FR2805457A1 - INTERVERTEBRAL IMPLANT A BODY AND FACE SUPPORT - Google Patents
INTERVERTEBRAL IMPLANT A BODY AND FACE SUPPORT Download PDFInfo
- Publication number
- FR2805457A1 FR2805457A1 FR0002320A FR0002320A FR2805457A1 FR 2805457 A1 FR2805457 A1 FR 2805457A1 FR 0002320 A FR0002320 A FR 0002320A FR 0002320 A FR0002320 A FR 0002320A FR 2805457 A1 FR2805457 A1 FR 2805457A1
- Authority
- FR
- France
- Prior art keywords
- implant according
- block
- implant
- blade
- bearing faces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
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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
- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/8635—Tips of screws
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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
- A61F2/28—Bones
- A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
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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
- 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
- A61F2002/30182—Other 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
- 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
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- A61F2002/30197—Omega-shaped
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30261—Three-dimensional shapes parallelepipedal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/3028—Three-dimensional shapes polyhedral different from parallelepipedal and pyramidal
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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
- 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
- A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
- A61F2002/30324—The prosthesis having different structural features at different locations within the same prosthesis differing in thickness
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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
- 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
- A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—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
- A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
- A61F2002/30566—Helical springs
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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
- 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
- A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
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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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- A61F2002/30316—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
- A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
- A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
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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
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- 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
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- A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—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
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
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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
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- A—HUMAN NECESSITIES
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- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0036—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in thickness
Landscapes
- 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
Description
La présente invention concerne les systèmes de liaisons vertébrales. The present invention relates to vertebral binding systems.
Lors de pathologies discales, une thérapie souvent utilisée consiste essentiellement à effectuer une ostéosynthèse par l'utilisation de cages rigides comportant une cavité ouverte vers les vertèbres supérieure et inférieure, apte à recevoir du greffon osseux ou toute autre substance favorisant la repousse osseuse. D'autre part, il est reconnu la repousse osseuse permettant d'obtenir la fusion recherchée est stimulée et accélérée proportionnellement aux contraintes subites par le greffon. Cependant au delà d'une certaine limite, les contraintes deviennent trop importantes et provoquent de ce fait effet inverse sur la qualité de la repousse osseuse, voire la nécrose des tissus osseux. Les cages actuellement existantes absorbent la quasi totalité des contraintes sans déformation du fait de leur rigidité importante. Ainsi, le greffon n'est quasiment pas stimulé, ce qui ne permet pas d'avoir les meilleurs conditions pour l'obtention d'une fusion. Tel est le cas de l'implant décrit dans le document W097/37620. Ce document décrit une cage-plaque présentant un corps ouvert rigide de forme globalement parallélipipédique ou ovoïde destinée à recevoir du greffon grâce à des faces supérieure et inférieure ouvertes. Les matériaux utilisés pour la fabrication de tels implants ne permettent pas l'optimisation de la fusion. In the case of disc diseases, a therapy that is often used consists essentially of performing osteosynthesis by using rigid cages having an open cavity towards the upper and lower vertebrae, capable of receiving bone graft or any other substance that promotes bone regrowth. On the other hand, it is recognized the bone regrowth to obtain the desired fusion is stimulated and accelerated proportionally to the constraints experienced by the graft. However, beyond a certain limit, the stresses become too great and thus have an opposite effect on the quality of the bone regrowth, or even the necrosis of the bone tissues. The currently existing cages absorb almost all stresses without deformation because of their high rigidity. Thus, the graft is almost not stimulated, which does not allow to have the best conditions for obtaining a merger. This is the case of the implant described in WO97 / 37620. This document describes a cage-plate having a rigid open body of globally parallelepipedal or ovoid shape intended to receive graft with open upper and lower faces. The materials used to manufacture such implants do not allow optimization of the fusion.
