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FR2872020A1 - SCOLIOTIC AUTOCORRECTION DEVICE REQUIRING MORE INTERVENTIONS AFTER IMPLANTATION - Google Patents

SCOLIOTIC AUTOCORRECTION DEVICE REQUIRING MORE INTERVENTIONS AFTER IMPLANTATION Download PDF

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Publication number
FR2872020A1
FR2872020A1 FR0407138A FR0407138A FR2872020A1 FR 2872020 A1 FR2872020 A1 FR 2872020A1 FR 0407138 A FR0407138 A FR 0407138A FR 0407138 A FR0407138 A FR 0407138A FR 2872020 A1 FR2872020 A1 FR 2872020A1
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Prior art keywords
rods
scoliosis
self
curvature
piece
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Granted
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French (fr)
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FR2872020B1 (en
Inventor
Frederic Fortin
Johann Robin
De Gauzy Jerome Sales
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Individual
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Individual
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Priority to FR0407138A priority Critical patent/FR2872020B1/en
Priority to PCT/FR2005/001624 priority patent/WO2006010844A1/en
Priority to FR0506533A priority patent/FR2872021B3/en
Publication of FR2872020A1 publication Critical patent/FR2872020A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. 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
    • A61B17/7014Longitudinal elements, e.g. rods with means for adjusting the distance between two screws or hooks
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. 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
    • A61B17/7025Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a sliding joint
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7047Clamps comprising opposed elements which grasp one vertebra between them
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7049Connectors, not bearing on the vertebrae, for linking longitudinal elements together
    • A61B17/7052Connectors, not bearing on the vertebrae, for linking longitudinal elements together of variable angle or length
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7062Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/707Devices acting on, or attached to, a transverse process or rib; Tools therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. 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
    • A61B17/7004Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. 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
    • A61B17/7011Longitudinal element being non-straight, e.g. curved, angled or branched
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032Screws or hooks with U-shaped head or back through which longitudinal rods pass

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  • 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)
  • Surgical Instruments (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Prostheses (AREA)

Abstract

1-Dispositif 1 d'autocorrection d'une scoliose (1) constitué des ensembles des moyens (2),(3),(4) et (5) ,le sous-ensemble de moyen 2 étant constituéd'une tige (21) accrochée aux extrémités de la concavité de scoliose par deux fixations ( 22, et 23)d'un ensemble des moyens (3 ) comportant deux tiges ( 31 et 32) accrochées au rachis par d'autres moyens d'accrochage (33 et 34) situés aux extrémités de la corde D de l'arc définie par la courbure. R de la scoliose , les tiges (31 et 32) pouvant librement coulisser au travers d'orifices situés aux extrémités d'une pièce (4 ) qui a la forme d'un U largement ouvert pour permettre un guidage optimal des dites tiges,la pièce (4) étant elle-même composée d'une tige (41) comportant sur son corps des empreintes identiques pouvant recevoir des vis pointeau, permettant d'assurer une liaison entre les sous ensemble (2) et (3) par l'intermédiaire d'une pièce (5) ainsi qu'un réglage minimum à la pose du dispositif (1) elle a de préférence la forme d'un petit pavé monobloc permettant le passage des tiges (21 et 41 )1-Device 1 for self-correction of scoliosis (1) consisting of the sets of means (2), (3), (4) and (5), the sub-assembly of means 2 consisting of a rod (21) attached to the ends of the scoliosis concavity by two fasteners (22, and 23) of a set of means (3) comprising two rods (31 and 32) attached to the spine by other fastening means (33 and 34) located at the ends of the D chord of the arc defined by the curvature. R of scoliosis, the rods (31 and 32) being able to slide freely through orifices located at the ends of a part (4) which has the shape of a U widely open to allow optimal guidance of said rods, the part (4) itself being composed of a rod (41) comprising on its body identical indentations capable of receiving needle screws, making it possible to ensure a connection between the sub-assemblies (2) and (3) via in one piece (5) as well as a minimum adjustment when installing the device (1), it preferably has the shape of a small one-piece block allowing the passage of the rods (21 and 41)

Description

DISPOSITIF D'AUTOCORRECTION SCOLIOTIQUESCOLIOTIC AUTOCORRECTION DEVICE

NE NECESSITANT PLUS D'INTERVENTIONSNEEDING MORE INTERVENTIONS

APRES IMPLANTATIONAFTER IMPLANTATION

--------------------------------------  --------------------------------------

Domaine de l'invention: La présente invention concerne un dispositif d'autocorrection d'une scoliose, qui une fois posé sur le rachis d'un enfant ne nécessite plus d'interventions.  Field of the Invention: The present invention relates to a device for self-correcting a scoliosis, which once placed on the spine of a child no longer requires interventions.

