FR2810232A1 - Replacement hip joint assembly comprises femoral shank and extraction tool with interlocking surfaces - Google Patents

Replacement hip joint assembly comprises femoral shank and extraction tool with interlocking surfaces Download PDF

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Publication number
FR2810232A1
FR2810232A1 FR0008109A FR0008109A FR2810232A1 FR 2810232 A1 FR2810232 A1 FR 2810232A1 FR 0008109 A FR0008109 A FR 0008109A FR 0008109 A FR0008109 A FR 0008109A FR 2810232 A1 FR2810232 A1 FR 2810232A1
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tool
rod
stem
profile
assembly according
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Granted
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FR0008109A
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FR2810232B1 (en
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Buttet Michel De
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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
    • A61B17/1668—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4607—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of hip femoral endoprostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14—Surgical saws ; Accessories therefor
    • A61B17/15—Guides therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1604—Chisels; Rongeurs; Punches; Stamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • 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
    • A61F2002/30112—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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30154—Convex polygonal shapes square
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3082—Grooves
    • A61F2002/30827—Plurality of grooves
    • A—HUMAN NECESSITIES
    • 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4619—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof for extraction
    • 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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    • 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
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    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/006—Additional features; Implant or prostheses properties not otherwise provided for modular
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    • A—HUMAN NECESSITIES
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    • A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite

Abstract

The assembly consists of a femoral shank (1) with lengthwise square-section grooves (1a) in at least two of its adjacent surfaces, and an extraction tool with a profile section which matches that of the shank and a surface projection able to engage with a lengthwise groove. The tool is in the form of a gouge designed to be inserted into the medullary canal of the femur between the prosthesis shank and the femur's inner wall, and can be used in pairs.

Description

L'invention se rattache au secteur technique de l'orthopédie et plus particulièrement de l'arthrodèse de la hanche. The invention relates to the technical field of orthopedics and more particularly to the arthrodesis of the hip.

L'arthroplastie de la hanche, au moyen de tiges fémorales non cimentées est de plus en plus utilisée. La tige utilisée peut etre du type symétrique ou du type anatomique. Afin d'éviter tout micro mouvement susceptible d'engendrer une douleur postopératoire, la tige fémorale présente généralement différents types de revêtement à haute porosité pour créer la repousse osseuse sous charge. Hip arthroplasty using uncemented femoral stems is being used more and more. The rod used may be symmetrical type or anatomical type. In order to avoid any micro-movement that can cause postoperative pain, the femoral stem generally has different types of high-porosity coatings to create bone regrowth under load.

Cette solution est très intéressante, mais rend très difficile l'ablation de la tige fémorale. Il est souvent nécessaire de couper en deux le fémur, dans le sens longitudinal (voie transfémorale) pour procéder a l'extraction de la tige. La remise en place d'une nouvelle prothèse s'en trouve alors très difficile des complications longues pour le patient. This solution is very interesting, but makes it very difficult to remove the femoral stem. It is often necessary to cut in half the femur, in the longitudinal direction (transfemoral way) to proceed with the extraction of the stem. The repositioning of a new prosthesis is then very difficult long complications for the patient.

L'invention s'est fixée pour but de remédier à ces inconvénients, de manière simple, sûre, efficace et rationnelle. The object of the invention is to remedy these disadvantages in a simple, safe, effective and rational manner.

problème que se propose de résoudre l'invention de pouvoir extraire facilement la tige fémorale. problem that proposes to solve the invention to easily extract the femoral stem.

