FR2710835A1 - Femoral shaft of a hip prosthesis - Google Patents

Femoral shaft of a hip prosthesis Download PDF

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Publication number
FR2710835A1
FR2710835A1 FR9312315A FR9312315A FR2710835A1 FR 2710835 A1 FR2710835 A1 FR 2710835A1 FR 9312315 A FR9312315 A FR 9312315A FR 9312315 A FR9312315 A FR 9312315A FR 2710835 A1 FR2710835 A1 FR 2710835A1
Authority
FR
France
Prior art keywords
rod
holes
members
hip prosthesis
rod according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR9312315A
Other languages
French (fr)
Other versions
FR2710835B1 (en
Inventor
Dore Jean Louis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medinov SA
Original Assignee
Medinov SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Medinov SA filed Critical Medinov SA
Priority to FR9312315A priority Critical patent/FR2710835B1/en
Publication of FR2710835A1 publication Critical patent/FR2710835A1/en
Application granted granted Critical
Publication of FR2710835B1 publication Critical patent/FR2710835B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/02—Inorganic materials
    • A61L27/12—Phosphorus-containing materials, e.g. apatite
    • 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
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/14—Macromolecular materials
    • A61L27/18—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30721—Accessories
    • A61F2/30749—Fixation appliances for connecting prostheses to the body
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/30004—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/30004—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
    • A61F2002/30032—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis differing in absorbability or resorbability, i.e. in absorption or resorption time
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30062—(bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
    • 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
    • A61F2002/30462—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements retained or tied with a rope, string, thread, wire or cable
    • 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
    • A61F2002/30561—Special structural features of bone or joint prostheses not otherwise provided for breakable or frangible
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • 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
    • A61F2002/30589—Sealing means
    • A—HUMAN NECESSITIES
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    • A61F2/02—Prostheses implantable into the body
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
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    • 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
    • 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
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/003—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in adsorbability or resorbability, i.e. in adsorption or resorption time
    • A61F2250/0031—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in adsorbability or resorbability, i.e. in adsorption or resorption time made from both resorbable and non-resorbable prosthetic parts, e.g. adjacent parts
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures
    • A61F2310/00293—Ceramics or ceramic-like structures containing a phosphorus-containing compound, e.g. apatite

Abstract

The femoral shaft of a hip prosthesis has, at the distal part and/or at the proximal part, holes (1c) for the engagement, if necessary, of fastening screws, the said holes being closed, before impaction of the shaft (1), by members (3) which can be pierced through or can be removed.

Description

Tice fémorale de DrothBse de hanche. Hip DrothBse femoral tice.

Plus particulièrement, I'invention concerne une tige monobloc de reprise. More particularly, the invention relates to a one-piece recovery rod.

II est connu d'utiliser, pour assurer la fixation des tiges fémorales, dans le canal médullaire de l'os, des vis adaptées pour être introduites au niveau de la partie proximale eUou distale de la tige. Ces vis ou autres moyens, tels que fils métalliques, aptes à assurer la stabilité et la solidarisation de la tige et du fémur, sont engagés dans des trous débouchants formés transversalement dans l'épaisseur de ladite tige. De tels moyens de solidarisation peuvent être utilisés dans le cas d'une fixation de la tige avec ou sans ciment. It is known to use, to ensure the fixation of the femoral stems, in the medullary canal of the bone, screws adapted to be introduced at the level of the proximal and / or distal portion of the stem. These screws or other means, such as metal wires, capable of ensuring the stability and the joining of the rod and the femur, are engaged in through holes formed transversely in the thickness of said rod. Such securing means can be used in the case of fixing the rod with or without cement.

Lorsque la tige fémorale est cimentée, le ciment orthopédique peut s'introduire dans les trous débouchants, au fur et à mesure de l'engagement de la tige dans le fût fémoral, préalablement garni de ciment. When the femoral stem is cemented, the orthopedic cement can be introduced into the through holes, as the stem engages in the femoral barrel, previously filled with cement.

II s'avère donc particulièrement difficile, voir impossible, de procéder à l'extraction éventuelle de la tige. It therefore turns out to be particularly difficult, if not impossible, to proceed with the possible extraction of the rod.

Dans le cas d'une tige impactée sans ciment, le spongieux peut s'introduire dans les trous débouchants, et provoquer ainsi, des ponts osseux, assurant l'auto fixation de la tige. Comme précédemment, ces ponts osseux rendent toute extraction éventuelle, particulièrement difficile, voir impossible. In the case of an impacted rod without cement, the cancellous can be introduced into the through holes, and thus cause, bone bridges, ensuring the self fixing of the rod. As before, these bone bridges make any possible extraction, particularly difficult, if not impossible.

