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FR2639820A1 - Femoral shafts for total hip prostheses - Google Patents

Femoral shafts for total hip prostheses Download PDF

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Publication number
FR2639820A1
FR2639820A1 FR8816497A FR8816497A FR2639820A1 FR 2639820 A1 FR2639820 A1 FR 2639820A1 FR 8816497 A FR8816497 A FR 8816497A FR 8816497 A FR8816497 A FR 8816497A FR 2639820 A1 FR2639820 A1 FR 2639820A1
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FR
France
Prior art keywords
stems
lateralized
rods
rod
tails
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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
FR8816497A
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French (fr)
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FR2639820B1 (en
Inventor
Jean Paul Jouan
Jean-Claude Gardes
Bernard Reignier
Jacques Barade
Thierry Judet
Bertrand Brumpt
Gerard Saillant
Alain Herbert
Gerard Senly
Francois Combelles
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IMPLANTS INSTR CH FAB
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IMPLANTS INSTR CH FAB
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Priority to FR8816497A priority Critical patent/FR2639820B1/en
Publication of FR2639820A1 publication Critical patent/FR2639820A1/en
Application granted granted Critical
Publication of FR2639820B1 publication Critical patent/FR2639820B1/en
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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
    • 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
    • A61F2002/30125—Rounded shapes, e.g. with rounded corners elliptical or oval
    • 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
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30943—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using mathematical models
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/365—Connections of heads to necks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval

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 femoral shafts are distinguished by the fact that the stems 1a to 16a of the shafts 1 to 16 are established according to a homothetic progression of all the dimensions within the one same series and on the basis of a reference face formed by the inner narrow edges 1e to 16e of the stems; the dimensions of the lower part of the stems are superposed for some shafts in the range; the dimensions of the conical bearing surfaces 1c to 16c are determined in such a way as to receive semispherical heads of various diameters.

Description

L'invention concerne des tiges fémorales pour prothèses totales de hanches. The invention relates to femoral rods for total hip prostheses.

L'objet de l'invention se rattache au secteur technique des sciences médicales et plus particulièrement des organes artificiels de remplacement ou de réfection des articulations du corps humain. The object of the invention relates to the technical sector of medical sciences and more particularly to artificial organs for replacing or repairing the joints of the human body.

On connait de nombreux types de tiges fémorales destinées a être introduites dans les cavités médullaires du fémur préparées à cet effet. La plupart de ces tiges ont une queue effilée et une partie supérieure incurvée formant une collerette d'appui sur la face supérieure du col du fémur ou "éperon de Merkel réséqué, puis généralement une portée conique permet le montage d'une tête hémisphérique de coopération avec l'autre partie de l'articulation artificielle solidarisée au cotyle osseux du bassin, à savoir un noyau logé dans une cupule ou un anneau vissé. Many types of femoral stems are known which are intended to be introduced into the medullary cavities of the femur prepared for this purpose. Most of these rods have a tapered tail and a curved upper part forming a support collar on the upper face of the femoral neck or "resected Merkel spur, then generally a conical bearing allows the mounting of a hemispherical head of cooperation with the other part of the artificial joint secured to the bony acetabulum of the pelvis, namely a nucleus housed in a cup or a screwed ring.

Suivant le cas clinique, le chirurgien doit pouvoir disposer d'une gamme complète de tiges fémorales avec des dimensions différentes de la queue et de la tête, des orientations et positions différentes de la tête par rapport à la queue, et des dimensions différentes de la portée conique, cela dans les trois types principaux de tiges, c'est- & dire normales ou droites, dysplasiques et latéralisées. According to the clinical case, the surgeon must be able to have a complete range of femoral stems with different dimensions of the tail and the head, different orientations and positions of the head relative to the tail, and different dimensions of the conical bearing, this in the three main types of stems, that is to say normal or straight, dysplastic and lateralized.

Jusqu'à ce jour, la gamme de tiges fémorales proposée ne répond pas parfaitement à tous les cas cliniques, ce qui oblige le chirurgien a choisir approximativement les tiges, avec toutes les conséquences que cela implique au plan des résultats. To date, the range of femoral stems offered does not respond perfectly to all clinical cases, which forces the surgeon to choose approximately the stems, with all the consequences that this implies in terms of results.

