FR2606273A1 - Improved joint prosthesis - Google Patents
Improved joint prosthesis Download PDFInfo
- Publication number
- FR2606273A1 FR2606273A1 FR8615804A FR8615804A FR2606273A1 FR 2606273 A1 FR2606273 A1 FR 2606273A1 FR 8615804 A FR8615804 A FR 8615804A FR 8615804 A FR8615804 A FR 8615804A FR 2606273 A1 FR2606273 A1 FR 2606273A1
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- France
- Prior art keywords
- rod
- neck
- whose
- walrus
- base
- 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.)
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Classifications
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
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- 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
- A61F2002/30537—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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/3079—Stepped or enlarged apertures, e.g. having discrete diameter changes
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- 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
- A61F2002/30795—Blind bores, e.g. of circular cross-section
- A61F2002/30797—Blind bores, e.g. of circular cross-section internally-threaded
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- 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
- A61F2002/3085—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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- 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
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- 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
- A61F2002/365—Connections of heads to necks
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
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- 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
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- 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
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- 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
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/005—Rosette-shaped, e.g. star-shaped
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
Description
PROTHESE D'ARTICULATION PERFECTIONNEE.IMPROVED JOINT PROSTHESIS.
L'invention concerne un nouveau type de prothèse d'articulation perfectionne, notamment une nouvelle pro rhèse totale de hanche à fixation primaire. The invention relates to a new type of improved joint prosthesis, in particular a new total hip prosthesis with primary fixation.
Dans la suite de la description, éventuellement les revendications, l'invention sera décrite plus particulièrement dans son application comme prothèse de hanche, étant précisé qu'il ne s'agit là qu'un mode de réalisation particulier mais néanmoins préféré. In the following description, possibly the claims, the invention will be described more particularly in its application as a hip prosthesis, it being specified that this is only a particular but nevertheless preferred embodiment.
Comme on le sait, une prothèse de hanche est essentiellement constituée de trois pièces principales, à savoir dans l'ordre
- une tige fémorale destinée à être insérée dans l'os (fémur) à renforcer
- une cupule cotyloïdienne destinée à s'engager dans la cavité cotyloïdienne de la hanche considérée
- enfin, un col prothétiqu#e, coiffé d'une sphère, reliant la tige et la cupule, destiné à assurer l'articulation proprement dite.As is known, a hip prosthesis essentially consists of three main parts, namely in order
- a femoral stem intended to be inserted into the bone (femur) to be reinforced
- an acetabular cup intended to engage in the acetabular cavity of the hip considered
- finally, a prosthetic collar # e, capped with a sphere, connecting the rod and the cup, intended to ensure the articulation proper.
L'invention concerne plus particulièrement l'assemblage de la tige et du col. The invention relates more particularly to the assembly of the rod and the neck.
On connait déjà un assemblage par emboitement au moyen de deux cones respectivement mâle et femelle à très faible pente, c'est-à-dire de l'ordre de.30 (cone de morse), portés respectivement à la tête de la tige et dans le corps du col. Ce type d'emboitement bien connu en mécanique a déjà été proposé pour la réalisation de prothèses (voir notamment brevet FR-A-1 017 927). There is already known an assembly by interlocking by means of two male and female cones respectively with a very slight slope, that is to say of the order of 30 (walrus cone), carried respectively at the head of the rod and in the body of the cervix. This type of interlocking, well known in mechanics, has already been proposed for the production of prostheses (see in particular patent FR-A-1 017 927).
Malheureusement, cette solution très attractive sur le plan théorique présente l'inconvénient d'être assez difficile à réaliser car la moindre imperfection dans l'usinage des cônes ou la moindre particule insérée entre les cônes, conduisent à un mauvais blocage qui peut entraîner des rotations du col sur la tige. C'est la raison pour laquelle sans doute, ce type d'emboitement bien cohnu en mécanique n'a pas donné toute satisfaction tant s'en faut pour la fabrication des prothèses d'articulation. Unfortunately, this solution, which is very attractive from a theoretical point of view, has the drawback of being quite difficult to achieve because the slightest imperfection in the machining of the cones or the slightest particle inserted between the cones, lead to poor blocking which can cause rotations. from the neck to the stem. This is the reason why no doubt, this type of well-cohesive interlocking in mechanics has not given all the satisfaction that is needed for the manufacture of joint prostheses.