II en résulte également une modification du système biomécanique os-implant, c'est-à-dire une modification de la loi de répartition des contraintes.  This also results in a modification of the bone-implant biomechanical system, that is to say a modification of the law of stress distribution.

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 drawbacks in a simple, safe, effective and rational manner.

Le problème que se propose de résoudre l'invention est d'empêcher la pénétration de ciment ou de spongieux dans les trous débouchants, lors de l'introduction de la tige fémorale dans le fût diaphysaire. The problem which the invention proposes to solve is to prevent the penetration of cement or cancellous cells into the through holes, during the introduction of the femoral stem into the diaphyseal barrel.

Pour résoudre un tel problème, la tige fémorale, du type de celle présentant en partie distale etlou en partie proximale des trous pour l'engagement, si nécessaire, de vis de fixation, est remarquable selon l'invention, en ce que lesdits trous sont obturés avant impaction de la tige, par des organes aptes à être transpercés. To solve such a problem, the femoral stem, of the type presenting partially distal and / or partly proximal holes for the engagement, if necessary, of fixing screws, is remarkable according to the invention, in that said holes are closed before impaction of the rod, by organs capable of being pierced.

Pour résoudre le problème posé de pouvoir transpercer les organes d'obturation, en respectant les conditions de bio-compatibilité avec le milieu dans lequel est fixé l'implant, lesdits organes sont exécutés en matière biorésorbable afin que les particules et copeaux soient éliminés par l'organisme ou en matière biotolérée, notamment en acide polylactique ou en hydroxyapathite non bio-conducteur, que le chirurgien enlève avant mise en place et perçage. To solve the problem posed of being able to pierce the obturation organs, respecting the conditions of bio-compatibility with the medium in which the implant is fixed, said organs are made of bioresorbable material so that the particles and shavings are eliminated by the organism or biotolerated material, in particular polylactic acid or non-bio-conductive hydroxyapathite, which the surgeon removes before placement and drilling.

L'invention est exposée, ci-après plus en détail à l'aide des dessins annexés, dans lesquels:
La figure 1 est une vue de profil de la tige fémorale selon l'invention.The invention is set out below in more detail using the appended drawings, in which:
Figure 1 is a side view of the femoral stem according to the invention.

La figure 2 est une vue de face correspondant à la figure 1. Figure 2 is a front view corresponding to Figure 1.

La figure 3 est une vue correspondante à la figure 2, montrant le transperçage des organes d'oburation. Figure 3 is a view corresponding to Figure 2, showing the piercing of the shutter members.

La figure 4 est une vue correspondant à la figure 3, montrant l'introduction des vis après transperçage des organes d'obturation. Figure 4 is a view corresponding to Figure 3, showing the introduction of the screws after piercing the shutter members.

On rappelle de manière parfaitement connue, que la tige fémorale désignée dans son ensemble par (1) comprend un col (la) raccordé angulairement au corps par une partie profilée (il). La forme et le profil en section de la tige (1) ne sont pas décrits en détail car ils peuvent présenter différentes formes de réalisation parfaitement connues par un homme du métier et ne font pas partie de l'objet spécifique de l'invention. It is recalled in a perfectly known manner, that the femoral stem generally designated by (1) comprises a neck (la) angularly connected to the body by a profiled part (it). The shape and cross-sectional profile of the rod (1) are not described in detail since they can have different embodiments perfectly known to a person skilled in the art and are not part of the specific object of the invention.

De même, cette tige peut présenter tout agencement externe, telles que rainures ou autres, ainsi que tous traitements de surfaces aptes à favoriser son ancrage à l'intérieur du fût fémoral. Cette tige (1) présente en partie distale, des trous débouchants (1c) destinés à recevoir, également d'une manière parfaitement connue, des vis (2) ou autres organes d'ancrage. En outre, en partie proximale, la tige peut présenter des trous débouchants (if) destinés à recevoir des fils. Likewise, this rod can have any external arrangement, such as grooves or the like, as well as any surface treatment capable of promoting its anchoring inside the femoral barrel. This rod (1) has, in the distal part, through holes (1c) intended to receive, also in a perfectly known manner, screws (2) or other anchoring members. In addition, in the proximal part, the rod may have through holes (if) intended to receive wires.

