FR2735970A1 - Femoral surgical prosthetic insert - Google Patents

Femoral surgical prosthetic insert Download PDF

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Publication number
FR2735970A1
FR2735970A1 FR9507933A FR9507933A FR2735970A1 FR 2735970 A1 FR2735970 A1 FR 2735970A1 FR 9507933 A FR9507933 A FR 9507933A FR 9507933 A FR9507933 A FR 9507933A FR 2735970 A1 FR2735970 A1 FR 2735970A1
Authority
FR
France
Prior art keywords
femoral
range
prosthesis
rod
femoral element
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
FR9507933A
Other languages
French (fr)
Other versions
FR2735970B1 (en
Inventor
Gerard Alexandre
Jean Marc Feron
Daniel Lesaux
Thierry Musset
Bernard Tomeno
Jean Veinberg
Claude Vielpeau
Jean Marie Verleyen
Lionel Baron
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.)
Bernard Tomeno Fr
Claude Vielpeau Fr
Daniel Lesaux Fr
Gerard Alexandre Fr
Howmedica France Fr
Jean Marc Feron Fr
Jean Veinberg Fr
Thierry Musset Fr
Stryker Ireland Ltd
Original Assignee
HOWMEDICA FRANCE
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Priority to FR9507933A priority Critical patent/FR2735970B1/en
Publication of FR2735970A1 publication Critical patent/FR2735970A1/en
Application granted granted Critical
Publication of FR2735970B1 publication Critical patent/FR2735970B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3676—Distal or diaphyseal parts of shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—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
    • 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
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    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30125—Rounded shapes, e.g. with rounded corners elliptical or oval
    • 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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    • A61F2002/3011—Cross-sections or two-dimensional shapes
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    • A61F2002/30156—Convex polygonal shapes triangular
    • 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
    • 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
    • A61F2002/30158—Convex polygonal shapes trapezoidal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/365—Connections of heads to necks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2002/3678—Geometrical features
    • A61F2002/3686—Geometrical features bent
    • 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
    • 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
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    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval
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    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
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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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A61F2230/0026—Angular shapes trapezoidal

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  • 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 prosthesis has a range of components. Each femoral component has the same geometric point (4) defined as being the return point of the diaphysiary axis (X-X) of the nail (3) of the femoral element of the prosthesis with the cervical axis (Y-Y) of the defining cone (7) for the head of the prosthesis. The nail of each femoral element of the range is straight without presenting a curvature in the median or anterio-posterior planes.

Description

La présente invention a pour objet une gamme d'éléments fémoraux pour prothèse de hanche. The present invention relates to a range of femoral elements for hip prosthesis.

L'élément fémoral est destiné à être implanté dans le canal médullaire fémoral. Après avoir été complété par l'addition d'une pièce comportant une tête fémorale, en forme de boule sphérique, l'élément fémoral vient s'articuler dans un élément cotyloïdien en forme de cupule ancrée dans le cotyle osseux du bassin. The femoral element is intended to be implanted in the femoral medullary canal. After having been completed by the addition of a part comprising a femoral head, in the form of a spherical ball, the femoral element is articulated in an acetabular element in the form of a cup anchored in the bony acetabulum of the pelvis.

Les prothèses totales de hanche, ainsi constituées d'un élément fémoral et d'un élément cotyloïdien, sont généralement implantées soit directement par assemblage des éléments de la prothèse dans le squelette, soit par scellement à l'aide d'un ciment chirurgicdl.  The total hip prostheses, thus made up of a femoral element and an acetabular element, are generally implanted either directly by assembling the elements of the prosthesis in the skeleton, or by sealing using a surgical cement.

Dans l'un comme dans l'autre ca, il est nécessaire de prévoir une bonne adaptation des formes géométriques des éléments prothétiques avec les dimensions des os dans lesquels ces éléments sont implantés. In both cases, it is necessary to provide a good adaptation of the geometric shapes of the prosthetic elements with the dimensions of the bones in which these elements are implanted.

Cette adaptation doit également tenir compte de la musculation des patients, qui sont souvent des personnes âgées, dont l'articulation coxo-fémorale est douloureuse, par suite d'un traumatisme ou de la dégénérescence de cette articulation. This adaptation must also take into account the weight training of patients, who are often elderly people, whose hip joint is painful, due to trauma or degeneration of this joint.

