FR2880256A1 - Vertebral osteosynthesis system for immobilizing vertebras, has bar with thickness lower than width, and selected based on elastic characteristics of bar metal and average distance separating two pedicle screws to allow elastic flexion - Google Patents

Vertebral osteosynthesis system for immobilizing vertebras, has bar with thickness lower than width, and selected based on elastic characteristics of bar metal and average distance separating two pedicle screws to allow elastic flexion Download PDF

Info

Publication number
FR2880256A1
FR2880256A1 FR0453271A FR0453271A FR2880256A1 FR 2880256 A1 FR2880256 A1 FR 2880256A1 FR 0453271 A FR0453271 A FR 0453271A FR 0453271 A FR0453271 A FR 0453271A FR 2880256 A1 FR2880256 A1 FR 2880256A1
Authority
FR
France
Prior art keywords
bar
osteosynthesis system
vertebral osteosynthesis
vertebral
proximal coupling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR0453271A
Other languages
French (fr)
Other versions
FR2880256B1 (en
Inventor
Patrice Moreau
Pierre Jacques Finiels
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Neuro France Implants NFI SARL
Original Assignee
Neuro France Implants NFI SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Neuro France Implants NFI SARL filed Critical Neuro France Implants NFI SARL
Priority to FR0453271A priority Critical patent/FR2880256B1/en
Publication of FR2880256A1 publication Critical patent/FR2880256A1/en
Application granted granted Critical
Publication of FR2880256B1 publication Critical patent/FR2880256B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
    • 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
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/701—Longitudinal elements with a non-circular, e.g. rectangular, cross-section
    • 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
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7011—Longitudinal element being non-straight, e.g. curved, angled or branched
    • 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
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
    • A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
    • 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8085—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with pliable or malleable elements or having a mesh-like structure, e.g. small strips

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

The system has two pedicle screws (1) connected by a diffraction/compression bar (2). The bar has a thickness lower than width, and is selected based on elastic characteristics of metal used for the bar and an average distance separating the screws to allow an elastic flexion in posteroanterior and anteroposterior direction. The bar has longitudinal ridges and hollow cavities cooperating respectively with ridges and pins of the screws.

Description

La présente invention -a pour objet un système d'ostéosynthèse vertébraleThe present invention relates to a vertebral osteosynthesis system

destiné à l'immobilisation l'une par rapport à l'autre d'au moins deux vertèbres adjacentes.  intended for the immobilization relative to one another of at least two adjacent vertebrae.

Une ostéosynthèse vertébrale consiste à immobiliser l'une par rapport à l'autre au moins deux vertèbres adjacentes en sorte de corriger le positionnement d'au moins une vertèbre. Ce résultat est obtenu au travers d'éléments de distraction ou de compression qui relient lesdites vertèbres par l'intermédiaire d'implants tels que des vis pédiculaires. Ces éléments de distraction ou de compression peuvent consister en une barre reliée aux implants au travers de moyens supports, ou bien en une plaque percée de trous pour le passage des implants.  A vertebral osteosynthesis consists in immobilizing with respect to one another at least two adjacent vertebrae so as to correct the positioning of at least one vertebra. This result is achieved through distraction or compression elements that connect said vertebrae via implants such as pedicle screws. These distraction or compression elements may consist of a bar connected to the implants through support means, or a plate pierced with holes for the passage of the implants.

Ces systèmes d'ostéosynthèses suppriment toute mobilité des vertèbres entre elles, ce qui présente des inconvénients dans certaines pathologies vertébrales, pour lesquelles s'il faut supprimer la mobilité en flexion latérale et en compression, il faut cependant conserver une mobilité en flexion extension.  These osteosynthesis systems eliminate any vertebral mobility between them, which has drawbacks in certain vertebral pathologies, for which it is necessary to suppress mobility in lateral flexion and in compression, it is however necessary to maintain mobility in flexion extension.

La présente invention a pour but de remédier à cet inconvénient, en proposant un système d'ostéosynthèse vertébrale destiné à l'immobilisation l'une par rapport à l'autre d'au moins deux vertèbres adjacentes, permettant d'obtenir une stabilisation dynamique.  The present invention aims to overcome this disadvantage, by proposing a vertebral osteosynthesis system for the immobilization relative to each other of at least two adjacent vertebrae, to obtain a dynamic stabilization.