Pour résoudre un tel problème, il a été conçu et ' au point un ensemble orthopédique comprenant une tige fémorale et un outil d'extraction de conception spécifique et complémentaire. Selon l'invention - la tige présente, sur au moins deux de ses faces adjacentes, moins une empreinte en creux<B>;</B> - l'outil d'extraction d'épaisseur limitée présente un profil section de forme congruente à celle de la tige en étant apte à être introduit dans le canal médullaire du fémur, entre ladite tige et la paroi interne fémur ; - la face interne de l'outil présente, au moins une empreinte en relief coopérant avec la ou les empreintes en creux de la tige pour permettre de désolidariser la tige de la corticale osseuse sous un effet d'enfoncement dudit outil. To solve such a problem, it has been designed and developed an orthopedic assembly comprising a femoral stem and a specific and complementary design extraction tool. According to the invention - the rod has, on at least two of its adjacent faces, less than a hollow imprint <B>; </ B> - the extraction tool of limited thickness has a section profile of congruent shape to that of the rod being adapted to be introduced into the medullary canal of the femur, between said rod and the inner wall femur; - The inner face of the tool has at least one embossed recess cooperating with the indentations or indentations of the rod to allow to separate the rod of the bone cortical under a depressing effect of said tool.

Avantageusement, chacune des empreintes de la tige est constituée par une rainure longitudinale de section carrée. La rainure s'étend sur la totalité la hauteur de la tige sur chacune de ses faces antérieure, postérieure, interne et externe. Advantageously, each of the imprints of the rod is constituted by a longitudinal groove of square section. The groove extends over the entire height of the rod on each of its anterior, posterior, internal and external faces.

Pour résoudre le problème posé d'assurer une liaison temporaire et un laminage de l'outil par rapport à la tige, l'empreinte en relief l'outil est constituée par un ergot formé sur une longueur limitée à l'extrémité de la partie d'introduction de l'outil. To solve the problem of ensuring a temporary connection and a rolling of the tool relative to the rod, the embossed impression the tool is constituted by a lug formed on a limited length at the end of the part d introduction of the tool.

Pour résoudre le problème posé de provoquer une extraction de la tige au fur et à mesure de l'enfoncement de l'outil, ce dernier est une gouge. Selon une autre caractéristique, l'ensemble orthopédique présente, pour chaque taille de tiges fémorales, au moins deux gouges, l'une de profil congruent au profil des faces interne et externe de la tige, l'autre de profil congruent au profil des faces antérieure et postérieure de la tige. L'invention est exposée ci-après plus en détail à l'aide figures des dessins annexés dans lesquels - la figure 1 est une vue de face d'une tige fémorale selon l'invention ; - la figure 2 est une vue en coupe transversale considérée selon la ligne 2-2 de figure 1 ; - la figure 3 est une vue en perspective d'un outil d'extraction selon l'invention sous forme d'une gouge<B>;</B> - la figure 4 est une vue en coupe transversale montrant l'extraction de la tige fémorale implantée dans le canal médullaire au moyen d'une gouge. To solve the problem posed to cause extraction of the rod as the tool is depressed, the latter is a gouge. According to another characteristic, the orthopedic assembly has, for each size of femoral stems, at least two gouges, one of profile congruent to the profile of the inner and outer faces of the stem, the other of profile congruent to the profile of the faces anterior and posterior of the stem. The invention is described below in more detail with the aid of the figures of the accompanying drawings in which: - Figure 1 is a front view of a femoral stem according to the invention; - Figure 2 is a cross-sectional view taken along the line 2-2 of Figure 1; FIG. 3 is a perspective view of an extraction tool according to the invention in the form of a gouge; FIG. 4 is a cross-sectional view showing the extraction of the Femoral stem implanted in the medullary canal by means of a gouge.

L'ensemble orthopédique comprend, selon l'invention, tige fémorale ( et un outil (2) d'extraction de ladite tige. La tige (1) est avantageusement revêtue d'hydroxyapatite ou autre revêtement et présente, sur chacune de ses faces antérieure, postérieure, interne et externe au moins une empreinte en creux (la) sous forme d'une rainure. Chacune rainures (la) , revêtues ou non, est de forme polygonale, notamment de section carrée. Avantageusement, chacune des rainures (la) est formée sensiblement au niveau de la partie médiane de la face considérée de la tige fémorale (1). The orthopedic assembly comprises, according to the invention, a femoral stem (and a tool (2) for extracting said stem.The stem (1) is advantageously coated with hydroxyapatite or other coating and has on each of its anterior faces , posteriorly, internally and externally at least one indentation (la) in the form of a groove, each groove (la), coated or not, is of polygonal shape, in particular of square section. is formed substantially at the middle part of the considered side of the femoral stem (1).

