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FR2762779A1 - Anatomical cage for intravertebral space - Google Patents

Anatomical cage for intravertebral space Download PDF

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Publication number
FR2762779A1
FR2762779A1 FR9705518A FR9705518A FR2762779A1 FR 2762779 A1 FR2762779 A1 FR 2762779A1 FR 9705518 A FR9705518 A FR 9705518A FR 9705518 A FR9705518 A FR 9705518A FR 2762779 A1 FR2762779 A1 FR 2762779A1
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France
Prior art keywords
cage
convex
walls
flat
faces
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Granted
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FR9705518A
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French (fr)
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FR2762779B1 (en
Inventor
Valentin Riemens
Kader Belhandouz
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Individual
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Individual
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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
    • A61F2/30767—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
    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/28—Bones
    • A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
    • 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
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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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    • A61F2002/3011—Cross-sections or two-dimensional shapes
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
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    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30261—Three-dimensional shapes parallelepipedal
    • 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
    • A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
    • 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
    • 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
    • A61F2002/30774—Apertures or holes, e.g. of circular cross section internally-threaded
    • 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
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    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
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    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
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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
    • 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

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The cage has upper (2) and lower walls (1) which are convex to follow the walls of the vertebrae. The side walls (5,6) are flat to reduce the size, with a front convex wall (3) and a flat rear wall (4). The upper and lower faces can have a rugous surface (10). The upper convex faces can have an oblique groove (7) which extends from one face to the other to support the grating. The flat side faces can have circular grooves (8) to aid circulation of the blood and reinforce the bone structure.

Description

La présente invention concerne une cage intersomatique anatomique destinée à s'interposer entre les corps vertébraux pour restaurer une hauteur et une statique convenable de l'espace discal lors d'une chirurgie rachidienne. The present invention relates to an anatomical interbody cage intended to be interposed between the vertebral bodies to restore a height and a suitable statics of the disc space during spinal surgery.

Plusieurs modèles de cages intersomatiques existent sur le marché.Elles sont de type cylindrique vissées, carrées ou rectangulaires à impacter .Tous ces modèles ne respectent pas l'anatomie du corps vertébral:
Les cages vissées nécessitent un fraisage du corps vertébral pour l'adapter à la forme de l'implant au risque de le fragiliser alors que les cages à sections carrées ou rectangulaires même si elles assurent une distraction durant l'implantation n'assurent que quelques points de contact instables entre leurs faces plates et le corps vertébral concave pouvant provoquer soit la déformation de l'espace discal soit la mobilité de la cage lors des premiers mouvements des corps vertébraux.Several models of intersomatic cages exist on the market. They are of the cylindrical type screwed, square or rectangular to impact. All these models do not respect the anatomy of the vertebral body:
Screwed cages require milling of the vertebral body to adapt it to the shape of the implant at the risk of weakening it while cages with square or rectangular sections even if they provide distraction during implantation only provide a few points of unstable contact between their flat faces and the concave vertebral body which can cause either the deformation of the disc space or the mobility of the cage during the first movements of the vertebral bodies.

La cage selon l'invention permet de remédier à ces inconvénients en partant du principe de l'adaptation de la cage à la forme anatomique du corps vertébral. En effet la cage selon l'invention en forme de parallélépipède possède des parois convexes en contact avec les parois concaves du corps vertébral. Ceci a pour effet d'augmenter la surface de contact et d'adapter la surface de la cage à celle du corps vertébral assurant une distraction stable de l'espace discal. The cage according to the invention overcomes these drawbacks on the basis of the principle of adapting the cage to the anatomical shape of the vertebral body. Indeed, the cage according to the invention in the shape of a parallelepiped has convex walls in contact with the concave walls of the vertebral body. This has the effect of increasing the contact surface and adapting the surface of the cage to that of the vertebral body ensuring stable distraction of the disc space.

Selon une conception avantageuse, I'implant selon l'invention possède donc deux parois convexes en contact avec les corps vertébraux ( supérieur et inférieur) concaves et deux faces latérales plates pour réduire l'encombrement et permettre d'insérer deux cages par espace inter vertébral afin d'obtenir une stabilité optimale. According to an advantageous design, the implant according to the invention therefore has two convex walls in contact with the concave vertebral bodies (upper and lower) and two flat lateral faces to reduce the bulk and allow two cages to be inserted per intervertebral space. in order to obtain optimal stability.

Selon une conception avantageuse , I'implant selon l'invention possède sur ses parois convexes une surface rugueuse évitant le risque de mobilité. According to an advantageous design, the implant according to the invention has on its convex walls a rough surface avoiding the risk of mobility.