D'autre part, ce type de cage implantable ne laisse pas au chirurgien la possibilité de choisir la restauration d'une certaine mobilité entre les deux vertèbres instrumentées, en lieu et place de la fusion. En effet, dans certains cas, il est plus judicieux de restaurer mobilité à l'étage vertébral pathologique que d'en effectuer l'arthrodèse. C'est le cas pour des patients jeunes et/ou aillant des corps vertébraux en excellent etat, où la réintervention ultérieure est certaine les étages adjacents -à l'étage instrumenté, si on effectue une fusion. On the other hand, this type of implantable cage does not allow the surgeon the opportunity to choose the restoration of a certain mobility between the two instrumented vertebrae in place of fusion. Indeed, in some cases, it is more sensible to restore mobility to the pathological vertebral stage than to perform arthrodesis. This is the case for young patients and / or having vertebral bodies in excellent condition, where the subsequent reoperation is certain stages adjacent to the instrumented stage, if performing a fusion.
Un but de la présente invention est de fournir un implant assurant une fusion osseuse optimisée et de permettre le choix entre cette fusion et une restauration de la mobilité. An object of the present invention is to provide an implant ensuring optimized bone fusion and to allow the choice between this fusion and a restoration of mobility.
En vue de la réalisation de ce but, on prévoit selon la presente invention un implant intervertébral comprenant corps rigide présentant deux faces d'appui sur les plateaux de deux vertèbres adjacentes et déformable élastiquement avant réception du bloc, en permettant de rapprocher les deux faces d'appui l'une de l'autre, et une cavité de réception d'un bloc de matériau. In order to achieve this goal, according to the present invention an intervertebral implant comprising a rigid body having two bearing faces on the trays of two adjacent vertebrae and elastically deformable before receiving the block, allowing to bring the two faces closer together. support one another, and a receiving cavity of a block of material.
Ainsi, dans le cas d'une fusion, la déformabilité du corps permet une meilleure fusion car les contraintes seront mieux réparties entre la structure et le greffon. Dans le cas d'une restauration de mobilité, déformabilité du corps permet à l'implant de l'assurer. Thus, in the case of a fusion, the deformability of the body allows a better fusion because the constraints will be better distributed between the structure and the graft. In the case of a mobility restoration, deformability of the body allows the implant to ensure it.
Avantageusement, le corps est d'une seule pièce. Avantageusement, le corps comporte une lame pliée formant faces d'appui. Advantageously, the body is in one piece. Advantageously, the body comprises a folded blade forming bearing faces.
Avantageusement, la lame présente une épaisseur non uniforme le long de la lame. Ainsi, la déformation du corps est optimisée pour emploi de l'implant et pour la déformation recherchée. Advantageously, the blade has a non-uniform thickness along the blade. Thus, the deformation of the body is optimized for use of the implant and for the deformation sought.
Avantageusement, la lame définit moins en partie la cavité. Advantageously, the blade defines less part of the cavity.
Avantageusement, le corps présente une zone de 'onction des faces d'appui. Advantageously, the body has an area of anointing support faces.
Avantageusement, la zone de jonction et les faces d'appui donnent au corps un profil en U . Avantageusement, au moins une des faces d'appui comporte un profil adapté et complémentaire au profil du plateau vertébral avec lequel elle destinée à entrer en contact. Advantageously, the junction zone and the bearing faces give the body a U-shaped profile. Advantageously, at least one of the bearing faces comprises a profile adapted and complementary to the profile of the vertebral plate with which it is intended to come into contact.
Avantageusement, le corps comporte moyens d'ancrage à une face des vertèbres contiguë plateau vertébral. Advantageously, the body comprises means for anchoring one side of the vertebrae contiguous vertebral plateau.
Avantageusement, le corps comporte moins deux pattes d'ancrage aux vertèbres respectives, chaque patte s'étendant en continuité de matière avec une seule des faces d'appui. Advantageously, the body comprises at least two anchoring tabs to the respective vertebrae, each tab extending in continuity of material with only one of the support faces.
Avantageusement, chaque patte étend en continuité de matière avec la face d'appui destinée à etre en appui sur le plateau de la vertèbre associé à cette patte. Advantageously, each tab extends in continuity of material with the support surface intended to be resting on the plate of the vertebra associated with this tab.
Avantageusement, chaque patte étend en continuité de matière avec la face d'appui destinée à etre en appui sur le plateau vertébral associé à l'autre patte. Advantageously, each tab extends in continuity of material with the bearing surface intended to be supported on the vertebral plate associated with the other leg.
