FR2875397A1 - Femoral rod for hip prosthesis, has diaphyseal part successively presenting on its entire length, two conical spans, and cylindrical span of different lengths to adapt and block part simultaneously in femoral isthmus - Google Patents

Femoral rod for hip prosthesis, has diaphyseal part successively presenting on its entire length, two conical spans, and cylindrical span of different lengths to adapt and block part simultaneously in femoral isthmus Download PDF

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Publication number
FR2875397A1
FR2875397A1 FR0452133A FR0452133A FR2875397A1 FR 2875397 A1 FR2875397 A1 FR 2875397A1 FR 0452133 A FR0452133 A FR 0452133A FR 0452133 A FR0452133 A FR 0452133A FR 2875397 A1 FR2875397 A1 FR 2875397A1
Authority
FR
France
Prior art keywords
length
femoral
rod according
diaphyseal
isthmus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR0452133A
Other languages
French (fr)
Other versions
FR2875397B1 (en
Inventor
Charles Galy
Damien Laques
Jean Yves Picot
Emmanuel Baulot
Hugues Henri Dubois
Michel Colombier
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.)
Charles Galy Fr
Damien Laques Fr
Emmanuel Baulot Fr
Hugues Henri Dubois Fr
Jean Yves Picot Fr
Aston Medical SAS
Original Assignee
Genie Medical Sgm SA Ste
Genie Medical Sgm SA Soc D
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 Genie Medical Sgm SA Ste, Genie Medical Sgm SA Soc D filed Critical Genie Medical Sgm SA Ste
Priority to FR0452133A priority Critical patent/FR2875397B1/en
Publication of FR2875397A1 publication Critical patent/FR2875397A1/en
Application granted granted Critical
Publication of FR2875397B1 publication Critical patent/FR2875397B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3672—Intermediate parts of shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30136—Rounded shapes, e.g. with rounded corners undulated or wavy, e.g. serpentine-shaped or zigzag-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30143—Convex polygonal shapes hexagonal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30171—Concave polygonal shapes rosette- or star-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—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
    • A61F2002/30224—Three-dimensional shapes cylindrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
    • 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
    • A61F2002/3069—Revision 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
    • A61F2/30767—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
    • A61F2002/3082—Grooves
    • A61F2002/30827—Plurality of grooves
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • 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
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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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    • A61F2002/3678—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
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    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • 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
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    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/005—Rosette-shaped, e.g. star-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
    • A61F2230/0067—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
    • A61F2230/0069—Three-dimensional shapes cylindrical

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

The rod has an epiphyseal part (A) with a neck (C) to receive a head of the femur and a diaphyseal part (B). The part (B) successively presents on its entire length, from lower end of the part (A) till the distal end, a conical span (1) of length (x1), a cylindrical span (2) of length (x2) and a conical span (3) of length (x3), to adapt and block the part (B) simultaneously in the femoral isthmus.

Description

L'invention se rattache au secteur des implants orthopédiques et plusThe invention relates to the sector of orthopedic implants and more

particulièrement des tiges fémorales de reprise.  especially femoral stems of recovery.

L'homme de métier sait parfaitement qu'en cas d'altération de la fixation d'une tige fémorale ou en cas de fracture du fémur sur prothèse, il est nécessaire de remplacer la tige d'origine par un modèle de longueur plus importante afin d'avoir un appui distal suffisant en zone saine.  The person skilled in the art knows perfectly well that in case of alteration of the fixation of a femoral stem or in case of fracture of the femur on a prosthesis, it is necessary to replace the original stem with a model of greater length so to have sufficient distal support in a healthy zone.

Selon le stade de dégradation ou le niveau de fracture, la longueur de la tige de reprise et son principe de fixation dans le fémur varient.  Depending on the stage of degradation or level of fracture, the length of the recovery rod and its principle of fixation in the femur vary.

Comme pour une tige de première intention, la fixation peut être cimentée ou sans ciment.  As for a first-line rod, the fastener can be cemented or cementless.

On distingue schématiquement deux types de tiges de reprise non cimentée: la tige à courbure anatomique distale verrouillable par vis et la tige droite impactée.  Two types of uncemented resumption rods are schematically distinguished: the distally anatomically curved, screw-lockable stem and the impacted right stem.

L'invention se rapporte à ce dernier type de prothèse.  The invention relates to the latter type of prosthesis.

Les prothèses droites impactées, connues sur le marché, présentent une diaphyse cylindrique ou légèrement conique.  Impacted straight prostheses, known on the market, have a cylindrical or slightly conical diaphysis.