Le système d'ostéosynthèse vertébrale selon l'invention est du type comprenant des implants, tels que des vis pédiculaires comprenant une partie distale filetée et une partie proximale d'accouplement, reliés par des éléments de distraction ou de compression consistant en des barres ou des plaques, et il se caractérise essentiellement en ce que lesdits éléments de distraction consistent chacun en une barre qui présente un rayon de cambrure dans le sens postéro-antérieur, et qui est d'une épaisseur inférieure à la largeur et choisie en fonction des caractéristiques d'élasticité du métal employé et de l'écart moyen prévu entre deux implants adjacents, en sorte d'autoriser une flexion élastique dans le sens postéro-antérieur et antéro- postérieur.  The vertebral osteosynthesis system according to the invention is of the type comprising implants, such as pedicle screws comprising a threaded distal portion and a proximal coupling portion, connected by distraction or compression elements consisting of bars or rods. plates, and it is essentially characterized in that said distraction elements each consist of a bar which has a radius of camber in the postero-anterior direction, and which is of a thickness less than the width and chosen according to the characteristics of elasticity of the metal used and the expected average deviation between two adjacent implants, so as to allow elastic flexion in the postero-anterior and anteroposterior direction.

Selon une caractéristique additionnelle du système d'ostéosynthèse vertébrale selon l'invention la partie proximale d'accouplement présente la forme d'un étrier, dont l'évidement est destiné à recevoir la barre par un abord latéral, tandis qu'une vis est apte à traverser supérieurement ladite partie proximale pour s'étendre dans ledit évidement et venir serrer la ladite barre par sa face postérieure concave.  According to an additional characteristic of the vertebral osteosynthesis system according to the invention, the proximal coupling part has the shape of a stirrup, the recess of which is intended to receive the bar by a lateral approach, while a screw is suitable. to cross above said proximal portion to extend into said recess and tighten the said bar by its concave posterior face.

Selon une autre caractéristique additionnelle du système d'ostéosynthèse vertébrale selon l'invention, la partie proximale d'accouplement coopère avec la face antérieure convexe de la barre, au travers d'une surface plane ou sensiblement plane.  According to another additional feature of the vertebral osteosynthesis system according to the invention, the proximal coupling part cooperates with the convex front face of the bar, through a flat or substantially flat surface.

Selon une autre caractéristique additionnelle du système d'ostéosynthèse vertébrale selon l'invention, la barre comporte sur sa face antérieure convexe des rainures longitudinales destinées à coopérer avec des rainures complémentaires que comporte la surface plane ou sensiblement plane de la partie proximale d'accouplement de l'implant, en sorte d'assurer une immobilisation dans le sens transversal.  According to another additional feature of the vertebral osteosynthesis system according to the invention, the bar comprises on its convex front face longitudinal grooves intended to cooperate with complementary grooves that comprises the flat or substantially flat surface of the proximal coupling portion of the implant, so as to ensure immobilization in the transverse direction.

Selon une autre caractéristique additionnelle du système d'ostéosynthèse vertébrale selon l'invention, la partie proximale d'accouplement comporte des moyens d'ancrage destinés à coopérer avec des moyens complémentaires d'indexage que comporte la barre.  According to another additional feature of the vertebral osteosynthesis system according to the invention, the proximal coupling portion comprises anchoring means for cooperating with complementary indexing means that includes the bar.

Selon une autre caractéristique additionnelle du système d'ostéosynthèse vertébrale selon l'invention, la barre comporte sur sa face postérieure concave une série d'empreintes creuses alignées longitudinalement dont l'une est destinée à coopérer avec un bossage de forme complémentaire que comporte l'extrémité de la vis de serrage.  According to another additional feature of the vertebral osteosynthesis system according to the invention, the bar comprises on its concave posterior face a series of longitudinally aligned hollow impressions, one of which is intended to cooperate with a complementary shaped boss that includes the end of the clamping screw.

Les avantages et les caractéristiques du système d'ostéosynthèse vertébrale selon l'invention, ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente un mode de réalisation non limitatif.  The advantages and characteristics of the vertebral osteosynthesis system according to the invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents a non-limiting embodiment thereof.

Dans le dessin annexé : - la figure 1 représente une vue schématique en élévation d'un système d'ostéosynthèse vertébrale.  In the accompanying drawing: - Figure 1 shows a schematic elevational view of a vertebral osteosynthesis system.