Avantageusement, chaque patte fixation comporte au moins un orifice destiné à recevoir une vis osseuse. Avantageusement, le corps comprend un bloc en materiau non rigide. Advantageously, each fixing lug comprises at least one orifice intended to receive a bone screw. Advantageously, the body comprises a block of non-rigid material.
Avantageusement, le bloc comporte du greffon osseux et/ou toute substance favorisant la repousse osseuse. Advantageously, the block comprises bone graft and / or any substance promoting bone regrowth.
Ainsi l'implant peut réaliser une fusion. Avantageusement, le bloc comporte du ou des polymères biocompatibles et/ou tout autre matériau viscoélastique biocompatible. Thus the implant can perform a fusion. Advantageously, the block comprises biocompatible polymer (s) and / or any other biocompatible viscoelastic material.
Ainsi, l'implant fait office de prothèse de disque permettant la restauration de la mobilité. Thus, the implant acts as a disk prosthesis allowing the restoration of mobility.
On prévoit d'autre part une méthode d'implantation de l'implant comprenant un abord de la colonne vertébrale selon une voie antérieure, une discectomie, un avivement des plateaux inferieur et superieur de l'espace discal, une vérification des dimensions de l'espace discal, le choix du type de bloc suivant que l'on désire une fusion ou une restauration de mobilité, une insertion de l'implant dans l'espace discal préparé, l'ancrage de l'implant sur corps vertébraux, la fermeture de la voie d'abord. On the other hand, there is provided a method of implantation of the implant comprising an approach of the spine in an anterior way, a discectomy, an advancement of the lower and upper trays of the disc space, a verification of the dimensions of the spine. disc space, the choice of the next block type that is desired fusion or restoration of mobility, insertion of the implant in the prepared disc space, anchoring of the implant on vertebral bodies, closure of the way first.
D'autres caractéristiques et avantages de l'invention apparaîtront encore lors de la description qui suit d'un mode préféré de réalisation d'une variante donnés à titre d'exemples non limitatifs. Aux dessins annexés la figure la est une vue en perspective de l'implant selon l'invention selon un premier mode de réalisation; - figure lb est une vue de dessus de l'implant selon le premier mode de réalisation ; - figure 2 est une vue en perspective d'une des vis à de la figure 1 ; - la figure 3 est une vue en perspective d'un bloc selon le premier mode de réalisation ; - la figure 4 est une vue en perspective corps selon premier mode de réalisation ; la figure 5 est une vue de coté du corps selon le premier mode de réalisation ; - la figure 6 est une vue en perspective corps selon second mode de réalisation ; la figure 7 est une vue de coté du corps selon le second mode de réalisation ; - la figure 8 est une vue de coté dans un plan sagittal d'une vertèbre cervicale. Other features and advantages of the invention will become apparent from the following description of a preferred embodiment of a variant given as non-limiting examples. In the accompanying drawings, FIG. 1a is a perspective view of the implant according to the invention according to a first embodiment; FIG. 1b is a view from above of the implant according to the first embodiment; - Figure 2 is a perspective view of one of the screws to Figure 1; FIG. 3 is a perspective view of a block according to the first embodiment; - Figure 4 is a perspective view of the body according to the first embodiment; Figure 5 is a side view of the body according to the first embodiment; FIG. 6 is a body perspective view according to a second embodiment; Figure 7 is a side view of the body according to the second embodiment; - Figure 8 is a side view in a sagittal plane of a cervical vertebra.
En référence aux figures la à 5, l'implant 1 comprend un corps 2 déformable élastiquement, un bloc 3 inclus au sein du corps 2 et des vis à os 4 de fixation. With reference to FIGS. 1a to 5, the implant 1 comprises a body 2 elastically deformable, a block 3 included within the body 2 and bone screws 4 fixing.
