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Device and assembly for intervertebral stabilisation

Info

Publication number
WO2001049192A1
WO2001049192A1 PCT/FR2000/003727 FR0003727W WO2001049192A1 WO 2001049192 A1 WO2001049192 A1 WO 2001049192A1 FR 0003727 W FR0003727 W FR 0003727W WO 2001049192 A1 WO2001049192 A1 WO 2001049192A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
chambers
vertebrae
fluid
device
provided
Prior art date
Application number
PCT/FR2000/003727
Other languages
French (fr)
Inventor
Henry Graf
Original Assignee
Henry Graf
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

Links

Classifications

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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425Intervertebral or spinal discs, e.g. resilient made of articulated components
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    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002Longitudinal elements, e.g. rods
    • A61B17/7019Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
    • A61B17/702Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other having a core or insert, and a sleeve, whereby a screw or hook can move along the core or in the sleeve
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    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
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    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2002/448Joints for the spine, e.g. vertebrae, spinal discs comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
    • A61F2002/4485Joints for the spine, e.g. vertebrae, spinal discs comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants comprising three or more adjacent spinal implants
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2002/48Operating or control means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/005Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063Three-dimensional shapes
    • A61F2230/0065Three-dimensional shapes toroidal, e.g. ring-shaped, doughnut-shaped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063Three-dimensional shapes
    • A61F2230/0071Three-dimensional shapes spherical
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00023Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

The invention concerns a stabilising device (150) designed to link two vertebrae, comprising at least two chambers (156, 158, 186, 188) arranged proximate to said vertebrae, said chambers containing a shock absorbing fluid. Means (192, 194) are provided for providing fluid communication with controlled flow between said two chambers, thereby adequately damping the patient's movements.

Description

DISPOSITIF ET ENSEMBLE INTERVERTEBRAUX DE STABILISATION DEVICE AND INTERVERTEBRAL STABILIZATION ASSEMBLY

La présente invention concerne un dispositif et un ensemble intervertébraux de stabilisation. The present invention relates to a device and an intervertebral stabilization assembly.

De manière habituelle, un tel dispositif est destiné à remplacer tout ,ou partie d'un disque intervertébral, lorsque ce dernier a été détruit par la chirurgie ou la maladie. Usually, such a device is intended to replace all or part of an intervertebral disc, where the latter was destroyed by surgery or disease.

L'invention se propose de réaliser un dispositif de stabilisation qui assure un mouvement relatif entre les deux vertèbres qu'il relie, suffisamment proche du mouvement autorisé par un disque vertébral naturel, pour que n'apparaisse pas de dysfonctionnement majeur au niveau de l'ensemble de la chaîne vertébrale. The invention proposes to provide a stabilizing device which provides relative movement between the two vertebrae it connects, close enough to the movement allowed by a natural intervertebral disc, that does not appear major dysfunction at the entire vertebral chain. A cet effet, elle a pour objet un dispositif de stabilisation intervertébral, destiné à relier deux- vertèbres, caractérisé en ce qu'il comprend : For this purpose, it relates to an intervertebral stabilization device for connecting two-vertebrae, characterized in that it comprises:

- au moins deux chambres destinées à être placées au voisinage desdites vertèbres, lesdites chambres renfermant un fluide, et - at least two chambers to be placed in the vicinity of said vertebrae, said chambers containing a fluid, and

- des moyens de mise en communication fluidique desdites chambres avec un débit de fluide contrôlé. - means of fluid communication formatting said chambers with a controlled fluid flow rate.

L'invention a également pour objet un ensemble de stabilisation intervertébral comprenant au moins deux dispositifs de stabilisation intervertébraux tels que définis ci-dessus, au moins des premier et second dispositifs étant disposés de part et d'autre de l'axe principal de la chaîne vertébrale . The invention also relates to a set of spinal stabilization comprising at least two stabilization devices intervertebral as defined above, at least first and second devices being arranged on either side of the principal axis of the chain spinal.

L'invention va être décrite ci-dessous, en référence aux dessins annexés, donnés uniquement à titre d'exemples non limitatifs et dans lesquels : The invention will be described below with reference to the accompanying drawings, given solely by way of non-limiting example and in which:

- la figure 1 est une vue schématique de côté, illustrant deux vertèbres voisines entre lesquelles sont destinés à être placés différents dispositifs de stabilisation conformes à l'invention ; - Figure 1 is a schematic side view illustrating two adjacent vertebrae between which are intended to be placed different stabilization devices according to the invention;

- la figure 2 est une vue de côté, à plus grande échelle, illustrant un premier mode de réalisation d'un dispositif de stabilisation conforme à l'invention ; - Figure 2 is a side view, on a larger scale, illustrating a first embodiment of a stabilization device according to the invention; - la figure 3 est une vue analogue à la figure 2, illustrant une variante du dispositif de stabilisation décrit sur cette figure 2 ; - Figure 3 is a view similar to Figure 2 showing a variant of the stabilization device described in FIG 2;

- la figure 4 est une vue schématique de côté, illustrant un deuxième mode de réalisation d'un dispositif de stabilisation conforme à l'invention ; - Figure 4 is a schematic side view illustrating a second embodiment of a stabilization device according to the invention;

- leX figures 5 à 8 sont des vues analogues à la figure 4, illustrant des variantes du dispositif de stabilisation décrit sur cette figure 4 ; - Lex Figures 5 to 8 are views similar to Figure 4, illustrating variants of the stabilizing device shown in this Figure 4; - la figure 9 illustre une variante de réalisation d'une chambre appartenant à un dispositif de stabilisation selon l'invention ; - Figure 9 illustrates an alternative embodiment of a room belonging to a stabilizing device according to the invention;

- les figures 10 et 11 sont des vues de dessus, illustrant deux dispositifs de stabilisation conformes à un troisième mode de réalisation de l'invention ; - Figures 10 and 11 are top views, illustrating two stabilizing devices in accordance with a third embodiment of the invention;

- la figure 12 est une vue de côté illustrant un dispositif de stabilisation intervertébral conforme à un quatrième mode de réalisation de l'invention ; - Figure 12 is a side view illustrating an intervertebral stabilization device according to a fourth embodiment of the invention; et and

- la figure 13 est une vue de dessus, illustrant un ensemble de stabilisation intervertébral conforme à l'invention. - Figure 13 is a top view illustrating an intervertebral stabilization assembly according to the invention.

La figure 1 représente deux vertèbres respectivement supérieure 2 et inférieure 2', destinées à être reliées par l'intermédiaire de différents types de dispositifs de stabilisation conformes à l'invention, qui seront décrits dans ce qui suit. 1 shows two respectively upper and lower vertebrae 2 2 ', intended to be connected via various types of stabilizing devices in accordance with the invention, which will be described in what follows. Chaque vertèbre comprend un corps vertébral 4, 4' prolongé par un pédicule 6, 6', une articulaire supérieure 8, 8' et une articulaire inférieure 10, 10'. Each vertebra comprises a vertebral body 4, 4 'extended by a pedicle 6, 6', an upper joint 8, 8 'and a lower joint 10, 10'. On désigne par 12 l'espace intervertébral, par 14, 14' les facettes articu- laires en regard, et par 16 et 16' les capsules articulaires. Designates the intervertebral space 12, by 14, 14 'opposite the facet joints, and by 16 and 16' joint capsules. On a également représenté, sur cette figure 1, deux vis pédiculaires 18, 18' fixées dans les corps vertébraux 4, 4' correspondants . Also shown in this figure 1, two pedicle screws 18, 18 'fixed in the vertebral bodies 4, 4' correspondents.