Pour pallier & ces inconvénients, on a conçu les tiges fémorales selon l'invention qui présentent en combinaison les caractéristiques suivantes : les queues de tiges sont établies selon une progression homothétique de toutes les cotes à l'intérieur d'une même série et à partir d'une face de référence constituée par les chants intérieurs des queues ; les cotes de la partie basse des queues se superposent pour certaines tiges de la gamme ; les dimensions des portées coniques sont déterminées pour recevoir des têtes hémisphériques de différents diamètres, ces tiges étant réunies au sein d'une gamme. To overcome these drawbacks, the femoral stems according to the invention have been designed which, in combination, have the following characteristics: the stem tails are established according to a homothetic progression of all the dimensions within the same series and from a reference face formed by the inner edges of the tails; the dimensions of the lower part of the tails overlap for certain rods in the range; the dimensions of the conical bearing surfaces are determined to receive hemispherical heads of different diameters, these rods being joined within a range.

On a également cherché à améliorer l'appui de la tige fémorale sur la tête de fémur et à éviter les aspérités néfastes au niveau du raccordement entre la collerette et la queue. We have also sought to improve the support of the femoral stem on the femur head and to avoid harmful roughness at the connection between the flange and the tail.

Pour cela, et selon une autre caractéristique, les collerettes d'appui sur le col du fémur réséqué ont une forme périphérique ovoïde avec une partie saillante entre la périphérie des queues et les congés de raccordement avec les portées coniques uniquement du côté interne tandis que du côté extérieur les collerettes se raccordent au profil des queues sans débordement. For this, and according to another characteristic, the support flanges on the neck of the resected femur have an ovoid peripheral shape with a protruding part between the periphery of the tails and the connecting leaves with the conical bearing surfaces only on the internal side while the outer side the flanges are connected to the profile of the tails without overflow.

Ces caractéristiques et d'autres encore ressortiront de la description qui suit. These characteristics and others will emerge from the description which follows.

Pour fixer l'objet de l'invention sans toutefois le limiter, dans les dessins annexés
Les figures 1, 2 et 3 montrent respectivement des jeux de tiges fémorales dysplasiques, droites et latéralisées établies selon l'invention.To set the subject of the invention without however limiting it, in the accompanying drawings
Figures 1, 2 and 3 respectively show sets of dysplastic, straight and lateralized femoral rods established according to the invention.

La figure 4 est une vue en coupe considérée suivant la ligne 4-4 de la figure 1 montrant la forme en section de la collerette d'appui. Figure 4 is a sectional view taken along line 4-4 of Figure 1 showing the sectional shape of the support flange.

La figure 5 est un schéma de principe illustrant la gamme complète de tiges fémorales établies selon l'invention. Figure 5 is a block diagram illustrating the full range of femoral rods established according to the invention.

Afin de rendre plus concret l'objet de l'invention, on le décrit maintenant d'une manière non limitative en se référant aux exemples de réalisation des figures des dessins. In order to make the object of the invention more concrete, it is now described in a nonlimiting manner with reference to the exemplary embodiments of the figures of the drawings.

La série de tiges fémorales dysplasiques (1, 2 et 3) illustrées a la figure 1, la série de tiges fémorales droites (4, 5, 6 et 7) illustrées à la figure 2 et la série de tiges fémorales latéralisées (8 à 16) illustrées à la figure 3 sont constituées chacune de bas en haut d'une queue (la) à (16au d'impaction dans la cavité médullaire du fémur d'une collerette (lb) à (16b) d'appui sur le col du fémur réséqué et d'une portée conique (lc) à (16c) d'emmanchement d'une tête hémisphérique, raccordée à la collerette par un large congé (ld) à (16d). The series of dysplastic femoral stems (1, 2 and 3) illustrated in Figure 1, the series of straight femoral stems (4, 5, 6 and 7) illustrated in Figure 2 and the series of lateralized femoral stems (8 to 16 ) illustrated in Figure 3 are each made from bottom to top of a tail (la) to (16au of impaction in the medullary cavity of the femur of a flange (lb) to (16b) bearing on the neck of the resected femur and with a conical bearing (lc) to (16c) fitting of a hemispherical head, connected to the flange by a large fillet (ld) to (16d).