L'outil d'extraction (2) présente un profil en section de forme congruente à celle de la tige (1). Cet outil est conformé pour être introduit dans le canal médullaire du fémur, entre la tige (1) et la paroi interne du fémur. La face interne de l'outil (2) présente au moins une empreinte en relief (2a) conformée en section pour coopérer avec la ou les empreintes en creux (la) de la tige fémorale (1). Dans ce but, l'empreinte en relief (la) est constituée par une nervure, notamment sous forme d'un ergot, formé à l'une des extrémités de la partie d'introduction de l'outil (2) et sur une longueur limitée. The extraction tool (2) has a sectional profile of congruent shape to that of the rod (1). This tool is shaped to be introduced into the medullary canal of the femur, between the rod (1) and the inner wall of the femur. The inner face of the tool (2) has at least one raised recess (2a) shaped in section to cooperate with the indentation (s) (la) of the femoral stem (1). For this purpose, the embossed print (la) is constituted by a rib, in particular in the form of a lug, formed at one end of the insertion portion of the tool (2) and over a length limited.

Selon l'invention, le but recherché est de provoquer, après introduction de l'outil (2) dans le canal médullaire du fémur entre tige (1) et paroi interne du fémur (figure 4), et sous un effet d'enfoncement de l'outil (2), la désolidarisation du revêtement de la tige (1) par rapport à la corticale osseuse reconstituée (C). Dans ce but, l'outil est gouge presentant, par définition, un profil tranchant et biseauté. According to the invention, the aim is to provoke, after insertion of the tool (2) into the medullary canal of the femur between the shaft (1) and the internal wall of the femur (FIG. 4), and under a sinking effect of the tool (2), the separation of the coating of the stem (1) relative to the reconstituted bone cortical (C). For this purpose, the tool is gouge presenting, by definition, a sharp profile and bevelled.

Compte tenu du profil des faces antéro-postérieures et des faces interne et externe, l'ensemble orthopédique présente au moins deux gouges de types différents par taille de tige, l'une de profil congruent au profil des faces interne et externe de la tige, l'autre de profil congruent au profil des faces antérieure et postérieure de la tige. Given the profile of the anteroposterior faces and the inner and outer faces, the orthopedic assembly has at least two gouges of different types by stem size, one of profile congruent to the profile of the inner and outer faces of the stem, the other of profile congruent with the profile of the anterior and posterior faces of the stem.

Compte tenu des caractéristiques de l'invention, au moment de l'ablation de la tige fémorale (1), en partie intra-médulaire, on glisse l'ergot dans la rainure correspondante de la face considérée de la tige et on frappe par tout moyen sur l'extrémité de la gouge qui va glisser entre la tige et la corticale, la gouge étant parfaitement guidée. In view of the characteristics of the invention, at the time of removal of the femoral stem (1), in part intra-medularly, the pin is slipped into the corresponding groove of the considered face of the stem and struck by all medium on the end of the gouge that will slide between the stem and the cortex, the gouge being perfectly guided.

Une fois désolidarisée, la tige est retirée par son col à l'aide de tout outil habituellement utilisée. Ces dispositions permettent au moyen d'un jeu de gouges à tailles homothétiques de désolidariser toute tige non cimentée de la corticale osseuse. Once disconnected, the stem is removed by its collar using any tool usually used. These arrangements make it possible, by means of a set of gouges with homothetic sizes, to separate any uncemented stem from the cortical bone.