La figure 2 représente un dispositif de stabilisation intervertébral conforme à un premier mode de réalisation de l'invention, qui forme un organe extra-discal 20. Ce dernier, qui est disposé à l'arrière de l'espace intervertébral 12, est propre à amortir un déplacement entre les vertèbres 2, 2'. 2 shows an intervertebral stabilization device according to a first embodiment of the invention, which forms an extra-disc member 20. The latter, which is arranged behind the intervertebral space 12, is adapted to damping movement between the vertebrae 2, 2 '. L'organe d'amortissement 20 comprend une cuve cylindrique 22 rigide, réalisée par exemple en métal, matière plastique, ou céramique. The damping member 20 comprises a cylindrical vessel 22 rigid, for example made of metal, plastic, or ceramic. Cette cuve reçoit, dans son volume intérieur, un piston 24 qui est monté rotulant sur la tête 19 de la vis, laquelle vis s.' This tank receives, in its internal volume, a piston 24 which is mounted swiveling on the head 19 of the screw, which screw s. ' étend au travers d'une ouverture 26 ménagée dans la cuve 22. Les parois latérales du piston sont séparées des parois intérieures en regard de la cuve par l'intermédiaire de deux joints toriques 28. Par ailleurs, l'extrémité inférieure de la cuve 22 est solidarisée à la tête 19' de la vis inférieure 18'. extends through an opening 26 formed in the vessel 22. The side walls of the piston are separated from the inner walls next to the vessel via two O-rings 28. Furthermore, the lower end of the vessel 22 is secured to the head 19 'of the lower screw 18'.

Les parois d'extrémité 30 de la cuve 22 définissent, avec les parois d'extrémité en regard du piston 24, deux chambres respectivement supérieure 32A et inférieure 34A. The end walls 30 of the tank 22 define, with the end walls opposite the piston 24, two respectively upper and lower chambers 32A 34A. Ces dernières sont mises en communication par un conduit 36A, s 'étendant selon la direction principale de la cuve 22. Ce conduit, qui est par exemple réalisé en métal ou matière plastique, est raccordé à la cuve 22 par sertissage, vissage ou encliquetage . The latter are brought into communication by a duct 36A, extending along the main direction of the vessel 22. This conduit, which is for example made of metal or plastic, is connected to the tank 22 by crimping, screwing or snap-fitting. La section transversale de ce conduit 36A est sensiblement inférieure à la section transversale de chaque chambre 32A, 34A. The cross section of the pipe 36A is substantially smaller than the cross section of each chamber 32A, 34A. Ce conduit 36A possède par exemple un diamètre de passage inférieur à 2mm, avantageusement compris entre 0,2 et 0 , 9 mm. This conduit 36A has for example a diameter of underpass to 2mm, preferably between 0.2 and 0. 9 mm.

Les parois d'extrémité 30 de la cuve 22 sont en outre pourvues de butées 38, réalisées en un matériau souple tel qu'un polymère. The end walls 30 of the vessel 22 are further provided with stops 38, made of a flexible material such as a polymer. Chaque chambre est remplie d'un fluide d'amortissement. Each chamber is filled with a damping fluid. Ce fluide comprend au moins un liquide, tel que de l'eau ou de l'huile. This fluid comprises at least a liquid, such as water or oil.

Le fonctionnement de cet organe d'amortissement 20 est le suivant. The operation of the damping member 20 is as follows. Lorsque le patient se penche en avant selon la flèche F, ceci a pour effet d'éloigner l'une de l'autre les vertèbres 2, 2' et donc les vis pédiculaires 18, 18' . When the patient leans forward along the arrow F, this has the effect of moving one of the other vertebrae 2, 2 'and thus the pedicle screws 18, 18'. De la sorte, le piston mobile 24, de séparation des chambres, est dirigé vers la paroi supérieure 30 de la cuve 22 et chasse ainsi le fluide hors de la chambre supérieure 32A, en direction de la chambre inférieure 34A. In this way, the mobile piston 24 separating the chambers is directed toward the upper wall 30 of the vessel 22 and thus drives the fluid out of the upper chamber 32A, towards the lower chamber 34A. Cet écoulement, qui se produit par le conduit 36A, est matérialisé par la flèche f . This flow, which occurs by the conduit 36A, is represented by arrow f.

On conçoit que la vitesse de déplacement du fluide à travers le conduit 36A, qui conditionne la vitesse de déplace- ment du piston 24 en direction de la paroi supérieure 30' , est réglable en fonction de la section du conduit, de la longueur de ce dernier et de la viscosité du fluide employé. It is understood that the fluid displacement speed through the leads 36A, which determines the moving speed of the piston 24 towards the top wall 30 'is adjustable according to the section of the conduit, the length of this last and the viscosity of the fluid used. La présence de ce fluide qui doit être chassé de la chambre considérée afin de permettre un mouvement donné du patient, confère une composante d'amortissement satisfaisante à ce mouvement . The presence of the fluid to be expelled from the chamber in question to allow movement of the given patient, provides satisfactory damping component to this movement.

Lors d'un mouvement de grande amplitude du patient, la butée supérieure 38 permet de limiter le mouvement précité, par appui de la paroi en regard du piston 24 contre cette butée 38. Le caractère élastique de cette dernière confère une composante d'amortissement supplémentaire. When a large amplitude movement of the patient, the upper stop 38 limits the movement above, by pressing the wall facing the piston 24 against the stop 38. The elastic nature of the latter provides additional damping component . En variante, on peut prévoir qu'au moins une chambre contienne un corps hydrophile, tel de 1 ' hydrogel . Alternatively, one can provide at least one chamber contains a hydrophilic body, such as 1 hydrogel. Au fur et à mesure de la course du piston, ce dernier appuie sur le corps hydrophile, de manière à libérer progressivement le fluide qui y était contenu. As to measurement of the stroke of the piston, the latter presses the hydrophilic body, so as to gradually release the fluid which was contained therein.

. . A l'inverse, lorsque le patient se penche vers l'arrière selon la flèche F' , le piston 24 est dirigé vers la paroi inférieure 30' de la cuve 22, de sorte que le fluide est chassé de cette chambre 34A par le conduit 36A, selon la flèche f . Conversely, when the patient leans backwards according to the arrow F ', the piston 24 is directed toward the bottom wall 30' of the vessel 22 so that fluid is expelled from the chamber 34A via line 36A, according to arrow f. ' . .

La figure 3 représente une variante de réalisation de l'organe d'amortissement 20 décrit à la figure 2. Dans ce mode de réalisation, il fait appel à un conduit supplémentaire 36B reliant les deux chambres 32B, 34B. 3 shows an alternative embodiment of the damping member 20 described in FIG 2. In this embodiment, it uses an additional 36B duct connecting both chambers 32B, 34B. De plus, chaque conduit 36B, 37 est pourvu d'un clapet antiretour 40, 42 correspondant. In addition, each conduit 36B, 37 is provided with a check valve 40, 42 corresponding. De la sorte, le conduit 36B permet uniquement un transfert de fluide de la chambre supérieure 32B vers la chambre inférieure 34B, selon la flèche f , alors que le conduit 37 assure un mouvement du fluide uniquement depuis la chambre inférieure 34B vers la chambre supérieure 32B, selon la flèche f ' . In this way, the conduit 36B only permits fluid transfer from the upper chamber 32B to the lower chamber 34B, as shown by arrow f, while conduit 37 provides a movement of the fluid only from the lower chamber 34B to the upper chamber 32B , according to arrow f '.

De manière avantageuse, les dimensions transversales du conduit de . Advantageously, the transverse dimensions of the duct. passage 36B, assurant l'écoulement vers la chambre inférieure, sont plus grandes que celles du conduit 37 assurant le passage vers la chambre supérieure 32. Ceci permet de conférer une composante d'amortissement plus importante dans le sens de l'extension intervertébrale. 36B passage, ensuring the flow to the lower chamber are larger than those of the duct 37 ensures the passage to the upper chamber 32. This makes it possible to confer a greater damping component in the direction of the intervertebral extension. En d'autres termes, les mouvements de flexion du patient vers l'avant sont amortis dans une mesure moindre que ceux d'extension vers 1 ' arrière . In other words, the patient's flexion movements forward are damped to a lesser extent than one extension to the rear. La figure 4 illustre un dispositif de stabilisation intervertébral conforme à un second mode de réalisation, qui forme un implant discal 52 destiné à être inséré au moins partiellement entre les corps vertébraux 4, 4' des vertèbres 2, 2' de la figure 1. Cet implant comprend une poche 54, réalisée en un matériau défor able mais substantiellement non extensible. 4 illustrates an intervertebral stabilization device according to a second embodiment, which forms a disc implant 52 to be inserted at least partially between the vertebral bodies 4, 4 'of the vertebrae 2, 2' of Figure 1. This implant comprises a bag 54 made of a DEFOR ble material but substantially unstretchable. Cette poche 54 définit deux chambres respectivement avant 56A et arrière 58A, qui sont reliées par un conduit 60A, ou étranglement, mettant en communication le volume intérieur de ces deux chambres. This pocket 54 defines two chambers respectively front 56A and back 58A, which are connected by a duct 60A or throttle, communicating the internal volume of these two chambers. Ce conduit 60 présente des dimensions transversales sensiblement inférieures à celles des chambres 56A, 58A. This conduit 60 has substantially smaller transverse dimensions than the rooms 56A, 58A.