Le corps 2 est formé d'une lame décrivant un chemin ressemblant à un a . La boucle du a, comprend une face d'appui inférieure 10, un mur postérieur 11 reliant la face 10 à une face d'appui supérieure 12, l'ensemble décrivant une forme en U . Les faces d'appui 10,12 sont opposées l'une à l'autre et s'étendent généralement dans deux plan parallèles entre eux. Cette boucle est de forme généralement parallélipipédique pour remplir au maximum l'espace discal. Cette boucle délimite une cavité 20 qui est apte à recevoir le bloc 3. Ce bloc 3 pourra être constitué soit de greffon osseux ou de toute autre substance qui favorise la repousse osseuse comme les substituts osseux, soit d'un polymère biocompatible ou de tout autre matériau viscoélastique biocompatible. Dans le premier cas, l'implant 1 sera utilisé dans le but obtenir une fusion entre les deux vertèbres instrumentées. La déformabilité élastique de la lame en permet d'obtenir une répartition des contraintes entre le corps 2 et le bloc 3 constitué de greffon osseux Ainsi les contraintes supportées par le greffon permettent à ce dernier de produire un os de meilleure qualite pour la fusion. Dans le second cas, l'implant 1 sera utilisé dans le but de restaurer la mobilité entre les deux vertèbres instrumentées. La déformabilité élastique de la lame en a associée à la viscoélasticité du bloc 3 permet de reproduire les réactions mécaniques du disque vertébral naturel sain remplacé par l'implant 1. The body 2 is formed of a blade describing a path resembling a. The loop of the a comprises a lower bearing face 10, a posterior wall 11 connecting the face 10 to an upper bearing face 12, the assembly describing a U-shape. The bearing faces 10, 12 are opposite to each other and generally extend in two planes parallel to each other. This loop is of generally parallelepipedal shape to fill the disc space as much as possible. This loop defines a cavity 20 which is able to receive the block 3. This block 3 may consist of either bone graft or any other substance that promotes bone regrowth such as bone substitutes, or a biocompatible polymer or any other biocompatible viscoelastic material. In the first case, the implant 1 will be used in order to obtain a fusion between the two instrumented vertebrae. The elastic deformability of the blade allows to obtain a distribution of stresses between the body 2 and the block 3 consisting of bone graft Thus the stresses supported by the graft allow the latter to produce a bone of better quality for fusion. In the second case, the implant 1 will be used in order to restore the mobility between the two instrumented vertebrae. The elastic deformability of the blade associated with the viscoelasticity of block 3 makes it possible to reproduce the mechanical reactions of the healthy natural vertebral disc replaced by implant 1.
Les branches du profil en a du corps 2 comprennent deux pattes 13 prolongeant la face d'appui inférieure 10 à angle droit avec celui-ci et permettant la fixation de l'implant 1 sur le corps de la vertèbre supérieure, et une patte 14 prolongeant la face d'appui supérieure 12 à angle droit avec celui-ci et permettant la fixation de implant sur le corps de la vertèbre inférieure. En de dessus, comme représenté sur la figure lb, les pattes 13,14 sont inclinées l'une par rapport à l'autre pour être orientées de manière à suivre la courbure du mur antérieur des corps vertébraux auxquels elles sont fixées. Chacune des pattes 13,14 comportent au moins un orifice 15 qui est apte à recevoir une vis à os 4 avec une tête 5 pour la fixation dans le corps vertébral. L'orifice 15, de section généralement circulaire de préférence, comporte une surface 18 apte à recevoir la tête 5 de la vis à os 4. La surface 18 est sensiblement complémentaire de la surface 7 de la tête 5 de la vis à os 4 contiguë à la tige filetée. D'autre part, chacune des vis à os 4 comprend des moyens de mise en oeuvre 8 sous la forme d'une empreinte en creux de section hexagonale, un filetage à os 6 et une entaille 9 située à l'extrémite opposée de la tête 5, selon l'axe de la vis qui permet l'autotaraudage de la vis dans le corps vertébral. The branches of the profile a of the body 2 comprise two lugs 13 extending the lower bearing surface 10 at right angles thereto and allowing the attachment of the implant 1 to the body of the upper vertebra, and a lug 14 extending the upper bearing surface 12 at right angles thereto and allowing the fixation of the implant on the body of the lower vertebra. From above, as shown in Figure lb, the tabs 13,14 are inclined relative to each other to be oriented to follow the curvature of the anterior wall of the vertebral bodies to which they are attached. Each of the lugs 13, 14 comprise at least one orifice 15 which is able to receive a bone screw 4 with a head 5 for fixation in the vertebral body. The orifice 15, of generally circular cross section preferably, comprises a surface 18 adapted to receive the head 5 of the bone screw 4. The surface 18 is substantially complementary to the surface 7 of the head 5 of the adjacent bone screw 4 to the threaded rod. On the other hand, each of the bone screws 4 comprises processing means 8 in the form of a cavity recess of hexagonal section, a bone thread 6 and a notch 9 located at the opposite end of the head. 5, according to the axis of the screw that allows the self-tapping of the screw in the vertebral body.
