FR3084993A1 - INTEROSSEUS CAGE - Google Patents

INTEROSSEUS CAGE Download PDF

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Publication number
FR3084993A1
FR3084993A1 FR1870936A FR1870936A FR3084993A1 FR 3084993 A1 FR3084993 A1 FR 3084993A1 FR 1870936 A FR1870936 A FR 1870936A FR 1870936 A FR1870936 A FR 1870936A FR 3084993 A1 FR3084993 A1 FR 3084993A1
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face
recesses
cavity
cage
bearing
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Granted
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FR1870936A
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French (fr)
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FR3084993B1 (en
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Hassan Razian
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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
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • 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
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • A61F2/447—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
    • 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
    • A61F2002/3037—Translation along the common longitudinal axis, e.g. piston
    • 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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30777—Oblong apertures
    • 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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • 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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30785—Plurality of holes parallel
    • 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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30787—Plurality of holes inclined obliquely with respect to each other
    • 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
    • A61F2/30767—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
    • A61F2002/30828—Plurality of grooves parallel
    • 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
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • 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
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A61F2002/30845—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes with cutting edges

Description

DescriptionDescription

Titre de l’invention : Cage interosseuseTitle of invention: Interosseous cage

Domaine technique [0001] La présente invention concerne les cages interosseuses, à savoir les cages aptes à être implantées entre deux portions d’os en vue de les solidariser de façon ferme en favorisant leur solidarisation par ostéosynthèse, qui trouvent des applications particulièrement avantageuses, mais non exclusivement, comme cages intervertébrales.Technical Field [0001] The present invention relates to interosseous cages, namely cages capable of being implanted between two portions of bone in order to firmly join them together by promoting their joining by osteosynthesis, which find particularly advantageous applications, but not exclusively, as intervertebral cages.

[0002] On connaît déjà de nombreuses cages interosseuses de ce type. Elles sont essentiellement composées d’un corps solide, par exemple en métal, comportant une cavité traversante dans laquelle peut être placé un greffon osseux ou substitut osseux qui permet de favoriser la croissance osseuse et donc la liaison entre les deux portions d’os par ostéosynthèse.Many interosseous cages of this type are already known. They are essentially composed of a solid body, for example made of metal, comprising a through cavity in which can be placed a bone graft or bone substitute which makes it possible to promote bone growth and therefore the connection between the two bone portions by osteosynthesis. .

[0003] Lorsqu’une cage a été implantée, il se produit, lors de l’ostéosynthèse, des excroissances que les techniciens désignent « travées trabéculaires » qui relient l’os spongieux au corps de la cage, ou les deux portions d’os entre elles.When a cage has been implanted, it occurs during osteosynthesis, growths that technicians designate "trabecular spans" which connect the cancellous bone to the body of the cage, or the two portions of bone between them.

[0004] Or, après un certain temps, à la suite d’une révision osseuse, il est parfois nécessaire de procéder à une « reprise » de la cage implantée, par exemple pour la repositionner ou la remplacer par une autre cage mieux adaptée pour soulager les maux du patient.However, after a certain time, following a bone revision, it is sometimes necessary to carry out a "recovery" of the implanted cage, for example to reposition or replace it with another cage better suited for relieve the patient's ailments.

[0005] Pour pouvoir réaliser cette intervention de « reprise » et donc ôter la cage déjà implantée, il est absolument nécessaire de couper les travées trabéculaires.To be able to carry out this "recovery" intervention and therefore remove the cage already implanted, it is absolutely necessary to cut the trabecular spans.

[0006] Cette opération n’est pas facile à réaliser avec les cages connues, la difficulté provenant du fait qu’il est compliqué d’introduire et passer une lame coupante entre la cage et l’os pour atteindre et couper ces travées trabéculaires.This operation is not easy to perform with known cages, the difficulty coming from the fact that it is complicated to introduce and pass a cutting blade between the cage and the bone to reach and cut these trabecular spans.

[0007] Aussi, la présente invention a-t-elle pour but de réaliser une cage interosseuse qui facilite le travail des Praticiens, notamment dans leur intervention pour couper ces travées trabéculaires afin de pouvoir enlever facilement la cage implantée.Also, the present invention aims to achieve an interosseous cage which facilitates the work of Practitioners, especially in their intervention to cut these trabecular spans in order to be able to easily remove the implanted cage.