La présente invention a pour but de proposer au chirurgien une gamme d'éléments fémoraux pour prothèse de hanche, qui assure, mieux que ceux actuellement disponibles dans le commerce, un parfait maintien des différents éléments de la prothèse dans l'os et permet, à la demande du chirurgien, de régler au mieux les équilibres nécessaires à une adéquation entre les parties saines des os du squelette, la musculation du patient et les dimensions des prothèses mises à sa disposition. The present invention aims to provide the surgeon with a range of femoral elements for hip prosthesis, which ensures, better than those currently available on the market, perfect retention of the various elements of the prosthesis in the bone and allows, at the request of the surgeon, to adjust as well as possible the balances necessary for an adequacy between the healthy parts of the bones of the skeleton, the musculation of the patient and the dimensions of the prostheses placed at his disposal.

La gamme d'éléments fémoraux de prothèses de hanches selon la présente invention, se caractérise par le fait que chaque élément fémoral de la gamme présente le même point géométrique défini comme étant le point de rencontre de l'axe diaphysaire de la tige de l'élément fémoral avec l'axe cervical d'un cône d'emboîtement pour la tête de la prothèse. The range of femoral elements of hip prostheses according to the present invention is characterized in that each femoral element of the range has the same geometric point defined as being the meeting point of the diaphyseal axis of the stem of the femoral element with the cervical axis of an interlocking cone for the head of the prosthesis.

Une telle géométrie de ces éléments fémoraux permet au chirurgien de déterminer l'élément qui convient le mieux au patient à opérer, compte-tenu des dimensions du canal médullaire et du travail nécessaire à l'implantation de la tige, indépendamment de la pièce comportant la tête de la prothèse. Such a geometry of these femoral elements allows the surgeon to determine the element which is most suitable for the patient to be operated, taking into account the dimensions of the medullary canal and the work necessary for the implantation of the rod, independently of the part comprising the prosthesis head.

En effet, chacun des éléments fémoraux de la gamme selon l'invention présente, de préférence, une tige droite, c'est-à-dire ne présentant aucune courbure dans le plan médian ou antéro-postérieur du patient, soit simple ou en S. In fact, each of the femoral elements of the range according to the invention preferably has a straight rod, that is to say having no curvature in the median or antero-posterior plane of the patient, either simple or in S .

Une telle forme droite de la tige facilite le travail d'implantation du chirurgien, qui peut effectuer un alésage du canal médullaire avec un alésoir approprié. Such a straight shape of the rod facilitates the implantation work of the surgeon, who can perform a reaming of the medullary canal with an appropriate reamer.

La forme rectiligne de la tige permet une excellente adaptation sur toute la périphérie de la surface extérieure de la tige, quelle que soit son niveau, avec la paroi interne de la diaphyse osseuse. The straight shape of the stem allows excellent adaptation over the entire periphery of the outer surface of the stem, whatever its level, with the internal wall of the bone shaft.

La distance entre l'extrémité distale de la tige et le centre géométrique, tel que précédemment défini, peut correspondre à une proportion d'au moins 80 % de la longueur de la ligne médiane de la tige, mesurée depuis son extrémité jusqu'à la collerette d'appui de l'élément fémoral sur les trochanters et projetée sur l'axe diaphysaire. The distance between the distal end of the rod and the geometric center, as previously defined, can correspond to a proportion of at least 80% of the length of the center line of the rod, measured from its end to the support flange of the femoral element on the trochanters and projected onto the diaphyseal axis.

La tige peut en outre présenter une section droite de forme triangulaire à angles arrondis à son extrémité distale et de forme ovale à proximité et/ou au niveau du centre géométrique de l'élément fémoral. The rod may also have a cross section of triangular shape with rounded angles at its distal end and of oval shape near and / or at the geometric center of the femoral element.

Ces différents critères de formes et de dimensions de la tige permettent de réduire, voire de supprimer, l'utilisation d'un ciment chirurgical pour l'implantation de la tige dans le canal médullaire; et surtout, ils permettent d'éviter des mises en contact uniquement ponctuelles entre tige et os, à différents niveaux, qui peuvent provoquer, par un effet de bras de levier, des fractures du fémur, au niveau de l'implantation de la prothèse dans la diaphyse du fémur. These different criteria of shapes and dimensions of the stem make it possible to reduce, or even eliminate, the use of surgical cement for implanting the stem in the medullary canal; and above all, they make it possible to avoid only punctual contact between rod and bone, at different levels, which can cause, by a lever arm effect, fractures of the femur, at the level of the implantation of the prosthesis in the diaphysis of the femur.

Selon l'invention les éléments fémoraux présentent, dans l'axe cervical, c'est-à-dire correspondant au col du fémur, un cône d'emboîtement mâle, pour la mise en place de la pièce comportant la tête sphérique de la prothèse. According to the invention, the femoral elements have, in the cervical axis, that is to say corresponding to the neck of the femur, a male interlocking cone, for the positioning of the part comprising the spherical head of the prosthesis .