- la figure 2 représente une vue schématique en élévation et en éclaté d'une partie du même système d'ostéosynthèse 5 vertébrale.  FIG. 2 represents a diagrammatic elevational and exploded view of part of the same vertebral osteosynthesis system.

- la figure 3 représente une vue schématique en coupe longitudinale d'une autre partie du même système d'ostéosynthèse vertébrale.  - Figure 3 shows a schematic longitudinal sectional view of another part of the same vertebral osteosynthesis system.

- la figure 4 représente une vue schématique en coupe l0 transversale de la même partie.  FIG. 4 represents a diagrammatic cross-sectional view of the same part.

En référence à la figure 1, on peut voir un système d'ostéosynthèse vertébrale comprenant deux implants pédiculaires 1 associé à une barre 2 de distraction ou de compression, sachant qu'il est possible de prévoir plus de deux implants pédiculaires 1, la barre 2 étant alors dimensionnée en conséquence.  Referring to Figure 1, we can see a vertebral osteosynthesis system comprising two pedicle implants 1 associated with a bar 2 of distraction or compression, knowing that it is possible to provide more than two pedicle implants 1, the bar 2 being sized accordingly.

En référence également à la figure 2, on peut voir que l'implant pédiculaire 1 comprend une partie distale filetée 10 et une partie proximale 11 destinée à permettre l'accouplement à la barre 2.  With reference also to FIG. 2, it can be seen that the pedicle implant 1 comprises a threaded distal portion 10 and a proximal portion 11 intended to allow coupling to the bar 2.

La partie proximale 11 se présente sous la forme d'un étrier dont l'évidement 12 est destiné à l'engagement de la barre 2. La partie supérieure et extrême 1:3 de l'étrier est percée, dans l'axe de la partie distale filetée 10, d'un trou taraudé 14 dans lequel est vissée une vis 15 destinée à venir brider la barre 2 contre la partie inférieure 16 de l'étrier.  The proximal portion 11 is in the form of a stirrup whose recess 12 is intended for the engagement of the bar 2. The upper and the extreme part 1: 3 of the stirrup is pierced, in the axis of the threaded distal portion 10, a threaded hole 14 in which is screwed a screw 15 intended to clamp the bar 2 against the lower part 16 of the stirrup.

En référence maintenant aux figures 3 et 4, on peut voir que la barre 2 consiste en un parallélépipède de section rectangulaire présentant une certaine courbure dans le sens longitudinal, et comporte donc une face concave 20 et une face convexe 21.  Referring now to FIGS. 3 and 4, it can be seen that the bar 2 consists of a parallelepiped of rectangular section having a certain curvature in the longitudinal direction, and therefore comprises a concave face 20 and a convex face 21.

La barre 2 comporte des moyens d'ancrage pour les implants pédiculaires 1, en l'occurrence, la barre 2 représentée, est destinée à être associée à deux implants pédiculaires 1, sachant qu'il est possible de prévoir des barres 2 susceptibles d'être associées à plus de deux implants pédiculaires 1.  The bar 2 comprises anchoring means for the pedicular implants 1, in this case the bar 2 shown, is intended to be associated with two pedicle implants 1, knowing that it is possible to provide bars 2 capable of be associated with more than two pedicle implants 1.

La barre 2 comporte sur sa face convexe 21 des stries longitudinales 22 destinées à coopérer avec des stries 17 de forme complémentaire que comporte la partie inférieure 16 de l'étrier.  The bar 2 has on its convex face 21 longitudinal grooves 22 intended to cooperate with ridges 17 of complementary shape that includes the lower part 16 of the stirrup.

La barre 2 comporte sur sa face concave 20 une succession d'empreintes creuses 23, alignées longitudinalement, chacune en forme de calotte sphérique, ou de portion de calotte sphérique, avec l'une desquelles est destiné à coopérer un pion 18 que comporte à son extrémité la vis 15, et qui est en forme de calotte sphérique et d'un rayon de courbure égal.  The bar 2 has on its concave face 20 a succession of hollow recesses 23, longitudinally aligned, each in the form of a spherical cap, or of spherical cap portion, with one of which is intended to cooperate a pin 18 that comprises its end of the screw 15, and which is shaped spherical cap and an equal radius of curvature.