Définition de l’invention [0008] Plus précisément, la présente invention a pour objet une cage interosseuse apte à être intercalée entre deux portions d’os en vue de leur réunion notamment par ostéosynthèse, comportant au moins :Definition of the invention [0008] More specifically, the subject of the present invention is an interosseous cage capable of being interposed between two portions of bone with a view to joining them together in particular by osteosynthesis, comprising at least:

• un corps délimité par deux faces d’appui opposées sensiblement parallèles entre elles et par une face latérale reliant ces deux faces d’appui, cette dite face latérale comportant deux portions de face latérale opposées qui définissent, par deux plans de référence assimilés comme étant parallèles entre eux et contenant ces portions de faces latérales, un espace dans lequel sont entièrement contenues les deux faces d’appui, chaque face d’appui étant en outre configurée pour être apte à venir au contact d’une face correspondante d’une des deux portions d’os, et • une cavité réalisée dans ledit corps et débouchant sur au moins l’une des deux faces d’appui, caractérisée par le fait que ledit corps comporte au moins deux évidements réalisés respectivement à proximité des deux faces d’appui et en débouchant dans ladite cavité, chaque évidement étant configuré pour permettre le passage d’au moins une lame de coupe de façon que cette dernière soit apte à atteindre ladite cavité.• a body delimited by two opposite bearing faces which are substantially parallel to one another and by a lateral face connecting these two bearing faces, this so-called lateral face comprising two opposite lateral face portions which define, by two reference planes assimilated as being parallel to each other and containing these portions of lateral faces, a space in which the two bearing faces are entirely contained, each bearing face being further configured to be able to come into contact with a corresponding face of one of the two bone portions, and • a cavity produced in said body and opening onto at least one of the two bearing faces, characterized in that said body comprises at least two recesses made respectively near the two faces of support and opening into said cavity, each recess being configured to allow the passage of at least one cutting blade so that tte last is able to reach said cavity.

[0009] Selon une autre caractéristique de la cage selon l’invention, au moins l’un des évidements est constitué par l’une des réalisations suivantes :According to another characteristic of the cage according to the invention, at least one of the recesses is formed by one of the following embodiments:

(i) une rainure réalisée entre deux bords opposés d’une face d’appui de façon à définir, sur cette face d’appui, au moins deux embases d’appui opposées, (ii) une lumière réalisée dans l’épaisseur du dit corps.(i) a groove formed between two opposite edges of a bearing face so as to define, on this bearing face, at least two opposite bearing bases, (ii) a lumen made in the thickness of said body.

Brève description des dessins [0010] D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif, mais nullement limitatif, dans lesquels :BRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the present invention will appear during the following description given with reference to the drawings annexed by way of illustration, but in no way limitative, in which:

Description détallée [0011] Les figures 1 et 2 représentent respectivement deux vues schématiques d’un mode de réalisation de la cage interosseuse selon l’invention, la figure 1 étant une vue de côté et la figure 2 une coupe référencée II-II sur la figure 1.Detailed description FIGS. 1 and 2 respectively represent two schematic views of an embodiment of the interosseous cage according to the invention, FIG. 1 being a side view and FIG. 2 a section referenced II-II on the figure 1.

[0012] Il est tout d'abord précisé que ces deux figures ne représentent qu’un seul mode de réalisation de l’objet selon l’invention, même s’il est schématisé, mais qu’il peut en exister d’autres qui répondent à la définition de cette invention.It is firstly specified that these two figures represent only one embodiment of the object according to the invention, even if it is shown diagrammatically, but that there may be others which meet the definition of this invention.

[0013] Il est en outre précisé que, lorsque, selon la définition de l’invention, l’objet de l’invention comporte “au moins un” élément ayant une fonction donnée, le mode de réalisation décrit peut comporter plusieurs de ces éléments. Réciproquement, si le mode de réalisation de l’objet selon l’invention tel qu’illustré comporte plusieurs éléments de fonction identique et si, dans la description, il n’est pas spécifié que l’objet selon cette invention doit obligatoirement comporter un nombre particulier de ces éléments, l’objet de l’invention pourra être défini comme comportant “au moins un” de ces éléments.It is further clarified that, when, according to the definition of the invention, the object of the invention comprises “at least one” element having a given function, the embodiment described may include several of these elements . Conversely, if the embodiment of the object according to the invention as illustrated comprises several elements of identical function and if, in the description, it is not specified that the object according to this invention must necessarily include a number particular of these elements, the subject of the invention could be defined as comprising “at least one” of these elements.