L'implant 52 comprend également un enrobage formé par deux coquilles 62. Chacune de ces dernières, qui présente une section transversale sensiblement en arc de cercle, est réalisée en un matériau rigide, tel que du titane. The implant 52 also includes a coating formed by two shells 62. Each of the latter, which has a cross section substantially in a circular arc, is made of a rigid material, such as titanium. Ces coquilles 62, qui sont placées de part et d'autre d'un plan médian de la poche 54, sont destinées à entrer en contact avec les corps vertébraux 4, 4' . These shells 62, which are placed on either side of a median plane of the pouch 54 are intended to come into contact with the vertebral bodies 4, 4 '. Elles sont assujetties à la poche 54 par exemple par collage. They are subject to the pouch 54 for example by gluing.

Chaque chambre 56A, 58A est remplie au moyen d'un fluide, analogue à celui contenu dans les chambres 32, 34 précitées. Each chamber 56A, 58A is filled by means of a fluid, similar to that contained in the chambers 32, 34 above. Une fois l'implant 52 mis en place, lorsque le patient se penche vers l'avant selon la flèche F, ceci a pour effet de comprimer la chambre avant 56A et donc de chasser le fluide qui y était initialement contenu, en direction de la chambre arrière 58A. Once the implant 52 in place when the patient leans forward along the arrow F, this has the effect of compressing the front chamber 56A and thus expel the fluid that was initially contained therein, towards the rear chamber 58A. Cet écoulement de fluide, qui s'effectue par le conduit 60, est matérialisé par la flèche f . This fluid flow, which is carried through line 60, is indicated by the arrow f. . .

A l'inverse, lorsque le patient se penche vers l'arrière selon la flèche F', il se produit, selon un phénomène analogue, un écoulement de fluide selon le conduit 60, matérialisé par la flèche f' . Conversely, when the patient leans backwards according to the arrow F ', there is, according to a similar phenomenon, a fluid flow by conduit 60, indicated by the arrow f'. L'intensité de l'amortissement ainsi conférée lors des mouvements de flexion et d'extension du patient, dépend de la section de passage et de la longueur du conduit 60, ainsi que des caractéristiques physicochimiques, en particulier de la viscosité, du fluide admis dans les chambres 56A, 58A. The intensity of the damping thus imparted during flexion and extension of the patient depends on the flow section and the length of the conduit 60, as well as the physicochemical characteristics, especially the viscosity, of the fluid admitted in rooms 56A, 58A. La figure 5 représente une variante de réalisation de l'implant 52 de la figure 4. Dans cette variante, les deux chambres 56B, 5fiB sont reliées, non pas par un conduit, mais par une membrane poreuse 64, constituant une interface entre ces deux chambres. 5 shows an implant of the embodiment 52 of Figure 4. In this variant, the two chambers 56B, 5fiB are connected not via a conduit, but by a porous membrane 64, forming an interface between these two bedrooms. Cette membrane 64, qui peut s'étendre sur toute la section transversale des chambres 56B, 58B, est par exemple réalisée en une matière textile, telle du DACRON, ou en un métal poreux. This membrane 64, which may extend over the entire cross section of the chambers 56B, 58B, for example made of a textile material such as Dacron, or a porous metal. La présence des pores de cette membrane 64 permet de retarder, de façon analogue à l'emploi du conduit 60, le transfert de fluide entre les deux chambres. The presence of the pores of this membrane 64 is used to delay, analogously to the use of conduit 60, the transfer of fluid between the two chambers. La composante d'amortissement ainsi conférée dépend en particulier de la taille et du nombre des pores de la membrane 64. The damping component thus granted depends in particular on the size and number of pores of the membrane 64.

La figure 6 représente une variante supplémentaire de réalisation de l'implant 52 décrit à la' figure 4. Sur cette figure 6, les chambres 56C, 58C sont reliées, non seulement par un premier conduit 65, mais également par un conduit supplémentaire 66, parallèle au conduit 65. Chaque conduit est pourvu d'un clapet anti-retour respectif 68, 70. De la sorte, le conduit 65 permet un transfert de fluide uniquement depuis la chambre avant 56C vers la chambre arrière 58C, alors que le conduit supplémentaire 66 assure un transfert de fluide uniquement dans le sens opposé . 6 shows a further alternative embodiment of the implant 52 described in 'Figure 4. In this Figure 6, the chambers 56C, 58C are connected not only by a first conduit 65, but also by a further conduit 66, parallel to the conduit 65. Each conduit is provided with a respective check valve 68, 70. in this way, the conduit 65 allows fluid transfer only from the front chamber 56C towards the rear chamber 58C, while the additional conduit 66 ensures a fluid transfer only in the opposite direction.

De façon avantageuse, les dimensions transversales du conduit 65 sont supérieures à celles du conduit supplémentaire 66, de sorte que le fluide est plus facilement à même de s'écouler en direction de la chambre arrière 58C, ce qui correspond au mouvement de flexion vers l'avant du patient. Advantageously, the transverse dimensions of the conduit 65 are higher than those of the additional conduit 66, so that the fluid is more readily able to flow in the direction from the rear chamber 58C, which corresponds to the bending movement towards front of the patient. En d'autres termes, ce mouvement de flexion vers l'avant est amorti dans une mesure moindre que le mouvement inverse d'extension vers l'arrière. In other words, bending forward movement is damped to a lesser extent that the reverse movement of rearward extension. Comme le montre cette figure 6, au moins une des chambres appartenant à l'implant, en l'occurrence la chambre avant 56C, contient un volume de gaz 72, qui peut être par exemple de l'air ou bien encore de l'azote. As shown in this FIG 6, at least one of the chambers belonging to the implant, namely the front chamber 56C, contains a volume of gas 72, which may be for example air or even nitrogen . La présence de ce gaz 72 est avantageuse, dans la mesure où elle induit un effet élastique lors de la mise en compression de la chambre 56C. The presence of this gas 72 is advantageous insofar as it induces a resilient effect when the compression of the chamber 56C. En effet, lorsque cette dernière est comprimée, c'est tout d'abord l'air 72 qui en est chassé, de sorte que le mouvement correspondant n'est amorti que dans une très faible mesure. Indeed, when the latter is compressed, it is first of all the air 72 which is driven, so that the corresponding movement is damped to a very small extent.

Une fois li-air chassé, c'est ensuite le fluide initialement contenu dans la chambre qui s'écoule dans le conduit 65, ce qui confère une composante d'amortissement beaucoup plus importante. Once removed li-air is then initially contained fluid in the chamber flowing into the conduit 65, which gives a much larger damping component. De la sorte, lors de mouvements de faibles amplitudes, seul l'air s'écoule au travers du conduit 65, de sorte que ces mouvements ne sont que peu amortis. In this way, during movement from low amplitudes, only air flows through the duct 65, so that these movements are only slightly damped. Ceci n'est pas gênant car, du fait de leur faible amplitude, de tels mouvements ne peuvent porter atteinte à l'intégrité physique du patient. This is not a problem because, due to their low amplitude, such movements can affect the patient's physical integrity. En revanche, lorsque les mouvements précités ont une amplitude plus grande, du fluide s'écoule également par le conduit 65, de sorte que ces mouvements sont amortis dans une mesure beaucoup plus importante. In contrast, when the aforesaid movements have a larger amplitude, the fluid also flows through line 65, so that these movements are damped in a much larger extent.