Après engagement de la barre 2 dans l'évidement 12, les stries 22 sont adaptées aux stries 17, puis la vis 15 est serrée dans le trou taraudé 14 jusqu'à brider la barre 2 contre la partie inférieure 16 de l'étrier, le pion 18 s'indexant dans l'une des empreintes creuses 3.  After engagement of the bar 2 in the recess 12, the ridges 22 are adapted to the grooves 17, then the screw 15 is tightened in the tapped hole 14 until clamping the bar 2 against the lower part 16 of the stirrup, the pion 18 indexing in one of the hollow impressions 3.

La coopération des stries 22 avec les stries 17 interdit tout déplacement de la barre 2 par rapport à l'implant 1 dans le sens transversal de la barre 2, tandis que l'indexage du pion 18 sur une empreinte creuse 23, interdit tout déplacement de la barre 2 par rapport à l'implant 1 dans le sens longitudinal de la barre 2, en sorte que de supprimer la mobilité en flexion latérale et en compression.  The cooperation of the grooves 22 with the ridges 17 prohibits any displacement of the bar 2 relative to the implant 1 in the transverse direction of the bar 2, while the indexing of the pin 18 on a hollow footprint 23, prohibits any movement of the bar 2 relative to the implant 1 in the longitudinal direction of the bar 2, so that suppress mobility in lateral flexion and compression.

Selon l'invention, la barre 2 est dimensionnée, notamment en ce qui concerne son épaisseur, pour lui conférer dans le sens de la courbure, donc dans le sens postéro-antérieur, une certaine flexibilité, afin que les vertèbres conservent une mobilité en flexion extension.  According to the invention, the bar 2 is dimensioned, in particular with regard to its thickness, to give it, in the direction of the curvature, and therefore in the postero-anterior direction, a certain flexibility, so that the vertebrae retain a mobility in flexion. extension.

Bien entendu, la flexibilité obtenue dépend non seulement des dimensions de la barre 2, notamment de son épaisseur, mais également de la nature du métal utilisé et de la distance moyenne séparant deux implants adjacents.  Of course, the flexibility obtained depends not only on the dimensions of the bar 2, in particular on its thickness, but also on the nature of the metal used and the average distance separating two adjacent implants.

On notera que l'architecture de la partie proximale 11 destinée à permettre l'accouplement à la barre 2, permet d'obtenir des flexibilités différentes selon le sens de celle- ci.  Note that the architecture of the proximal portion 11 intended to allow coupling to the bar 2, provides different flexibilities in the direction thereof.

En effet la distance séparant deux points d'appui adjacents ne sont pas les mêmes selon le sens de flexion, pour la face postérieure concave 20 il s'agit de la distance séparant les deux pions 18 de deux vis 15, tandis que pour la face antérieure convexe 21 il s'agit de la distance, plus petite, qui sépare les bords extrêmes en regard des parties 16 des étriers.  Indeed the distance between two adjacent support points are not the same in the direction of bending, for the concave rear face 20 it is the distance between the two pins 18 of two screws 15, while for the face convex front 21 is the distance, smaller, which separates the extreme edges facing the parts 16 stirrups.

En jouant sur la longueur de la surface d'appui de la barre 2 sur la partie 16, on peut faire varier les caractéristiques de la flexibilité désirée, jusqu'à, éventuellement, obtenir un seul sens de flexibilité.  By varying the length of the bearing surface of the bar 2 on the part 16, one can vary the characteristics of the desired flexibility, until possibly obtain a single direction of flexibility.

Le système d'ostéosynthèse vertébrale selon l'invention permet d'obtenir une stabilisation dynamique  The vertebral osteosynthesis system according to the invention makes it possible to obtain a dynamic stabilization

Claims (1)