[0014] Il est précisé que lorsque, dans la présente description, une expression définit à elle seule, sans mention particulière spécifique la concernant, un ensemble de caractéristiques structurelles, ces caractéristiques peuvent être prises, pour la définition de l'objet de la protection demandée, quand cela est techniquement possible, soit séparément, soit en combinaison totale et/ou partielle.It is specified that when, in the present description, an expression defines on its own, without specific specific mention concerning it, a set of structural characteristics, these characteristics can be taken, for the definition of the object of protection requested, when technically possible, either separately or in total and / or partial combination.

[0015] Il est de plus précisé que, dans la présente description, si l'adverbe sensiblement est associé à un qualificatif d'un moyen donné, ce qualificatif doit être compris au sens strict ou approché.It is further clarified that, in the present description, if the adverb substantially is associated with a qualifier of a given means, this qualifier must be understood in the strict sense or approximated.

[0016] Enfin, il est à noter que les dimensions des éléments de la cage selon l’invention représentés sur ces deux figures ne représentent pas obligatoirement la réalité et que les différentes échelles utilisées dans ces dessins n’ont été choisies que pour faciliter la compréhension de l’objet de l’invention. L’homme du métier saura, sans aucune difficulté, définir ces dimensions selon l’utilisation et les applications possibles d’une telle cage.Finally, it should be noted that the dimensions of the elements of the cage according to the invention shown in these two figures do not necessarily represent reality and that the different scales used in these drawings have been chosen only to facilitate the understanding of the subject of the invention. Those skilled in the art will be able, without any difficulty, to define these dimensions according to the use and possible applications of such a cage.

Description d’un mode de réalisation préféré de l’objet de l’invention.Description of a preferred embodiment of the subject of the invention.

[0017] En référence aux deux figures annexées, la présente invention concerne une cage interosseuse apte à être intercalée entre deux portions d’os 01, 02 très partiellement évoquées sur la figure 2, en vue de leur réunion notamment par ostéosynthèse.With reference to the two appended figures, the present invention relates to an interosseous cage capable of being inserted between two portions of bone 01, 02 very partially mentioned in FIG. 2, with a view to joining them together in particular by osteosynthesis.

[0018] La cage interosseuse comporte au moins un corps 10 réalisé en un matériau bien connu des hommes de l’art, par exemple en PEEK, métal, etc. Ce corps est délimité par deux faces d’appui opposées 11,12 sensiblement parallèles entre elles et par une face latérale 20 reliant ces deux faces d’appui, cette face latérale comportant deux portions de face latérale opposées 21, 22 qui définissent, par deux plans de référence Pl, P2 assimilés comme étant parallèles entre eux et contenant ces portions de faces latérales, un espace 30 dans lequel sont entièrement contenues les deux faces d’appui, chaque face d’appui étant en outre configurée pour être apte à venir au contact d’une face correspondante d’une des deux portions d’os.The interosseous cage includes at least one body 10 made of a material well known to those skilled in the art, for example PEEK, metal, etc. This body is delimited by two opposite bearing faces 11, 12 which are substantially parallel to one another and by a lateral face 20 connecting these two bearing faces, this lateral face comprising two opposite lateral face portions 21, 22 which define, by two reference planes Pl, P2 assimilated as being mutually parallel and containing these portions of lateral faces, a space 30 in which the two bearing faces are entirely contained, each bearing face being further configured to be able to come to contact of a corresponding face of one of the two bone portions.

[0019] La cage comporte également une cavité 40 réalisée dans le corps et débouchant sur au moins l’une des deux faces d’appui 11, 12.The cage also includes a cavity 40 made in the body and opening onto at least one of the two support faces 11, 12.

[0020] Selon une caractéristique essentielle de l’invention, le corps 10 comporte au moins deux évidements 51, 52 réalisés respectivement à proximité des deux faces d’appui 11, 12 (autrement dit : un évidement est associé à une face d’appui) et en débouchant dans la cavité 40, chaque évidement étant configuré pour permettre le passage d’au moins une lame de coupe de façon que cette dernière soit apte à atteindre cette cavité dans le but qui sera défini ci-après.According to an essential characteristic of the invention, the body 10 comprises at least two recesses 51, 52 produced respectively near the two bearing faces 11, 12 (in other words: a recess is associated with a bearing face ) and by opening into the cavity 40, each recess being configured to allow the passage of at least one cutting blade so that the latter is capable of reaching this cavity for the purpose which will be defined below.