Art Antérieur: La demande de brevet US 5261908 concerne une prothèse intervertébrale extensible qui se fixe sur les côtes du patient et qui permettait ainsi d'empécher la scoliose de s'aggraver, cette invention ne pouvait réduire la scoliose, elle s'adapte à certaines pathologies vertébrales pour lesquelles il est difficile voire:impossible de se fixer sur les vertèbres, les moyens utilisés ainsi que le problème à résoudre sont différents Le brevet Fortin intitulé :Dispositif de distraction pour les os d'enfant possédant des moyens d'accrochage et de réglage permettant de suivre leur croissance déposé en France sous le N 9907034 ne résout pas non plus les mêmes problèmes, ce dispositif s'accroche aussi plutôt sur les côtes et nécessitent des interventions pour suivre la croissance du rachis La présente invention résout le problème de correction des scolioses sans fusion et sans autre intervention que l'implantation du présent dispositif.  Prior Art: US Patent Application No. 5,261,908 relates to an expandable intervertebral prosthesis which is fixed on the patient's ribs and which thus makes it possible to prevent scoliosis from worsening, this invention could not reduce scoliosis, it adapts to certain vertebral pathologies for which it is difficult even impossible to fix on the vertebrae, the means used and the problem to be solved are different The Fortin patent entitled: distraction device for the bones of child having attachment means and adjustment to monitor their growth deposited in France under the N 9907034 does not solve the same problems either, this device also clings to the ribs and require interventions to monitor the growth of the spine The present invention solves the problem of correction scoliosis without fusion and without any intervention other than the implantation of the present device.

De plus les moyens mis en place pour obtenir les effets recherchés, sont différents de ceux que l'on trouve dans les deux brevets précités de l'art antérieur La présente invention, grâce aux nouveaux moyens mis en oeuvre va corriger les scolioses au plus jeune age, sans réintervention de l'opérateur, de plus sa conception lui confert une mise en place aisée dans un minimum d'encombrement.  In addition, the means used to obtain the desired effects are different from those found in the two aforementioned patents of the prior art. The present invention, thanks to the new means used, will correct the scoliosis to the youngest age, without re-intervention of the operator, moreover its design confers him an easy installation in a minimum of congestion.

Les dessins servant à la compréhension de l'invention sont: Fig1 planche 1/5 vue d'ensemble du dispositif assemblé sans anneaux Fig2 planche 1/5 vue d'ensemble du dispositif assemblé 5 avec anneaux anti-retour Fig 3 planche 2/5 vue d'ensemble du dispositif posé sur un rachis Fig 4 planche 3/5 vue d'une pièce de liaison reliant les deux 10 sous ensembles essentiels du dispositif Fig 5 planche 3/5 pièce de liaison vue dans le plan sagittal avec des tiges cintrées Fig 6 planche 3/5 vue en perpective d' un connecteur de liaison avec ses orifices de coulissage et préhension Figures 7a 8a,9a planche 4/5 Trois schémas montrant la Dynamique de redressement.  The drawings used for understanding the invention are: Fig1 board 1/5 overview of the assembled device without rings Fig2 board 1/5 overview of the assembled device 5 with non-return rings Fig 3 board 2/5 overview of the device placed on a spine Fig 4 plate 3/5 view of a connecting piece connecting the two 10 essential subsets of the device Fig 5 plate 3/5 connecting piece view in the sagittal plane with arched rods Fig. 6 plate 3/5 perspective view of a connecting connector with its sliding and gripping apertures Figures 7a 8a, 9a plate 4/5 Three diagrams showing Rectification Dynamics.

Figures 7b 8b, 9b planche 5/5 Evolution des paramètres géométriques correspondant au figures précédentes de la planche 4/5 (Dynamique de redressement) Le dispositif 1 d'autocorrection est constitué d'un ensemble de moyens 2,3,4 et 5 (fig 1) formés de sous-ensembles dont les moyens se combinent fonctionnellement pour réduire la scoliose.  Figures 7b 8b, 9b plate 5/5 Evolution of the geometrical parameters corresponding to the preceding figures of plate 4/5 (Dynamic of recovery) The device 1 of autocorrection consists of a set of means 2,3,4 and 5 ( Fig 1) formed subsets whose means functionally combine to reduce scoliosis.