6 REVENDICATIONS6 claims 1) Système d'ostéosynthèse vertébrale du type comprenant des implants, tels que des vis pédiculaires (1) comprenant une partie distale filetée (10) et une partie proximale d'accouplement (11), reliés par des éléments de distraction ou de compression (2) consistant en des barres ou des plaques, caractérisé en ce que lesdits éléments de distraction (2) consistent chacun en une barre qui présente un rayon de cambrure dans le sens postéro-antérieur, et qui est d'une épaisseur inférieure à la largeur et choisie en fonction des caractéristiques d'élasticité du métal employé et de l'écart moyen prévu entre deux implants adjacents (1), en sorte d'autoriser une flexion élastique dans le sens postéro-antérieur et antéro-postérieur.  1) A vertebral osteosynthesis system of the type comprising implants, such as pedicle screws (1) comprising a threaded distal portion (10) and a proximal coupling portion (11), connected by distraction or compression elements ( 2) consisting of bars or plates, characterized in that said distraction elements (2) each consist of a bar which has a radius of camber in the postero-anterior direction, and which is of a thickness less than the width and selected according to the elasticity characteristics of the metal employed and the expected average deviation between two adjacent implants (1), so as to allow elastic flexion in the postero-anterior and anteroposterior direction. 2) Système d'ostéosynthèse vertébrale selon la revendication 1, caractérisé en ce que la partie proximale d'accouplement (11) présente la forme d'un étrier, dont l'évidement (12) est destiné à recevoir la barre (2) par un abord latéral, tandis qu'une vis (1) est apte à traverser supérieurement ladite partie proximale (11) pour s'étendre dans ledit évidement (12) et venir serrer la ladite barre (2) par sa face postérieure concave (20).  2) vertebral osteosynthesis system according to claim 1, characterized in that the proximal coupling part (11) has the shape of a stirrup, the recess (12) is intended to receive the bar (2) by a lateral approach, while a screw (1) is able to pass through said proximal portion (11) to extend into said recess (12) and tighten said bar (2) by its concave rear surface (20) . 3) Système d'ostéosynthèse vertébrale selon la revendication 1 ou la revendication 2, caractérisé en ce que la partie proximale d'accouplement (11) coopère avec la face antérieure convexe (21) de la barre (2), au travers d'une surface plane ou sensiblement plane.  3) A vertebral osteosynthesis system according to claim 1 or claim 2, characterized in that the proximal coupling portion (11) cooperates with the convex anterior surface (21) of the bar (2), through a flat or substantially flat surface. 4) Système d'ostéosynthèse vertébrale selon la revendication 3, caractérisé en ce que la barre (2) comporte sur sa face antérieure convexe (21) des rainures longitudinales (22) destinées à coopérer avec des rainures complémentaires (17) que comporte la surface plane ou sensiblement plane de la partie proximale d'accouplement (11) de l'implant (1), en sorte d'assurer une immobilisation dans le sens transversal.  4) A vertebral osteosynthesis system according to claim 3, characterized in that the bar (2) has on its convex front face (21) longitudinal grooves (22) intended to cooperate with complementary grooves (17) that the surface comprises. plane or substantially flat of the proximal coupling portion (11) of the implant (1), so as to ensure immobilization in the transverse direction. 5) Système d'ostéosynthèse vertébrale selon la revendication 3 ou la revendication 4, caractérisé en ce que la partie proximale d'accouplement (11) comporte des moyens d'ancrage (18) destinés à coopérer avec des moyens complémentaires d'indexage (23) que comporte la barre (2).  5) A vertebral osteosynthesis system according to claim 3 or claim 4, characterized in that the proximal coupling portion (11) comprises anchoring means (18) for cooperating with complementary indexing means (23). ) that includes the bar (2). 6) Système d'ostéosynthèse vertébrale selon la revendication 5, caractérisé en ce que la barre (2) comporte sur sa face postérieure concave (20) une série d'empreintes creuses 23) alignées longitudinalement dont l'une est destinée à coopérer avec un bossage (18) de forme complémentaire que comporte l'extrémité de la vis de serrage (15) .  6) vertebral osteosynthesis system according to claim 5, characterized in that the bar (2) has on its concave rear surface (20) a series of longitudinally aligned hollow impressions 23) one of which is intended to cooperate with a boss (18) of complementary shape that includes the end of the clamping screw (15). 7) Système d'ostéosynthèse vertébrale selon la revendication 6, caractérisé en ce que le bossage consiste en un pion (18) en forme de calotte sphérique, tandis que chacune des empreintes creuses (23) est, de manière complémentaire, en forme de calotte sphérique, ou de portion de calotte sphérique, de même rayon de courbure.  7) A vertebral osteosynthesis system according to claim 6, characterized in that the boss consists of a pin (18) shaped spherical cap, while each of the hollow impressions (23) is, in a complementary manner, shaped cap spherical, or portion of spherical cap, of the same radius of curvature.
FR0453271A 2004-12-30 2004-12-30 SYSTEM OF VERTEBRAL OSTEOSYNTHESIS Expired - Fee Related FR2880256B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0453271A FR2880256B1 (en) 2004-12-30 2004-12-30 SYSTEM OF VERTEBRAL OSTEOSYNTHESIS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0453271A FR2880256B1 (en) 2004-12-30 2004-12-30 SYSTEM OF VERTEBRAL OSTEOSYNTHESIS

