FR2960605A1 - Junction system for connecting tubular diaphyseal part to metaphyseal part of femoral stem of modular transfemoral prosthesis, has female junction unit with cavity provided with bore at internal wall, where bore is complementary to wedge - Google Patents
Junction system for connecting tubular diaphyseal part to metaphyseal part of femoral stem of modular transfemoral prosthesis, has female junction unit with cavity provided with bore at internal wall, where bore is complementary to wedge Download PDFInfo
- Publication number
- FR2960605A1 FR2960605A1 FR1002311A FR1002311A FR2960605A1 FR 2960605 A1 FR2960605 A1 FR 2960605A1 FR 1002311 A FR1002311 A FR 1002311A FR 1002311 A FR1002311 A FR 1002311A FR 2960605 A1 FR2960605 A1 FR 2960605A1
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- FR
- France
- Prior art keywords
- bore
- junction
- male
- complementary
- modular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- 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
- A61F2002/30316—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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30364—Rotation about the common longitudinal axis
- A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/3672—Intermediate parts of shafts
- A61F2002/3674—Connections of proximal parts to distal parts
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
La présente invention concerne un système de jonction de type conique, en particulier pour assurer la jonction de différentes parties de prothèses. La plupart des prothèses fémorales sont constituées d'un premier module, nommé cupule, lié à la cavité cotyloïdienne et d'un second module, nommé tige fémorale, lié au fémur. La liaison entre ces deux modules est faite via un élément sphérique, qui vient prendre place dans une cavité de la cupule. The present invention relates to a conical type joining system, in particular to ensure the joining of different parts of prostheses. Most femoral prostheses consist of a first module, called cupule, linked to the acetabular cavity and a second module, called femoral stem, linked to the femur. The connection between these two modules is made via a spherical element, which comes to take place in a cavity of the cup.
La structure d'une tige fémorale peut être décrite arbitrairement comme la succession de deux parties : - La partie diaphysaire, de forme sensiblement tubulaire, qui vient s'insérer à l'intérieur de la diaphyse du fémur. - La partie métaphysaire, qui vient s'implanter dans la métaphyse fémorale et qui contient en sa partie proximale l'emplacement (nommé col) sur lequel va être placée la tête de la prothèse. Il existe plusieurs types de tiges fémorales. Il s'agit notamment des tiges fémorales constituées d'une seule pièce ce qui leur confère une résistance importante aux contraintes mécaniques. Toutefois ce type de tiges fémorales est complexe à produire. De plus, les morphologies des patients sont variables et il est donc nécessaire de produire autant de tailles et formes de prothèses qu'il existe de morphologies différentes. Il existe également des prothèses fémorales dont la tige fémorale est constituée de plusieurs modules qui sont assemblés entre eux avant utilisation. The structure of a femoral stem can be described arbitrarily as the succession of two parts: - The diaphyseal part, of substantially tubular shape, which is inserted inside the diaphysis of the femur. - The metaphyseal part, which comes to implant in the femoral metaphysis and which contains in its proximal part the location (named neck) on which will be placed the head of the prosthesis. There are several types of femoral stems. These include femoral stems consist of a single piece which gives them significant resistance to mechanical stresses. However this type of femoral stems is complex to produce. Moreover, the morphologies of the patients are variable and it is therefore necessary to produce as many sizes and shapes of prostheses as there are different morphologies. There are also femoral prostheses whose femoral stem consists of several modules that are assembled together before use.
Par exemple le brevet US 5,725,592 décrit une tige fémorale composée de trois modules distincts assemblés les uns dans les autres via des jonctions coniques. Ce type de For example, US Pat. No. 5,725,592 describes a femoral stem composed of three distinct modules assembled into each other via conical junctions. This kind of
HRV002-FR-006 TEXTE DEPOSE SO/ML - 2 - prothèse fémorale requiert des investissements moins lourds que les prothèses monobloc et l'utilisation de différents modules permet d'obtenir une infinité de tailles de prothèses à partir d'un nombre limité de modules. HRV002-FR-006 TEXTE REMOVAL SO / ML - 2 - Femoral prosthesis requires less investment than monobloc prostheses and the use of different modules allows to obtain an infinite number of prosthesis sizes from a limited number of modules .