Il s'adapte à toutes les déformations lors de sa pose Il corrige les scolioses par la croissance de l'enfant, il est constitué de moyens extrêmement simples compatibles avec l'environnement du corps humain et résistants.  It adapts to all the deformities during its installation It corrects the scoliosis by the growth of the child, it is constituted of extremely simple means compatible with the environment of the human body and resistant.

La définition d'autocorrection du dispositif vient du fait que 30 l'on utilise la croissance de l'enfant pour réduire la scoliose.  The self-correcting definition of the device is that the growth of the child is used to reduce scoliosis.

Nous allons décrire maintenant chacun des sous-ensembles de moyens en expliquant leur fonctionnalité . Le sous-ensemble de moyen 2 est constitué d'une tige 21 de deux moyens de fixations 22, et 23 de la tige 21 sur le rachis (crochets ou vis), ces moyens d'accrochages étant fixés au sommet de la concavité de la courbure à corriger L'ensemble des moyens 3 comporte deux tiges 31 et 32 accrochées au rachis par des moyens 33 et 34 aux extrémités de la corde D de l'arc définie par la courbure. Ces tiges 31 et 32 peuvent librement coulisser au travers des orifices 43 (a et b) et 44(a et b) situés aux extrémités d'une pièce 4 qui a de préférence la forme d'un U largement ouvert pour permettre un guidage optimal. Cette pièce 4 pourrait être également de forme parallélépipèdique comme par exemple un petit pavé, avec des orifices 43(a et b) et 44 (a et b) La pièce 4 est composée d'une tige 41 comportant sur son corps des empreintes identiques 42a.b, c.;.. qui peuvent recevoir des vis pointeau, permettant d'assurer une liaison entre le sous sous- ensemble 2 et le sous-ensemble 3 ceci par l'intermédiaire d'une pièce 5.  We will now describe each subset of means explaining their functionality. The sub-assembly of means 2 consists of a rod 21 of two fixing means 22, and 23 of the rod 21 on the spine (hooks or screws), these clipping means being fixed at the top of the concavity of the Bending to correct The set of means 3 comprises two rods 31 and 32 attached to the spine by means 33 and 34 at the ends of the rope D of the arc defined by the curvature. These rods 31 and 32 can freely slide through the orifices 43 (a and b) and 44 (a and b) located at the ends of a part 4 which preferably has the shape of a U open to allow optimal guiding . This piece 4 could also be of parallelepipedal shape such as for example a small block, with orifices 43 (a and b) and 44 (a and b). Part 4 is composed of a rod 41 having on its body identical imprints 42a. .b, c.; .. which can receive needle screws, to ensure a connection between the subassembly 2 and the subassembly 3 this via a part 5.

La pièce 5 appelée encore sous-ensemble 5 est de préférence une petit bloc ( fig 6) de forme adaptée, elle peut être également un crochet qui comprend: deux perçages 51 et 52 permettant le passage de manière perpendiculaire des tiges 21 et 41 Elles comportent également deux moyens tels que encoches perçages 53 et 54 pour la préhension avec un outil chirurgical.  The part 5 still called subassembly 5 is preferably a small block (FIG. 6) of suitable shape, it can also be a hook which comprises: two bores 51 and 52 allowing the passage of rods 21 and 41 perpendicularly. also two means such as notches 53 and 54 holes for gripping with a surgical tool.