Selon une caractéristique de l'invention, et comme illustré en traits interrompus aux figures, la longueur et la largeur des queues sont établies selon une progression homothétique de toutes les cotes à l'intérieur d'une même série, cela à partir d'une face de référence qui est constituée par le chant intérieur (le) à (16e) des queues. D'autre part, certaines queues dans chaque série présentent une superposition de cotes dans la partie basse des queues. Le schéma de la figure 5 représente toute la gamme des tiges fémorales conformes à l'invention, c'est- & dire les trois tiges dysplasiques (1, 2, 3), les quatre tiges droites (4, 5, 6, 7) et les neuf tiges latéralisées (8 à 16).Comme on le voit, la superposition des cotes est matérialisée par des flèches qui indiquent les correspondances entre les tiges qui pour un volume diaphysaire donné, varient seulement en latéralisation. According to a characteristic of the invention, and as illustrated in broken lines in the figures, the length and the width of the tails are established according to a homothetic progression of all the dimensions within the same series, this from a reference face which is constituted by the inner edge (the) to (16th) of the tails. On the other hand, some tails in each series have a superimposition of dimensions in the lower part of the tails. The diagram in FIG. 5 represents the whole range of femoral stems in accordance with the invention, that is to say the three dysplastic stems (1, 2, 3), the four straight stems (4, 5, 6, 7) and the nine lateralized stems (8 to 16). As we can see, the superposition of the dimensions is materialized by arrows which indicate the correspondences between the stems which for a given diaphyseal volume, vary only in lateralization.

Dans le détail, et si on superpose les parties basses des queues on remarque - la tige dysplasique (3) correspond à la tige droite (4), - la tige droite (5) correspond à la tige latéralisée (8), - la tige droite (6) correspond aux tiges latéralisées t9) et (lus), - la tige droite (7) correspond aux tiges latéralisées (10) et (14) - la tige latéralisée (11) correspond a la tige latéralisée (15), - la tige latéralisée (12) correspond S la tige latéralisée (16)
A noter que les tiges latéralisées (13 a 16) sont des tiges de même nature que les tiges (8 à 12) mais avec un déport latéral plus important (de + 3, + 4, + 5,5 et + 7 mm).In detail, and if we superimpose the lower parts of the tails, we notice - the dysplastic stem (3) corresponds to the straight stem (4), - the straight stem (5) corresponds to the lateralized stem (8), - the stem straight (6) corresponds to the lateralized rods t9) and (read), - the straight rod (7) corresponds to the lateralized rods (10) and (14) - the lateralized rod (11) corresponds to the lateralized rod (15), - the lateralized rod (12) corresponds to the lateralized rod (16)
Note that the lateralized rods (13 to 16) are rods of the same nature as the rods (8 to 12) but with a greater lateral offset (+ 3, + 4, + 5.5 and + 7 mm).

Selon une autre caractéristique illustrée à la figure 4, les collerettes (lb) à (16b) de toutes ces tiges fémorales ont une forme périphérique ovoïde avec une partie saillante (a) entre la périphérie des queues et les congés de raccordement avec les portées coniques qui est limitée au côté interne, tandis que du côté extérieur les collerettes se raccordent au profil des queues par des courbes fuyantes et dégressives (b) sans débordement, ce qui évite toute aspérité et permet un raccordement arrondi avec le chant extérieur de la queue. According to another characteristic illustrated in FIG. 4, the collars (lb) to (16b) of all these femoral stems have an ovoid peripheral shape with a projecting part (a) between the periphery of the tails and the connecting leaves with the conical bearing surfaces which is limited to the internal side, while on the external side the flanges are connected to the profile of the tails by receding and decreasing curves (b) without overflow, which avoids any roughness and allows a rounded connection with the outer edge of the tail.