La figure 7 représente une variante supplémentaire de l'implant 52. Dans cette variante, l'implant 52 est dépourvu de poche, mais possède des parois d'extrémité 74 reliant de façon étanche les coquilles 62. Ces parois 74 sont réalisées en un matériau déformable mais sensiblement non extensible. 7 shows a further variant of the implant 52. In this embodiment, the implant 52 has no pocket, but has end walls 74 tightly connecting the shells 62. These walls 74 are made of a material deformable but substantially unstretchable. Par ailleurs, un tronc de cylindre 76, formant piston, est logé dans le volume intérieur de l'implant 52. Ce tronc de cylindre, dont l'axe principal est transversal par rapport à celui de l'implant 52, forme un système poreux. In addition, a truncated cylinder 76, piston, is housed in the internal volume of the implant 52. This truncated cylinder whose major axis is transverse to that of the implant 52 forms a pore system . Il renferme par exemple un système de labyrinthe comportant de petites cellules reliées entre elles par des pores, ce qui lui permet de capter le fluide, de manière à provoquer un ralentissement de l'écoulement de ce dernier. For example, it contains a labyrinth system having small cells interconnected by pores, allowing it to capture the fluid, so as to cause a slowdown in the flow of the latter.

Le mouvement du piston d'arrière en avant de l'implant 52 est limité, dans deux sens opposés, par des moyens de butée 78. Ce piston 76 définit, avec les parois 74 en regard, deux chambres avant 56D et arrière 58D. The movement of the rear plunger of the implant 52 is limited in two opposite directions by the stop means 78. The piston 76 defines, with the walls 74 facing each other, two front chambers and rear 56D 58D.

Lors de mouvements de flexion ou d'extension du patient, le piston mobile 76, de séparation des chambres, se déplace d'arrière en avant de l'implant 52. Ceci induit une compres- sion de l'une des chambres 56D, 58D, de sorte que du fluide s'en échappe en direction de l'autre chambre, par l'intermédiaire des pores du piston 76. During flexion or extension of the patient, the mobile piston 76 separating the chambers, moves back and forth of the implant 52. This induces a compres- sion of one of the chambers 56D, 58D , so that fluid escapes toward the other chamber, through the pores of the piston 76.

La figure 8 représente une variante de réalisation de la figure 7, dans laquelle le piston 76' est rigide et étanche. 8 shows an alternative embodiment of Figure 7, wherein the piston 76 'is rigid and tight. Ce piston constitue, comme dans le mode de réalisation de la figure 7, un pivot pour les deux coquilles 62, qui peuvent pivoter l'une par rapport à l'autre autour de l'axe principal transversal A de ce pivot. The piston is, as in the embodiment of Figure 7, a pivot for the two shells 62, which are pivotable relative to each other about the transverse main axis A of the pivot. La circulation de fluide entre les chambres 56E et 58E, qui n'est pas permise par le piston 76', est assurée par l'intermédiaire d'au moins un canal 78 ménagé dans une des coquilles rigides 62. The circulation of fluid between the chambers 56E and 58E, which is not permitted by the piston 76 'is provided by means of at least one channel 78 formed in a rigid shell 62.

La figure 9 illustre une variante supplémentaire de l'invention. Figure 9 shows an additional variant of the invention. Il y est montré une chambre 56F, susceptible d'être utilisée dans l'un des implants décrits en référence aux figures précédentes. There is shown a room 56F which can be used in one of the implants described with reference to previous figures. Cette chambre 56F comprend un sac 80, déformable mais non extensible, dont l'extrémité ouverte est fixée, par exemple par sertissage, à un couvercle 82 rigide, qui est monté coulissant dans une cuve 84 à fond fermé. This room 56F comprises a bag 80 which is deformable but non-extensible, whose open end is secured, eg by crimping to a rigid cover 82, which is slidably mounted in a vessel 84 with a closed bottom. Les parois en regard du sac 80 et de la cuve 84 sont séparées par un lubrifiant 86, tel qu'un gel de silicone. The facing walls of the bag 80 and the tank 84 are separated by a lubricant 86, such as a silicone gel.

Un conduit 88 traverse le couvercle 82, de manière à mettre en communication le volume intérieur de. A conduit 88 passes through the cover 82, so as to put in communication the inner volume. la chambre 56F avec l'extérieur. 56F the chamber with the outside. En fonction des conditions de pression s 'exerçant sur la chambre 56F, du fluide s'en échappe ou bien y est admis, de sorte que les bords du couvercle 82 montent ou descendent, à coulissement , le long des parois latérales de la cuve 84. Ce mode de réalisation est avantageux, dans la mesure où il garantit une étanchéité très satisfaisante, étant donné que cette étanchéité est assurée à la fois par les parois deformables du sac et par les parois rigides de la cuve 84. Depending on the conditions of pressure exerted on the chamber 56F, the fluid escapes or is admitted, so that the edges of the cover 82 up or down, slidably along the side walls of the vessel 84 . this embodiment is advantageous, since it ensures a very satisfactory seal, as this seal is provided both by the deformable walls of the bag and the rigid walls of the tank 84.

Comme le montre la figure 9 en lignes pointillées, deux chambres 56F peuvent être reliées par les conduits 88, de manière à former un organe extra-discal, du même type que celui 20 des figures 2 et 3. Ces chambres 56F peuvent également être entourées par des coquilles, analogues à celles 62. Dans ce cas, les conduits 88 s'étendent dans les coquilles et au moins une chambre peut être entourée par un ressort hélicoïdal . As shown in Figure 9 in dashed lines, 56F two chambers can be connected via conduits 88 to form an extra-disc member, of the same type as 20 in Figures 2 and 3. These rooms 56F may also be surrounded by shells, similar to those 62. in this case, the conduits 88 extend into the shells and at least one chamber may be surrounded by a helical spring.

La figure 10 illustre un dispositif de stabilisation intervertébral conforme à un autre mode de réalisation, qui forme un implant discal 102. Ce dernier comprend deux éléments respectivement gauche 104 et droit 106, disposés de part et d'autre de l'axe principal A de la chaîne vertébrale qui, lorsque le patient se trouve en position debout, est un axe vertical passant par le plan médian P s 'étendant d'arrière en avant du patient. 10 illustrates an intervertebral stabilization device according to another embodiment, which forms a disc implant 102. The latter comprises two elements, respectively left 104 and right 106, disposed on either side of the main axis A of spinal chain which, when the patient is in the upright position is a vertical axis passing through the median plane P extending from back to front of the patient.

Chaque élément 104, 106 comprend deux chambres respectivement avant 108, 112 et arrière 110, 114. Les deux chambres avant 108, 112 sont mises en communication par un conduit avant 116, alors que les deux chambres arrière 110, 114 sont reliées par un conduit arrière 118. Les différentes chambres renferment un fluide analogue à un de ceux décrits ci-dessus, de sorte que, en fonction des conditions de pression s 'exerçant sur ces chambres, il s'instaure une communication fluidique entre celles-ci. Each element 104, 106 comprises two chambers respectively before 108, 112 and rear 110, 114. The two front chambers 108, 112 are placed in communication through a conduit 116 back, while the two rear chambers 110, 114 are connected by a conduit rear 118. the different chambers contain a fluid like one of those described above, so that, depending on the conditions of pressure exerted on these chambers, it establishes a fluid communication therebetween. Les chambres d'un même élément sont séparées au moyen de membranes respectives 120, 122 qui peuvent être etanches, ou bien poreuses comme la membrane 64 décrite ci-dessus. Rooms of the same element are separated by respective membranes 120, 122 which can be watertight, or porous membrane such as 64 described above. De la sorte, les deux chambres 108, 110 et 112, 114 d'un élément considéré peuvent être éventuellement mises en communication fluidique. Thus, both chambers 108, 110 and 112, 114 of a current element can be optionally placed in fluid communication.