Une telle structure, permet au chirurgien, après sélection de la pièce comportant la tige, de lui adapter une tête, en toute indépendance des raisons ayant entraîné le choix de la première. Such a structure allows the surgeon, after selecting the part comprising the rod, to adapt a head to it, independently of the reasons which led to the choice of the first.

En effet la première pièce est choisie en fonction, entré autres, de la diaphyse et de la longueur du fémur du patient et de l'assise à assurer à cette pièce sur les trochanters. La distance de la tête à implanter dans le cotyle osseux du bassin est indépendante de la tige. In fact, the first part is chosen according to, among other things, the diaphysis and the length of the patient's femur and the seat to be provided for this part on the trochanters. The distance from the head to be implanted in the bony acetabulum of the pelvis is independent of the rod.

La présente invention va maintenant être illustrée à l'aide des schémas ci-joints, dans lesquels
- la figure 1 représente une gamme de pièces comportant une tige pour éléments fémoraux de prothèse de hanche selon l'invention
- la figure 2 représente une vue d'une des pièces représentées sur la figure 1 et une tête de prothèse et la figure 3 une vue du cône d'emboîtement de cette pièce sur la tête de prothèse
- la figure 4 représente une vue de côté de la pièce de la figure 2
- les figures 5, 6, 7 et 8 représentent des coupes selon les lignes AA, BB, CC et DD de la figure 2
La gamme d'éléments fémoraux (1) de prothèses de hanche selon l'invention est illustré sur la figure 1, où on a représenté uniquement la pièce (2) de ces éléments comportant une tige (3).The present invention will now be illustrated with the aid of the attached diagrams, in which
- Figure 1 shows a range of parts comprising a rod for femoral elements of hip prosthesis according to the invention
- Figure 2 shows a view of one of the parts shown in Figure 1 and a prosthesis head and Figure 3 a view of the cone for fitting this part on the prosthesis head
- Figure 4 shows a side view of the part of Figure 2
- Figures 5, 6, 7 and 8 show sections along lines AA, BB, CC and DD of Figure 2
The range of femoral elements (1) of hip prostheses according to the invention is illustrated in FIG. 1, where only the part (2) of these elements is shown comprising a rod (3).

Comme le montre cette figure, la tige (3) de ces pièces est droite et elles comportent toutes un point géométrique commun (4), qui est défini par l'intersection de l'axe diaphysaire XX' de la tige avec l'axe cervical yy' qui correspond à l'axe du col (6) et à l'axe du cône (7) recevant la tête de prothèse (8). As this figure shows, the rod (3) of these parts is straight and they all have a common geometric point (4), which is defined by the intersection of the diaphyseal axis XX 'of the rod with the cervical axis yy 'which corresponds to the axis of the neck (6) and the axis of the cone (7) receiving the prosthesis head (8).

Le cône d'emboîtement (7) est représenté sur les figures 2, 3 et 4 sous forme d'un cône mâle situé à l'extré- mité du col (6). The interlocking cone (7) is shown in FIGS. 2, 3 and 4 in the form of a male cone located at the end of the neck (6).

L'élément fémoral complet (1) est représenté sur la figure 2 avec d'une part la pièce (2) comportant la tige (3) et un cône (7) et d'autre part la tête (8) s'emboîtant sur le cône (7). The complete femoral element (1) is shown in FIG. 2 with on the one hand the part (2) comprising the rod (3) and a cone (7) and on the other hand the head (8) fitting onto the cone (7).

Sur la figure 1 on a représenté trois points E,
F et G sur l'axe XX' diaphysaire de la tige.In FIG. 1 three points E have been represented,
F and G on the axis XX 'diaphyseal of the stem.

Le point E correspond à l'extrémité distale de la tige, le point F au point géométrique défini ci-dessus et le point G à la projection sur cet axe du point de rencontre de la ligne médiane de l'élément fémoral avec le plan de la collerette (12), d'assise de l'élément sur les trochanters. Point E corresponds to the distal end of the stem, point F at the geometric point defined above and point G at the projection on this axis of the meeting point of the midline of the femoral element with the plane of the collar (12), for seating the element on the trochanters.

On remarque que la distance EF représente au moins 80 % de la distance EG correspondant à la longueur projetée sur l'axe XX' de la tige (3) depuis son extrémité distale jusqu'à la collerette. Note that the distance EF represents at least 80% of the distance EG corresponding to the length projected on the axis XX 'of the rod (3) from its distal end to the flange.