L'invention pallie ces inconvénients. Elle vise une prothèse du type en question qui soit facile à mettre en place, rigide dans toute son architecture, et présente un serrage sûr et également anti-rotatoire. The invention overcomes these drawbacks. It aims at a prosthesis of the type in question which is easy to put in place, rigid throughout its architecture, and has a secure and also anti-rotational tightening.
Cette prothèse d'articulation du type comprenant
une tige destinée à être insérée dans l'os à ren
forcer
un col coopérant avec ladite tige destinée à assu
rer l'articulation proprement dite, et dans laquelle l'assemblage de la tige et du col est réalisé au moyen de deux cônes de morse à faible pente emboités l'un dans l'autre, se caractérise
- d'une part, en ce que la tête de la tige comporte une première partie conique (mâle ou femelle) de morse à faible pente dont la base présente un usinage polygonal régulier disposé entre la partie conique et la tige
- d'autre part, en ce que la partie du col destinée à venir en regard de la tige comporte une seconde partie conique (femelle ou mâle) de morse dont la pente est égale à celle de la première partie conique et dont la base présente également un usinage en étoile régulière dont le nombre de côtés est un multiple du nombre de côtés du polygone et dont l'angulation est la même que celle de ce polygone
- et enfin, en ce que lorsque les parties coniques respectives sont emboitées l'une dans l'autre, les faces en regard de la tige et du col ménagent entre elles un jeu résiduel.This joint prosthesis of the type comprising
a rod intended to be inserted into the bone to be ren
force
a collar cooperating with said rod intended to assu
rer the articulation proper, and in which the assembly of the rod and the neck is carried out by means of two cones of walrus with low slope fitted one inside the other, is characterized
- on the one hand, in that the head of the rod has a first conical part (male or female) of walrus with a slight slope, the base of which has a regular polygonal machining disposed between the conical part and the rod
- on the other hand, in that the part of the neck intended to come opposite the rod comprises a second conical part (female or male) of walrus whose slope is equal to that of the first conical part and whose base has also a regular star machining whose number of sides is a multiple of the number of sides of the polygon and whose angulation is the same as that of this polygon
- And finally, in that when the respective conical parts are fitted one inside the other, the facing faces of the rod and the neck provide residual play between them.
En d'autres termes, l'invention consiste à associer l'assemblage par cônes de morse à faible pente qui assure une bonne rigidité de l'ensemble avec un assemblage par polygones réguliers et étoile qui facilite la mise en place et l'orientation de l'antérversion du col, tout en ménageant entre la tige et le col un jeu ou un espace résiduel de sorte que l'on est sûr que les cônes respectifs sont parfaitement emboités, ce qui évite alors toute rotation de la tige sur le col. In other words, the invention consists in associating the assembly by walrus cones with a slight slope which ensures good rigidity of the assembly with an assembly by regular polygons and star which facilitates the positioning and orientation of anterversion of the neck, while leaving between the rod and the neck a clearance or a residual space so that one is sure that the respective cones are perfectly fitted, which then prevents any rotation of the rod on the neck.