Les trous débouchants (1c) sont formés transversalement dans l'épaisseur de la tige, depuis ses faces transversales (nid) (lue), en étant orientées perpendiculairement ou angulairement par rapport à son axe vertical (X) (X'). Ces trous (1c) peuvent être en nombre variable. The through holes (1c) are formed transversely in the thickness of the rod, from its transverse faces (nest) (read), while being oriented perpendicular or angularly with respect to its vertical axis (X) (X '). These holes (1c) can be of variable number.

Dans l'exemple illustré, la tige présente, en partie distale, deux trous parallèles (il).  In the example illustrated, the rod has, in the distal part, two parallel holes (II).

Selon l'invention, les trous (1c) sont obturés avant impaction de la tige par des organes (3) aptes à être transpercés ou extractables. According to the invention, the holes (1c) are closed before impaction of the rod by members (3) capable of being pierced or extractable.

Ces organes d'obturation (3) sont exécutés en matière bio-tolérée, notamment en acide poly-lactique ou en hydroxyapatite et plus généralement en toute matière inerte et bio-compatible. Les organes (3) peuvent ainsi être réalisés en matière bio-résorbable afin que les particules et copeaux résultant du perçage soient éliminés par l'organisme.These obturation members (3) are made from bio-tolerated material, in particular poly-lactic acid or hydroxyapatite and more generally from any inert and bio-compatible material. The organs (3) can thus be made of bio-absorbable material so that the particles and shavings resulting from the piercing are eliminated by the body.

Ces organes (3) peuvent être constitués par des bouchons amovibles ou non.These members (3) may consist of removable or non-removable plugs.

II apparait donc, selon l'invention, que ce comblement préalable des trous (1c) par les organes (3) empêche la pénétration de ciment orthopédique ou d'os spongieux, au moment de l'introduction de la tige (1) dans le fût diaphysaire. Après impaction de la tige (figure 3), les organes (3) peuvent être transpercés. II est alors possible d'introduire les vis de fixation (2). Si ces organes ne sont pas biorésorbables, il sont retirés avant mise en place de la tige, dans le cas où une fixation par vis est envisagée. It therefore appears, according to the invention, that this prior filling of the holes (1c) by the organs (3) prevents the penetration of orthopedic cement or cancellous bone, at the time of the introduction of the rod (1) into the was diaphyseal. After impaction of the rod (Figure 3), the organs (3) can be pierced. It is then possible to introduce the fixing screws (2). If these organs are not bioresorbable, they are removed before fitting the rod, in the event that a screw fixing is envisaged.

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

Claims (5)

R EVENDICAT IONSR EVENDICAT IONS -1- Tige fémorale de prothèse de hanche présentant en partie distale etlou en partie proximale, des trous (1c) pour l'engagement, si nécessaire, de vis de fixation (2), caractérisée en ce que lesdits trous sont obturés avant impaction de la tige (1), par des organes (3) aptes à être transpercés ou a être retirés.-1- Femoral stem of hip prosthesis having partly distal and / or partly proximal, holes (1c) for the engagement, if necessary, of fixing screws (2), characterized in that said holes are closed before impaction of the rod (1), by members (3) able to be pierced or to be removed. -2- Tige selon la revendication 1, caractérisée en ce que les organes d'obturation (3) sont exécutés en matière biorésorbable.-2- Rod according to claim 1, characterized in that the closure members (3) are made of bioresorbable material. -3- Tige selon la revendication 1, caractérisée en ce que les organes d'obturation (3) sont en poly-lactique.-3- Rod according to claim 1, characterized in that the shutter members (3) are poly-lactic. -4- Tige selon la revendication 1, caractérisée en ce que les organes d'obturation (3) sont en hydroxyapatite non bio-conducteur.-4- Rod according to claim 1, characterized in that the closure members (3) are made of non-bio-conductive hydroxyapatite. -5- Tige selon la revendication 1, caractérisée en ce que les organes d'obturation (3) sont des bouchons. -5- Rod according to claim 1, characterized in that the closure members (3) are plugs.
FR9312315A 1993-10-07 1993-10-07 Femoral stem of hip prosthesis. Expired - Fee Related FR2710835B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9312315A FR2710835B1 (en) 1993-10-07 1993-10-07 Femoral stem of hip prosthesis.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9312315A FR2710835B1 (en) 1993-10-07 1993-10-07 Femoral stem of hip prosthesis.

