FR2851457A1 - Inter-somantic cage for replacing damaged intervertebral disc, has vein with transversal section defined in plane perpendicular to end face having triangular form with base defined by side that is situated on end face - Google Patents
Inter-somantic cage for replacing damaged intervertebral disc, has vein with transversal section defined in plane perpendicular to end face having triangular form with base defined by side that is situated on end face Download PDFInfo
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- FR2851457A1 FR2851457A1 FR0302124A FR0302124A FR2851457A1 FR 2851457 A1 FR2851457 A1 FR 2851457A1 FR 0302124 A FR0302124 A FR 0302124A FR 0302124 A FR0302124 A FR 0302124A FR 2851457 A1 FR2851457 A1 FR 2851457A1
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Classifications
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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
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30138—Convex polygonal shapes
- A61F2002/30156—Convex polygonal shapes triangular
-
- 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
- A61F2002/30841—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
-
- 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
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30879—Ribs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0017—Angular shapes
- A61F2230/0023—Angular shapes triangular
-
- 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
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
Abstract
Description
CAGE INTER-SOMATIQUE A NERVURESINTER-SOMATIC CAGE WITH RIBS
La présente invention concerne les cages inter-somatiques qui sont utilisées 5 pour supprimer la cause des douleurs générées par un disque intervertébral endommagé. The present invention relates to inter-somatic cages which are used to suppress the cause of pain generated by a damaged intervertebral disc.
Une cage inter-somatique est un dispositif prothétique apte à être implanté entre deux vertèbres consécutives dans le but de remplacer le disque intervertébral endommagé situé entre ces deux vertèbres pour constituer en quelque sorte, dans io un premier temps une entretoise entre les deux vertèbres et, dans un second temps un moyen pour favoriser l'ostéosynthèse entre ces deux vertèbres pour qu'elles ne puissent plus se déplacer l'une par rapport à l'autre. An inter-somatic cage is a prosthetic device able to be implanted between two consecutive vertebrae with the aim of replacing the damaged intervertebral disc situated between these two vertebrae to constitute in a way, in a first step, a spacer between the two vertebrae and, secondly, a means of promoting osteosynthesis between these two vertebrae so that they can no longer move relative to each other.
On connaît déjà de telles cages inter-somatiques, par exemple celles décrites et illustrées dans les US-A-4 501 269, WO-A-89 12431 et EP-A-0 307 241. Such inter-somatic cages are already known, for example those described and illustrated in US-A-4 501 269, WO-A-89 12431 and EP-A-0 307 241.
Pour favoriser l'ancrage de la cage dans les corps osseux des deux vertèbres, les deux faces de la cage qui sont aptes à venir coopérer avec ces corps osseux sont recouvertes de nervures ou picots formant saillie sur ces faces. La réalisation de ces nervures et/ou picots pose des problèmes d'usinage et, en outre, les formes qui leur sont données les rendent relativement fragiles. Il n'est donc pas 20 rare que des nervures et/ou picots de cages selon l'art antérieur implantées entre deux vertèbres d'une colonne vertébrale d'un corps humain se cassent relativement facilement. To favor the anchoring of the cage in the bony bodies of the two vertebrae, the two faces of the cage which are able to come to cooperate with these bony bodies are covered with ribs or spikes protruding on these faces. The production of these ribs and / or pins poses machining problems and, moreover, the shapes which are given to them make them relatively fragile. It is therefore not uncommon for ribs and / or pins of cages according to the prior art implanted between two vertebrae of a vertebral column of a human body to break relatively easily.
La présente invention a ainsi pour but de réaliser une cage intersomatique permettant de palier en grande partie les inconvénients mentionnés ci-dessus. The object of the present invention is therefore to produce an interbody cage making it possible to largely overcome the drawbacks mentioned above.
Plus précisément, la présente invention a pour objet une cage intersomatique apte à être implantée entre deux vertèbres consécutives, comportant un corps délimité par deux faces d'extrémités opposées sensiblement parallèles entre elles et par une face latérale reliant les deux faces d'extrémités, ces deux faces d'extrémités étant aptes à coopérer avec respectivement les deux vertèbres, caractérisée par le 30 fait qu'elle comporte en outre au moins une première nervure réalisée sur une première face d'extrémité, ladite première nervure étant définie de façon continue suivant une courbe fermée, la section transversale de ladite première nervure définie dans un plan sensiblement perpendiculaire à ladite première face d'extrémité ayant sensiblement la forme d'un premier triangle dont la base est définie par le côté qui est situé sur ladite première face d'extrémité. More specifically, the subject of the present invention is an intersomatic cage capable of being implanted between two consecutive vertebrae, comprising a body delimited by two opposite end faces which are substantially parallel to one another and by a lateral face connecting the two end faces, these two end faces being able to cooperate respectively with the two vertebrae, characterized in that it further comprises at least one first rib produced on a first end face, said first rib being defined continuously according to a closed curve, the cross section of said first rib defined in a plane substantially perpendicular to said first end face having substantially the shape of a first triangle whose base is defined by the side which is located on said first end face .