Avantageusement, en pratique
- la tige présente un filetage qui se rapporte à la base de la tête de la tige qui comporte un hexagone réqulier puis un cône de morse mâle à faible pente
- -le col comporte un alésage conique femelle de morse dont la pente e-st comme déjà dit égale à celle du cône mâle de la tige, la base de cet alésage, destinée à venir en regard de la base de la tige, présentant un usinage en étoile régulière, par exemple à dix-huit ou à vingtquatre branches, et dont l'angulation au sommet est de 1200 pour coïncider avec l'hexagone de la tige
- l'angle au sommet des cônes de morse faible pente est compris entre 2 et 50 ; en effet, si cet angle au sommet est inférieur à 20, l'effet de bloquage est incertain, alors que si cet angle excède 5 , l'emboitement se fait généralement dans de mauvaises conditions avantageusement, l'angle au sommet est voisin de 30
- le jeu résiduel caractéristique entre la tige et le col doit être d'au moins 0,2 millimètre et avantageu sement inférieur à un millimètre , en effet, si ce jeu est inférieur a 0,2 millimètre, on a encore trop de risques d'appuis des faces en regard, appuis qui gêneront alors l'emboitement et par là empêcheront le blocage , si au contraire, ce jeu résiduel excède un millimètre, on réduit inutilement les surfaces en contact entre le polygone et l'étoile, ce qui diminue l'efficacité de la coopération de ces deux moyens de réglage et de serrage.Advantageously, in practice
- the rod has a thread which relates to the base of the head of the rod which comprises a requlier hexagon then a male walrus cone with slight slope
- The neck has a female conical walrus bore whose e-st slope as already said equal to that of the male cone of the rod, the base of this bore, intended to come opposite the base of the rod, having a regular star machining, for example with eighteen or twenty-four branches, and whose angulation at the top is 1200 to coincide with the hexagon of the rod
- the angle at the top of the gently sloping walrus cones is between 2 and 50; indeed, if this angle at the top is less than 20, the blocking effect is uncertain, while if this angle exceeds 5, the nesting is generally done in poor conditions advantageously, the angle at the top is close to 30
- the characteristic residual clearance between the rod and the neck must be at least 0.2 millimeter and advantageously less than one millimeter, indeed, if this clearance is less than 0.2 millimeter, there is still too much risk d support of the facing faces, supports which will then interfere with the nesting and thereby prevent blocking, if on the contrary, this residual clearance exceeds one millimeter, the surfaces in contact between the polygon and the star are unnecessarily reduced, which decreases the effectiveness of the cooperation of these two adjustment and tightening means.
L'invention et les avantages qui en découlent ressortiront mieux de l'exemple donné ci-après et qui est illustré par les schémas annexés dans lesquels
- la figure 1 montre en coupe sagitale une prothèse totale de hanche conforme à l'invention.The invention and the advantages which result therefrom will emerge more clearly from the example given below and which is illustrated by the appended diagrams in which
- Figure 1 shows in sagital section a total hip prosthesis according to the invention.
- la figure 2 montre également en coupe sommaire un col prothétique conforme à l'invention. - Figure 2 also shows in summary section a prosthetic neck according to the invention.
- la figure 3 est une vue en coupe selon l'axe III
III' de la figure 1 alors que la figure 4 est une vue en coupe longitudinale de la tête de la tige.- Figure 3 is a sectional view along axis III
III 'of Figure 1 while Figure 4 is a longitudinal sectional view of the head of the rod.
- la figure 5 est une vue en coupe de la base du col selon l'axe V-V' de la figure 1. - Figure 5 is a sectional view of the base of the neck along the axis V-V 'of Figure 1.
- enfin la figure 6 est une vue agrandie de l'emboitement des cônes respectifs et col caractéristique de l'invention. - Finally Figure 6 is an enlarged view of the socket of the respective cones and characteristic neck of the invention.
La prothèse totale de hanche selon l'invention se compose tout d'abord d'une tige fémorale (1) filetée (2) dont la tête (3) est plus large que la pointe (4). Selon une caractéristique décrite dans le brevet fR-A-2 839 093 du Demandeur, la section longitudinale de la tige (1) a une forme de tulipe à rayon variable progressif non linéaire et contenu dans le profil d'un polynome de degré 3. Selon une caractéristique de l'invention, la base (5) de la tête (3) de la tige (1) comporte un hexagone régulier (6) puis un cône de morse mâle (7) dont l'angle au sommet est de 3 . Cet hexagone (6) est formé de six pans élémentaires (8) à 1200. Le col prothétique (10) comporte une tête (11) sur laquelle vient s'emboiter la tête de frottement (12) qui coopère avec la cupule. The total hip prosthesis according to the invention consists first of all of a threaded femoral rod (1) (2) whose head (3) is wider than the tip (4). According to a characteristic described in patent FR-A-2 839 093 of the Applicant, the longitudinal section of the rod (1) has a tulip shape with a non-linear progressive variable radius and contained in the profile of a degree 3 polynomial. According to a characteristic of the invention, the base (5) of the head (3) of the rod (1) comprises a regular hexagon (6) then a male walrus cone (7) whose angle at the top is 3 . This hexagon (6) is formed of six elementary hexes (8) to 1200. The prosthetic neck (10) comprises a head (11) on which the friction head (12) which engages with the cup fits.