Elle possède aussi un taraudage 55 permettant de recevoir une vis pointeau qui viendra se placer dans une des encoches coniques 42 (a, b, c. .) ceci afin d'assurer une liaison rigide entre l'ensemble des moyens 2 et 3 pour augmenter le plus possible au moment de l'implantation le Rayon R de la scoliose en minimisant la distance f entre le maximum de courbure et le milieu de la partie rectiligne de la pièce 4 (distance minimum visée lors de l'implantation du dispositif) L'ensemble du dispositif 1 est raccordable au rachis par le 5 sous-ensemble 3 par des moyens de fixations tels que par exemple: étriers, Crochets ou Vis péduculaires Le dispositif d'autocorrection 1 grâce à la combinaison de l'ensemble des moyens précédemment décrits présente un certain nombre de caractéristiques mécaniques qui assurent l'autocorrection uniquement par la croissance, sachant que certains paramètres géométriques sont fondamentaux: Distance D entre les accrochages par exemples 33 et 34 est extensible, cette distance augmentant en Dl D2 D3 ( figures 7b, 8b, 15 9b) Flèche f entre la courbure et un accrochage 45 situé au milieu de la partie rectiligne de la pièce 4 en forme de U, valeur constante par construction du dispositif 1 Rayon R de courbure de la scoliose valeur qui augmente 20 avec la croissance.  It also has a tapping 55 to receive a needle screw which will be placed in one of the conical notches 42 (a, b, c.) This to ensure a rigid connection between all means 2 and 3 to increase as much as possible at the time of implantation the Ray R of scoliosis by minimizing the distance f between the maximum of curvature and the middle of the rectilinear part of the part 4 (minimum distance targeted during the implantation of the device) The entire device 1 is connectable to the spine by the subassembly 3 by fastening means such as for example: stirrups, hooks or peducular screws. The self-correction device 1 thanks to the combination of all the means previously described. a certain number of mechanical characteristics which ensure the self-correction only by the growth, knowing that certain geometrical parameters are fundamental: Distance D between the clashes by examples 33 and 34 is e xtensible, this distance increasing in Dl D2 D3 (Figures 7b, 8b, 9b) Arrow f between the curvature and a catch 45 located in the middle of the straight portion of the U-shaped piece 4, constant value by construction of the device 1 R radius of curvature of scoliosis value that increases with 20 growth.

Sous l'action de la croissance de l'enfant D augmente ( en Dl, D2, D3) du fait que les tiges 31 et 32 sont accrochées au vertèbres ou aux côtes et que cesdites tiges 31 et 32 peuvent librement coulisser dans la pièce 4.  Under the action of the growth of the child D increases (in D1, D2, D3) because the rods 31 and 32 are attached to the vertebrae or the ribs and that said rods 31 and 32 can freely slide in the room 4 .

La croissance de l'enfant entraîne, du fait de la constance de f, une augmentation du rayon de courbure R de la scoliose, c'est à dire un redressement qui tend à transformer la courbure de la scoliose en ligne droite, ceci grâce au caractéristiques mécaniques choisies à la construction de ce dispositif d'autocorrection, qui n'a besoin d'aucune intervention, si ce n'est un suivi par imagerie médicale.  The growth of the child leads, because of the constancy of f, an increase in the radius of curvature R scoliosis, ie a recovery that tends to transform the curvature of scoliosis in a straight line, this thanks to mechanical characteristics chosen for the construction of this self-correction device, which needs no intervention, if not a follow-up by medical imaging.

D'autres caractéristiques essentielles de l'invention sont les suivantes: Les tiges 31 et 32 coulissent dans les orifices (43 a et b) et (44a et b) avec un jeu compris entre 0,05 et 0,1 mm pour permettre 5 un bon coulissement même pour des tiges cintrées tout en conservant une bonne rigidité au dispositif 1 Le matériau de fabrication utilisé a une bonne ductilité avec une élasticité adaptée aux efforts subis qui sont discontinus et non 10 linéaires, il doit autoriser sans rupture le cintrage des tiges 31 et 32 il doit bien entendu être biocompatible La pièce 4 accepte de recevoir des tiges coulissantes légèrement cintrées grâce aux précédente caractéristique du ou des matériau choisi, les états de surfaces et les jeux sont déterminées 15 avec précision, par ailleurs aucun profil saillant n'est accepté , pour que le dispositif 1 évite de blesser les tissus environnants.  Other essential features of the invention are as follows: The rods 31 and 32 slide in the orifices (43a and b) and (44a and b) with a clearance of between 0.05 and 0.1 mm to allow 5 good sliding even for curved rods while retaining good rigidity to the device 1 The manufacturing material used has good ductility with elasticity adapted to the forces exerted which are discontinuous and nonlinear, it must allow without breaking the bending of the rods 31 and 32 it must of course be biocompatible The part 4 accepts to receive slightly curved sliding rods thanks to the previous characteristic of the selected material or materials, the surface conditions and the games are determined with precision, moreover no salient profile n ' is accepted, so that the device 1 avoids hurting the surrounding tissue.