La figure 4 illustre la forme de la collerette (12) de l'élément fémoral. Figure 4 illustrates the shape of the flange (12) of the femoral element.

La section droite de la tige (3) des éléments de prothèse selon l'invention est illustrée sur les figures 5 à 8, sur lesquelles on voit que cette section passe d'une forme triangulaire à angles arrondis à son extrémité distale à une forme devenant progressivement ovale ou ovoïde au niveau du point géométrique (4) jusqu'au plan de la collerette (12). The cross section of the stem (3) of the prosthesis elements according to the invention is illustrated in FIGS. 5 to 8, in which it can be seen that this section changes from a triangular shape with rounded angles at its distal end to a shape that becomes progressively oval or ovoid at the geometric point (4) to the plane of the collar (12).

L'extrémité de la pièce (2) recevant la tête de prothèse (8) est en forme de cône (7) inclinée d'un angle aigu a, comme représenté sur les figures 2, 3 et 4. The end of the part (2) receiving the prosthesis head (8) is in the form of a cone (7) inclined at an acute angle a, as shown in FIGS. 2, 3 and 4.

Une telle gamme permet d'offrir au chirurgien une très grande variété de possibilités d'implantation de prothèses fémorales avec un minimum de pièces.  Such a range makes it possible to offer the surgeon a very wide variety of possibilities for implanting femoral prostheses with a minimum of parts.

Le centre géométrique (4) commun à toutes les tiges permet le choix extemporané de la tige la mieux adaptée à la configuration osseuse du patient.  The geometric center (4) common to all the rods allows the extemporaneous choice of the rod best suited to the patient's bone configuration.

Claims (6)

REVENDICATIONS 1. Gamme d'éléments fémoraux (1) de prothèses de hanches caractérisée en ce que chaque élément fémoral de la gamme présente le même point géométrique (4) défini comme étant le point de rencontre de l'axe diaphysaire (XX') de la tige (3) de l'élément fémoral de la prothèse avec l'axe cervical (YY') d'un cône d'emboîtement (7) pour la tête de la prothèse (8). 1. Range of femoral elements (1) of hip prostheses characterized in that each femoral element of the range has the same geometric point (4) defined as being the meeting point of the diaphyseal axis (XX ') of the stem (3) of the femoral component of the prosthesis with the cervical axis (YY ') of a socket cone (7) for the head of the prosthesis (8). 2. Gamme selon la revendication 1 caractérisée en ce que la tige (3) de chaque élément fémoral de la gamme est droite, sans présenter de courbure dans le plan médian ou antéro-postérieur. 2. Range according to claim 1 characterized in that the rod (3) of each femoral element of the range is straight, without having any curvature in the median or anteroposterior plane. 3. Gamme selon l'une quelconque des revendications précédentes caractérisée en ce que la proportion de la longueur de la ligne médiane de la tige (3) de chaque élément fémoral (1) de la gamme, mesurée de son extrémité distale à la collerette et projetée sur l'axe diaphysaire (XX') est d'au moins 80 % entre ladite extrémité et le point géométrique (4). 3. Range according to any one of the preceding claims, characterized in that the proportion of the length of the midline of the rod (3) of each femoral element (1) of the range, measured from its distal end to the collar and projected on the diaphyseal axis (XX ') is at least 80% between said end and the geometric point (4). 4. Gamme selon l'une quelconque des revendications précédentes 1 à 3, caractérisée en ce que la section droite de la tige (3) de chaque élément fémoral (1) au niveau de son extrémité distale est de forme triangulaire à angles arrondis. 4. Range according to any one of the preceding claims 1 to 3, characterized in that the cross section of the rod (3) of each femoral element (1) at its distal end is of triangular shape with rounded angles. 5. Gamme selon l'une quelconque des revendications précédentes 1 à 4, caractérisée en ce que la section droite de la tige (3) de chaque élément fémoral (1) à proximité et/ou au niveau du point géométrique est de forme ovale. 5. Range according to any one of the preceding claims 1 to 4, characterized in that the cross section of the rod (3) of each femoral element (1) near and / or at the geometric point is of oval shape. 6. Gamme selon l'une quelconque des revendications précédentes 1 à 5 caractérisée en ce que chaque élément fémoral (1) de la gamme présente un cône d'emboîtement mâle pour l'adaptation de têtes de prothèse, de différentes dimensions.  6. Range according to any one of the preceding claims 1 to 5 characterized in that each femoral element (1) of the range has a male interlocking cone for the adaptation of prosthesis heads, of different dimensions.
FR9507933A 1995-06-30 1995-06-30 RANGE OF FEMALE ELEMENTS OF HIP PROSTHESES Expired - Lifetime FR2735970B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0962199A1 (en) * 1998-06-04 1999-12-08 Sulzer Orthopädie AG Shaft prosthesis
EP0974317A1 (en) * 1998-07-24 2000-01-26 BEJUI, Jacques Anchoring shaft for hip joint prosthesis and set of such shafts
FR2797762A1 (en) 1999-08-27 2001-03-02 Cottin Philippe Femoral implant for artificial hip joint has frustoconical projection which accommodates ball, standing on conical base and has curved tapered projection extending from shoulder
FR2830184A1 (en) * 2001-09-28 2003-04-04 Depuy France HIP PROSTHESIS FEMALE PART, SET OF SUCH FEMORAL PARTS, AND METHODS OF MANUFACTURING SUCH FEMALE PART AND FEMALE PARTY GAME
GB2473184A (en) * 2009-08-27 2011-03-09 Biomet Uk Ltd A femoral neck prosthesis with trapezoidal cross-section
EP3106132A1 (en) * 2012-09-28 2016-12-21 DePuy Synthes Products, LLC Kit comprising a plurality of femoral protheses