Selon une caractéristique de l'invention, le col (10) comporte dans la partie (13) un regard de la tige un alésage conique (14) à faible pente de morse dont l'angle au sommet est également de 3". De manière connue, l'assemblage du col (10) sur la tige (1) est effectué au moyen d'une vis (15) de coaptation. According to a characteristic of the invention, the neck (10) comprises in the part (13) a look of the rod a conical bore (14) with a low walrus slope whose angle at the top is also 3 ". known, the assembly of the neck (10) on the rod (1) is carried out by means of a coaptation screw (15).
Selon une autre caractéristique de l'invention, la base (13) de la tige (10) comporte juste avant le cône femelle d'emboitement (14) une étoile (16) destinée à coopérer avec l'hexagone (6). Cette étoile (16) montrée en détail à la figure 5 comporte vingt-quatre branches (6 x 4 = 24) dont l'angulation au sommet est de 120 pour coïncider avec l'angle au sommet des pans (8) de l'hexagone (6). La référence (18) désigne une gorge de dégagement de l'outil taillant les branches de l'étoile (16). According to another characteristic of the invention, the base (13) of the rod (10) comprises just before the female socket cone (14) a star (16) intended to cooperate with the hexagon (6). This star (16) shown in detail in Figure 5 has twenty-four branches (6 x 4 = 24) whose angulation at the top is 120 to coincide with the angle at the top of the sides (8) of the hexagon (6). The reference (18) designates a release groove for the tool cutting the branches of the star (16).
Selon la troisième caractéristique de l'invention, lorsque les deux cônes respectifs mâle (7) et femelle (14) sont parfaitement emboités, les faces en regard de la tige (1) et du col (10), à savoir respectivement (5) et (17) ménagent entre elles un jeu résiduel (20) de l'ordre de 0,5 millimètre. According to the third characteristic of the invention, when the two respective male (7) and female (14) cones are perfectly fitted, the opposite faces of the rod (1) and the neck (10), namely respectively (5) and (17) provide between them a residual clearance (20) of the order of 0.5 millimeter.
De la sorte, on est sûr que lorsque ce jeu résiduel caractéristique (20) existe, les cônes d'emboitement (7, 14) coopèrent parfaitement. In this way, it is certain that when this characteristic residual clearance (20) exists, the interlocking cones (7, 14) cooperate perfectly.
Dans le brevet européen EP-A-0000549, on a déjà décrit un système d'emboitement par polygone et étoile coopérant avec des parties coniques mâle et femelle. Dans cette solution, les parties coniques mâle et femelle présentent un angle au sommet appréciable,de l'ordre de 15 , qui résulte du fait que ces parties coniques ne participent pas au serrage,mais servent seulement d'organes centreurs. Ainsi, ces parties coniques ne participent pas à la rigidité de l'assemblage -qu'il faut d'ailleurs consolider par une vis d'arrêt. In the European patent EP-A-0000549, a system of interlocking by polygon and star has already been described cooperating with male and female conical parts. In this solution, the male and female conical parts have an appreciable apex angle, of the order of 15, which results from the fact that these conical parts do not participate in tightening, but only serve as centering members. Thus, these conical parts do not participate in the rigidity of the assembly - which must moreover be consolidated by a stop screw.