Sur chacune des tiges 31 et 32 peuvent être implantés ou non suivant les pathologies des anneaux "anti-retour" 310 et 320 situés du coté de la fixation de la tige 31 ou 32 et en appui sur l'une des 20 face extérieure de l'extrémité en U de la pièce 4 ( figure 2) Leur fonction est de maintenir une tension suffisante entre les fixations aux rachis 33 et 34 situées à chaque extrémité des tiges 31 et 32, en augmentant la distance D, évitant ainsi un retour à l'état initial, avant que l'effet de croissance ne prenne le relais. 25  On each of the rods 31 and 32 may be implanted or not depending on the pathologies of the "anti-return" rings 310 and 320 located on the side of the fixation of the rod 31 or 32 and bearing on one of the outer face of the U-end of the piece 4 (Figure 2) Their function is to maintain sufficient tension between the fasteners to the spine 33 and 34 located at each end of the rods 31 and 32, increasing the distance D, thus avoiding a return to the initial state, before the growth effect takes over. 25

Claims (2)

REVENDICATIONS 1-Dispositif 1 d'autocorrection d une scoliose (1) caractérisé en ce qu'il est constitué des ensembles des moyens (2),(3),(4) et (5) le sousensemble de moyen 2 étant constitué : -d'une tige (21) accrochée aux extrémités de la concavité de scoliose par deux fixations (22, et 23) -d'un ensemble des moyens (3) comportant deux tiges (31 et 32) accrochées au rachis par d'autres moyens d'accrochage (33 et 34) situés aux extrémités de la corde D de l'arc définie par la courbure R de la scoliose, les tiges (31 et 32) pouvant librement coulisser au travers d'orifices ( 43 a et b) et ( 44 a et b) situés aux extrémités d'une pièce (4) qui a de préférence la forme d'un U largement ouvert pour permettre un guidage optimal des dites tiges, la pièce (4) étant elle-même composée d'une tige (41) comportant sur son corps des empreintes identiques (42 a, b, c..) pouvant recevoir des vis pointeau, asurant une liaison entre les sous ensemble (2) et (3) par l'intermédiaire d'une pièce (5) ainsi qu'un réglage minimum à la pose du dispositif (1), cettedite pièce (5) ayant de préférence la forme d'un petit pavé monobloc assurant la liaison des tiges (21 et 41) qui peuvent cependant coulisser, cette combinaison de moyens fixes et coulissant permettant d'augmenter le Rayon R de courbure de la scoliose par le seul effet de la croissance et ne nécessitant plus d'intervention une fois le dispositif (1) posé.  1-device 1 for self-correction of a scoliosis (1) characterized in that it consists of sets of means (2), (3), (4) and (5) the subset of means 2 consisting of: -d a rod (21) hooked at the ends of the scoliosis concavity by two fasteners (22, and 23) -a set of means (3) having two rods (31 and 32) attached to the spine by other means of latching (33 and 34) located at the ends of the rope D of the arc defined by the curvature R of the scoliosis, the rods (31 and 32) being able to slide freely through orifices (43 a and b) and ( 44 a and b) located at the ends of a piece (4) which preferably has the shape of a U wide open to allow optimal guidance of said rods, the piece (4) being itself composed of a rod (41) having on its body identical impressions (42 a, b, c ..) that can receive needle screws, as a connection between the subassemblies (2) and (3) via a pi this (5) and a minimum setting of the device (1), saiddetiteite (5) preferably having the shape of a small block monobloc ensuring the connection of the rods (21 and 41) which can however slide, this combination of fixed and sliding means for increasing the radius R curvature of scoliosis by the sole effect of growth and no longer requiring intervention once the device (1) posed. 2-Dispositif 1 d'autocorrection d'une scoliose (1) selon la revendication 1 caractérisé en ce que la pièce (5) comprend: deux perçages (51 et 52) permettant le passage de manière perpendiculaire des tiges (21 et 41) deux moyens tels que encoches, perçages (53 et 54) pour la préhension avec un outil chirurgical.  