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

Claims (1)

REVENDICATIONS Ensemble orthopédique pour l'arthrodèse de la hanche comprenant une tige fémorale (1) et un outil d'extraction (2) de ladite tige, caractérisé en ce - la tige (1) présente, sur au moins deux de ses faces adjacentes, au moins une empreinte en creux<B>(l</B>a) ; l'outil d'extraction (2) présente un profil en section de forme congruente à celle de la tige en étant apte à être introduit dans le canal médullaire du fémur, entre ladite tige (1) et la paroi interne du fémur<B>;</B> la face interne de l'outil (2) présente, au moins une empreinte relief (2a) coopérant avec la ou les empreintes en creux (la) de la tige (1) pour permettre de guider ledit outil sous un effet d'enfoncement et de désolidariser la tige de la corticale osseuse. -2- Ensemble orthopédique selon la revendication 1, caractérise en ce que chacune des empreintes (la) de la tige (1) est constituée par une rainure longitudinale de section carrée. Ensemble orthopédique selon la revendication 2, caractérisé en ce que la rainure (la) s'étend sur la totalité de la hauteur de la tige et sur chacune de faces antérieure, postérieure, interne, externe. Ensemble orthopédique selon la revendication 1, caractérisé en ce que l'empreinte en relief (2a) de l'outil (2) est constituée par un ergot formé sur une longueur limitée si besoin à l'extrémité la partie d'introduction de l'outil. -S- Ensemble orthopédique selon la revendication 1, caractérisé en ce que l'outil (2) est une gouge. -6- Ensemble orthopédique selon la revendication 1, caractérisé en ce qu'il présente au moins deux gouges (2), l'une de profil congruent au profil des faces interne et externe de la tige (1), l'autre profil congruent au profil des faces antérieure et postérieure de la tige.An orthopedic assembly for hip arthrodesis comprising a femoral stem (1) and an extraction tool (2) of said rod, characterized in that - the rod (1) has, on at least two of its adjacent faces, at least one indentation <B> (l </ B> a); the extraction tool (2) has a sectional profile of congruent shape to that of the rod being adapted to be introduced into the medullary canal of the femur, between said rod (1) and the inner wall of the femur <B> </ B> the inner face of the tool (2) has at least one embossed fingerprint (2a) cooperating with the recessed fingerprint (s) (1a) of the rod (1) to allow said tool to be guided under a depressing effect and dissociating the stem of the cortical bone. -2- orthopedic assembly according to claim 1, characterized in that each of the impressions (la) of the rod (1) is constituted by a longitudinal groove of square section. Orthopedic assembly according to Claim 2, characterized in that the groove (1a) extends over the entire height of the stem and on each of the anterior, posterior, internal and external faces. Orthopedic assembly according to claim 1, characterized in that the relief impression (2a) of the tool (2) consists of a lug formed on a limited length if necessary at the end of the insertion portion of the tool. -S- orthopedic assembly according to claim 1, characterized in that the tool (2) is a gouge. -6- orthopedic assembly according to claim 1, characterized in that it has at least two gouges (2), one of congruent profile profile of the inner and outer faces of the rod (1), the other congruent profile to the profile of the anterior and posterior faces of the stem.
FR0008109A 2000-06-19 2000-06-19 ORTHOPEDIC ASSEMBLY FOR HIP ARTHRODESIS Expired - Fee Related FR2810232B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557142A1 (en) * 2003-12-30 2005-07-27 Depuy Products, Inc. Soft tissue attachment system
FR2865382A1 (en) * 2004-01-23 2005-07-29 Sem Sa Femoral rod for hip prosthesis, has grooves that extend longitudinally from its proximal end till vicinity of distal end, and tapping that is provided at level of lug for ablation of rod
WO2006028382A2 (en) * 2004-09-08 2006-03-16 Einar Sudmann Prosthetic element
FR2923375A1 (en) * 2007-11-14 2009-05-15 Fournitures Hospitalieres Ind Prosthetic femoral rod for patient, has medullary portion comprising rough zone and smooth zone covering coatings favoring bone regrowth in proximal and distal portions of medullary portion, respectively
WO2012038698A1 (en) * 2010-09-22 2012-03-29 Orthosonics Limited Improved femoral implant revision tool
EP2710982A1 (en) * 2012-09-21 2014-03-26 WALDEMAR LINK GmbH & Co. KG Joint implant
FR3077198A1 (en) * 2018-01-26 2019-08-02 Conri Pierre Emmanuel Agissant Au Nom Et Pour Le Compte De La Societe Evok En Cours De Formation FEMORAL COMPONENT FOR FORMING A HIP PROSTHESIS