L'invention pallie ces inconvénients en combinant l'assemblage polygone-étoile avec un assemblage par cônes de morse mais en prévoyant de manière critique que dans la coopération de ces deux types d'assemblage, il faut en outre ménager un espace résiduel entre les deux parties à assembler. The invention overcomes these drawbacks by combining the polygon-star assembly with an assembly by walrus cones but by providing critically that in the cooperation of these two types of assembly, it is also necessary to provide a residual space between the two. parts to assemble.
Les prothèses selon l'invention présentent de nombreux avantages par rapport à celles connues à ce jour, notamment celles décrites dans la demande de brevet allemande ,-A- 2 839 093 du Demandeur. On peut citer
- une meilleure facilité de mise en place et de
positionnement grâce à l'étoile
- une meilleure rigidification de l'ensemble puisque
les cônes participent à cette fonction
- la sécurité d'avoir un serrage anti-rotatoire
- la sécurité de réaliser un serrage sûr par l'abs
cence d'appuis des faces de la tige et du col en
regard.The prostheses according to the invention have numerous advantages over those known to date, in particular those described in the German patent application, -A- 2 839 093 of the Applicant. We can cite
- better ease of installation and
positioning with the star
- better stiffening of the whole since
the cones participate in this function
- the security of having an anti-rotational tightening
- the security of carrying out a secure tightening by the abs
cence of support of the faces of the rod and the neck in
look.
De la sorte, ces prothèses d'articulation peuvent être utilisées avec succès, notamment pour la réalisation de prothèses de hanche. In this way, these joint prostheses can be used successfully, in particular for the production of hip prostheses.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8615804A FR2606273B1 (en) | 1986-11-10 | 1986-11-10 | IMPROVED JOINT PROSTHESIS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8615804A FR2606273B1 (en) | 1986-11-10 | 1986-11-10 | IMPROVED JOINT PROSTHESIS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2606273A1 true FR2606273A1 (en) | 1988-05-13 |
FR2606273B1 FR2606273B1 (en) | 1990-12-21 |
Family
ID=9340785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8615804A Expired - Lifetime FR2606273B1 (en) | 1986-11-10 | 1986-11-10 | IMPROVED JOINT PROSTHESIS |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2606273B1 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2616060A1 (en) * | 1987-06-03 | 1988-12-09 | Tornier Sa | Hip prosthesis with variable epiphyseal part |
FR2634371A1 (en) * | 1988-07-21 | 1990-01-26 | Flegeau Gerard | Hip prosthesis and method for manufacturing such a prosthesis |
FR2640497A1 (en) * | 1988-12-19 | 1990-06-22 | Mesguich Alain | Femoral implant for a hip prosthesis |
US5116379A (en) * | 1988-09-15 | 1992-05-26 | Mclardy Smith Peter D | Prosthesis |
FR2673832A1 (en) * | 1991-03-11 | 1992-09-18 | Serf | Femoral element for a hip prosthesis |
US5931871A (en) * | 1993-10-21 | 1999-08-03 | Allo Pro Ag | Kit of parts for a modular femur head prosthesis, in particular, a reoperation prosthesis, and a femur head prosthesis from such a kit of parts |
FR2800598A1 (en) * | 1999-11-09 | 2001-05-11 | Amplitude | RECONSTRUCTION ROD FOR HIP PROSTHESIS |
EP1159937A1 (en) * | 2000-05-29 | 2001-12-05 | Spike Trading Lda | A femoral prosthesis |
FR2889443A1 (en) * | 2005-08-02 | 2007-02-09 | Francois Badatcheff | Hip prosthesis femoral part, has prosthesis rod comprising metaphyseal part with cavity for receiving massive of modular cervix by press-fitting, where cavity and massive are limited by four segments to define oblong section |