Les parties de la lame faisant office de faces d'appui inférieure 10 et supérieure 12 sont conformées pour épouser au maximum la forme des plateaux vertébraux avec lesquels elles sont en contact. Ainsi l'implant est mieux stabilisé dans l'espace discal Dans le mode de réalisation présenté dans les figures la à 5, les faces d'appui 10,12 sont conformées pour s'adapter aux plateaux vertébraux d'une vertèbre cervicale 40 présentée figure 8. La vertèbre cervicale 40 comporte un corps vertébral 41 présentant un plateau supérieur avec une face 43 et un plateau inférieur avec une face 42. En coupe suivant le plan sagittal médian à la figure 8, le plateau supérieur 43 de la vertèbre à un profil sensiblement rectiligne horizontal alors que le plateau inférieur 42 a un profil concave en aile d'avion complémentaire de celui convexe du plateau supérieur 12 du corps 2 comme il est décrit ci-après. La face d'appui inférieure 10 du corps 2 est apte à venir en contact avec le plateau 43 de la vertèbre 40. De ce fait, la face d'appui inférieure 10 a un profil sensiblement rectiligne horizontal dans le plan sagittal. La face d'appui supérieure 12 du corps 2 est apte à venir en contact avec la plateau 42 de la vertèbre 40. De ce fait, la face d'appui supérieure 12 présente un profil constitué de deux tronçons de forme générale rectiligne 16,17 inclinés l'un par rapport à l'autre pour donner à ce profil une forme convexe. Le tronçon arrière 16 est plus long des deux tronçons. Il s'étend, dans le plan sagittal, sur environ<B>80%</B> de la longueur du corps 2 Le tronçon 16 est légèrement incliné vers l'arrière du corps 2. Il est donc légèrement incliné rapport à la face d'appui inférieure 10. Le tronçon 17 est incliné vers l'avant du corps plus fortement que l'inclinaison du tronçon arrière 16 vers l'arrière. Sa longueur est environ égale au quart de celle tronçon arrière 16. Les deux tronçons 16,17 donnent la face d'appui supérieure 12 un profil proche de celui d'une aile d'avion. The parts of the blade acting as lower and upper bearing faces 12 are shaped to conform as much as possible to the shape of the vertebral plates with which they are in contact. Thus, the implant is better stabilized in the disc space. In the embodiment shown in FIGS. 1a to 5, the bearing faces 10, 12 are shaped to fit the vertebral endplates of a cervical vertebra 40 shown in FIG. 8. The cervical vertebra 40 has a vertebral body 41 having an upper plate with a face 43 and a lower plate with a face 42. In section along the median sagittal plane in Figure 8, the upper plate 43 of the vertebra to a profile substantially straight horizontal whereas the lower plate 42 has a concave profile in the airplane wing complementary to the convex one of the upper plate 12 of the body 2 as described below. The lower bearing surface 10 of the body 2 is able to come into contact with the plate 43 of the vertebra 40. As a result, the lower bearing face 10 has a substantially horizontal straight profile in the sagittal plane. The upper bearing face 12 of the body 2 is able to come into contact with the plate 42 of the vertebra 40. As a result, the upper bearing face 12 has a profile consisting of two sections of generally rectilinear shape 16, 17 inclined relative to each other to give this profile a convex shape. The rear section 16 is longer than the two sections. It extends, in the sagittal plane, about 80% of the length of the body 2 The section 16 is slightly inclined towards the rear of the body 2. It is therefore slightly inclined relative to the face lower support 10. The section 17 is inclined towards the front of the body more strongly than the inclination of the rear section 16 towards the rear. Its length is approximately equal to a quarter of that rear section 16. The two sections 16,17 give the upper bearing surface 12 a profile close to that of an aircraft wing.