Selon une caractéristique avantageuse, I'implant selon l'invention possède une large fente oblongue traversant la cage d'une face convexe à l'autre servant à mettre en place une greffe osseuse qui va permettre de relier entre eux les deux corps vertébraux et renforcer davantage la stabilité du montage. According to an advantageous characteristic, the implant according to the invention has a large oblong slit crossing the cage from one convex face to the other used to set up a bone graft which will make it possible to connect the two vertebral bodies together and strengthen more stable mounting.

Selon une caractéristique avantageuse l'implant possède sur ses parois latérales des fentes circulaires débouchant sur la fente oblongue afin de favoriser la circulation sanguine et de renforcer le pont osseux inter vertébral. According to an advantageous characteristic, the implant has on its lateral walls circular slits opening onto the oblong slit in order to promote blood circulation and to strengthen the intervertebral bone bridge.

Selon une autre disposition avantageuse la paroi antérieure de la cage est convexe et lisse pour faciliter son introduction dans l'espace intersomatique. According to another advantageous arrangement, the front wall of the cage is convex and smooth to facilitate its introduction into the intersomatic space.

Selon une autre disposition la paroi postérieure plate comporte un système (par exemple un filetage) pour permettre la mise en place d'un ancillaire qui sert à impacter la cage. According to another arrangement, the flat rear wall includes a system (for example a thread) to allow the installation of an ancillary which serves to impact the cage.

Selon une autre disposition l'implant possède les angles externes arrondis pour éviter de traumatiser les racines.  According to another arrangement, the implant has rounded external angles to avoid traumatizing the roots.

D'autre caractéristiques et avantages de l'invention se dégageront de la description qui va suivre en regard des dessins annexés qui ne sont donnés qu'à titre d'exemples non limitatifs
Les figures 1à3 représentent les différentes faces de l'implant selon l'invention
-La figure 1 est une vue des faces latérales plates de l'implant
-La figure 2 est une vue des faces convexes supérieure et inférieure de l'implant
-La figure 3 est une vue de la face postérieure de l'implant. Other characteristics and advantages of the invention will emerge from the description which follows with reference to the appended drawings which are given only by way of nonlimiting examples
Figures 1 to 3 show the different faces of the implant according to the invention
FIG. 1 is a view of the flat lateral faces of the implant
FIG. 2 is a view of the upper and lower convex faces of the implant
FIG. 3 is a view of the posterior face of the implant.

En référence à ces dessins ,on décrira ci-après la forme de l'implant objet de l'invention
Selon une caractéristique de l'invention l'implant est usiné avec un métal biocompatible par exemple de titane.With reference to these drawings, the form of the implant object of the invention will be described below.
According to a characteristic of the invention, the implant is machined with a biocompatible metal, for example titanium.

L'implant selon l'invention (fig 1) possède six faces différentes ,deux faces supérieure (2) et inférieure (1) identiques et convexes,deux faces latérales (5) (6) plates,une face antérieure (3) légèrement convexe et lisse et une face postérieure (4) plate. The implant according to the invention (fig 1) has six different faces, two identical (convex) upper (2) and lower (1) faces, two flat side faces (5) (6), a slightly convex front face (3) and smooth and a flat rear face (4).

Selon une caractéristique avantageuse les parois supérieure (2)et inférieure (1) sont convexes pour s'adapter aux corps vertébraux respectifs qui eux possèdent des parois concaves .Les parois de la cage (2) (1) viennent épouser la forme de la paroi du corps vertébral augmentant ainsi la surface de contact avec la vertèbre et rendant la distraction des corps vertébraux très stable.Afin d'augmenter l'accrochage des faces convexes(2) (1) aux parois des corps vertébraux une surface rugueuse(10) est créée à la surface des faces convexes (2) (1) grâce à un procédé n'appelant pas à un rajout de matière mais créant de petites perforations dans la surface du métal. According to an advantageous characteristic, the upper (2) and lower (1) walls are convex to adapt to the respective vertebral bodies which have concave walls. The walls of the cage (2) (1) conform to the shape of the wall of the vertebral body thus increasing the contact surface with the vertebra and making the distraction of the vertebral bodies very stable. In order to increase the bonding of the convex faces (2) (1) to the walls of the vertebral bodies a rough surface (10) is created on the surface of the convex faces (2) (1) thanks to a process not calling for an addition of material but creating small perforations in the surface of the metal.

Selon une autre caractéristique de l'invention, les parois convexes (2) et (1) possèdent une fente oblongue(7) qui traverse la cage d'une paroi (2) à l'autre (1) créant ainsi une communication entre les corps vertébraux. Cette fente (7) est destinée à loger une greffe osseuse pour créer un pont osseux entre les deux corps vertébraux après avoir restitué grâce à la cage un espace discal physiologique. According to another characteristic of the invention, the convex walls (2) and (1) have an oblong slot (7) which crosses the cage from one wall (2) to the other (1) thus creating communication between the vertebral bodies. This slot (7) is intended to house a bone graft to create a bone bridge between the two vertebral bodies after having restored, thanks to the cage, a physiological disc space.

