montre la vis d'assemblage de l'embase.The present invention will be described in more detail with the aid of the accompanying drawings, in which - Figure 1 is an overview of a prosthesis
hip according to the invention, not equipped with the head
prosthesis, - Figure 2 is a sectional view on an enlarged scale
of the stem of the prosthesis of FIG. 1, according to a
first embodiment, - Figure 3 is a very enlarged detail view of
two turns of the rod 2, - Figure 4 is a view of the upper end of
the rod constituting the first part of the base, - Figure 5 is a sectional view of the second
part of the base, - Figure 6 is a plan view, partially
cut by a horizontal plane, from the first part
of the base according to Figure 4, - Figure 7 is a bottom view of the second
part of the base according to Figure 5, - Figure 8 shows the base assembly screw.

- la figure 9 est une vue en coupe d'un autre mode de
réalisation de la tige d'une prothèse selon l'inven
tion.- Figure 9 is a sectional view of another mode of
realization of the stem of a prosthesis according to the invention
tion.

Selon la figure 1, la prothèse de hanche de l'invention se compose d'une tige 1 destinée à être logée dans le canal fémoral ainsi que d'une embase 2 portant la tête de prothèse non représentée. According to Figure 1, the hip prosthesis of the invention consists of a rod 1 intended to be housed in the femoral canal as well as a base 2 carrying the prosthesis head not shown.

Selon la figure 2, la tige 1 est constituée sur une fraction importante de sa longueur par un ressort hélicoïdal 11 se terminant à l'extrémité inférieur par un manchon 12 dont le bord libre 13 est arrondi ; à son extrémité supérieure, la tige comporte une partie évasée 14 non en forme de ressort hélicoïdal et elle se termine par la première partie 3- de l'embase 2 qui sera décrite ci-après à l'aide des figures 4 et 5. According to Figure 2, the rod 1 is formed over a significant fraction of its length by a helical spring 11 terminating at the lower end by a sleeve 12 whose free edge 13 is rounded; at its upper end, the rod has a flared part 14 not in the form of a helical spring and it ends in the first part 3- of the base 2 which will be described below with the aid of FIGS. 4 and 5.

L'intérieur de la tige est traversée par un canal 15 et extérieurement, la tige est munie d'un filetage 16 commençant après le manchon 12 et se poursuivant sur la partie évasée-ou en trompette 14. The interior of the rod is crossed by a channel 15 and externally, the rod is provided with a thread 16 starting after the sleeve 12 and continuing on the flared part - or in a trumpet 14.

Dans la partie 11 du ressort hélicoïdal, le filetage 16 correspond aux spires du ressort hélicoïdal alors que, dans la partie 14, le filet est réalisé dans la masse.In part 11 of the helical spring, the thread 16 corresponds to the turns of the helical spring whereas, in part 14, the thread is produced in the mass.

Selon un premier mode de réalisation, lorsque la prothèse est en titane, on fabrique d'abord l'ébauche de prothèse puis on taille le filet 16 de manière à former les gorges 17 (voir figure 3) entre les spires du filet 16, de façon à enlever de la matière et à réduire l'épaisseur qu'il faut traverser pour séparer les spires. According to a first embodiment, when the prosthesis is made of titanium, the prosthesis blank is first manufactured and then the net 16 is cut so as to form the grooves 17 (see FIG. 3) between the turns of the net 16, so as to remove material and reduce the thickness that must be crossed to separate the turns.

La séparation des spires se fait comme indiqué à la figure 3 par un faisceau laser. Cette technique a l'avantage de permettre la réalisation de spires quasi jointives évitant toute réhabilitation de l'intervalle 18 entre deux spires par l'os. The separation of the turns is done as indicated in FIG. 3 by a laser beam. This technique has the advantage of allowing the realization of almost contiguous turns avoiding any rehabilitation of the interval 18 between two turns by the bone.

L'embase 2 telle que représentée aux figures 5 à 7, se compose de deux parties, à savoir une premitre partie 3 réalisée à l'extrémité supérieure de la tige 1 et d'une seconde partie 4 venant s'assembler sur la première partie 3 pour y être solidarisée à l'aide de la vis 5 (figure 8). The base 2 as shown in Figures 5 to 7, consists of two parts, namely a first part 3 made at the upper end of the rod 1 and a second part 4 coming to assemble on the first part 3 to be secured therein using the screw 5 (FIG. 8).