Leur introduction est préparée par un alésoir de même forme qui permet de rendre rectiligne un fémur naturellement courbé dans le plan antéropostérieur.  Their introduction is prepared by a reamer of the same shape which makes it rectilinear a femur naturally curved in the anteroposterior plane.

L'adaptation d'une géométrie prothétique à une géométrie osseuse préformée de façon identique, peut entraîner des instabilités axiales ou rotatoires de la tige sous charge.  The adaptation of a prosthetic geometry to an identically preformed bone geometry can lead to axial or rotational instabilities of the underloaded rod.

Le problème que se propose de résoudre l'invention est de pallier les insuffisances de stabilité des tiges droites impactées par une géométrie variable et autobloquante dans la partie médiane du fémur en général préservée ou partiellement préservée de la destruction épiphysaire, appelée l'isthme fémoral.  The problem to be solved by the invention is to overcome the stability deficiencies of the straight stems impacted by a variable and self-locking geometry in the median part of the femur generally preserved or partially preserved from the epiphyseal destruction, called the femoral isthmus.

Cet isthme, très sensiblement cylindrique, constitue le couloir le plus étroit du fémur.  This isthmus, very substantially cylindrical, is the narrowest corridor of the femur.

Les tiges de première intention ont en général une longueur limitée audessus de l'isthme pour éviter le contact étroit péjoratif de leur extrémité contre les corticales.  First-line stems usually have a limited length above the isthmus to avoid the pejorative close contact of their extremities against cortices.

La destruction osseuse, ou le volet réalisé lors de la reprise pour enlever la tige initiale, s'arrête donc, dans la majorité des cas, audessus de l'isthme.  The bone destruction, or the flap made during the recovery to remove the initial stem, therefore stops, in most cases, above the isthmus.

La destruction complète de cet isthme fémoral, qui peut s'observer dans des stades avancés de reprise, constitue par conséquent une contreindication à ce type de prothèse.  The complete destruction of this femoral isthmus, which can be observed in advanced stages of recovery, is therefore a contraindication to this type of prosthesis.

Pour résoudre le problème posé, il a été conçu une tige fémorale de reprise pour prothèse de hanche présentant, d'une manière connue, une partie épiphysaire avec un col apte à recevoir une tête fémorale et une partie diaphysaire.  To solve the problem, it was designed a hip prosthesis revision femoral stem having, in known manner, an epiphyseal part with a neck adapted to receive a femoral head and a diaphyseal portion.

Selon l'invention, compte tenu du problème à résoudre, la partie diaphysaire présente successivement, sur la totalité de sa longueur: une portée conique de longueur x 1, une portée cylindrique de longueur x 2, une portée conique de longueur x 3, afin de s'adapter et de se bloquer simultanément dans l'isthme fémoral et son prolongement diaphysaire.  According to the invention, in view of the problem to be solved, the diaphyseal portion has successively, over its entire length: a conical bearing length x 1, a cylindrical bearing length x 2, a conical bearing length x 3, so to adapt and hang simultaneously in the femoral isthmus and its diaphyseal extension.

Ce choix de géométrie diaphysaire est basé sur le paramétrage de l'isthme fémoral qui constitue le repère dimensionnel pour le choix de la taille de diaphyse du fait de son diamètre constant sur une certaine longueur.  This choice of diaphyseal geometry is based on the parameterization of the femoral isthmus which constitutes the dimensional reference for the choice of diaphysis size because of its constant diameter over a certain length.

Selon des données anatomiques, le diamètre de cet isthme varie, selon les individus, de 9 à 18 mm et est constant sur une longueur de 30 à 40 mm indépendante du diamètre. L'isthme se situe à une hauteur variable du fût fémoral selon les individus, hauteur corrélée à son diamètre, comprise entre 120 mm et 230 mm du centre de la tête fémorale.  According to anatomical data, the diameter of this isthmus varies, according to the individuals, from 9 to 18 mm and is constant over a length of 30 to 40 mm independent of the diameter. The isthmus is located at a variable height of the femoral shaft according to individuals, height correlated to its diameter, between 120 mm and 230 mm from the center of the femoral head.

La portée cylindrique de la diaphyse prothétique, d'une longueur x 2, est destinée à s'inscrire dans l'isthme fémoral en ajustement taille pour taille ou légèrement surdimensionnée, par rapport au diamètre de l'alésage cylindrique préalable.  The cylindrical bearing of the prosthetic diaphysis, of a length x 2, is intended to fit into the femoral isthmus in size-for-size or slightly oversize fit, relative to the diameter of the prior cylindrical bore.