Publications (2)

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FR2710835A1 true FR2710835A1 (en) 1995-04-14
FR2710835B1 FR2710835B1 (en) 1998-03-20

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Cited By (7)

* Cited by examiner, † Cited by third party
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US6296645B1 (en) 1999-04-09 2001-10-02 Depuy Orthopaedics, Inc. Intramedullary nail with non-metal spacers
WO2003034955A1 (en) * 2001-10-19 2003-05-01 Biomet Merck Gmbh Femoral prosthesis
US6783529B2 (en) 1999-04-09 2004-08-31 Depuy Orthopaedics, Inc. Non-metal inserts for bone support assembly
US6808527B2 (en) 2000-04-10 2004-10-26 Depuy Orthopaedics, Inc. Intramedullary nail with snap-in window insert
US7572292B2 (en) * 2001-12-21 2009-08-11 Smith & Nephew, Inc. Hinged joint system
US8523950B2 (en) 2006-06-30 2013-09-03 Smith & Nephew, Inc. Anatomical motion hinged prosthesis
US10610270B2 (en) 2018-01-15 2020-04-07 Glw, Inc. Hybrid intramedullary rods

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WO2005053552A1 (en) 2003-12-01 2005-06-16 Smith & Nephew, Inc. Humeral nail with insert for fixing a screw
US7410488B2 (en) 2005-02-18 2008-08-12 Smith & Nephew, Inc. Hindfoot nail

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US4919666A (en) * 1986-05-05 1990-04-24 Sulzer Brothers Limited Implant having recesses for therapeutically effective substances
US5152798A (en) * 1988-12-23 1992-10-06 Johnson & Johnson Endoprosthesis

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DE3445709A1 (en) * 1984-12-14 1986-06-19 Klaus Dr.med. Dr.med.habil. 8000 München Draenert SURGICAL MATERIAL CLOSURE
US4919666A (en) * 1986-05-05 1990-04-24 Sulzer Brothers Limited Implant having recesses for therapeutically effective substances
US5152798A (en) * 1988-12-23 1992-10-06 Johnson & Johnson Endoprosthesis

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6296645B1 (en) 1999-04-09 2001-10-02 Depuy Orthopaedics, Inc. Intramedullary nail with non-metal spacers
EP1168970A1 (en) * 1999-04-09 2002-01-09 Depuy Orthopaedics, Inc. Intramedullary nail with nonmetal spacers
US6709436B1 (en) 1999-04-09 2004-03-23 Depuy Orthopaedics, Inc. Non-metal spacers for intramedullary nail
US6783529B2 (en) 1999-04-09 2004-08-31 Depuy Orthopaedics, Inc. Non-metal inserts for bone support assembly
US6786908B2 (en) 1999-04-09 2004-09-07 Depuy Orthopaedics, Inc. Bone fracture support implant with non-metal spacers
EP1168970A4 (en) * 1999-04-09 2008-11-26 Depuy Orthopaedics Inc Intramedullary nail with nonmetal spacers
US6808527B2 (en) 2000-04-10 2004-10-26 Depuy Orthopaedics, Inc. Intramedullary nail with snap-in window insert
WO2003034955A1 (en) * 2001-10-19 2003-05-01 Biomet Merck Gmbh Femoral prosthesis
US7572292B2 (en) * 2001-12-21 2009-08-11 Smith & Nephew, Inc. Hinged joint system
US8545570B2 (en) 2001-12-21 2013-10-01 Smith & Nephew, Inc. Hinged joint system
US9056012B2 (en) 2001-12-21 2015-06-16 Smith & Nephew, Inc. Hinged joint system
US9381087B2 (en) * 2001-12-21 2016-07-05 Smith & Nephew, Inc. Hinged joint system
US9693868B2 (en) 2001-12-21 2017-07-04 Smith & Nephew, Inc. Hinged joint system
US8523950B2 (en) 2006-06-30 2013-09-03 Smith & Nephew, Inc. Anatomical motion hinged prosthesis
US9730799B2 (en) 2006-06-30 2017-08-15 Smith & Nephew, Inc. Anatomical motion hinged prosthesis
US10779949B2 (en) 2006-06-30 2020-09-22 Smith & Nephew, Inc. Anatomical motion hinged prosthesis
US10610270B2 (en) 2018-01-15 2020-04-07 Glw, Inc. Hybrid intramedullary rods
US11826083B2 (en) 2018-01-15 2023-11-28 Glw, Inc. Hybrid intramedullary rods

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