La premier partie 3 représentée schématiquement à la figure 4 (le filet 16 n'a pas été tracé) comprend une surface d'appui 31 munie de logements d'indexage 32 et d'un cône de centrage 33 avec un taraudage 34 pour la vis 5. The first part 3 shown diagrammatically in FIG. 4 (the thread 16 has not been traced) comprises a bearing surface 31 provided with indexing housings 32 and a centering cone 33 with a tapping 34 for the screw 5.

L'ensemble formé par la surface d'appui 31 et le cône 33 est symétrique en rotation. The assembly formed by the bearing surface 31 and the cone 33 is rotationally symmetrical.

La seconde partie 4 de l'embase se compose d'un chapeau 41 portant une branche 42 dont l'extrémité 42A reçoit la tête de prothèse non représentée. Le chapeau 41 est muni d'un organe d'indexage 43 dont la forme correspond à la forme des logements 32 de manière que cet organe d'indexage 43 puisse se placer dans l'un des logements d'indexage 32 et bloquer la rotation relative de la partie 4 par rapport à la partie 3 et ainsi par rapport à la tige. The second part 4 of the base consists of a cap 41 carrying a branch 42 whose end 42A receives the prosthesis head not shown. The cap 41 is provided with an indexing member 43 whose shape corresponds to the shape of the housings 32 so that this indexing member 43 can be placed in one of the indexing housings 32 and block the relative rotation of part 4 with respect to part 3 and thus with respect to the rod.

Le chapeau 41 est également muni d'un logement conique 44 dont la conicité correspond à celle du cône de centrage 33 prolongé par un orifice 45 pour le passage de la vis. Cet orifice se termine par une partie tronconique 36. Enfin, le chapeau est muni d'une patte 47 avec des orifices 47A pour l'accrochage éventuel de tendons. The cap 41 is also provided with a conical housing 44 whose conicity corresponds to that of the centering cone 33 extended by an orifice 45 for the passage of the screw. This orifice ends in a frustoconical part 36. Finally, the cap is provided with a lug 47 with orifices 47A for the possible attachment of tendons.

La vue de dessus représentée à la figure 6, vue partiellement coupée au niveau des logements d'indexage 32, montre ces logements d'indexage 32 ainsi que le taraudage 34. The top view shown in FIG. 6, a partially cut view at the level of the indexing housings 32, shows these indexing housings 32 as well as the internal thread 34.

La figure 7 qui est une vue de dessous montre plus particulièrement la forme de la seconde partie de l'embase. Figure 7 which is a bottom view shows more particularly the shape of the second part of the base.

La vis 5 représentée à la figure 8, comprend une partie inférieure 51 filetée, une collerette tronconique 52 destinée à venir s'appuyer dans le logement tronconique 46 de la partie 4 et enfin d'une tête hexagonale 53 pour la clé de vissage. The screw 5 shown in Figure 8, comprises a threaded lower part 51, a frustoconical flange 52 intended to come to bear in the frustoconical housing 46 of part 4 and finally a hexagonal head 53 for the screwing wrench.

La variante de réalisation représentée à la figure 9 ne concerne que la tige, les autres parties de la prothèse étant les mêmes. Dans la description de cette variante, on utilisera les mêmes références qu aux figures 1 et 2, augmentées de 100 pour désigner les éléments identiques ou semblables. Ainsi, la tige 101 se termine par un manchon 112 dans lequel est logé un bouchon 180 muni intérieurement d'un filetage 181 de démontage. Ce bouchon 180 est soudé au bord 113 du manchon 112 par une soudure 182 réalisée par un bombardement par un faisceau d'électrons. The variant embodiment shown in FIG. 9 only concerns the rod, the other parts of the prosthesis being the same. In the description of this variant, the same references will be used as in Figures 1 and 2, increased by 100 to designate identical or similar elements. Thus, the rod 101 ends with a sleeve 112 in which is housed a plug 180 provided internally with a thread 181 for disassembly. This plug 180 is welded to the edge 113 of the sleeve 112 by a weld 182 produced by bombardment with an electron beam.