[0021] Selon une caractéristique très préférentielle de l’invention, au moins l’un des évidements 51, 52 est constitué selon l’une des réalisations suivantes :According to a very preferred characteristic of the invention, at least one of the recesses 51, 52 is made up according to one of the following embodiments:

(i) une rainure 51 réalisée entre deux bords opposés d’une face d’appui de façon à définir, sur cette face d’appui, au moins deux embases d’appui opposées 13, 14, (ii) une lumière 52 réalisée dans l’épaisseur du corps 10.(i) a groove 51 produced between two opposite edges of a support face so as to define, on this support face, at least two opposite support bases 13, 14, (ii) a lumen 52 produced in body thickness 10.

[0022] Il est fait remarquer que, dans le mode de réalisation de la cage interosseuse illustré, dans un but de simplification du dessin, le corps 10 comporte une rainure 51 et une lumière 52, mais il est bien évident qu’il peut comporter uniquement deux rainures 51 ou uniquement deux lumières 52.It is noted that, in the embodiment of the interosseous cage illustrated, for the purpose of simplifying the drawing, the body 10 has a groove 51 and a light 52, but it is obvious that it may include only two grooves 51 or only two lights 52.

[0023] Il est aussi possible que, quelle que soit sa structure comme définie ci-avant, chaque évidement soit réalisé en un seul évidement ou constitué de plusieurs évidements qui, pris ensemble, définissent un évidement au sens de la présente invention.It is also possible that, whatever its structure as defined above, each recess is made in a single recess or made up of several recesses which, taken together, define a recess within the meaning of the present invention.

[0024] De façon préférentielle, pour faciliter le travail des Praticiens, au moins l’un des évidements 51, 52, de façon avantageuse les deux, traverse de part en part le corps 10, comme illustré sur les figures.Preferably, to facilitate the work of Practitioners, at least one of the recesses 51, 52, advantageously both, passes right through the body 10, as illustrated in the figures.

[0025] De façon aussi très préférentielle, pour faciliter la fabrication de la cage, les évidements sont réalisés dans des plans sensiblement parallèles aux faces d’appui et selon une direction sensiblement parallèle aux deux plans de référence Pl, P2 définis ci-avant, comme illustré sur les figures.Also very preferably, to facilitate the manufacture of the cage, the recesses are made in planes substantially parallel to the bearing faces and in a direction substantially parallel to the two reference planes Pl, P2 defined above, as illustrated in the figures.

[0026] De façon aussi très préférentielle, dans les buts qui seront définis ci-après, la largeur d’au moins l’un des évidements prise selon une direction sensiblement parallèle à une face d’appui et sensiblement perpendiculaire aux plans de référence délimitant l’espace 30 est au moins égale à la largeur de la cavité 40 prise selon cette même direction.Also very preferably, for the purposes to be defined below, the width of at least one of the recesses taken in a direction substantially parallel to a bearing face and substantially perpendicular to the delimiting reference planes the space 30 is at least equal to the width of the cavity 40 taken in this same direction.

[0027] De façon encore plus préférentielle, la largeur d’au moins l’un des évidements prise selon une direction sensiblement parallèle à une face d’appui et sensiblement perpendiculaire aux plans de référence délimitant l’espace 30 est supérieure à la largeur de la cavité 40 prise selon cette même direction.Even more preferably, the width of at least one of the recesses taken in a direction substantially parallel to a bearing face and substantially perpendicular to the reference planes delimiting the space 30 is greater than the width of the cavity 40 taken in this same direction.

[0028] Comme illustré sur les figures, il est préférable que la cavité 40 traverse de part en part le corps 10 en débouchant sur les deux faces d’appui 11, 12, pour que, de façon connue, les greffons osseux qu’elle est apte à contenir puissent favoriser l’ostéosynthèse entre les deux portions d’os 01, 02.As illustrated in the figures, it is preferable that the cavity 40 passes right through the body 10, opening onto the two bearing faces 11, 12, so that, in known manner, the bone grafts that it is able to contain can promote osteosynthesis between the two bone portions 01, 02.