Publications (2)

Publication Number Publication Date
FR2880256A1 true FR2880256A1 (en) 2006-07-07
FR2880256B1 FR2880256B1 (en) 2007-04-06

Family

ID=34952754

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0453271A Expired - Fee Related FR2880256B1 (en) 2004-12-30 2004-12-30 SYSTEM OF VERTEBRAL OSTEOSYNTHESIS

Country Status (1)

Country Link
FR (1) FR2880256B1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080058808A1 (en) 2006-06-14 2008-03-06 Spartek Medical, Inc. Implant system and method to treat degenerative disorders of the spine
US8114134B2 (en) 2007-06-05 2012-02-14 Spartek Medical, Inc. Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine
US8021396B2 (en) 2007-06-05 2011-09-20 Spartek Medical, Inc. Configurable dynamic spinal rod and method for dynamic stabilization of the spine
US8092501B2 (en) 2007-06-05 2012-01-10 Spartek Medical, Inc. Dynamic spinal rod and method for dynamic stabilization of the spine
US8118842B2 (en) 2007-06-05 2012-02-21 Spartek Medical, Inc. Multi-level dynamic stabilization and motion preservation spinal implantation system and method
US8083772B2 (en) 2007-06-05 2011-12-27 Spartek Medical, Inc. Dynamic spinal rod assembly and method for dynamic stabilization of the spine
US8048115B2 (en) 2007-06-05 2011-11-01 Spartek Medical, Inc. Surgical tool and method for implantation of a dynamic bone anchor
US8057514B2 (en) 2007-06-05 2011-11-15 Spartek Medical, Inc. Deflection rod system dimensioned for deflection to a load characteristic for dynamic stabilization and motion preservation spinal implantation system and method
WO2008151091A1 (en) 2007-06-05 2008-12-11 Spartek Medical, Inc. A deflection rod system for a dynamic stabilization and motion preservation spinal implantation system and method
US8114130B2 (en) 2007-06-05 2012-02-14 Spartek Medical, Inc. Deflection rod system for spine implant with end connectors and method
US8333792B2 (en) 2008-02-26 2012-12-18 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post and method for dynamic stabilization of the spine
US8057515B2 (en) 2008-02-26 2011-11-15 Spartek Medical, Inc. Load-sharing anchor having a deflectable post and centering spring and method for dynamic stabilization of the spine
US20100030224A1 (en) 2008-02-26 2010-02-04 Spartek Medical, Inc. Surgical tool and method for connecting a dynamic bone anchor and dynamic vertical rod
US8083775B2 (en) 2008-02-26 2011-12-27 Spartek Medical, Inc. Load-sharing bone anchor having a natural center of rotation and method for dynamic stabilization of the spine
US8211155B2 (en) 2008-02-26 2012-07-03 Spartek Medical, Inc. Load-sharing bone anchor having a durable compliant member and method for dynamic stabilization of the spine
US8016861B2 (en) 2008-02-26 2011-09-13 Spartek Medical, Inc. Versatile polyaxial connector assembly and method for dynamic stabilization of the spine
US8267979B2 (en) 2008-02-26 2012-09-18 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post and axial spring and method for dynamic stabilization of the spine
US8337536B2 (en) 2008-02-26 2012-12-25 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post with a compliant ring and method for stabilization of the spine
US8097024B2 (en) 2008-02-26 2012-01-17 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post and method for stabilization of the spine
US8257397B2 (en) 2009-12-02 2012-09-04 Spartek Medical, Inc. Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod
US20110307015A1 (en) 2010-06-10 2011-12-15 Spartek Medical, Inc. Adaptive spinal rod and methods for stabilization of the spine
US8430916B1 (en) 2012-02-07 2013-04-30 Spartek Medical, Inc. Spinal rod connectors, methods of use, and spinal prosthesis incorporating spinal rod connectors