La partie 111 de la tige, en forme de ressort hélicoïdal est prolongée par la partie 114 également en forme de ressort hélicoïdal. Le canal 115 de section sensiblement constante dans la partie 111, se prolonge au niveau de la partie 114 par une section lISA allant en s'évasant de manière à former une paroi de section constante permettant de réaliser le filet 116A hélicoïdal, prolongeant le filet 116 sur la partie 114. Cela permet de donner à l'ensemble de la tige 101 la souplesse requise. The part 111 of the rod, in the form of a helical spring is extended by the part 114 also in the form of a helical spring. The channel 115 of substantially constant section in the part 111, is extended at the level of the part 114 by an ISA section which widens so as to form a wall of constant section making it possible to produce the helical thread 116A, extending the thread 116 on part 114. This makes it possible to give the entire rod 101 the required flexibility.

Pour réaliser le canal évasé 115A, il faut que la partie 103 de l'embase (2 selon les figures 1 et 2) soit une pièce fabriqué#e séparément et qui est soudée au bord supérieur de la partie 115A par une soudure 190 réalisée par un bombardement par un faisceau d'électrons. To make the flared channel 115A, the part 103 of the base (2 according to FIGS. 1 and 2) must be a part made separately and which is welded to the upper edge of the part 115A by a weld 190 produced by bombardment with an electron beam.

De manière générale, le filet 116, 116A se taille comme dans le premier exemple décrit ci-dessus. In general, the thread 116, 116A is cut as in the first example described above.

La prothèse telle que décrite suivant deux exemples de réalisation ci-dessus, se met en place très schématiquement comme suit
Après avoir préparé le canal fémoral en y taillant, éventuellement, un filetage à l'aide d'un instrument approprié, le chirurgien visse la tige 1 en fixant à son extrémité supérieure un outil de préhension (non représenté). Lorsque la tige 1 est vissée, il met en place la deuxième partie 4 de l'embase suivant l'angle approprié. Cette orientation se bloque puisque l'organe d'indexage 43 est placé dans le logement 32 correspondant à cette orientation. Lorsque cette mise en place est faite, il solidarise l'embase en vissant la vis 5. The prosthesis as described according to two exemplary embodiments above, is put in place very schematically as follows
After having prepared the femoral canal by cutting, if necessary, a thread using an appropriate instrument, the surgeon screws the rod 1 by fixing a gripping tool (not shown) at its upper end. When the rod 1 is screwed, it sets up the second part 4 of the base at the appropriate angle. This orientation is blocked since the indexing member 43 is placed in the housing 32 corresponding to this orientation. When this installation is made, it secures the base by screwing the screw 5.

Claims (2)