En variante, la chambre avant droite 108 peut être mise en communication fluidique avec la chambre arrière gauche 114, la chambre avant gauche 112 étant dans ce cas mise en communication fluidique avec la chambre arrière droite 110. Ces relations fluidiques supplémentaires peuvent être réalisées de façon additionnelle aux relations permises par les conduits 116, 118. Alternatively, the right front chamber 108 can be in fluid communication with the rear chamber 114 left, the left front chamber 112 in this case being placed in fluid communication with the rear chamber 110. These additional right fluidic connections can be made so additional relationships permitted by the ducts 116, 118.

La figure 11 représente un implant discal 102' comprenant deux chambres arrière respectivement droite 124 et gauche 126, ainsi qu'une chambre avant 128, s 'étendant sur une partie substantielle de la largeur du disque. 11 shows an intervertebral implant 102 'comprising two rear chambers respectively right 124 and left 126 and a front chamber 128, extending over a substantial part of the width of the disc. Les chambres arrière 124, 126 sont mises en communication fluidique par l'intermédiaire d'un conduit 130. De plus, chacune de ces chambres 124, 126 est mise en communication fluidique avec la chambre avant 126, par l'intermédiaire de conduits respectifs 132, 13'4. The rear chambers 124, 126 are placed in fluid communication via a conduit 130. In addition, each of these chambers 124, 126 is placed in fluid communication with the front chamber 126 through respective conduits 132 , 13'4.

Les implants 102, 102', décrits ci-dessus, induisent une composante supplémentaire d'amortissement, lorsque le patient se penche sur les côtés, étant donné qu'ils font appel à des chambres disposées de part et d'autre de l'axe A. The implants 102, 102 ', described above, induce an additional damping component, when the patient leans on the sides, given that they rely on rooms and disposed on sides of the axis AT.

La figure X 2 représente -un dispositif de stabilisation intervertébral conforme à un mode supplémentaire de réalisation, qui est désigné dans son ensemble par la référence 150. Ce dispositif comprend un implant discal 152, destiné à être inséré au moins partiellement dans l'espace intervertébral 12. Cet implant 152 comprend deux chambres respectivement avant 156 et arrière 158, entourées par deux coquilles 162, analogues à celles 62 décrites ci-dessus. FIG X 2 represents -a intervertebral stabilization device according to a further embodiment which is generally designated by the reference 150. This device comprises a disc implant 152, to be inserted at least partially into the intervertebral space 12. This implant 152 includes two chambers, respectively front 156 and rear 158, surrounded by two shells 162, similar to those described 62 above. Le dispositif 150 comprend également un organe d'amortissement 170, disposé de façon analogue à celui 20 décrit précédemment, à savoir à l'arrière de l'espace intervertébral 12. Cet organe 170 comprend une cuve rigide 172 à l'intérieur de laquelle est disposé un piston 174, qui comprend une tête 176, formant extrémité supérieure, dont les dimensions transversales sont voisines de celles de la cuve. The device 150 also includes a damping member 170 arranged analogously to that 20 described above, namely at the rear of the intervertebral space 12. This member 170 comprises a rigid vessel 172 within which is disposed a piston 174 which includes a head 176, forming upper end whose transverse dimensions are close to those of the vessel. Un joint torique d' étanchéité 178 est monté entre les parois en regard de la tête 176 et de la cuve 172. An O-ring seal 178 is mounted between the opposite walls of the head 176 and the tank 172.

La tête 176 du piston s'étend à partir d'une tige 180 verticale qui traverse, de façon étanche, la paroi inférieure The head 176 of the piston extends from a vertical rod 180 which passes through a sealed way, the bottom wall

182 de la cuve 172, avec interposition d'un joint torique 184. 182 of the vessel 172, with the interposition of an O-ring 184.

L'extrémité inférieure de la tige 180, opposée à la tête 176, est montée à rotule sur la tête 19' de la vis inférieure 18' . The lower end of the rod 180, opposite the head 176, is swivel mounted on the head 19 'of the lower screw 18'.

La tête 176 délimite des chambres respectivement supé- rieure 186 et inférieure 188, de la cuve 172. La chambre supérieure 186 reçoit un ressort 190, travaillant en compression, qui s'étend verticalement entre la paroi supérieure de la cuve et la paroi en regard de la tête 176. L'emploi de ce ressort 190 permet le rappel du piston 174 dans sa position basse, qui correspond à une posture lordosée du patient, physiologiquement avantageuse. The head 176 defines chambers 186, respectively upper and lower 188, of the vessel 172. The upper chamber 186 receives a spring 190 acting in compression, which extends vertically between the upper wall of the tank and the opposite wall of the head 176. the use of the spring 190 allows the return of the piston 174 in its lower position, which corresponds to a lordosée posture of the patient, physiologically advantageous.

La chambre avant 156 de l'implant 152 est mise en communication fluidique avec la chambre supérieure 186 de l'organe 170, par l'intermédiaire d'un conduit 192, alors que la chambre arrière 158 est mise en communication fluidique avec la chambre inférieure 188 par l'intermédiaire d'un conduit supplémentaire 194. De la sorte, lorsque le patient se penche vers l'avant selon la flèche F, du fluide est chassé de la chambre avant 156 en direction de la chambre supérieure 186, ce qui contribue à- faire descendre le piston 174 dans la cuve 172, à l'opposé de la vis supérieure 18. Cette remontée induit un déplacement de fluide, par le conduit 194, de la chambre inférieure 188 vers la chambre arrière 158. Ce mouvement de flexion est donc amorti par ces différents écoulements de fluide. The front chamber 156 of the implant 152 is placed in fluid communication with the upper chamber 186 of the body 170, via a conduit 192, whereas the rear chamber 158 is placed in fluid communication with the lower chamber 188 via an additional conduit 194. in this way, when the patient leans forward according to the arrow F, the fluid is expelled from the front chamber 156 in the direction of the upper chamber 186, which helps a- lower the piston 174 in the tank 172, opposite to the upper screw 18. This rise causes a fluid moving through the conduit 194, the lower chamber 188 to the rear chamber 158. This flexing movement is amortized by the different fluid flows.

L'amplitude de cet amortissement peut être modulée en fonction des caractéristiques du fluide admis dans les différentes chambres et de la section de passage des conduits 192, 194. On conçoit aisément que, lors d'un mouvement d'extension du patient vers l'arrière, il se produit à la fois des écoulements de fluide et un mouvement du piston 174, selon des sens opposés à ceux précités. The magnitude of the damping may be adjusted depending on the characteristics of the fluid admitted into the various rooms and the passage section of the ducts 192, 194 is easy to understand that when a patient's expansion movement towards rear, there is both fluid flow and movement of the piston 174, in opposite directions to those mentioned above. En variante, on peut prévoir d'adjoindre deux conduits supplémentaires, à chacun des conduits 192, 194, les quatres conduits ainsi formés étant pourvus de clapets anti-retour assurant l'écoulement du fluide dans un unique sens. Alternatively, provision may be to add two additional conduits, to each of the conduits 192, 194, the four ducts thus formed are provided with check valves providing fluid flow in a single direction. On peut également prévoir que la membrane 196 séparant les chambres avant 156 et arrière 158 soit poreuse, de manière à permettre un écoulement de fluide entre ces deux chambres. It is also possible that the membrane 196 separating the chambers 156 back and back 158 be porous, so as to allow fluid flow between these two chambers. On peut également prévoir de supprimer cette membrane 196, de manière à former une unique chambre intradiscale, mise en communication avec la chambre inférieure 174 par le conduit 192, l'autre conduit 194 étant alors supprimé. It is also possible to remove the membrane 196, so as to form a single intradiscal chamber being put in communication with the lower chamber 174 through conduit 192, the other conduit 194 then being omitted. On peut également prévoir que la tête 176 du piston 174 soit poreux, comme celui 76 décrit ci-dessus. It is also possible that the head 176 of the piston 174 is porous, such as 76 described above.