[0029] La structure décrite ci-dessus de la cage selon l’invention facilite très avantageusement le travail des Praticiens dans le cas où, après un certain temps après l’implantation de cette cage et pour quelque raison que ce soit, il est nécessaire d’effectuer une « reprise d’opération » qui, comme expliquer ci-avant, nécessite l’enlèvement de la cage implantée.The structure described above of the cage according to the invention very advantageously facilitates the work of Practitioners in the case where, after a certain time after the implantation of this cage and for whatever reason, it is necessary to carry out a “resumption of operation” which, as explained above, requires the removal of the implanted cage.

[0030] En effet, les évidements 51, 52 décrits ci-dessus permettent d’introduire une lame de coupe pour couper les travées trabéculaires qui, lors de l’ostéosynthèse, relient les greffons à l’os spongieux, et même les portions osseuses entre elles, et empêchent le Patricien de retirer facilement la cage accrochée aux portions d’os 01 et 02, et pour pouvoir procéder facilement au retrait de la cage.Indeed, the recesses 51, 52 described above allow to introduce a cutting blade to cut the trabecular spans which, during osteosynthesis, connect the grafts to the cancellous bone, and even the bone portions between them, and prevent the Patrician from easily removing the cage attached to the bone portions 01 and 02, and in order to be able to easily remove the cage.

[0031] La coupe de ces travées trabéculaires est facilement obtenue avec des lames de coupes qui sont introduites dans les évidements jusqu’à la cavité dans laquelle se sont développées ces travées trabéculaires. La largeur et la longueur des évidements permettent de faire subir à la lame de coupe des mouvements oscillants pour obtenir une coupe plus rapide et plus facile.The cutting of these trabecular spans is easily obtained with cutting blades which are introduced into the recesses up to the cavity in which these trabecular spans have developed. The width and length of the recesses allow the cutting blade to undergo oscillating movements to obtain a faster and easier cut.

[0032] Il est souligné que, bien que le corps 10 et la cavité traversante 40 aient été représentés tous les deux dans une forme de parallélépipède rectangle, ils peuvent présenter toutes autres formes comme celles qui sont connues de l’art antérieur. La forme illustrée n’a été choisie que pour simplifier les dessins et faciliter la compréhension de l’invention.It is emphasized that, although the body 10 and the through cavity 40 have both been shown in the shape of a rectangular parallelepiped, they can have any other shape like that which is known from the prior art. The illustrated form was chosen only to simplify the drawings and facilitate the understanding of the invention.

[0033] Une telle cage interosseuse peut comporter des éléments additifs comme des lames d’ancrage, des picots sur les faces d’appui, etc. Tous ces éléments sont bien connus notamment des cages de l’art antérieur, et ne seront donc pas plus spécifiquement d’écrits ici, d’autant plus qu’ils n’entrent pas dans le cadre de la présente invention.Such an interosseous cage may include additive elements such as anchoring blades, pins on the bearing faces, etc. All these elements are well known in particular from cages of the prior art, and will therefore not be more specifically written here, especially since they do not come within the scope of the present invention.

Claims (1)