Enfin, une autre caractéristique se trouve dans le fait que les portées coniques (lc) å (16c) ont des dimensions déterminées pour recevoir des têtes hémisphériques de diamètres différents. Dans le détail, la longueur (L) du cône d'emmanchement proprement dit et son diamètre d'entrée (D) sont identiques pour toutes les tiges de la gamme, tandis que la cote (A) entre la face inférieure de la collerette et l'extrémité du cône, la cote (B) entre la face inférieure de la collerette et l'axe de la tête hémisphérique emmanchée, et la cote (C) mesurée parallèlement å l'axe de la tige entre l'axe du trou d'impaction et le bord extérieur de l'extrémité du cône, varient selon le type de tiges (droites, dysplasiques, latéralisées) et également dans la même série.  Finally, another characteristic is found in the fact that the conical bearings (lc) å (16c) have dimensions determined to receive hemispherical heads of different diameters. In detail, the length (L) of the fitting cone itself and its inlet diameter (D) are identical for all the rods in the range, while the dimension (A) between the underside of the flange and the end of the cone, the dimension (B) between the underside of the flange and the axis of the fitted hemispherical head, and the dimension (C) measured parallel to the axis of the rod between the axis of the hole d 'impaction and the outer edge of the tip of the cone, vary according to the type of rods (straight, dysplastic, lateralized) and also in the same series.

Claims (2)