La portée conique sus-jacente est de conicité comprise entre 2 et 7 , pour être adaptée à la conicité moyenne du fémur au-dessus de l'isthme. Elle se situe dans la zone susceptible d'être entamée par la destruction ayant mené à la reprise.  The overlying conical bearing is of conicity between 2 and 7, to be adapted to the average taper of the femur above the isthmus. It is located in the area likely to be damaged by the destruction that led to the recovery.

A défaut d'assurer la stabilité de la tige par appui réel contre l'os, cette portée conique permet d'éviter l'enfoncement de la tige sous charge par le blocage du cône à l'entrée de l'isthme à hauteur HI. La longueur x1 est déterminée telle que x1 = HI - xA, formule dans laquelle XA correspond à la longueur de la partie épiphysaire.  In the absence of ensuring the stability of the rod by actual support against the bone, this conical bearing makes it possible to prevent the sinking of the rod under load by blocking the cone at the entrance of the isthmus at height HI. The length x1 is determined such that x1 = HI - xA, wherein XA is the length of the epiphyseal portion.

La portée conique sous-jacente à la portée cylindrique est de conicité comprise entre 1 et 2 et s'inscrit dans le prolongement diaphysaire de l'isthme, s'élargissant jusqu'aux condyles du genou.  The conical scope underlying the cylindrical scope is of conicity between 1 and 2 and is part of the diaphyseal extension of the isthmus, widening to the condyles of the knee.

Sa faible conicité lui assure un rôle de guidage, ses contacts osseux variant avec le degré de courbure du fémur inférieur.  Its low taper provides a guiding role, its bone contacts varying with the degree of curvature of the lower femur.

Sa longueur x3 est déterminée en fonction de la longueur totale requise x de la prothèse telle que x3 = X - xA - xl - X2.  Its length x3 is determined according to the total required length x of the prosthesis such that x3 = X - xA - x1 - X2.

Pour résoudre le problème d'améliorer spécifiquement la stabilité 5 rotatoire de la diaphyse, la diaphyse présente un rainurage longitudinal.  To solve the problem of specifically improving the rotational stability of the diaphysis, the diaphysis has a longitudinal groove.

Pour résoudre le problème de compléter si nécessaire la stabilité globale de la tige dans les stades avancés de reprise, la portée cylindrique présente au moins un trou de passage pour l'engagement d'une vis optionnelle de verrouillage.  To solve the problem of supplementing if necessary overall stability of the rod in the advanced stages of recovery, the cylindrical seat has at least one through hole for the engagement of an optional locking screw.

L'invention est exposée ci-après plus en détail à l'aide des figures des dessins annexés dans lesquels: la figure 1 est une vue de face à caractère schématique de la tige 15 fémorale de reprise, selon les caractéristiques de l'invention, implantée dans le canal médullaire du fémur; - les figures 2, 3, 4 et 5 sont des vues en coupe transversale considérées respectivement selon la ligne P-P, Q-Q, R-R, S-S de la figure 1.  The invention is described below in more detail with reference to the figures of the accompanying drawings, in which: FIG. 1 is a diagrammatic front view of the femoral resumption rod, according to the features of the invention; implanted in the medullary canal of the femur; FIGS. 2, 3, 4 and 5 are cross-sectional views respectively taken along the line P-P, Q-Q, R-R, S-S of FIG.

La tige fémorale de reprise présente une partie épiphysaire (A) et une partie diaphysaire (B). La partie épiphysaire (A) présente un col (C) apte à recevoir une tête fémorale coopérant, par exemple, avec un implant cotyloïdien.  The femoral stem of recovery has an epiphyseal part (A) and a diaphyseal part (B). The epiphyseal part (A) has a neck (C) adapted to receive a femoral head cooperating, for example, with an acetabular implant.

Les parties épiphysaire (A) et diaphysaire (B) peuvent constituer un ensemble unitaire. Ou bien, la partie épiphysaire (A) et la partie diaphysaire (B) peuvent constituer deux parties distinctes et indépendantes présentant des moyens complémentaires d'accouplement (figure 5). Dans ce cas, la partie épiphysaire (A) et la partie diaphysaire (B) peuvent être de différentes tailles et longueurs.  The epiphyseal (A) and diaphyseal (B) parts may constitute a unitary set. Or, the epiphyseal part (A) and the diaphyseal part (B) can constitute two distinct and independent parts having complementary coupling means (FIG. 5). In this case, the epiphyseal part (A) and the diaphyseal part (B) can be of different sizes and lengths.