D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif mais nullement limitatif, dans lesquels: La figure 1 représente le schéma de principe d'un premier mode de réalisation d'une cage inter-somatique selon l'invention, La figure 2 représente, dans une vue en perspective cavalière partielle, un deuxième mode de réalisation d'une cage inter-somatique selon l'invention. Other characteristics and advantages of the invention will appear during the following description given with reference to the accompanying drawings by way of illustration but in no way limitative, in which: FIG. 1 represents the block diagram of a first embodiment of an inter-somatic cage according to the invention, FIG. 2 represents, in a partial perspective view, a second embodiment of an inter-somatic cage according to the invention.
La figure 3 représente, dans une vue en coupe transversale, une partie de la cage inter-somatique selon le mode de réalisation représenté sur la figure 2, et Les figures 4 et 5 représentent respectivement, en vue de dessus, des troisième et quatrième modes de réalisation d'une cage selon l'invention. Figure 3 shows, in a cross-sectional view, part of the inter-somatic cage according to the embodiment shown in Figure 2, and Figures 4 and 5 respectively represent, in top view, third and fourth modes for making a cage according to the invention.
Les figures 1 à 5 représentent quatre modes de réalisation de la cage inter15 somatique selon l'invention. Cependant, les mêmes références y désignent les mêmes éléments, quelle que soit la figure sur laquelle elles apparaissent et quelle que soit la forme de représentation de ces éléments. Figures 1 to 5 show four embodiments of the somatic inter15 cage according to the invention. However, the same references designate the same elements there, whatever the figure on which they appear and whatever the form of representation of these elements.
La figure 1 représente de façon schématique un premier mode de réalisation de la cage inter-somatique selon l'invention apte à être implantée entre deux 20 vertèbres consécutives. FIG. 1 schematically represents a first embodiment of the inter-somatic cage according to the invention capable of being implanted between two consecutive vertebrae.
Selon ce premier mode de réalisation, la cage comporte un corps 1, par exemple en un métal comme un alliage de titane ou en un matériau plastique comme celui connu sous la Marque commerciale "PEEK", délimité par deux faces d'extrémités opposées 2, 3 sensiblement parallèles entre elles et par une face 25 latérale 4 reliant les deux faces d'extrémités, ces deux faces d'extrémités étant aptes à coopérer avec respectivement les corps osseux des deux vertèbres. According to this first embodiment, the cage comprises a body 1, for example made of a metal such as a titanium alloy or a plastic material like that known under the trademark "PEEK", delimited by two opposite end faces 2, 3 substantially parallel to each other and by a lateral face 25 connecting the two end faces, these two end faces being able to cooperate with the bone bodies of the two vertebrae, respectively.
Il est bien évident que la forme parallélépipédique rectangle du bloc 1 représentée sur les figures 1 à 5 n'est qu'un exemple, et que le bloc 1 peut être de toute autre forme à la condition qu'elle soit adaptée pour constituer une cage inter30 somatique apte à remplacer tout ou partie d'un disque intervertébral. It is obvious that the rectangular parallelepiped shape of the block 1 shown in Figures 1 to 5 is only an example, and that the block 1 can be of any other shape provided that it is adapted to constitute a cage somatic inter30 able to replace all or part of an intervertebral disc.
La cage comporte en outre au moins une première nervure 11 réalisée sur une première face d'extrémité 2, cette première nervure 11 étant définie de façon continue suivant une courbe fermée, la section transversale 12 de cette première nervure définie dans un plan sensiblement perpendiculaire à la première face d'extrémité 2 ayant sensiblement la forme d'un premier triangle dont la base 13 est définie par le côté qui est situé sur cette première face d'extrémité. The cage further comprises at least a first rib 11 produced on a first end face 2, this first rib 11 being defined continuously along a closed curve, the cross section 12 of this first rib defined in a plane substantially perpendicular to the first end face 2 having substantially the shape of a first triangle whose base 13 is defined by the side which is located on this first end face.