Les faces d'appui 10,12 comportent au moins un orifice 30 traversant l'épaisseur de la lame, de section préférentiellement circulaire. Cet orifice 30 met en communication la cavité interne 20 à la structure 2 avec la face d'appui 12 ou la face d'appui 10. Dans le cas du choix d'une fusion, cet orifice 30 permet la progression la fusion vers les plateaux 42,43 des vertèbres adjacentes. Dans le cas du choix d'une restauration de mobilité, cet orifice 30 permet un renforcement de l'ancrage, car il y a repousse osseuse au sein de l'orifice 30 qui le recomblera sur l'épaisseur de la lame Préférentiellement, les faces d'appui 10,12 comportent une multitude d'orifices 30 de section circulaire et 'formément répartis sur faces d'appui 10, 12. The bearing faces 10, 12 comprise at least one orifice 30 passing through the thickness of the blade, of preferentially circular section. This orifice 30 communicates the internal cavity 20 to the structure 2 with the bearing surface 12 or the bearing face 10. In the case of the choice of a fusion, this orifice 30 allows the progression of the fusion towards the trays 42.43 adjacent vertebrae. In the case of the choice of a mobility restoration, this orifice 30 makes it possible to strengthen the anchoring, since there is bone regrowth within the orifice 30 which will recomble it on the thickness of the blade. Preferably, the faces 10,12 include a plurality of orifices 30 of circular section and 'formally distributed on bearing faces 10, 12.
La déformation du corps 2 est maîtrisée par les variations de l'épaisseur de la lame le long du profil que décrit la face d'appui 12, le mur postérieur 11 et la face d'appui 10. Ainsi, la répartition de contraintes entre le corps 2 et le bloc 3 est optimisée. The deformation of the body 2 is controlled by the variations in the thickness of the blade along the profile described by the bearing face 12, the posterior wall 11 and the bearing face 10. Thus, the distribution of stresses between the body 2 and block 3 is optimized.
La cavité 20 apte à recevoir le bloc 3. Le choix de la composition du bloc 3 dépend de la volonté du chirurgien d'obtenir soit une fusion entre les deux vertèbres dans le cadre d'une arthrodèse, soit de restaurer une mobilite entre les deux vertèbres. Dans le premier cas, le bloc 3 sera constitué de greffon osseux et/ou de toute autre substance favorisant la repousse osseuse. Dans le deuxième cas, le bloc 3 sera constitué d'un ou de plusieurs polymères biocompatibles ou de tout autre matériau viscoélastique biocompatible. Le bloc 3 présente surface externe complémentaire de celle de la cavité pour une parfaite adéquation avec la forme de la cavité 20 qui est délimité par le profil de la lame du corps 2 : la surface 10a est complémentaire de la face d'appui inférieure 10 du corps 2. La surface 12a est complémentaire de la face d'appui supérieure 12 du corps 2 et est constitué de deux tronçons 16a,17a complémentaires des tronçons <B>16,17</B> de la face d'appui 12. De même, la surface 11a est complémentaire la face interne du mur postérieur 11 du corps 2. The cavity 20 capable of receiving the block 3. The choice of the composition of the block 3 depends on the will of the surgeon to obtain either a fusion between the two vertebrae as part of an arthrodesis, or to restore a mobility between the two vertebrae. In the first case, the block 3 will consist of bone graft and / or any other substance promoting bone growth. In the second case, the block 3 will consist of one or more biocompatible polymers or any other biocompatible viscoelastic material. The block 3 has an external surface complementary to that of the cavity for a perfect match with the shape of the cavity 20 which is delimited by the profile of the blade of the body 2: the surface 10a is complementary to the lower bearing face 10 of the 2. The surface 12a is complementary to the upper bearing face 12 of the body 2 and consists of two sections 16a, 17a complementary to the sections <B> 16,17 </ B> of the bearing face 12. From even, the surface 11a is complementary to the inner face of the posterior wall 11 of the body 2.