DE102010016695A1 (en) * | 2010-04-29 | 2011-11-03 | Aesculap Ag | Endoprosthesis for use in hip implant at hip region of patient, has coupling element acting in axial direction and gripped at proximal and distal parts, so that proximal part is held at distal part in unlocked position |
CN108495603A (en) * | 2015-12-29 | 2018-09-04 | M·米特洛维奇 | Orthopaedic implant |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5961555A (en) | 1998-03-17 | 1999-10-05 | Huebner; Randall J. | Modular shoulder prosthesis |
US6494913B1 (en) | 1998-03-17 | 2002-12-17 | Acumed, Inc. | Shoulder prosthesis |
US7537618B2 (en) | 2006-11-13 | 2009-05-26 | Howmedica Osteonics Corp. | Modular humeral head |
Citations (4)
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US3067740A (en) * | 1959-09-08 | 1962-12-11 | Edward J Haboush | Hip joint prosthesis |
EP0000549A1 (en) * | 1977-07-29 | 1979-02-07 | Bayer Ag | Endoprosthesis |
FR2575383A1 (en) * | 1984-12-27 | 1986-07-04 | Lecestre Pierre | Prosthesis for synovial joint |
FR2580171A1 (en) * | 1985-04-10 | 1986-10-17 | Rambert Andre | Femoral part for hip joint prosthesis |
-
1986
- 1986-11-10 FR FR8615804A patent/FR2606273B1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3067740A (en) * | 1959-09-08 | 1962-12-11 | Edward J Haboush | Hip joint prosthesis |
EP0000549A1 (en) * | 1977-07-29 | 1979-02-07 | Bayer Ag | Endoprosthesis |
FR2575383A1 (en) * | 1984-12-27 | 1986-07-04 | Lecestre Pierre | Prosthesis for synovial joint |
FR2580171A1 (en) * | 1985-04-10 | 1986-10-17 | Rambert Andre | Femoral part for hip joint prosthesis |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2616060A1 (en) * | 1987-06-03 | 1988-12-09 | Tornier Sa | Hip prosthesis with variable epiphyseal part |
FR2634371A1 (en) * | 1988-07-21 | 1990-01-26 | Flegeau Gerard | Hip prosthesis and method for manufacturing such a prosthesis |
US5116379A (en) * | 1988-09-15 | 1992-05-26 | Mclardy Smith Peter D | Prosthesis |
FR2640497A1 (en) * | 1988-12-19 | 1990-06-22 | Mesguich Alain | Femoral implant for a hip prosthesis |
FR2673832A1 (en) * | 1991-03-11 | 1992-09-18 | Serf | Femoral element for a hip prosthesis |
US5931871A (en) * | 1993-10-21 | 1999-08-03 | Allo Pro Ag | Kit of parts for a modular femur head prosthesis, in particular, a reoperation prosthesis, and a femur head prosthesis from such a kit of parts |
FR2800598A1 (en) * | 1999-11-09 | 2001-05-11 | Amplitude | RECONSTRUCTION ROD FOR HIP PROSTHESIS |
EP1099427A1 (en) * | 1999-11-09 | 2001-05-16 | Amplitude | Reconstruction femoral shaft |
EP1159937A1 (en) * | 2000-05-29 | 2001-12-05 | Spike Trading Lda | A femoral prosthesis |
FR2889443A1 (en) * | 2005-08-02 | 2007-02-09 | Francois Badatcheff | Hip prosthesis femoral part, has prosthesis rod comprising metaphyseal part with cavity for receiving massive of modular cervix by press-fitting, where cavity and massive are limited by four segments to define oblong section |
EP1754455A1 (en) * | 2005-08-02 | 2007-02-21 | Francois Badatcheff | Femoral part of a hip prosthesis |
DE102010016695A1 (en) * | 2010-04-29 | 2011-11-03 | Aesculap Ag | Endoprosthesis for use in hip implant at hip region of patient, has coupling element acting in axial direction and gripped at proximal and distal parts, so that proximal part is held at distal part in unlocked position |
CN108495603A (en) * | 2015-12-29 | 2018-09-04 | M·米特洛维奇 | Orthopaedic implant |
CN108495603B (en) * | 2015-12-29 | 2020-09-11 | M·米特洛维奇 | Orthopedic implant |
Also Published As
Publication number | Publication date |
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FR2606273B1 (en) | 1990-12-21 |
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