Dans une réalisation avantageuse, comme plus particulièrement illustré, le premier triangle défini ci-dessus est sensiblement un triangle rectangle dont la base 13 définie ci-avant est l'un des deux côtés de l'angle droit. In an advantageous embodiment, as more particularly illustrated, the first triangle defined above is substantially a right triangle whose base 13 defined above is one of the two sides of the right angle.
Dans une réalisation préférentielle qui justifie, d'une part la facilité de la fabrication de la cage avantageusement d'une seule pièce par usinage, moulage, etc, et d'autre part la résistance mécanique de la première nervure 11 telle qu'elle est ci-dessus définie, la paroi 14 de la première nervure 11 correspondant à l'autre io côté de l'angle droit de sa section transversale est en continuité de la face latérale 4 du corps 1, comme illustré sur toutes les figures. In a preferred embodiment which justifies, on the one hand the ease of manufacturing the cage advantageously in one piece by machining, molding, etc., and on the other hand the mechanical resistance of the first rib 11 as it is defined above, the wall 14 of the first rib 11 corresponding to the other side of the right angle of its cross section is in continuity with the lateral face 4 of the body 1, as illustrated in all the figures.
Avantageusement, comme illustré sur la figure 1, la paroi 15 de la première nervure 11 correspondant à l'hypoténuse de l'angle droit de sa section transversale est d'une forme sensiblement concave pour, tout d'abord faciliter le début de la 15 pénétration dans le corps osseux d'une vertèbre, et ensuite établir une résistance progressive à cette pénétration. Advantageously, as illustrated in FIG. 1, the wall 15 of the first rib 11 corresponding to the hypotenuse of the right angle of its cross section is of a substantially concave shape in order, first of all, to facilitate the start of the 15 penetration into the bony body of a vertebra, and then establish progressive resistance to this penetration.
Pour favoriser l'ostéosynthèse entre les deux vertèbres consécutives entre lesquelles a été implantée la cage, de façon bien connue en elle- même dans le cas de l'utilisation d'une telle cage inter-somatique, la cage selon l'invention comporte au 20 moins un orifice avantageusement traversant 5, comme illustré sur les figures 1 à 4, ou même plusieurs, comme illustré sur la figure 5, ces orifices traversants 5 relient les deux faces d'extrémités 2, 3. Chaque orifice traversant 5 débouche au moins par une ouverture 6 située dans la partie 7 de la première face d'extrémité 2 entourée par la première nervure i1. To promote osteosynthesis between the two consecutive vertebrae between which the cage has been implanted, in a manner well known in itself in the case of the use of such an inter-somatic cage, the cage according to the invention comprises at 20 minus one orifice advantageously passing through 5, as illustrated in FIGS. 1 to 4, or even several, as illustrated in FIG. 5, these through orifices 5 connect the two end faces 2, 3. Each through orifice 5 opens at least by an opening 6 located in the part 7 of the first end face 2 surrounded by the first rib i1.
De façon avantageuse, la cage comporte en outre, comme illustré sur les figures 2 à 5, une seconde nervure 21 réalisée sur la partie 7 définie ciavant de la première face d'extrémité 2, cette seconde nervure 21 entourant de façon continue l'ouverture 6 de l'orifice 5, et sa section transversale 22 définie dans un plan sensiblement perpendiculaire à la première face d'extrémité 2 a sensiblement la 30 forme d'un second triangle dont la base 23 est définie par le côté qui est situé sur cette première face d'extrémité. Advantageously, the cage further comprises, as illustrated in FIGS. 2 to 5, a second rib 21 produced on the part 7 defined above of the first end face 2, this second rib 21 continuously surrounding the opening 6 of the orifice 5, and its cross section 22 defined in a plane substantially perpendicular to the first end face 2 has substantially the shape of a second triangle whose base 23 is defined by the side which is located on this first end face.
Pour les mêmes raisons que celles exposées auparavant au sujet de la forme de la première nervure 11, le second triangle est sensiblement un triangle rectangle, sa base 23 étant un côté de l'angle droit et la paroi 24 de cette seconde nervure 21 correspondant à l'autre côté de l'angle droit de sa section transversale est avantageusement en continuité de la paroi 8 de l'orifice traversant 5. For the same reasons as those explained above regarding the shape of the first rib 11, the second triangle is substantially a right triangle, its base 23 being one side of the right angle and the wall 24 of this second rib 21 corresponding to the other side of the right angle of its cross section is advantageously in continuity with the wall 8 of the through orifice 5.