La mise en place de l'implant 1 dans le corps du patient s'effectue au travers d'une voie d'abord antérieure qui permet d'accéder directement aux corps vertébraux, et sur leur face antérieure. Le praticien y effectue une discectomie du disque intervertébral endommagé puis avive les plateaux inférieur de la vertèbre supérieure, et supérieur de la vertèbre inférieure délimitant l'espace discal. Après avoir vérifié la taille de cet espace discal ainsi dégagé, praticien prépare l'implant 1 à l'implantation : si le praticien décide de réaliser une fusion, il introduit dans la cavité 20 un bloc 3 de greffon et/ou de toute autre substance favorisant la repousse osseuse ; si le praticien décide de restaurer la mobilite, il introduit dans la cavité 20 un bloc 3 constitué de polymère (s) biocompatible(s) ou de tout autre matériau viscoélastique biocompatible. Une fois préparé, le praticien met en place l'implant 1 qu'il fixe avec les vis à os 4 aux corps vertébraux, au travers orifices 15 des pattes de fixation 13,14. Il referme ensuite la voie d'abord. Implantation of the implant 1 into the body of the patient takes place through an anterior approach which allows direct access to the vertebral bodies, and on their anterior face. The practitioner performs a discectomy of the damaged intervertebral disc then brightens the lower trays of the superior vertebra, and superior of the lower vertebra delimiting the disc space. After verifying the size of this disc space thus cleared, practitioner prepares the implant 1 for implantation: if the practitioner decides to perform a fusion, he introduces into the cavity 20 a block 3 of graft and / or other substance promoting bone regrowth; if the practitioner decides to restore the mobility, he introduces into the cavity 20 a block 3 made of biocompatible polymer (s) or any other biocompatible viscoelastic material. Once prepared, the practitioner sets up the implant 1 which he fixes with the bone screws 4 to the vertebral bodies, through orifices 15 of the fixing lugs 13, 14. He then closes the way first.
Dans second mode de réalisation illustré par les figures 6 et 7, le corps 102 de l'implant est toujours formé d'une lame qui décrit un chemin ressemblant a un U . Il comporte toujours une face d'appui inférieure 110 similaire à la face d'appui 10 précédente, un mur postérieur 111 similaire au mur 11 précédent, une face d'appui supérieure 112 similaire à la face appui supérieure 12 précédente. La fixation à la vertèbre sus-jacente s'effectue par une patte de fixation 113 prolongeant la face d'appui supérieure 112. La fixation à la vertèbre sous-jacente s'effectue par deux pattes de fixation 114 prolongeant la face d'appui inférieure 110. Les moyens d'ancrages sont identiques que ceux du mode de réalisation précédent. La lame a ici une forme en U et non plus une forme en a sorte que les deux branches su U ne se croisent , comme dans le mode précédent. La lame en U du corps 112 délimite un cavité 20 identique apte à recevoir le bloc 3. La mise en place de ce second mode réalisation ne diffère pas de mise en place du premier mode de réalisation. In a second embodiment illustrated in FIGS. 6 and 7, the body 102 of the implant is always formed of a blade that describes a path resembling a U. It always has a lower bearing surface 110 similar to the previous bearing surface 10, a rear wall 111 similar to the previous wall 11, an upper bearing face 112 similar to the upper bearing surface 12 above. The attachment to the overlying vertebra is effected by a fixing lug 113 extending the upper bearing face 112. The attachment to the underlying vertebra is effected by two fixing lugs 114 extending the lower bearing surface. 110. The anchoring means are identical to those of the previous embodiment. The blade here has a U-shape and no longer a shape so that the two branches su U intersect, as in the previous mode. The U-shaped blade of the body 112 defines an identical cavity 20 capable of receiving the block 3. The implementation of this second embodiment does not differ from the implementation of the first embodiment.
lame peut être remplacée un ressort hélicoïdal apte à recevoir un bloc de biomatériaux en son âme. blade can be replaced a helical spring adapted to receive a block of biomaterials in his soul.
vis osseuses peuvent comporter un mécanisme de blocage vis-à-vis des pattes de fixation pour éviter leur recul. bone screws may have a locking mechanism vis-à-vis the brackets to prevent their recoil.
vis osseuses peuvent être polyaxiales vis-à- vis pattes de fixation.Bone screws may be polyaxial with respect to mounting lugs.