On peut également prévoir que les deux chambres supérieure 186 et inférieure 188 soient mises en communication fluidique par un conduit, analogue à celui 36 décrit ci- dessus. It is also possible that the two upper chambers 186 and bottom 188 are placed in fluid communication by a conduit 36 ​​similar to that described above. Ces chambres 186, 188 peuvent être mises en communication par plusieurs conduits s 'étendant dans la paroi de la cuve 172. Ces conduits peuvent être disposés les uns au- dessous des autres, de sorte que la tête 176 du piston, au fur et à mesure de son mouvement, obture successivement les débouchés de ces conduits. These rooms 186, 188 can be put in communication by a plurality of conduits extending in the wall of the vessel 172. These conduits may be arranged one below the other, so that the head 176 of the piston, as and measuring its movement, successively closes the outlets of these pipes. En fin de mouvement, il subsiste donc, dans une chambre considérée, un volume de fluide résiduel qui ne peut être chassé et constitue un volume d'amortissement. At the end of movement, it is thus still in a chamber in a volume of residual fluid which can not be hunted and is a damping volume. La cuve peut comporter une double paroi définissant un_-'logement annulaire de réserve de fluide. The vessel can have a double wall defining a _- annular housing fluid reserve. La cuve peut également être réalisée partiellement en un matériau poreux, tel qu'une céramique. The tank may also be performed partially of a porous material such as a ceramic. L'emploi d'une tige 180 de piston 174 traversant des parois de la cuve 172 est avantageux. The use of a piston 180 of rod 174 through the walls of the bowl 172 is advantageous. En effet, cette tige 180 et donc le piston 174, peuvent être reliés à la vis 18' tout en prévoyant que cette dernière se trouve à l'extérieur de la cuve 172. Ceci est intéressant en termes d' étanchéité, dans la mesure où il est nécessaire de prévoir uniquement un organe d' étanchéité au voisinage de l'ouverture de la cuve, au travers de laquelle s'étend la tige précitée. Indeed, the rod 180 and thus the piston 174, may be connected to the screw 18 'while providing that the latter is located outside the vessel 172. This is advantageous in terms of sealing, insofar as it is necessary to provide only a sealing member adjacent the opening of the tub, through which extends the aforesaid rod.

Prévoir un dispositif de stabilisation intervertébral, comprenant un implant discal et un organe d'amortissement, disposé à l'arrière de l'espace intervertébral, est également avantageux. Provide an intervertebral stabilization device, comprising a disc implant and a damping member disposed on the back of the intervertebral space, is also advantageous. En effet, l'implant intervertébral permet de restaurer la hauteur du disque. Indeed, the intervertebral implant restores disc height. De plus, étant donné que cet implant renferme un fluide, il est apte à conférer aux deux corps vertébraux voisins une certaine liberté de mouvement mutuelles. In addition, since this implant contains a fluid, it is capable of imparting to the neighboring two vertebral bodies a certain freedom of mutual movement. Par ailleurs, l' organe d' amortissement extra-discal permet de réguler les mouvements autorisés par l'implant discal . Moreover, the body of extra-disc damping helps regulate the movements allowed by the disc implant.

Comme le montre la figure 13, le dispositif de stabilisation 150 peut être disposé de façon décalée par rapport à l'axe principal A, à savoir que l'implant 152 et l'organe 170 sont disposés d'un même côté du plan P. Un tel agencement permet de remédier à des effondrements asymétriques de l'espace intervertébral, en vue de derrière. As shown in Figure 13, the stabilization device 150 may be arranged offset from the main axis A, i.e. that the implant 152 and the member 170 are disposed on the same side of the plane P. such an arrangement overcomes asymmetrical collapse of the intervertebral space, in rear view.

On peut associer au dispositif de stabilisation 150, un dispositif supplémentaire 150' , placé de l'autre côté de l'axe A et du plan P, de manière à former un ensemble de stabilisation intervertébral. Can be associated with stabilization device 150, an additional device 150 'placed on the other side of the axis A and the plane P, so as to form a set of intervertebral stabilization. Ce dispositif 150' représenté en traits mixtes, peut être analogue à celui 150, étant entendu qu'il est possible de lui conférer des dimensions différentes, en particulier en ce qui concerne la hauteur de l'implant 152', de façon à compenser un léger effondrement asymétrique du disque, en vue de derrière. This device 150 'shown in phantom, can be similar to 150, it being understood that it is possible to confer different dimensions, in particular as regards the height of the implant 152' so as to compensate for a slight asymmetrical collapse of the disc, seen from behind. L'invention n'est pas limitée aux exemples décrits et représentés. The invention is not limited to the examples described and shown. En effet, on peut prévoir de relier, par l' intermédiaire.- d'un dispositif de stabilisation intervertébral conforme à l'invention, deux vertèbres qui ne sont pas voisines . Indeed, it may be provided to connect, by intermédiaire.- an intervertebral stabilization device according to the invention, two vertebrae which are not neighbors. Les moyens de mise en communication fluidique décrits ci- dessus contrôlent l'écoulement du fluide car ils induisent une limitation du débit de ce fluide, lors de son écoulement entre les chambres ainsi reliées. The fluid communication formatting means described above controls the flow of fluid because they induce a flow restriction of the fluid, as it flows between the thus connected rooms. Ceci peut s'opérer en conférant à ces moyens de mise en communication des dimensions transver- sales réduites, ou bien encore une longueur importante. This can be done by giving those establishing communication means reduced cross- sectional dimensions, or even a substantial length. Ces moyens induisent une restriction, un ralentissement de l'écoulement du fluide et/ou une perte de charge de ce dernier. These means induce a limitation, slowing the flow of fluid and / or a loss of load of the latter. Le débit de fluide entre les chambres est conservé à une valeur inférieure à une valeur limite, ce qui garantit que le passage du fluide d'une première chambre vers une seconde chambre n'est pas trop rapide. Fluid flow between the chambers is kept at a value less than a limit value, which ensures that the passage of fluid from a first chamber to a second chamber is not too fast. Un certain amortissement des mouvements de la colonne du patient est ainsi créé. A depreciation of the movements of the patient's column is created. Prévoir que deux chambres adjacentes sont séparées par un organe mobile, tel qu'un piston, est particulièrement avantageux. Provide that two adjacent chambers are separated by a movable member such as a piston, is particularly advantageous. En effet, ceci permet de réaliser des objets, extradiscaux et/ou intradiscaux, qui sont efficaces, peu encombrants et qui ne sont soumis que dans une faible mesure aux problèmes d' étanchéité . In effect, this allows for objects extradiscaux and / or intradiscal, which are effective, compact and which are subject only to a small extent to sealing problems.