Selon une caractéristique à la base de l'invention, la partie diaphysaire (B) présente successivement, sur la totalité de sa longueur, depuis l'extrémité inférieure de la partie épiphysaire (A) jusqu'à l'extrémité distale, une portée conique (1) de longueur xi, une portée cylindrique (2) de longueur x2, et une autre portée conique (3) de longueur x3.  According to a feature underlying the invention, the diaphyseal portion (B) has, successively, over its entire length, from the lower end of the epiphyseal part (A) to the distal end, a conical bearing surface. (1) of length xi, a cylindrical bearing (2) of length x2, and another tapered bearing (3) of length x3.

La conicité de la première portée conique (1) est comprise entre 2 et 7 . La conicité de la seconde portée conique (3) est comprise entre 1 et 2 . La longueur x2 de la portée cylindrique (2) est constante et déterminée pour correspondre sensiblement à celle de l'isthme fémoral. Elle s'inscrit à partir d'une hauteur fixée HI, corrélée au diamètre de l'isthme.  The taper of the first conical bearing (1) is between 2 and 7. The conicity of the second conical bearing (3) is between 1 and 2. The length x2 of the cylindrical bearing surface (2) is constant and determined to correspond substantially to that of the femoral isthmus. It fits from a fixed height HI, correlated to the diameter of the isthmus.

Les longueurs des deux parties coniques (1) et (3) résultent de la position de la portée cylindrique (2) et de la longueur totale requise x de la prothèse. Ainsi, la longueur xi est déterminée telle que xi = HI xA, formule dans laquelle xA correspond à la longueur de la partie épiphysaire, tandis que x3 = x - xA - xI - x2. La hauteur HI d'inscription de la portée cylindrique (2) par rapport au centre de tête fémorale est corrélée à son diamètre, et varie de 120 mm à 230 mm environ, pour un diamètre variant de 9 mm à 18 mm environ.  The lengths of the two conical portions (1) and (3) result from the position of the cylindrical bearing surface (2) and the total required length x of the prosthesis. Thus, the length xi is determined such that xi = HI xA, where xA is the length of the epiphyseal part, while x3 = x - xA - xI - x2. The inscription HI height of the cylindrical bearing (2) relative to the femoral head center is correlated to its diameter, and varies from 120 mm to about 230 mm, for a diameter ranging from about 9 mm to 18 mm.

Selon une autre caractéristique, la diaphyse (B) présente des agencements anti-rotatoires sous forme de rainures longitudinales.  According to another feature, the diaphysis (B) has anti-rotational arrangements in the form of longitudinal grooves.

A noter que sa première portée conique (1) est revêtue pour stimuler la consolidation osseuse tout comme la partie épiphysaire (A).  Note that its first conical scope (1) is coated to stimulate bone consolidation just like the epiphyseal part (A).

Selon une autre caractéristique, la portée cylindrique (2) peut présenter au moins un trou débouchant (2a) pour l'engagement d'une vis optionnelle de verrouillage.  According to another feature, the cylindrical seat (2) may have at least one through hole (2a) for the engagement of an optional locking screw.

Les avantages ressortent bien de la description.  The advantages are apparent from the description.

Claims (1)