Dans le but essentiellement de faciliter la pose d'une telle cage intersomatique, c'est-à-dire son implantation entre deux vertèbres, la hauteur "h" s associée à la base 23 du second triangle est inférieure à la hauteur "H" associée à la base 13 du premier triangle, figure 3. With the main aim of facilitating the installation of such an interbody cage, that is to say its implantation between two vertebrae, the height "h" s associated with the base 23 of the second triangle is less than the height "H" associated with the base 13 of the first triangle, Figure 3.
Toujours pour favoriser l'implantation d'une telle cage, il est en outre avantageux que le sommet 19 de la première nervure 11 soit moins aigu que le sommet 29 de la seconde nervure 21. Still to favor the implantation of such a cage, it is also advantageous for the top 19 of the first rib 11 to be less acute than the top 29 of the second rib 21.
Bien entendu, étant donné que la cage doit s'ancrer de façon symétrique dans les deux vertèbres entre lesquelles elle aura été implantée, elle comportera de façon avantageuse, sur l'autre face d'extrémité 3, les mêmes nervures que les nervures 11, 21 réalisées sur la première face d'extrémité 2 qui ont été décrites ci-dessus. Of course, since the cage must be anchored symmetrically in the two vertebrae between which it will have been implanted, it will advantageously comprise, on the other end face 3, the same ribs as the ribs 11, 21 produced on the first end face 2 which have been described above.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0302124A FR2851457B1 (en) | 2003-02-21 | 2003-02-21 | INTER-SOMATIC CAGE WITH RIBS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0302124A FR2851457B1 (en) | 2003-02-21 | 2003-02-21 | INTER-SOMATIC CAGE WITH RIBS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2851457A1 true FR2851457A1 (en) | 2004-08-27 |
| FR2851457B1 FR2851457B1 (en) | 2005-10-28 |
Family
ID=32799477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0302124A Expired - Fee Related FR2851457B1 (en) | 2003-02-21 | 2003-02-21 | INTER-SOMATIC CAGE WITH RIBS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2851457B1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501269A (en) | 1981-12-11 | 1985-02-26 | Washington State University Research Foundation, Inc. | Process for fusing bone joints |
| EP0307241A2 (en) | 1987-09-11 | 1989-03-15 | John W. Brantigan | Surgical prosthetic implant |
| WO1989012431A1 (en) | 1988-06-13 | 1989-12-28 | Michelson Gary K | Threaded spinal implant |
| EP0599419A2 (en) * | 1992-11-26 | 1994-06-01 | ESKA Implants GmbH & Co. | Disk-shaped implant for reinforcing adjacent vertebrae |
| US5888222A (en) * | 1995-10-16 | 1999-03-30 | Sdgi Holding, Inc. | Intervertebral spacers |
| US20020022886A1 (en) * | 1998-01-23 | 2002-02-21 | Aesculap Ag & Co. Kg Am Aesculap-Platz | Intervertebral implant |
| EP1236451A1 (en) * | 2001-02-27 | 2002-09-04 | Co-Ligne AG | Medical implant |
-
2003
- 2003-02-21 FR FR0302124A patent/FR2851457B1/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501269A (en) | 1981-12-11 | 1985-02-26 | Washington State University Research Foundation, Inc. | Process for fusing bone joints |
| EP0307241A2 (en) | 1987-09-11 | 1989-03-15 | John W. Brantigan | Surgical prosthetic implant |
| WO1989012431A1 (en) | 1988-06-13 | 1989-12-28 | Michelson Gary K | Threaded spinal implant |
| EP0599419A2 (en) * | 1992-11-26 | 1994-06-01 | ESKA Implants GmbH & Co. | Disk-shaped implant for reinforcing adjacent vertebrae |
| US5888222A (en) * | 1995-10-16 | 1999-03-30 | Sdgi Holding, Inc. | Intervertebral spacers |
| US20020022886A1 (en) * | 1998-01-23 | 2002-02-21 | Aesculap Ag & Co. Kg Am Aesculap-Platz | Intervertebral implant |
| EP1236451A1 (en) * | 2001-02-27 | 2002-09-04 | Co-Ligne AG | Medical implant |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2851457B1 (en) | 2005-10-28 |
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Legal Events
| Date | Code | Title | Description |
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| ST | Notification of lapse |
Effective date: 20111102 |