Toutefois, les prothèses fémorales sont soumises à de nombreuses contraintes mécaniques. La présence de jonctions dans les prothèses fémorales modulaires les rend particulièrement sensibles à la torsion, à la compression et à la flexion. C'est notamment le cas des jonctions coniques qui, de part leur structure, sont particulièrement sensibles à la torsion. La présente invention se propose de fournir un nouveau système de jonction conique permettant notamment la réalisation de tiges fémorales modulaires présentant une résistance accrue à la torsion. Ainsi la présente invention a notamment pour objet un système de jonction comprenant un moyen de jonction mâle conique ou tronconique, un moyen de jonction femelle comprenant une cavité respectivement conique ou tronconique complémentaire au moyen de jonction mâle remarquable en ce que ledit moyen de jonction male comporte une clavette, disposée parallèlement à l'axe longitudinal dudit moyen de jonction mâle et faisant saillie au delà de l'extrémité distale dudit élément mâle et ce que ladite cavité conique ou tronconique comprend dans sa paroi interne un alésage complémentaire à ladite clavette. Selon un mode de réalisation préféré de l'invention, ladite clavette fait également saillie sur tout ou partie de la paroi latérale dudit élément de jonction mâle. However, femoral prostheses are subject to many mechanical constraints. The presence of junctions in modular femoral prostheses makes them particularly sensitive to torsion, compression and flexion. This is particularly the case of conical junctions which, because of their structure, are particularly sensitive to torsion. The present invention proposes to provide a new conical junction system allowing in particular the realization of modular femoral rods having increased resistance to torsion. Thus, the present invention particularly relates to a junction system comprising a conical or frustoconical male junction means, a female junction means comprising a respectively conical or frustoconical cavity complementary to the male junction means remarkable in that said male junction means comprises a key, arranged parallel to the longitudinal axis of said male junction means and projecting beyond the distal end of said male member and that said conical or frustoconical cavity comprises in its inner wall a bore complementary to said key. According to a preferred embodiment of the invention, said key also projects over all or part of the side wall of said male joining element.
Dans ce mode de réalisation préféré, la paroi latérale de ladite cavité conique ou tronconique comprend une goujure longitudinale complémentaire à ladite saillie. La présente invention concerne également une prothèse fémorale modulaire remarquable en ce qu'elle comprend un In this preferred embodiment, the side wall of said conical or frustoconical cavity comprises a longitudinal flute complementary to said projection. The present invention also relates to a modular femoral prosthesis which is remarkable in that it comprises a
HRV002-FR-006 TEXTE DEPOSE SO/ML - 3 - système de jonction selon l'invention. Selon un mode de réalisation préféré de l'invention, ledit système de jonction relie la partie diaphysaire à la partie métaphysaire de la tige fémorale. HRV002-FR-006 TEXTE REMOVAL SO / ML - 3 - joining system according to the invention. According to a preferred embodiment of the invention, said connecting system connects the diaphyseal part to the metaphyseal part of the femoral stem.
Bien que particulièrement adapté à l'assemblage des tiges fémorales modulaires, le système de jonction selon l'invention est utilisable pour la jonction de tous types de pièces. L'exemple ci-dessous présente un mode de réalisation 10 préféré et non limitatif de l'invention, qui sera décrit en référence aux dessins annexés, sur lesquels : - la figure 1 représente une coupe longitudinale d'une prothèse fémorale comprenant un moyen de jonction mâle selon l'invention. 15 - la figure 2 représente une coupe longitudinale d'un mode de réalisation d'un moyen de jonction mâle selon l'invention. - la figure 3 représente une coupe transversale d'un mode de réalisation d'un moyen de jonction mâle selon 20 l'invention. La partie métaphysaire 1 de la tige fémorale comprend, de l'extrémité distale à l'extrémité proximale, le col 2 sur lequel la tête sphérique (non représentée) est mise en place, un corps tulipé et le moyen de jonction 25 mâle 3 tronconique. Comme détaillé à la figure 2, ledit moyen de jonction mâle 3 comprend une paroi concentrique dans laquelle est situé un alésage longitudinal 5 apte à recevoir la clavette 6. 30 Comme représenté figure 3, ledit alésage 5 est placé de telle sorte qu'une fois en place, la clavette 6 va faire saillie sur une partie de la paroi latérale du moyen de jonction mâle. La partie diaphysaire 7 comprend, en son extrémité Although particularly suited to the assembly of modular femoral rods, the joining system according to the invention is used for joining all types of parts. The example below shows a preferred and non-limiting embodiment of the invention, which will be described with reference to the accompanying drawings, in which: - Figure 1 shows a longitudinal section of a femoral prosthesis comprising a means of male junction according to the invention. FIG. 2 represents a longitudinal section of an embodiment of a male junction means according to the invention. - Figure 3 shows a cross section of an embodiment of a male junction means according to the invention. The metaphyseal portion 1 of the femoral stem comprises, from the distal end to the proximal end, the neck 2 on which the spherical head (not shown) is put in place, a tulip body and the frustoconical male junction means 3. . As detailed in FIG. 2, said male junction means 3 comprises a concentric wall in which a longitudinal bore 5 is located able to receive the key 6. As shown in FIG. 3, said bore 5 is placed so that once in place, the key 6 will project on a portion of the side wall of the male junction means. The diaphyseal portion 7 comprises, at its end
H RV002-FR-006 TEXTE DEPOSE SO/ML - 4 - proximale, un moyen de jonction femelle 8 constitué d'une cavité tronconique complémentaire au moyen de jonction mâle 3. En outre, la cavité comporte un alésage 9 apte à recevoir la portion de la clavette 6 faisant saillie au delà de l'extrémité distale dudit élément mâle 3 et une tranchée longitudinale 10 apte à recevoir la partie de la clavette 6 faisant saillie sur la paroi latérale du moyen de jonction mâle 3. H RV002-FR-006 TEXTE REMOVAL SO / ML - 4 - proximal, a female junction means 8 consisting of a frustoconical cavity complementary to the male junction means 3. In addition, the cavity comprises a bore 9 adapted to receive the portion the key 6 protruding beyond the distal end of said male element 3 and a longitudinal trench 10 adapted to receive the portion of the key 6 protruding from the side wall of the male junction means 3.