Claims (16)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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FR0002320A FR2805457B1 (en) | 2000-02-24 | 2000-02-24 | INTERVERTEBRAL IMPLANT WITH BODY AND SUPPORT SIDE |
AU2001235741A AU2001235741A1 (en) | 2000-02-24 | 2001-02-22 | Intervertebral implant with rigid body and support surfaces |
PCT/FR2001/000515 WO2001062190A1 (en) | 2000-02-24 | 2001-02-22 | Intervertebral implant with rigid body and support surfaces |
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FR0002320A FR2805457B1 (en) | 2000-02-24 | 2000-02-24 | INTERVERTEBRAL IMPLANT WITH BODY AND SUPPORT SIDE |
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FR2805457A1 true FR2805457A1 (en) | 2001-08-31 |
FR2805457B1 FR2805457B1 (en) | 2002-10-11 |
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FR0002320A Expired - Fee Related FR2805457B1 (en) | 2000-02-24 | 2000-02-24 | INTERVERTEBRAL IMPLANT WITH BODY AND SUPPORT SIDE |
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FR (1) | FR2805457B1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2002080823A1 (en) * | 2001-04-04 | 2002-10-17 | Rapp Lawrence G | Interbody spinal fusion device |
WO2004030582A2 (en) * | 2002-10-02 | 2004-04-15 | Sdgi Holdings, Inc. | Modular intervertebral prosthesis system |
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US9867718B2 (en) | 2014-10-22 | 2018-01-16 | DePuy Synthes Products, Inc. | Intervertebral implants, systems, and methods of use |
CN104546229B (en) * | 2015-01-19 | 2017-01-04 | 南京航空航天大学 | A kind of cervical artificial disc of the corner cut Ω type structure with superelevation mobility |
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- 2000-02-24 FR FR0002320A patent/FR2805457B1/en not_active Expired - Fee Related
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- 2001-02-22 WO PCT/FR2001/000515 patent/WO2001062190A1/en active Application Filing
- 2001-02-22 AU AU2001235741A patent/AU2001235741A1/en not_active Abandoned
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DE4012622C1 (en) * | 1990-04-20 | 1991-07-18 | Eska Medical Luebeck Medizintechnik Gmbh & Co, 2400 Luebeck, De | Two-part metal vertebra implant - has parts locked by two toothed racks, pre-stressed by elastic cushion between both implant parts |
US5423816A (en) * | 1993-07-29 | 1995-06-13 | Lin; Chih I. | Intervertebral locking device |
US5645599A (en) * | 1994-07-26 | 1997-07-08 | Fixano | Interspinal vertebral implant |
US5676702A (en) * | 1994-12-16 | 1997-10-14 | Tornier S.A. | Elastic disc prosthesis |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002080823A1 (en) * | 2001-04-04 | 2002-10-17 | Rapp Lawrence G | Interbody spinal fusion device |
US7887588B2 (en) | 2001-04-04 | 2011-02-15 | Rapp Lawrence G | Interbody spinal fusion device |
WO2004030582A2 (en) * | 2002-10-02 | 2004-04-15 | Sdgi Holdings, Inc. | Modular intervertebral prosthesis system |
WO2004030582A3 (en) * | 2002-10-02 | 2004-05-27 | Sdgi Holdings Inc | Modular intervertebral prosthesis system |
US6899735B2 (en) | 2002-10-02 | 2005-05-31 | Sdgi Holdings, Inc. | Modular intervertebral prosthesis system |
Also Published As
Publication number | Publication date |
---|---|
FR2805457B1 (en) | 2002-10-11 |
AU2001235741A1 (en) | 2001-09-03 |
WO2001062190A1 (en) | 2001-08-30 |
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