REVENDICATIONS -1- Tiges fémorales pour prothèse totales de hanches du type comprenant de bas en haut une queue d'impaction dans la cavite médullaire du fémur, une collerette d'appui sur le col du fémur et une portée conique d'emmanchement pour une tête hémisphérique de coopération avec l'autre partie de l'articulation de la hanche, ces tiges étant réunies au sein d'une gamme, caractérisées en ce que les queues (la) à (16a) des tiges (1) à (16) sont établies selon une progression homothétique de toutes les cotes à l'intérieur d'une même série et à partir d'une face de référence constituée par les chants intérieurs (le) à (16e) des queues ; les cotes de la partie basse des queues se superposent pour certaines tiges de la gamme ;; les dimensions des portées coniques (lc) à (16c) sont déterminées pour recevoir des têtes hémisphériques de différents diamètres.-1- Femoral stems for total hip prosthesis of the type comprising from bottom to top an impaction tail in the medullary cavity of the femur, a support flange on the neck of the femur and a conical fitting surface for a hemispherical head of cooperation with the other part of the hip joint, these rods being united within a range, characterized in that the tails (la) to (16a) of the rods (1) to (16) are established according to a homothetic progression of all the dimensions within the same series and from a reference face constituted by the inner edges (the) to (16th) of the tails; the dimensions of the lower part of the tails overlap for certain rods in the range; the dimensions of the conical surfaces (lc) to (16c) are determined to receive hemispherical heads of different diameters. -2- Tiges fémorales selon la revendication 1, réunies au sein d'une gamme comprenant trois types de tiges dans chaque série, a savoir : des tiges dysplasiques (1, 2, 3), des tiges droites (4, 5, 6, 7) et des tiges latéralisées (8 à 16), caractérisées en ce que la superposition des cotes de la partie basse des queues est établie pour les tiges ci-après - la tige dysplasique (3) correspond à la tige droite (4), - la tige droite (5) correspond à la tige latéralisée (8), - la tige droite (6) correspond aux tiges latéralisées (9) et (13) - la tige droite < 7) correspond aux tiges latéralisées (10) et (14), - la tige latéralisée (11) correspond à la tige latéralisée (15) - la tige latéralisée (12) correspond à la tige latéralisée (16) -3- Tiges fémorales selon les revendications 1 et 2 ensemble, caractérisées en ce que les tiges latéralisées (1 & a 16) présentent respectivement un déport latéral supplémentaire de 3, 4, 5,5 et 7 mm par rapport aux tiges latéralisées (8 a 12).-2- Femoral stems according to claim 1, gathered within a range comprising three types of stems in each series, namely: dysplastic stems (1, 2, 3), straight stems (4, 5, 6, 7) and lateralized stems (8 to 16), characterized in that the superposition of the dimensions of the lower part of the tails is established for the following stems - the dysplastic stem (3) corresponds to the straight stem (4), - the straight rod (5) corresponds to the lateralized rod (8), - the straight rod (6) corresponds to the lateralized rods (9) and (13) - the straight rod <7) corresponds to the lateralized rods (10) and ( 14), - the lateralized rod (11) corresponds to the lateralized rod (15) - the lateralized rod (12) corresponds to the lateralized rod (16) -3- Femoral rods according to claims 1 and 2 together, characterized in that the lateralized rods (1 & a 16) respectively have an additional lateral offset of 3, 4, 5.5 and 7 mm compared to the rods l mineralized (8 to 12). -4- Tiges fémorales selon la revendication 1, caractérisées en ce que les collerettes d'appui (lb) à (16b) ont une forme périphérique ovoïde avec une partie saillante (a) entre la périphérie des queues (la) à (16a) et les congés de raccordement (nid) à (16du avec les portées coniques (lc) à < 16c) qui est limitée au côté interne, tandis que du côté extérieur les collerettes se raccordent au profil périphérique des queues par des courbes fuyantes et dégressives (b) sans débordement.-4- Femoral stems according to claim 1, characterized in that the support flanges (lb) to (16b) have an ovoid peripheral shape with a projecting part (a) between the periphery of the tails (la) to (16a) and the connecting leaves (nest) to (16du with the conical surfaces (lc) to <16c) which is limited to the internal side, while on the external side the flanges are connected to the peripheral profile of the tails by receding and decreasing curves ( b) without overflow. -5- Tiges fémorales selon la revendication 1, caractérisées en ce que pour recevoir des têtes hémisphériques de diamètres différents, les dimensions des portées coniques (lc) à < 16c) sont établies de la manière suivante - la longueur (L) du cône d'emmanchement proprement dit et son diamètre d'entrée (D) sont identiques pour toutes les tiges de la gamme, tandis que la cote (A) entre la face inférieure de la collerette et l'extrémité du cône, la cote (B) entre la face inférieure de la collerette et l'axe de la tête hémisphérique emmanchée, et la cote (C) mesurée parallèlement à l'axe de la tige entre l'axe du trou d'impaction et le bord extérieur de l'extrémité du cône, varient selon le type de tiges (droites, dysplasiques, latéralisées) et également dans la même série.  -5- Femoral stems according to claim 1, characterized in that to receive hemispherical heads of different diameters, the dimensions of the conical bearing surfaces (lc) to <16c) are established as follows - the length (L) of the cone d '' fitting itself and its inlet diameter (D) are identical for all the rods in the range, while the dimension (A) between the underside of the flange and the end of the cone, the dimension (B) between the underside of the collar and the axis of the fitted hemispherical head, and the dimension (C) measured parallel to the axis of the rod between the axis of the impact hole and the outer edge of the end of the cone , vary according to the type of stems (straight, dysplastic, lateralized) and also in the same series.
FR8816497A 1988-12-07 1988-12-07 FEMALE RODS FOR TOTAL HIP PROSTHESES Expired - Fee Related FR2639820B1 (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5133771A (en) * 1990-12-05 1992-07-28 University Of British Columbia Flexible mold for forming composite of a hip replacement component and a bone cement sleeve
FR2705884A1 (en) * 1993-06-03 1994-12-09 Rech Fabrication Et Set of femoral stems for total hip prosthesis
FR2716107A1 (en) * 1994-02-14 1995-08-18 Apricot Tige Femorale Femoral shaft implant for hip joint replacement prosthesis
WO1996015737A1 (en) * 1994-11-19 1996-05-30 Merck Patent Gmbh Joint prosthesis
FR2729292A1 (en) * 1995-01-12 1996-07-19 Medinov Sa Modular assembly of femoral rods for prosthetic hips
FR2735970A1 (en) * 1995-06-30 1997-01-03 Howmedica France Femoral surgical prosthetic insert
EP0974317A1 (en) * 1998-07-24 2000-01-26 BEJUI, Jacques Anchoring shaft for hip joint prosthesis and set of such shafts
US6155812A (en) * 1998-07-15 2000-12-05 Biomet, Inc Cement mold for a temporary implant
US6361731B1 (en) 1998-07-15 2002-03-26 Biomet, Inc. Method of forming a temporary implant
EP1062923A3 (en) * 1999-06-23 2002-10-16 Plus Endoprothetik Ag Hip joint endoprostheses system
FR2844994A1 (en) * 2002-09-27 2004-04-02 Medacta Int Sa ANATOMICAL FEMALE IMPLANT FOR HIP PROSTHESIS
FR2849770A1 (en) * 2003-01-13 2004-07-16 Buttet Michel De Hip joint prosthesis for neck fracture, has femoral implant associated to mark of lateralization, and mark defining lateral height/medial height of neck
EP1529500A1 (en) * 2003-11-07 2005-05-11 Bone and Joint Research S.A. Device for replacing the hip joint articulation
US8206143B2 (en) 2007-12-13 2012-06-26 Biomet Manufacturing Corp. Modular articulating cement spacer