Selon une autre caractéristique avantageuse les parois latérales (5) (6) de la cage sont plates pour permettre une introduction aisée de l'implant et réduire l'encombrement dans l'espace discal pour pouvoir implanter deux cages adjacentes. According to another advantageous characteristic, the side walls (5) (6) of the cage are flat to allow easy introduction of the implant and reduce the size in the disc space in order to be able to implant two adjacent cages.

Selon une conception avantageuse les parois latérales (5) (6) possèdent des fentes circulaires (8) débouchant sur la fente oblongue (7) étant destinées à fa favoriser la circulation sanguine entre la greffe et le milieu extérieur .Ces fentes circulaires (8) contribuent également à renforcer le pont osseux entre les corps vertébraux.  According to an advantageous design, the side walls (5) (6) have circular slits (8) opening onto the oblong slit (7) being intended to promote blood circulation between the graft and the external medium. These circular slits (8) also help strengthen the bone bridge between the vertebral bodies.

Selon une caractéristique de l'invention la paroi antérieure (3) de la cage est légèrement convexe et lisse permettant une insertion plus aisée de la cage. According to a characteristic of the invention the front wall (3) of the cage is slightly convex and smooth allowing easier insertion of the cage.

Selon une caractéristique de l'invention la paroi postérieure (4) est plate et comporte un système de fixation (9) pouvant être un filetage et destiné à
recevoir un ancillaire permettant de mettre en place la cage intersomatique.According to a characteristic of the invention, the rear wall (4) is flat and comprises a fixing system (9) which can be a thread and intended to
receive an ancillary to set up the interbody cage.

Selon une autre conception avantageuse les angles externes (11) de la cage constitues par l'intersection des différentes parois sont arrondis pour évite la lésion éventuelle des racines nerveuses et d'autres tissus mous  According to another advantageous design the external angles (11) of the cage formed by the intersection of the different walls are rounded to avoid possible damage to the nerve roots and other soft tissues

Claims (7)