Claims

REVENDICATIONS CLAIMS
1. Dispositif de stabilisation intervertébral (20 ; 52 ; 102 ; 102' ; 150), destiné à relier deux vertèbres (2, 2'), caractérisé en ce qu'il comprend : 1. A device for intervertebral stabilization (20; 52; 102; 102 '; 150) intended to connect two vertebrae (2, 2'), characterized in that it comprises:
- au ^ moins deux chambres (32, 34 ; 56 ; 58 ; 108, 110, 112, 114 ; 124, 126, 128 ; 156, 158, 186, 188) destinées à être placées au voisinage desdites vertèbres, lesdites chambres renfermant un fluide, et - at ^ least two chambers (32, 34; 56; 58; 108, 110, 112, 114; 124, 126, 128; 156, 158, 186, 188) intended to be placed in the vicinity of said vertebrae, said chambers containing a fluid, and
- des moyens (36, 37 ; 60, 66 ; 64 ; 76 ; 116, 118 ; 130, 132, 134 ; 192, 194) de mise en communication fluidique desdites chambres avec un débit de fluide contrôlé. - means (36, 37; 60, 66; 64; 76; 116, 118; 130, 132, 134; 192, 194) in fluid communication setting of said chambers with a controlled fluid flow rate.
2. Dispositif selon la revendication 1, caractérisé en ce que les moyens de mise en communication comprennent au moins un conduit (36, 37 ; 60 , 65 , 66 ; 116, 118 ; 124, 126 ; 192, 194) s 'étendant entre lesdites chambres. 2. Device according to Claim 1, characterized in that the communication means comprise at least one duct (36, 37; 60, 65, 66; 116, 118; 124, 126; 192, 194) extending between said chambers.
3. Dispositif selon la revendication 2, caractérisé en ce qu'un premier conduit (36B ; 65) assure la communication entre lesdites chambres (32B, 34B ; 56C, 58C) dans un premier sens, alors qu'un second conduit (37 ; 66 ) assure cette communication dans un second sens, opposé au premier, les sections de passage desdits-.premier et second conduits étant différentes . 3. Device according to claim 2, characterized in that a first conduit (36B; 65) provides communication between said chambers (32B, 34B; 56C, 58C) in a first direction, while a second conduit (37; 66) ensures this communication in a second direction, opposite the first, the flow sections of said-.First and second ducts being different.
4. Dispositif selon la revendication 1, caractérisé en ce que les moyens de mise en communication fluidique comprennent au moins une membrane poreuse (64) s 'étendant entre lesdites chambres (56B, 58B) . 4. Device according to claim 1, characterized in that the fluid communication means include formatting at least one porous membrane (64) extending between said chambers (56B, 58B).
5. Dispositif selon la revendication 1, caractérisé en ce que les moyens de mise en communication fluidique comprennent au moins un organe poreux (76) . 5. Device according to claim 1, characterized in that the fluid communication means include formatting at least one porous member (76).
6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre au moins un organe de séparation (24 ; 76 ; 76' ; 174) desdites chambres, ledit organe étant mobile par rapport auxdites chambres sous l'effet du fluide. 6. Device according to any one of the preceding claims, characterized in that it further comprises at least one separating member (24; 76; 76 '; 174) of said chambers, said member being movable relative to said chambers under the effect of the fluid.
7. Dispositif selon la revendication 6, caractérisé en ce que ledit organe de séparation mobile (24 ; 174) est solidaire d'une vis pédiculaire (18 ; 18') . 7. Device according to claim 6, characterized in that said mobile separation member (24; 174) is integral with a pedicle screw (18; 18 ').
8. Dispositif selon la revendication 7, caractérisé en ce que ledit organe de séparation mobile est une tête (176) d'un piston (174) , une tige (180) de ce piston étant solidaire de ladite vis pédiculaire (18') . 8. Device according to claim 7, characterized in that said mobile separation member is a head (176) of a piston (174), a rod (180) of the piston being integral with said pedicle screw (18 ').
9. Dispositif selon les revendications 5 et 6 , caractérisé en ce que--'ledit organe de séparation mobile est ledit organe poreux (76) . 9. Device according to Claims 5 and 6, characterized in that - 'said mobile separation member is said porous member (76).
10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une chambre (56A, 10. Device according to any one of the preceding claims, characterized in that at least one chamber (56A,
58A ; 58A; 56B, 58B ; 56B, 58B; 56C, 58C ; 56C, 58C; 56F ; 56F; 156, 158) est pourvue d'une paroi déformable. 156, 158) is provided with a deformable wall.
11. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdites au moins deux chambres (56, 58 ; 108, 110, 112, 114 ; 124, 126) appartiennent à un implant intradiscal (52 ; 102 ; 102') . 11. Device according to any one of the preceding claims, characterized in that said at least two chambers (56, 58; 108, 110, 112, 114; 124, 126) belong to an intradiscal implant (52; 102; 102 ' ).
12. Dispositif selon la revendication 11, caractérisé en ce qu'au moins des première (108, 110 ; 124) et seconde (112, 114 ; 126) chambres sont disposées de part et d'autre de l'axe principal (A) de la chaîne vertébrale et en ce qu'il est prévu des moyens (116, 118 ; 130) de mise en communication fluidique desdites première et seconde chambres . 12. Device according to claim 11, characterized in that at least first (108, 110; 124) and second (112, 114; 126) chambers are disposed on either side of the main axis (A) of the spinal channel and in that there is provided means (116, 118; 130) fluidly communicating said first and second chambers.
13. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que lesdites chambres (32, 34) appartiennent à un organe d'amortissement (20) extradiscal. 13. Device according to any one of claims 1 to 10, characterized in that said chambers (32, 34) belong to a damping member (20) discal.
14. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'il comprend au moins une chambre (156, 158) appartenant à un implant intradiscal (152) et au moins une autre chambre (186, 188) appartenant à un organe d'amortissement (170) extradiscal. 14. Device according to any one of claims 1 to 10, characterized in that it comprises at least one chamber (156, 158) belonging to an intradiscal implant (152) and at least one other chamber (186, 188) belonging a damping member (170) discal.
15. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit fluide d'amortissement comprend un gaz (72) , notamment de l'air ou de l'azote. 15. Device according to any one of the preceding claims, characterized in that said damping fluid comprises a gas (72), especially air or nitrogen.
16. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une chambre (186) est pourvue d'un ressort (190) travaillant en compression. 16. Device according to any one of the preceding claims, characterized in that at least one chamber (186) is provided with a spring (190) working in compression.
17. Ensemble de stabilisation intervertébral comprenant au moins deux dispositifs de stabilisation intervertébraux (150, 150') conformes à l'une quelconque des revendications précédentes, au moins des premier (150) et second (150') dispositifs étant disposés de part et d'autre de l'axe principal (A) de la chaîne vertébrale. 17. An intervertebral stabilization assembly comprising at least two intervertebral stabilizing devices (150, 150 ') according to any one of the preceding claims, at least first (150) and second (150') devices being arranged on both other of the main axis (A) of the spinal channel.
PCT/FR2000/003727 1999-12-29 2000-12-28 Device and assembly for intervertebral stabilisation WO2001049192A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9916662A FR2803188A1 (en) 1999-12-29 1999-12-29 Device and intervertebral stabilization assembly
FR99/16662 1999-12-29

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10168679 US7066957B2 (en) 1999-12-29 2000-12-28 Device and assembly for intervertebral stabilization
EP20000990839 EP1241995A1 (en) 1999-12-29 2000-12-28 Device and assembly for intervertebral stabilisation
CA 2395602 CA2395602C (en) 1999-12-29 2000-12-28 Device and assembly for intervertebral stabilisation
JP2001549561A JP2003518978A (en) 1999-12-29 2000-12-28 Intervertebral stabilization device and assembly

Publications (1)

Publication Number Publication Date
WO2001049192A1 true true WO2001049192A1 (en) 2001-07-12

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PCT/FR2000/003727 WO2001049192A1 (en) 1999-12-29 2000-12-28 Device and assembly for intervertebral stabilisation

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JP (1) JP2003518978A (en)
CA (1) CA2395602C (en)
EP (1) EP1241995A1 (en)
FR (1) FR2803188A1 (en)
WO (1) WO2001049192A1 (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7029475B2 (en) 2003-05-02 2006-04-18 Yale University Spinal stabilization method
US7597694B2 (en) 2004-01-30 2009-10-06 Warsaw Orthopedic, Inc. Instruments and methods for minimally invasive spinal stabilization
US7615068B2 (en) 2003-05-02 2009-11-10 Applied Spine Technologies, Inc. Mounting mechanisms for pedicle screws and related assemblies
US7635379B2 (en) 2003-05-02 2009-12-22 Applied Spine Technologies, Inc. Pedicle screw assembly with bearing surfaces
US7699875B2 (en) 2006-04-17 2010-04-20 Applied Spine Technologies, Inc. Spinal stabilization device with weld cap
US7713287B2 (en) * 2003-05-02 2010-05-11 Applied Spine Technologies, Inc. Dynamic spine stabilizer
US7713288B2 (en) 2005-08-03 2010-05-11 Applied Spine Technologies, Inc. Spring junction and assembly methods for spinal device
US7722647B1 (en) 2005-03-14 2010-05-25 Facet Solutions, Inc. Apparatus and method for posterior vertebral stabilization
US7727258B2 (en) 2000-12-01 2010-06-01 Warsaw Orthopedic, Inc. Intervertebral stabilizing device
US7753937B2 (en) 2003-12-10 2010-07-13 Facet Solutions Inc. Linked bilateral spinal facet implants and methods of use
US7815664B2 (en) 2005-01-04 2010-10-19 Warsaw Orthopedic, Inc. Systems and methods for spinal stabilization with flexible elements
US7815648B2 (en) 2004-06-02 2010-10-19 Facet Solutions, Inc Surgical measurement systems and methods
US7931675B2 (en) 2004-06-23 2011-04-26 Yale University Dynamic stabilization device including overhanging stabilizing member
US7955390B2 (en) 2001-03-02 2011-06-07 GME Delaware 2 LLC Method and apparatus for spine joint replacement
US7993373B2 (en) 2005-02-22 2011-08-09 Hoy Robert W Polyaxial orthopedic fastening apparatus
US8172880B2 (en) 1999-12-01 2012-05-08 Warsaw Orthopedic, Inc. Intervertebral stabilising device
US8206418B2 (en) 2007-01-10 2012-06-26 Gmedelaware 2 Llc System and method for facet joint replacement with detachable coupler
US8313511B2 (en) 2000-11-29 2012-11-20 Gmedelaware 2 Llc Facet joint replacement
US8556936B2 (en) 2000-11-29 2013-10-15 Gmedelaware 2 Llc Facet joint replacement
US8562649B2 (en) 2004-02-17 2013-10-22 Gmedelaware 2 Llc System and method for multiple level facet joint arthroplasty and fusion
US8652175B2 (en) 2003-05-02 2014-02-18 Rachiotek, Llc Surgical implant devices and systems including a sheath member
US8764801B2 (en) 2005-03-28 2014-07-01 Gmedelaware 2 Llc Facet joint implant crosslinking apparatus and method
US8900273B2 (en) 2005-02-22 2014-12-02 Gmedelaware 2 Llc Taper-locking fixation system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7811309B2 (en) 2005-07-26 2010-10-12 Applied Spine Technologies, Inc. Dynamic spine stabilization device with travel-limiting functionality