2-Device 1 for self-correction of a scoliosis (1) according to claim 1 characterized in that the part (5) comprises: two bores (51 and 52) for the passage perpendicularly of the rods (21 and 41) two means such as notches, bores (53 and 54) for gripping with a surgical tool. un taraudage ( 55) permettant de recevoir une vis pointeau qui viendra se placer dans une des encoches coniques 42 (a, b, c..) ceci afin d'assurer une liaison rigide entre l'ensemble des moyens (2 et 3) pour augmenter le plus possible au moment de l'implantation le Rayon (R) de la scoliose en minimisant la distance (f) entre le maximum de courbure et l'accrochage (45) situé au point milieu de la partie rectiligne de la pièce (4) 3 -Dispositif (1) d'autocorrection d'une scoliose (1) selon les revendication 1 et 2 caractérisé en ce que ledit dispositif (1) possède les propriétés suivantes: la distance (D) entre les accrochages par exemple (33 et 34) est auto extensible, la flèche (f) entre le sommet de courbure scoliotique et l'accrochage (4.5) situé au milieu de la partie rectiligne de la pièce (4) en forme de U, est constante, ce qui permet au rayon ( R) d' augmenter au fur et à mesure que la distance ( D) croit 4 -Dispositif (1) d'autocorrection d'une scoliose (1) selon les revendication 1, 2 et 3 caractérisé en ce que les tiges (31 et 32) coulissent dans les orifices (43 a et b) et (44a et b) avec un jeu compris entre 0,05 et 0,1 mm pour permettre un bon coulissement même pour des tiges cintrées tout en conservant une bonne rigidité au dispositif (1) -Dispositif (1) d'autocorrection d'une scoliose (1) selon les revendication 1, 2,3 et 4 caractérisé en ce que sur les tiges (31 et 32) peuvent être implantés, des anneaux anti-retour (310 et 320) situés du coté de la fixation de la tige (31 ou 32) et en appui sur l'une des face extérieure de l'extrémité en U de la pièce (4), leur fonction étant de maintenir une tension entre les fixations du rachis (33 et 34) situées à chaque extrémité des tiges (31 ou 32) en augmentant la distance D et en évitant ains un retour à l'état initial avant que l'effet de croissa ne prenne le relais 20 25  a tapping (55) for receiving a needle screw which will be placed in one of the conical notches 42 (a, b, c ..) this to ensure a rigid connection between all the means (2 and 3) for increase as much as possible at the time of implantation the Ray (R) of scoliosis by minimizing the distance (f) between the maximum of curvature and the hooking (45) located at the midpoint of the rectilinear part of the piece (4) 3 -Dispositif (1) of autocorrection a scoliosis (1) according to claims 1 and 2 characterized in that said device (1) has the following properties: distance (D) between clashes for example (33 and 34) is self-expanding, the arrow (f) between the scoliotic curvature apex and the hooking (4.5) in the middle of the rectilinear part of the U-shaped workpiece (4) is constant, which allows the radius (R) increase as the distance (D) increases 4 -Dispositif (1) self-correction of scoliosis (1) according to the claim 1, 2 and 3 characterized in that the rods (31 and 32) slide in the orifices (43 a and b) and (44a and b) with a clearance of between 0.05 and 0.1 mm to allow a good sliding even for curved rods while retaining good rigidity to the device (1) -A device (1) for self-correcting a scoliosis (1) according to claims 1, 2, 3 and 4 characterized in that on the rods ( 31 and 32) can be implanted, anti-return rings (310 and 320) located on the side of the fixing of the rod (31 or 32) and resting on one of the outer face of the U-shaped end of the piece (4), their function being to maintain a tension between the fastenings of the spine (33 and 34) located at each end of the rods (31 or 32) by increasing the distance D and thus avoiding a return to the initial state before that the effect of croissa does not take over 20 25
FR0407138A 2004-06-29 2004-06-29 SCOLIOTIC AUTOCORRECTION DEVICE REQUIRING MORE INTERVENTIONS AFTER IMPLANTATION Expired - Fee Related FR2872020B1 (en)

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FR0407138A FR2872020B1 (en) 2004-06-29 2004-06-29 SCOLIOTIC AUTOCORRECTION DEVICE REQUIRING MORE INTERVENTIONS AFTER IMPLANTATION
PCT/FR2005/001624 WO2006010844A1 (en) 2004-06-29 2005-06-28 Device for self-correction of scoliosis not requiring interventions after implantation
FR0506533A FR2872021B3 (en) 2004-06-29 2005-06-28 IMPROVEMENT TO A SCOLIOTIC AUTOCORRECTION DEVICE REQUIRING MORE INTERVENTIONS AFTER IMPLANTATION

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FR0407138A FR2872020B1 (en) 2004-06-29 2004-06-29 SCOLIOTIC AUTOCORRECTION DEVICE REQUIRING MORE INTERVENTIONS AFTER IMPLANTATION
FR0506533A FR2872021B3 (en) 2004-06-29 2005-06-28 IMPROVEMENT TO A SCOLIOTIC AUTOCORRECTION DEVICE REQUIRING MORE INTERVENTIONS AFTER IMPLANTATION

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FR2872021A1 (en) 2005-12-30
FR2872020B1 (en) 2006-12-15

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