REVENDICATIONS 1 ) Prothèse de hanche comprenant une tige (1, 101) destinée à être logée dans le canal fémoral, une embase (2) avec une branche (42, 42A) portant la tête de prothèse, prothèse de hanche caractérisée en ce que la tige (1, 101) est constituée, au moins partiellement (11, 111, 114), d'un ressort hélicoïdal (16, 116, 116A).  1) Hip prosthesis comprising a rod (1, 101) intended to be housed in the femoral canal, a base (2) with a branch (42, 42A) carrying the prosthesis head, hip prosthesis characterized in that the rod (1, 101) consists, at least partially (11, 111, 114), of a helical spring (16, 116, 116A). 2-) Prothèse de hanche selon la revendication 1, caractérisée en ce que les spires (16, 116, 116A) de la partie en forme de ressort hélicoïdal (11, 111, 114) sont jointives. 2-) hip prosthesis according to claim 1, characterized in that the turns (16, 116, 116A) of the part in the form of a helical spring (11, 111, 114) are contiguous. 3v) Prothèse de hanche selon la revendication 1, caractérisée en ce qu'elle est réalisée en titane. 3v) hip prosthesis according to claim 1, characterized in that it is made of titanium. 4 ) Prothèse de hanche selon la revendication 1, caractérisée en ce que la tige (1, 101) est creuse (canal 15, 115, 115A) et la partie (11, 111, 114) en forme de ressort hélicoïdal est découpée dans la masse. 4) hip prosthesis according to claim 1, characterized in that the rod (1, 101) is hollow (channel 15, 115, 115A) and the part (11, 111, 114) in the form of a helical spring is cut in the mass. 5 ) Prothèse de hanche selon la revendication 4, caractérisée en ce que le filet (116, 116A) s 'étend également sur la partie supérieure (114) de la tige (101) et le canal (115A) au niveau de la partie supérieure (114) a une forme évasée réalisant une paroi de même épaisseur que celle de la partie inférieure (111). 5) hip prosthesis according to claim 4, characterized in that the net (116, 116A) also extends over the upper part (114) of the rod (101) and the channel (115A) at the upper part (114) has a flared shape producing a wall of the same thickness as that of the lower part (111). 6e) Prothèse de hanche selon les revendications 1 et 5, caractérisée en ce que les parties (11, 111, 114) en forme de ressort hélicoïdal comportent des spires (16, 116, 116A) dont la forme extérieure correspond à une section arrondie formant un filet de vis. 6e) hip prosthesis according to claims 1 and 5, characterized in that the parts (11, 111, 114) in the form of a helical spring include turns (16, 116, 116A) whose external shape corresponds to a rounded section forming a screw thread. 7-) Prothèse de hanche selon la revendication 1, caractérisée en ce que l'extrémité inférieure de la tige (1, 101) est un manchon (12, 112) à bord arrondi (13, 113). 7-) Hip prosthesis according to claim 1, characterized in that the lower end of the rod (1, 101) is a sleeve (12, 112) with rounded edge (13, 113). 8 ) Prothèse de hanche selon la revendication 7, caractérisée en ce que le manchon (112) est muni d'un bouchon (180) soudé (182) au manchon. 8) Hip prosthesis according to claim 7, characterized in that the sleeve (112) is provided with a plug (180) welded (182) to the sleeve. 9 ) Prothèse de hanche selon les revendications 1 et 5, caractérisée en ce que l'embase (2) est formée de deux parties (3, 103, 4) réunies par une vis (5), la première partie (3, 103), solidaire de l'extrémité supérieure de la tige (1, 101) comprenant une surface d'appui (31) munie de logements d'indexage et d'un cône de centrage et d'assemblage (33) avec un taraudage (34), la seconde partie (4) se composant d'un chapeau (41) muni d'un organe d'indexage (43) de forme correspondante à celle d'un logement (32) de la première partie (3) de l'embase, d'un logement conique (44) pour recevoir le cône de centrage et d'assemblage (33) et d'un trou (45, 46) pour le passage et la mise en place de la vis d'assemblage (5) ainsi qu'un prolongement (42, 42A) recevant la tête de prothèse. 9) hip prosthesis according to claims 1 and 5, characterized in that the base (2) is formed by two parts (3, 103, 4) joined by a screw (5), the first part (3, 103) , integral with the upper end of the rod (1, 101) comprising a bearing surface (31) provided with indexing housings and a centering and assembly cone (33) with a tapping (34) , the second part (4) consisting of a cap (41) provided with an indexing member (43) of shape corresponding to that of a housing (32) of the first part (3) of the base , a conical housing (44) to receive the centering and assembly cone (33) and a hole (45, 46) for the passage and the establishment of the assembly screw (5) as well an extension (42, 42A) receiving the prosthesis head. 10 ) Prothèse selon la revendication 9, caractérisée en ce que la première partie (103) de l'embase est réalisée séparément de la tige (101) puis est solidarisée (190) à celle-ci (101). 10) Prosthesis according to claim 9, characterized in that the first part (103) of the base is produced separately from the rod (101) and is then secured (190) to the latter (101). 11-) Prothèse selon la revendication 9, caractérisée en ce qu'elle comprend une vis d'assemblage des deux parties (3, 4) de l'embase (2), vis (5) composée d'une partie filetée (51) terminée par une collerette tronconique (52) et une tête hexagonale (53). 11-) Prosthesis according to claim 9, characterized in that it comprises a screw for assembling the two parts (3, 4) of the base (2), screw (5) composed of a threaded part (51) terminated by a frustoconical collar (52) and a hexagonal head (53). 12*) Procédé de fabrication d'une prothèse de hanche selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'on réalise une tige creuse (1, 101) avec un pas de vis à section de filet (16, 116) arrondi, sur au moins la partie (11, 111, 114) de la tige correspondant à la forme du ressort-hélicoïda#l, on sépare les spires en coupant les spires au fond de la gorge (17) usinée entre deux spires, le découpage se faisant à l'aide d'un faisceau laser.  12 *) A method of manufacturing a hip prosthesis according to any one of claims 1 to 11, characterized in that a hollow rod (1, 101) is produced with a thread section screw thread (16, 116) rounded, on at least the part (11, 111, 114) of the rod corresponding to the shape of the helical spring # l, the turns are separated by cutting the turns at the bottom of the groove (17) machined between two turns , the cutting being done using a laser beam.