Revendications claims [Revendication 1] [Claim 1] Cage interosseuse apte à être intercalée entre deux portions d’os (01, 02) en vue de leur réunion notamment par ostéosynthèse, comportant au moins : • un corps (10) délimité par deux faces d’appui opposées (11, 12) sensiblement parallèles entre elles et par une face latérale (20) reliant ces deux faces d’appui, cette dite face latérale comportant deux portions de face latérale opposées (21, 22) qui définissent, par deux plans de référence (Pl, P2) assimilés comme étant parallèles entre eux et contenant ces portions de faces latérales, un espace (30) dans lequel sont entièrement contenues les deux faces d’appui, chaque face d’appui étant en outre configurée pour être apte à venir au contact d’une face correspondante d’une des deux portions d’os, et • une cavité (40) réalisée dans ledit corps et débouchant sur au moins l’une des deux faces d’appui (11, 12), caractérisée par le fait que ledit corps (10) comporte au moins deux évidements (51, 52) réalisés respectivement à proximité des deux faces d’appui (11, 12) et en débouchant dans ladite cavité (40), chaque évidement étant configuré pour permettre le passage d’au moins une lame de coupe de façon que cette dernière soit apte à atteindre ladite cavité (40). Interosseous cage suitable for being inserted between two bone portions (01, 02) with a view to joining them together, in particular by osteosynthesis, comprising at least: • a body (10) delimited by two opposite bearing faces (11, 12) substantially parallel to one another and by a lateral face (20) connecting these two bearing faces, this so-called lateral face comprising two opposite lateral face portions (21, 22) which define, by two reference planes (P1, P2) assimilated as being mutually parallel and containing these portions of lateral faces, a space (30) in which the two bearing faces are entirely contained, each support face being further configured to be able to come into contact with a corresponding face of one of the two bone portions, and A cavity (40) produced in said body and opening onto at least one of the two support faces (11, 12), characterized by the fact that said body (10) comprises at least two recesses (51, 52) produced respectively near the two bearing faces (11, 12) and opening into said cavity (40), each recess being configured to allow the passage of at least one cutting blade so that the latter is capable of reaching said cavity (40). [Revendication 2] [Claim 2] Cage selon la revendication 1, caractérisée par le fait qu’au moins l’un des évidements (51, 52) est constitué par l’une des réalisations suivantes : (i) une rainure (51) réalisée entre deux bords opposés d’une face d’appui de façon à définir, sur cette face d’appui, au moins deux embases d’appui opposées (13, 14), (ii) une lumière (52) réalisée dans l’épaisseur du dit corps (10). Cage according to claim 1, characterized in that at least one of the recesses (51, 52) is constituted by one of the following embodiments: (i) a groove (51) produced between two opposite edges of a support face so as to define, on this support face, at least two opposite support bases (13, 14), (ii) a light (52) made in the thickness of said body (10). [Revendication 3] [Claim 3] Cage selon l’une des revendications 1 et 2, caractérisée par le fait qu’au moins l’un des évidements (51, 52) traverse de part en part ledit corps (10). Cage according to one of claims 1 and 2, characterized in that at least one of the recesses (51, 52) passes right through said body (10). [Revendication 4] [Claim 4] Cage selon l’une des revendications 1 à 3, caractérisée par le fait que lesdits évidements sont réalisés dans des plans sensiblement parallèles audites faces d’appui, et selon une direction sensiblement parallèle aux deux plans de référence (Pl, P2). Cage according to one of claims 1 to 3, characterized in that said recesses are made in planes substantially parallel to said bearing faces, and in a direction substantially parallel to the two reference planes (Pl, P2). [Revendication 5] [Claim 5] Cage selon l’une des revendications 1 à 4, caractérisée par le fait que la largeur d’au moins l’un des évidements prise selon une direction sen- Cage according to one of claims 1 to 4, characterized in that the width of at least one of the recesses taken in a direction felt-
[Revendication 6] [Revendication 7] siblement parallèle à une face d’appui et sensiblement perpendiculaire aux plans délimitant ledit espace (30) est au moins égale à la largeur de ladite cavité (40) prise selon cette même direction.[Claim 6] [Claim 7] so parallel to a bearing face and substantially perpendicular to the planes delimiting said space (30) is at least equal to the width of said cavity (40) taken in this same direction. Cage selon la revendication 5, caractérisée par le fait que la largeur d’au moins l’un des évidements prise selon une direction sensiblement parallèle à une face d’appui et sensiblement perpendiculaire aux plans délimitant ledit espace (30) est supérieure à la largeur de ladite cavité (40) prise selon cette même direction.Cage according to claim 5, characterized in that the width of at least one of the recesses taken in a direction substantially parallel to a bearing face and substantially perpendicular to the planes delimiting said space (30) is greater than the width of said cavity (40) taken in this same direction. Cage selon l’une des revendications 1 à 6, caractérisée par le fait que ladite cavité (40) traverse de part en part ledit corps (10) en débouchant sur les deux faces d’appui (11, 12).Cage according to one of claims 1 to 6, characterized in that said cavity (40) passes right through said body (10) opening onto the two bearing faces (11, 12).
FR1870936A 2018-08-17 2018-08-17 INTEROSSEOUS CAGE Active FR3084993B1 (en)

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US20090198339A1 (en) * 2008-02-06 2009-08-06 Nuvasive, Inc. Systems and methods for spinal fusion
US20140100657A1 (en) * 2008-06-06 2014-04-10 Providence Medical Technology, Inc. Spinal facet cage implant
US20100168798A1 (en) * 2008-12-30 2010-07-01 Clineff Theodore D Bioactive composites of polymer and glass and method for making same
US20110040384A1 (en) * 2009-08-14 2011-02-17 Junn Fredrick S Implantable prosthetic cage
US20110172775A1 (en) * 2010-01-07 2011-07-14 Eric Flickinger Interbody implant with graft retaining bone cap
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