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1190678A2 (en) * 2000-09-22 2002-03-27 DePuy Acromed, Inc. Lock cap anchor assembly for orthopaedic fixation
FR2815535A1 (en) * 2000-10-23 2002-04-26 Patrice Moreau Pedicular implant has screw with threaded rod on head, two hemispherical washers and nut
EP1234547A1 (en) * 2001-02-17 2002-08-28 Bernd Schäfer Bone screw
WO2002080788A1 (en) * 2001-04-06 2002-10-17 Ldr Medical Spinal osteosynthesis device and preparation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1190678A2 (en) * 2000-09-22 2002-03-27 DePuy Acromed, Inc. Lock cap anchor assembly for orthopaedic fixation
FR2815535A1 (en) * 2000-10-23 2002-04-26 Patrice Moreau Pedicular implant has screw with threaded rod on head, two hemispherical washers and nut
EP1234547A1 (en) * 2001-02-17 2002-08-28 Bernd Schäfer Bone screw
WO2002080788A1 (en) * 2001-04-06 2002-10-17 Ldr Medical Spinal osteosynthesis device and preparation method

Also Published As

Publication number Publication date
FR2880256B1 (en) 2007-04-06

Similar Documents

Publication Publication Date Title
FR2880256A1 (en) Vertebral osteosynthesis system for immobilizing vertebras, has bar with thickness lower than width, and selected based on elastic characteristics of bar metal and average distance separating two pedicle screws to allow elastic flexion
CA1262322A (en) Spinal support device
EP1795136B1 (en) Apparatus for dynamic stabilisation of the spine
CA2133766C (en) Spinal osteosynthesis device
EP1054638B1 (en) Interspinous stabiliser to be fixed to spinous processes of two vertebrae
EP1926444B1 (en) Vertebral fixing system
EP2040632B1 (en) Interspinous stabilization system
FR2781359A1 (en) Osteosynthesis frame for spinal surgery has rod with clamps to hold cross bars with anchor screws
FR2831048A1 (en) Osteosynthesis device for spinal support or correction comprising implant screwed into vertebrae and plate joined to implant without preventing implant screwing rotation
FR2831420A1 (en) APPARATUS FOR HOLDING THE SPIN WITH A PINCH ASSEMBLY
FR2835174A1 (en) CONNECTOR FOR SPINAL OSTEOSYNTHESIS DEVICE, BONE ANCHOR CONNECTOR / DEVICE ASSEMBLY AND SPINAL OSTEOSYNTHESIS DEVICE USING THE SAME
EP0645986A1 (en) Spinal therapy apparatus.
EP1119305A1 (en) Spinal osteosynthesis system with improved stability
WO2003026521A1 (en) Vertebral fixing device
FR2831049A1 (en) Osteosynthesis device comprising implants screwed into two vertebra and plate used to hold and displace the spine
FR2833151A1 (en) BONE ANCHORING IMPLANT WITH POLYAXIAL HEAD
EP2555697A1 (en) Transverse connection system and device for the vertebral column
FR2930719A1 (en) HOOK FOR VERTEBRAL OSTEOSYNTHESIS DEVICE AND DEVICE COMPRISING SAME
EP1278468B1 (en) Transverse connector for spinal osteosynthesis system
FR2863860A1 (en) Bone anchor screw for correcting deformations of vertebral column, has longitudinal rods arranged inside head, in sequenced manner in two columns, and cap placed on head in unclamped state, before introduction of rods in head
FR2905847A1 (en) ELEMENT OF A DEVICE FOR STABILIZING THE RACHIS, AND DEVICE COMPRISING A PAIR OF SUCH ELEMENTS.
FR2930720A1 (en) CONNECTION MEMBER BETWEEN A LONGITUDINAL ELEMENT OF A VERTEBRAL OSTEOSYNTHESIS DEVICE AND A VERTEBRA, A VERTEBRAL OSTEOSYNTHESIS DEVICE COMPRISING SAME AND TOOL FOR ITS POSE
EP3209228A1 (en) Polyaxial vertebral anchoring device for straightening a vertebra
FR2836370A1 (en) Anchoring plate for vertebral column osteosynthesis device comprises threaded rod connecting to one or more rods and has lower face shaped to fit contact zone astride two vertebrae and comprises screw passage holes
FR2890849A1 (en) Vertebral fixing system for e.g. scoliosis treatment, has connection part defining through path for elongated flexible link such that portions of link are engaged with path for defining link part and free ends

Legal Events

Date Code Title Description
PLFP Fee payment

Year of fee payment: 12

PLFP Fee payment

Year of fee payment: 13

ST Notification of lapse

Effective date: 20180831