FR8809869A 1988-07-21 1988-07-21 Hip prosthesis and method for manufacturing such a prosthesis Pending FR2634371A1 (en)

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WO1994018911A1 (en) * 1993-02-18 1994-09-01 Peter Schawalder Shaft component for a joint endoprosthesis
FR2763501A1 (en) * 1997-05-26 1998-11-27 Groupe Lepine Shoulder prosthesis assembly
US5961555A (en) 1998-03-17 1999-10-05 Huebner; Randall J. Modular shoulder prosthesis
FR2799117A1 (en) * 1999-09-30 2001-04-06 Marc Andre Cahlik Bone cavity plug comprises spiral of resorbable biocompatible material capable of radial expansion e.g. to support cement used with implant
EP1101460A1 (en) * 1999-11-17 2001-05-23 CITIEFFE S.r.l. Hip endoprosthesis
WO2001064139A3 (en) * 2000-02-29 2002-02-07 Hammill Mfg Co Joint prosthesis having variable flexibility
US6494913B1 (en) 1998-03-17 2002-12-17 Acumed, Inc. Shoulder prosthesis
WO2004028413A1 (en) * 2002-09-30 2004-04-08 Walter Ramseier Femoral component for a hip prosthesis
WO2005039454A2 (en) 2003-10-17 2005-05-06 Biedermann Motech Gmbh Flexible implant
FR2879917A1 (en) * 2004-12-23 2006-06-30 Genie Medical Sgm Sa Soc D Femoral assembly for hip prosthesis, has modular epiphysis placed angularly relative to stem to receive `medium collar` type femoral head in monoblock manner, and having, at slot, female conical bearing cooperating with male conical bearing
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WO2010045116A1 (en) * 2008-10-14 2010-04-22 Zimmer, Inc. Modular intramedullary nail
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CN1870952B (en) * 2003-10-17 2012-07-18 比德曼莫泰赫有限公司 Flexible implant
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CN113081401A (en) * 2019-12-23 2021-07-09 澳特拉斯(北京)科技有限公司 Flexible hip joint handle and flexible hip joint prosthesis adopting same