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5318570A (en) * 1989-01-31 1994-06-07 Advanced Osseous Technologies, Inc. Ultrasonic tool
DE4416377A1 (en) * 1993-05-15 1994-11-17 Ueth & Haug Gmbh Device for removing endoprostheses
EP0978262A1 (en) * 1996-12-23 2000-02-09 Johnson &amp; Johnson Professional, Inc. Alignment guide for slotted prosthetic stem

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5318570A (en) * 1989-01-31 1994-06-07 Advanced Osseous Technologies, Inc. Ultrasonic tool
DE4416377A1 (en) * 1993-05-15 1994-11-17 Ueth & Haug Gmbh Device for removing endoprostheses
EP0978262A1 (en) * 1996-12-23 2000-02-09 Johnson &amp; Johnson Professional, Inc. Alignment guide for slotted prosthetic stem

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7476255B2 (en) 2003-12-30 2009-01-13 Depuy Products, Inc. Soft tissue attachment system and method
EP1557142A1 (en) * 2003-12-30 2005-07-27 Depuy Products, Inc. Soft tissue attachment system
AU2004242493B2 (en) * 2003-12-30 2009-12-24 Depuy Products, Inc. Soft tissue attachment system and method
FR2865382A1 (en) * 2004-01-23 2005-07-29 Sem Sa Femoral rod for hip prosthesis, has grooves that extend longitudinally from its proximal end till vicinity of distal end, and tapping that is provided at level of lug for ablation of rod
US7875083B2 (en) 2004-09-08 2011-01-25 Einar Sudmann Prosthetic element
EA009582B1 (en) * 2004-09-08 2008-02-28 Эйнар Судманн Prosthetic element
WO2006028382A3 (en) * 2004-09-08 2006-06-15 Einar Sudmann Prosthetic element
WO2006028382A2 (en) * 2004-09-08 2006-03-16 Einar Sudmann Prosthetic element
FR2923375A1 (en) * 2007-11-14 2009-05-15 Fournitures Hospitalieres Ind Prosthetic femoral rod for patient, has medullary portion comprising rough zone and smooth zone covering coatings favoring bone regrowth in proximal and distal portions of medullary portion, respectively
WO2012038698A1 (en) * 2010-09-22 2012-03-29 Orthosonics Limited Improved femoral implant revision tool
CN103269659A (en) * 2010-09-22 2013-08-28 奥思索尼克斯有限公司 Improved femoral implant revision tool
CN103269659B (en) * 2010-09-22 2015-11-25 奥思索尼克斯有限公司 The femoral implant revision tool improved
US9198776B2 (en) 2010-09-22 2015-12-01 Orthosonics Limited Femoral implant revision tool
EP2710982A1 (en) * 2012-09-21 2014-03-26 WALDEMAR LINK GmbH & Co. KG Joint implant
WO2014044574A1 (en) * 2012-09-21 2014-03-27 Waldemar Link Gmbh & Co. Kg Joint implant
FR3077198A1 (en) * 2018-01-26 2019-08-02 Conri Pierre Emmanuel Agissant Au Nom Et Pour Le Compte De La Societe Evok En Cours De Formation FEMORAL COMPONENT FOR FORMING A HIP PROSTHESIS

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