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FR2629707A1 (en) * 1988-04-07 1989-10-13 Roux Jean Pierre Femoral piece and equipment for making a hip prosthesis
FR2639820A1 (en) * 1988-12-07 1990-06-08 Implants Instr Ch Fab Femoral shafts for total hip prostheses
EP0477113A1 (en) * 1990-09-18 1992-03-25 Medinov Sa Prosthetic assembly for hip joint
US5108451A (en) * 1991-01-31 1992-04-28 Forte Mark R Femoral component of a hip joint prosthesis

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Publication number Priority date Publication date Assignee Title
DE3811207A1 (en) * 1988-04-01 1989-10-12 Berchem & Schaberg Gmbh JOINT PROSTHESIS, IN PARTICULAR HIP JOINT PROSTHESIS
FR2629707A1 (en) * 1988-04-07 1989-10-13 Roux Jean Pierre Femoral piece and equipment for making a hip prosthesis
FR2639820A1 (en) * 1988-12-07 1990-06-08 Implants Instr Ch Fab Femoral shafts for total hip prostheses
EP0477113A1 (en) * 1990-09-18 1992-03-25 Medinov Sa Prosthetic assembly for hip joint
US5108451A (en) * 1991-01-31 1992-04-28 Forte Mark R Femoral component of a hip joint prosthesis

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0962199A1 (en) * 1998-06-04 1999-12-08 Sulzer Orthopädie AG Shaft prosthesis
US6254640B1 (en) 1998-06-04 2001-07-03 Sulzer Orthopaedie Ag Shaft prosthesis and set
EP0974317A1 (en) * 1998-07-24 2000-01-26 BEJUI, Jacques Anchoring shaft for hip joint prosthesis and set of such shafts
FR2781365A1 (en) * 1998-07-24 2000-01-28 Jacques Bejui ANCHORING ROD FOR HIP JOINT PROSTHESIS AND SET OF SUCH RODS
FR2797762A1 (en) 1999-08-27 2001-03-02 Cottin Philippe Femoral implant for artificial hip joint has frustoconical projection which accommodates ball, standing on conical base and has curved tapered projection extending from shoulder
WO2003028594A1 (en) * 2001-09-28 2003-04-10 Depuy France Femoral hip prosthesis part, a set of such femoral parts and the production method thereof
FR2830184A1 (en) * 2001-09-28 2003-04-04 Depuy France HIP PROSTHESIS FEMALE PART, SET OF SUCH FEMORAL PARTS, AND METHODS OF MANUFACTURING SUCH FEMALE PART AND FEMALE PARTY GAME
GB2473184A (en) * 2009-08-27 2011-03-09 Biomet Uk Ltd A femoral neck prosthesis with trapezoidal cross-section
AU2009351868B2 (en) * 2009-08-27 2013-10-17 Biomet Uk Limited A femoral neck prosthesis
GB2473184B (en) * 2009-08-27 2014-09-03 Biomet Uk Ltd A femoral neck prosthesis
EP3106132A1 (en) * 2012-09-28 2016-12-21 DePuy Synthes Products, LLC Kit comprising a plurality of femoral protheses
US10022244B2 (en) 2012-09-28 2018-07-17 DePuy Synthes Products, Inc. Method for femoral prosthesis with insertion/extraction feature
US10646354B2 (en) 2012-09-28 2020-05-12 DePuy Synthes Products, Inc. Kit with femoral prostheses having insertion/extraction features

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