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WO1994018911A1 (en) * 1993-02-18 1994-09-01 Peter Schawalder Shaft component for a joint endoprosthesis
US5702479A (en) * 1993-02-18 1997-12-30 Schawalder; Peter Shaft component for a joint endoprosthesis
FR2763501A1 (en) * 1997-05-26 1998-11-27 Groupe Lepine Shoulder prosthesis assembly
US6168627B1 (en) 1998-03-17 2001-01-02 Acumed, Inc. Shoulder prosthesis
US6102953A (en) 1998-03-17 2000-08-15 Acumed, Inc. Shoulder prosthesis
US6168628B1 (en) 1998-03-17 2001-01-02 Acumed, Inc. Shoulder Prosthesis
US7918892B2 (en) 1998-03-17 2011-04-05 Acumed Llc Shoulder prosthesis
US6193758B1 (en) 1998-03-17 2001-02-27 Acumed, Inc. Shoulder prosthesis
US6494913B1 (en) 1998-03-17 2002-12-17 Acumed, Inc. Shoulder prosthesis
US5961555A (en) 1998-03-17 1999-10-05 Huebner; Randall J. Modular shoulder prosthesis
FR2799117A1 (en) * 1999-09-30 2001-04-06 Marc Andre Cahlik Bone cavity plug comprises spiral of resorbable biocompatible material capable of radial expansion e.g. to support cement used with implant
EP1101460A1 (en) * 1999-11-17 2001-05-23 CITIEFFE S.r.l. Hip endoprosthesis
WO2001064139A3 (en) * 2000-02-29 2002-02-07 Hammill Mfg Co Joint prosthesis having variable flexibility
WO2004028413A1 (en) * 2002-09-30 2004-04-08 Walter Ramseier Femoral component for a hip prosthesis
US8721690B2 (en) 2003-10-17 2014-05-13 Biedermann Technologies GmbH & Co., KG Rod-shaped implant element with flexible section
WO2005039454A3 (en) * 2003-10-17 2005-07-21 Biedermann Motech Gmbh Flexible implant
US7621912B2 (en) 2003-10-17 2009-11-24 Biedermann Motech Gmbh Rod-shaped implant element with flexible section
US9326794B2 (en) 2003-10-17 2016-05-03 Biedermann Technologies Gmbh & Co. Kg Rod-shaped implant element with flexible section
WO2005039454A2 (en) 2003-10-17 2005-05-06 Biedermann Motech Gmbh Flexible implant
CN1870952B (en) * 2003-10-17 2012-07-18 比德曼莫泰赫有限公司 Flexible implant
KR101012215B1 (en) * 2003-10-17 2011-02-08 비이더만 모테크 게엠베하 Soft implant
US8632570B2 (en) 2003-11-07 2014-01-21 Biedermann Technologies Gmbh & Co. Kg Stabilization device for bones comprising a spring element and manufacturing method for said spring element
US9345520B2 (en) 2003-11-07 2016-05-24 Biedermann Technologies Gmbh & Co. Kg Stabilization device for bones comprising a spring element and manufacturing method for said spring element
US8771357B2 (en) 2004-05-04 2014-07-08 Biedermann Technologies Gmbh & Co. Kg Flexible space holder
FR2879917A1 (en) * 2004-12-23 2006-06-30 Genie Medical Sgm Sa Soc D Femoral assembly for hip prosthesis, has modular epiphysis placed angularly relative to stem to receive `medium collar` type femoral head in monoblock manner, and having, at slot, female conical bearing cooperating with male conical bearing
US7785371B2 (en) 2006-11-13 2010-08-31 Howmedica Osteonics Corp. Modular humeral head
US7785370B2 (en) 2006-11-13 2010-08-31 Howmedica Osteonics Corp. Modular humeral head
US8043333B2 (en) 2007-06-08 2011-10-25 Synthes Usa, Llc Dynamic stabilization system
US9414875B2 (en) 2007-12-17 2016-08-16 DePuy Synthes Products, Inc. Dynamic bone fixation element and method of using the same
US8690931B2 (en) 2007-12-17 2014-04-08 DePuy Synthes Products, LLC Dynamic bone fixation element and method of using the same
US8114141B2 (en) 2007-12-17 2012-02-14 Synthes Usa, Llc Dynamic bone fixation element and method of using the same
WO2010045116A1 (en) * 2008-10-14 2010-04-22 Zimmer, Inc. Modular intramedullary nail
US9339316B2 (en) 2012-03-13 2016-05-17 DePuy Synthes Products, Inc. Dynamic bone fixation element
US9827029B2 (en) 2012-03-13 2017-11-28 DePuy Synthes Products, Inc. Dynamic bone fixation element
CN113081401A (en) * 2019-12-23 2021-07-09 澳特拉斯(北京)科技有限公司 Flexible hip joint handle and flexible hip joint prosthesis adopting same
EP4079262A4 (en) * 2019-12-23 2023-02-01 Hongwen Zhu Flexible hip joint stem and hip joint prosthesis using same
JP2023507042A (en) * 2019-12-23 2023-02-20 朱紅文 FLEXIBLE HIP STEM AND FLEXIBLE HIP PROSTHESIS USING THE SAME

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