On comprend bien l'avantage procuré par la présence de la clavette dans la jonction selon l'invention : d'une part, le positionnement relatif des parties de la tige fémorale et leur emboitement au niveau de la jonction est grandement facilité, la clavette assurant une fonction de guidage à la fois en index et en orientation angulaire ; on va ainsi pouvoir obtenir des corrections prothétiques adaptées et prédéterminées en fonction de l'angle d'antéversion physiologique de chaque patient. D'autre part, la clavette va bloquer les mouvements de rotation relatifs au niveau de la jonction et va supporter une partie des efforts de torsion, améliorant ainsi la résistance en torsion des éléments joints. Par ailleurs, si l'application de la jonction conique à la réalisation de prothèses fémorales modulaires est particulièrement préférée, on comprend bien que la jonction conique selon l'invention peut être appliquée à d'autres types de prothèses réalisées en plusieurs parties. Enfin, il va de soi que la présente invention n'est pas limitée à l'exemple de réalisation préférentiel et à la mise en oeuvre décrits, et qu'elle peut être modifiée ou adaptée en fonction des besoins ou des exigences particulières, sans pour autant sortir du cadre de l'invention. The advantage provided by the presence of the key in the junction according to the invention is clearly understood: on the one hand, the relative positioning of the parts of the femoral stem and their interlocking at the junction is greatly facilitated, the key ensuring a guiding function at the same time in index and in angular orientation; It will thus be possible to obtain appropriate and predetermined prosthetic corrections as a function of the physiological anteversion angle of each patient. On the other hand, the key will block the relative rotational movements at the junction and will support a portion of the torsional forces, thereby improving the torsional strength of the joined elements. Moreover, if the application of the conical junction to the realization of modular femoral prostheses is particularly preferred, it is well understood that the conical junction according to the invention can be applied to other types of prostheses made in several parts. Finally, it goes without saying that the present invention is not limited to the preferred embodiment and to the implementation described, and that it can be modified or adapted according to particular needs or requirements, without as far out of the scope of the invention.
HRV002-FR-006 TEXTE DÉPOSE SO/ML HRV002-EN-006 TEXT REMOVAL SO / ML
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1002311A FR2960605A1 (en) | 2010-06-01 | 2010-06-01 | Junction system for connecting tubular diaphyseal part to metaphyseal part of femoral stem of modular transfemoral prosthesis, has female junction unit with cavity provided with bore at internal wall, where bore is complementary to wedge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1002311A FR2960605A1 (en) | 2010-06-01 | 2010-06-01 | Junction system for connecting tubular diaphyseal part to metaphyseal part of femoral stem of modular transfemoral prosthesis, has female junction unit with cavity provided with bore at internal wall, where bore is complementary to wedge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2960605A1 true FR2960605A1 (en) | 2011-12-02 |
Family
ID=43414922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1002311A Withdrawn FR2960605A1 (en) | 2010-06-01 | 2010-06-01 | Junction system for connecting tubular diaphyseal part to metaphyseal part of femoral stem of modular transfemoral prosthesis, has female junction unit with cavity provided with bore at internal wall, where bore is complementary to wedge |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2960605A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5314479A (en) * | 1986-08-15 | 1994-05-24 | Depuy Inc. | Modular prosthesis |
| GB2347353A (en) * | 1999-05-07 | 2000-09-06 | Corin Medical Ltd | Prosthesis |
| DE102004052143A1 (en) * | 2003-10-22 | 2005-05-19 | Deckner, André Georges | Joint prosthesis used as a hip prosthesis comprises an aligning part fixed to a fixing part and separating the fixing part and a hinged part |
-
2010
- 2010-06-01 FR FR1002311A patent/FR2960605A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5314479A (en) * | 1986-08-15 | 1994-05-24 | Depuy Inc. | Modular prosthesis |
| GB2347353A (en) * | 1999-05-07 | 2000-09-06 | Corin Medical Ltd | Prosthesis |
| DE102004052143A1 (en) * | 2003-10-22 | 2005-05-19 | Deckner, André Georges | Joint prosthesis used as a hip prosthesis comprises an aligning part fixed to a fixing part and separating the fixing part and a hinged part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20130228 |