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648294A (en) * 1969-02-08 1972-03-14 Esfandiar Shahrestani Endoprostheses, especially for hip joints
EP0277282A1 (en) * 1987-01-08 1988-08-10 Gebrüder Sulzer Aktiengesellschaft Joint endoprosthesis
FR2723841A1 (en) * 1994-08-23 1996-03-01 Fabien Gauchet Lumbar vertebral disc prosthesis
EP0820731A2 (en) * 1996-07-22 1998-01-28 Fred Zacouto Skeletal implant
EP0953317A1 (en) * 1998-04-30 1999-11-03 Fred Zacouto Skeletal implant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648294A (en) * 1969-02-08 1972-03-14 Esfandiar Shahrestani Endoprostheses, especially for hip joints
EP0277282A1 (en) * 1987-01-08 1988-08-10 Gebrüder Sulzer Aktiengesellschaft Joint endoprosthesis
FR2723841A1 (en) * 1994-08-23 1996-03-01 Fabien Gauchet Lumbar vertebral disc prosthesis
EP0820731A2 (en) * 1996-07-22 1998-01-28 Fred Zacouto Skeletal implant
EP0953317A1 (en) * 1998-04-30 1999-11-03 Fred Zacouto Skeletal implant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

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US8172880B2 (en) 1999-12-01 2012-05-08 Warsaw Orthopedic, Inc. Intervertebral stabilising device
US8313511B2 (en) 2000-11-29 2012-11-20 Gmedelaware 2 Llc Facet joint replacement
US8556936B2 (en) 2000-11-29 2013-10-15 Gmedelaware 2 Llc Facet joint replacement
US7727258B2 (en) 2000-12-01 2010-06-01 Warsaw Orthopedic, Inc. Intervertebral stabilizing device
US7955390B2 (en) 2001-03-02 2011-06-07 GME Delaware 2 LLC Method and apparatus for spine joint replacement
US7476238B2 (en) * 2003-05-02 2009-01-13 Yale University Dynamic spine stabilizer
US9655651B2 (en) 2003-05-02 2017-05-23 Yale University Dynamic spine stabilizer
US7713287B2 (en) * 2003-05-02 2010-05-11 Applied Spine Technologies, Inc. Dynamic spine stabilizer
US9034016B2 (en) 2003-05-02 2015-05-19 Yale University Dynamic spine stabilizer
US7615068B2 (en) 2003-05-02 2009-11-10 Applied Spine Technologies, Inc. Mounting mechanisms for pedicle screws and related assemblies
US7635379B2 (en) 2003-05-02 2009-12-22 Applied Spine Technologies, Inc. Pedicle screw assembly with bearing surfaces
US8652175B2 (en) 2003-05-02 2014-02-18 Rachiotek, Llc Surgical implant devices and systems including a sheath member
US7029475B2 (en) 2003-05-02 2006-04-18 Yale University Spinal stabilization method
US8419770B2 (en) 2003-12-10 2013-04-16 Gmedelaware 2 Llc Spinal facet implants with mating articulating bearing surface and methods of use
US8926700B2 (en) 2003-12-10 2015-01-06 Gmedelware 2 LLC Spinal facet joint implant
US7753937B2 (en) 2003-12-10 2010-07-13 Facet Solutions Inc. Linked bilateral spinal facet implants and methods of use
US8002804B2 (en) 2004-01-30 2011-08-23 Warsaw Orthopedic, Inc. Instruments and methods for minimally invasive spinal stabilization
US7597694B2 (en) 2004-01-30 2009-10-06 Warsaw Orthopedic, Inc. Instruments and methods for minimally invasive spinal stabilization
US7998178B2 (en) 2004-02-17 2011-08-16 Gmedelaware 2 Llc Linked bilateral spinal facet implants and methods of use
US8579941B2 (en) 2004-02-17 2013-11-12 Alan Chervitz Linked bilateral spinal facet implants and methods of use
US7914560B2 (en) 2004-02-17 2011-03-29 Gmedelaware 2 Llc Spinal facet implant with spherical implant apposition surface and bone bed and methods of use
US8562649B2 (en) 2004-02-17 2013-10-22 Gmedelaware 2 Llc System and method for multiple level facet joint arthroplasty and fusion
US7998177B2 (en) 2004-02-17 2011-08-16 Gmedelaware 2 Llc Linked bilateral spinal facet implants and methods of use
US8906063B2 (en) 2004-02-17 2014-12-09 Gmedelaware 2 Llc Spinal facet joint implant
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US7815648B2 (en) 2004-06-02 2010-10-19 Facet Solutions, Inc Surgical measurement systems and methods
US8500781B2 (en) 2004-06-23 2013-08-06 Yale University Method for stabilizing a spine
US9005252B2 (en) 2004-06-23 2015-04-14 Yale University Method for stabilizing a spine
US7931675B2 (en) 2004-06-23 2011-04-26 Yale University Dynamic stabilization device including overhanging stabilizing member
US9681893B2 (en) 2004-06-23 2017-06-20 Yale University Method for stabilizing a spine
US8414620B2 (en) 2005-01-04 2013-04-09 Warsaw Orthopedic, Inc. Systems and methods for spinal stabilization with flexible elements
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US8888817B2 (en) 2005-01-04 2014-11-18 Warsaw Orthopedic, Inc. Systems and methods for spinal stabilization with flexible elements
US8900273B2 (en) 2005-02-22 2014-12-02 Gmedelaware 2 Llc Taper-locking fixation system
US8062336B2 (en) 2005-02-22 2011-11-22 Gmedelaware 2 Llc Polyaxial orthopedic fastening apparatus with independent locking modes
US7993373B2 (en) 2005-02-22 2011-08-09 Hoy Robert W Polyaxial orthopedic fastening apparatus
US7722647B1 (en) 2005-03-14 2010-05-25 Facet Solutions, Inc. Apparatus and method for posterior vertebral stabilization
US8764801B2 (en) 2005-03-28 2014-07-01 Gmedelaware 2 Llc Facet joint implant crosslinking apparatus and method
US7713288B2 (en) 2005-08-03 2010-05-11 Applied Spine Technologies, Inc. Spring junction and assembly methods for spinal device
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US8252027B2 (en) 2007-01-10 2012-08-28 Gmedelaware 2 Llc System and method for facet joint replacement
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US8333789B2 (en) 2007-01-10 2012-12-18 Gmedelaware 2 Llc Facet joint replacement
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CA2395602A1 (en) 2001-07-12 application
EP1241995A1 (en) 2002-09-25 application
JP2003518978A (en) 2003-06-17 application
FR2803188A1 (en) 2001-07-06 application
CA2395602C (en) 2008-09-23 grant

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