REVENDICATIONCLAIM 1)-Cage intersomatique anatomique destinée à restituer un espace physiologique entre les corps vertébraux caractérisée en ce que ses parois supérieure (2) et inférieure (1) sont convexes,pour épouser les parois du corps vertébral, alors que les parois latérales (5) (6) sont plates pour réduire l'encombrement avec une paroi antérieure convexe (3) et une paroi postérieure plate (4)  1) -Anatomical intersomatic cage intended to restore a physiological space between the vertebral bodies characterized in that its upper (2) and lower (1) walls are convex, to match the walls of the vertebral body, while the lateral walls (5) (6) are flat to reduce bulk with a convex anterior wall (3) and a flat posterior wall (4) 2)-Cage intersomatique selon la revendication 1 caractérisée en ce que ses faces supérieure(2) et inférieure (1) convexes possèdent une surface rugueuse (10) par traitement de surface et sans raout de matière. 2) An intersomatic cage according to claim 1 characterized in that its convex upper (2) and lower (1) faces have a rough surface (10) by surface treatment and without any material. 3)-Cage intersomatique selon l'une quelconque des revendications 1 et 2 caractérisée en ce que les faces supérieure (2) et (1) convexes possèdent une fente oblongue (7) qui traverse la cage d'une face à l'autre et servant à maintenir la greffe. 3) -C intersomatic cage according to any one of claims 1 and 2 characterized in that the upper faces (2) and (1) convex have an oblong slot (7) which passes through the cage from one face to the other and used to maintain the transplant. 4)-Cage intersomatique selon la revendication 1 caractérisée en ce que les faces latérales (5) (6) plates possèdent des fentes circulaires (8) pour améliorer la circulation sanguine et renforcer le pont osseux. 4) -Insomatic cage according to claim 1 characterized in that the side faces (5) (6) flat have circular slots (8) to improve blood circulation and strengthen the bone bridge. 5)-Cage intersomatique selon la revendication 1 caractérisée en ce que la face postérieure (4) plate possède un dispositif de fixation (9) pour fixer l'ancillaire qui aidera à impacter la cage à son emplacement. 5) -Insomatic cage according to claim 1 characterized in that the posterior face (4) flat has a fixing device (9) for fixing the ancillary which will help to impact the cage at its location. 6)-Cage intersomatique selon la revendication 5 caractérisée en ce que le dispositif de fixation (9) pour l'ancillaire est un filetage. 6) -C intersomatic cage according to claim 5 characterized in that the fixing device (9) for the ancillary is a thread. 7)-Cage intersomatique selon la revendication 1 caractérisée en ce que les parois (2) (1) (3) (4) (5) (6) sont raccordées par des angles arrondis (11) pour éviter toute lésion des tissus nerveux.  7) -Insomatic cage according to claim 1 characterized in that the walls (2) (1) (3) (4) (5) (6) are connected by rounded angles (11) to avoid damage to the nervous tissue.
FR9705518A 1997-05-05 1997-05-05 ANATOMICAL CAGE FOR INTER VERTEBRAL SPACE Expired - Fee Related FR2762779B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1099429A1 (en) 1999-11-09 2001-05-16 Laciter Management Limited Interbody Fusion cage with crescent shaped lips (duckbill shaped)
WO2003061533A1 (en) 2002-01-17 2003-07-31 Concept Matrix, Llc Vertebral defect device
ES2211253A1 (en) * 2001-08-16 2004-07-01 Industrias Quirurgicas De Levante, S.L. Intersomatic cage for posterior fusion surgery to the lumbar column
US20050159816A1 (en) * 2000-10-24 2005-07-21 Howmedica Osteonics Corp. Barrel-shaped apparatus for fusing adjacent bone structure
EP1609445A1 (en) * 1999-01-11 2005-12-28 SDGI Holdings, Inc. Intervertebral spacers with side wall accessible interior cavity
US8137402B2 (en) 2002-01-17 2012-03-20 Concept Matrix Llc Vertebral defect device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349921A (en) * 1980-06-13 1982-09-21 Kuntz J David Intervertebral disc prosthesis
US5294391A (en) * 1991-06-03 1994-03-15 Acromed Corporation Method of making a fiber reinforced composite structure including randomizing the reinforcing fibers
US5522899A (en) * 1988-06-28 1996-06-04 Sofamor Danek Properties, Inc. Artificial spinal fusion implants
WO1996027348A1 (en) * 1995-03-08 1996-09-12 Synthes Ag, Chur Intervertebral implant
WO1997015248A1 (en) * 1995-10-20 1997-05-01 Synthes Ag Chur Inter-vertebral implant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349921A (en) * 1980-06-13 1982-09-21 Kuntz J David Intervertebral disc prosthesis
US5522899A (en) * 1988-06-28 1996-06-04 Sofamor Danek Properties, Inc. Artificial spinal fusion implants
US5294391A (en) * 1991-06-03 1994-03-15 Acromed Corporation Method of making a fiber reinforced composite structure including randomizing the reinforcing fibers
WO1996027348A1 (en) * 1995-03-08 1996-09-12 Synthes Ag, Chur Intervertebral implant
WO1997015248A1 (en) * 1995-10-20 1997-05-01 Synthes Ag Chur Inter-vertebral implant

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7534265B1 (en) 1999-01-11 2009-05-19 Warsaw Orthopedic, Inc. Intervertebral spacers with side wall accessible interior cavity
US8038714B2 (en) 1999-01-11 2011-10-18 Warsaw Orthopedic, Inc. Intervertebral spacers with side wall accessible interior cavity
EP1609445A1 (en) * 1999-01-11 2005-12-28 SDGI Holdings, Inc. Intervertebral spacers with side wall accessible interior cavity
EP1099429A1 (en) 1999-11-09 2001-05-16 Laciter Management Limited Interbody Fusion cage with crescent shaped lips (duckbill shaped)
US8870956B2 (en) * 2000-10-24 2014-10-28 Howmedica Osteonics Corp. Barrel-shaped apparatus for fusing adjacent bone structure
US20050159816A1 (en) * 2000-10-24 2005-07-21 Howmedica Osteonics Corp. Barrel-shaped apparatus for fusing adjacent bone structure
ES2211253A1 (en) * 2001-08-16 2004-07-01 Industrias Quirurgicas De Levante, S.L. Intersomatic cage for posterior fusion surgery to the lumbar column
EP1471854A4 (en) * 2002-01-17 2008-03-19 Concept Matrix Llc Vertebral defect device
US7534267B2 (en) 2002-01-17 2009-05-19 Concept Matrix, L.L.C. Methods of installing a vertebral defect device
US7674295B2 (en) 2002-01-17 2010-03-09 Concept Matrix, Llc Vertebral defect device
EP1471854A1 (en) * 2002-01-17 2004-11-03 Concept Matrix, LLC Vertebral defect device
US8137402B2 (en) 2002-01-17 2012-03-20 Concept Matrix Llc Vertebral defect device
US8167886B2 (en) 2002-01-17 2012-05-01 Concept Matrix, Llc Insertion tool for a vertebral defect device
WO2003061533A1 (en) 2002-01-17 2003-07-31 Concept Matrix, Llc Vertebral defect device

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