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US8579985B2 (en) 2006-12-07 2013-11-12 Ihip Surgical, Llc Method and apparatus for hip replacement
US8974540B2 (en) 2006-12-07 2015-03-10 Ihip Surgical, Llc Method and apparatus for attachment in a modular hip replacement or fracture fixation device
EP2094197B8 (en) 2006-12-07 2016-03-09 IHip Surgical, LLC Apparatus for total hip replacement

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EP0201442A2 (en) * 1985-04-05 1986-12-17 France Implant Modular prosthetic device
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FR2636837A1 (en) * 1988-09-23 1990-03-30 Cremascoli Spa G Hip prosthesis which can be used without cement

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5133771A (en) * 1990-12-05 1992-07-28 University Of British Columbia Flexible mold for forming composite of a hip replacement component and a bone cement sleeve
FR2705884A1 (en) * 1993-06-03 1994-12-09 Rech Fabrication Et Set of femoral stems for total hip prosthesis
FR2716107A1 (en) * 1994-02-14 1995-08-18 Apricot Tige Femorale Femoral shaft implant for hip joint replacement prosthesis
WO1996015737A1 (en) * 1994-11-19 1996-05-30 Merck Patent Gmbh Joint prosthesis
US5888206A (en) * 1994-11-19 1999-03-30 Merck Patent Gmbh Joint prothesis
FR2729292A1 (en) * 1995-01-12 1996-07-19 Medinov Sa Modular assembly of femoral rods for prosthetic hips
FR2735970A1 (en) * 1995-06-30 1997-01-03 Howmedica France Femoral surgical prosthetic insert
US6155812A (en) * 1998-07-15 2000-12-05 Biomet, Inc Cement mold for a temporary implant
US6361731B1 (en) 1998-07-15 2002-03-26 Biomet, Inc. Method of forming a temporary implant
FR2781365A1 (en) * 1998-07-24 2000-01-28 Jacques Bejui ANCHORING ROD FOR HIP JOINT PROSTHESIS AND SET OF SUCH RODS
EP0974317A1 (en) * 1998-07-24 2000-01-26 BEJUI, Jacques Anchoring shaft for hip joint prosthesis and set of such shafts
EP1062923A3 (en) * 1999-06-23 2002-10-16 Plus Endoprothetik Ag Hip joint endoprostheses system
FR2844994A1 (en) * 2002-09-27 2004-04-02 Medacta Int Sa ANATOMICAL FEMALE IMPLANT FOR HIP PROSTHESIS
FR2849770A1 (en) * 2003-01-13 2004-07-16 Buttet Michel De Hip joint prosthesis for neck fracture, has femoral implant associated to mark of lateralization, and mark defining lateral height/medial height of neck
EP1614401A1 (en) * 2003-01-13 2006-01-11 Michel De Buttet Hip prothesis and method of determining the hight of a hip prothesis.
EP1529500A1 (en) * 2003-11-07 2005-05-11 Bone and Joint Research S.A. Device for replacing the hip joint articulation
US8206143B2 (en) 2007-12-13 2012-06-26 Biomet Manufacturing Corp. Modular articulating cement spacer
US8920152B2 (en) 2007-12-13 2014-12-30 Biomet Manufacturing, Llc Modular articulating cement spacer

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