7 REVENDICATIONS7 CLAIMS - 1- Tige fémorale de reprise impactée sans ciment pour prothèse de hanche présentant une partie épiphysaire (A) avec un col (C) apte à recevoir une tête fémorale et une partie diaphysaire (B), caractérisée en ce que la partie diaphysaire (B) présente successivement, sur la totalité de sa longueur: une portée conique (1), de longueur x1, - une portée cylindrique (2), de longueur x2, une portée conique (3), de longueur x3, afin de s'adapter et de se bloquer simultanément dans l'isthme fémoral et son prolongement diaphysaire.  - 1 femoral impacted uncemented femoral hip resection stem with an epiphyseal part (A) with a cervix (C) able to receive a femoral head and a diaphyseal part (B), characterized in that the diaphyseal part (B) ) presents successively, over its entire length: a conical bearing (1), of length x1, - a cylindrical bearing (2), of length x2, a conical bearing surface (3), of length x3, in order to adapt and to simultaneously block in the femoral isthmus and its diaphyseal prolongation. - 2- Tige selon la revendication 1, caractérisée en ce que la hauteur HI d'inscription de la portée cylindrique (2) par rapport au centre de tête fémorale est corrélée à son diamètre, et varie de 120 mm à 230 mm environ, pour un diamètre variant de 9 mm à 18 mm environ.  Rod according to claim 1, characterized in that the inscription height HI of the cylindrical seat (2) relative to the center of the femoral head is correlated with its diameter, and varies from 120 mm to approximately 230 mm, for a diameter ranging from about 9 mm to about 18 mm. - 3- Tige selon la revendication 1, caractérisée en ce que la longueur de la portée cylindrique (2), x2, est constante, indépendante de son diamètre, pour s'adapter à la longueur de l'isthme fémoral.  - 3 rod according to claim 1, characterized in that the length of the cylindrical bearing (2), x2, is constant, independent of its diameter, to adapt to the length of the femoral isthmus. - 4- Tige selon la revendication 1, caractérisée en ce que la conicité de la première portée conique (1) est comprise entre 2 et 7 , sa longueur xi étant déterminée telle que xi = HI _ xA XA étant la longueur de la partie épiphysaire (A).  Rod according to claim 1, characterized in that the conicity of the first conical bearing surface (1) is between 2 and 7, its length xi being determined such that xi = HI _ xA XA being the length of the epiphyseal part (AT). -5- Tige selon la revendication 1, caractérisée en ce que la conicité de la seconde portée conique (3) est comprise entre 1 et 2 , sa longueur x3 étant déterminée en fonction de la longueur totale requise x de la prothèse, telle que x3=x-XA-XI -X2.  Rod according to Claim 1, characterized in that the conicity of the second conical bearing surface (3) is between 1 and 2, its length x 3 being determined as a function of the total required length x of the prosthesis, such that x3 = x-XA-XI-X2. - 6- Tige selon la revendication 1, caractérisée en ce que la portée 5 cylindrique (2) présente au moins un trou de passage (2a) pour l'engagement d'une vis de verrouillage optionnelle.  - 6- Rod according to claim 1, characterized in that the cylindrical bearing surface (2) has at least one through hole (2a) for the engagement of an optional locking screw. -7- Tige selon la revendication 1, caractérisée en ce que la partie diaphysaire (B) présente des rainures longitudinales anti-rotatoires.  -7- Rod according to claim 1, characterized in that the diaphyseal portion (B) has anti-rotational longitudinal grooves. - 8- Tige selon la revendication 1, caractérisée en ce que la partie épiphysaire (A) et la première portée conique (1) de la diaphyse (B), sont revêtues.  Rod according to Claim 1, characterized in that the epiphyseal part (A) and the first conical bearing surface (1) of the diaphysis (B) are coated. -9- Tige selon la revendication 1, caractérisée en ce que la partie épiphysaire (A) et la partie diaphysaire (B) constituent deux parties distinctes et indépendantes.  Rod according to claim 1, characterized in that the epiphyseal part (A) and the diaphyseal part (B) constitute two distinct and independent parts. - 10- Tige selon la revendication 8, caractérisée en ce que les deux parties 20 distinctes (A) et (B) présentent des moyens complémentaires d'accouplement.  Rod according to Claim 8, characterized in that the two distinct parts (A) and (B) have complementary coupling means.
FR0452133A 2004-09-23 2004-09-23 IMPORTED IMPORTED FEMALE CURVENT ROD FOR HIP PROSTHESIS Expired - Fee Related FR2875397B1 (en)

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EP0677281A2 (en) * 1994-03-17 1995-10-18 G. Cremascoli S.R.L. Femoral prosthesis for recovering a prosthesis implantation which has provided negative results
FR2730628A1 (en) * 1995-01-27 1996-08-23 Amp Dev Adjustable two=part femoral implant prosthesis for hip replacement
FR2735972A1 (en) * 1995-06-30 1997-01-03 Mecanurgie Sa Soc Surgical femoral reconstruction prosthesis
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EP3332746A1 (en) * 2016-12-06 2018-06-13 WALDEMAR LINK GmbH & Co. KG Revision prosthesis shaft for a revision joint endoprosthesis
WO2018104331A1 (en) * 2016-12-06 2018-06-14 Waldemar Link Gmbh & Co. Kg Revision prosthesis shaft for a revision joint endoprosthesis
CN109982663A (en) * 2016-12-06 2019-07-05 沃尔德马连接两合公司 For repairing the prosthesis bar of articulated endoprosthesis
RU2727582C1 (en) * 2016-12-06 2020-07-22 ВАЛЬДЕМАР ЛИНК ГМБХ энд КО. КГ Joint revision endoprosthesis leg
CN109982663B (en) * 2016-12-06 2021-10-01 沃尔德马连接两合公司 Prosthetic stem for repairing an articular endoprosthesis
US11213399B2 (en) 2016-12-06 2022-01-04 Waldemar Link Gmbh & Co. Kg Revision prosthesis shaft for a revision joint endoprosthesis

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