FR2839880A1 - Connecting bar for intervertebral fixator used in spinal correction has duct for heat exchange fluid to actuate shape memory metal - Google Patents
Connecting bar for intervertebral fixator used in spinal correction has duct for heat exchange fluid to actuate shape memory metal Download PDFInfo
- Publication number
- FR2839880A1 FR2839880A1 FR0206153A FR0206153A FR2839880A1 FR 2839880 A1 FR2839880 A1 FR 2839880A1 FR 0206153 A FR0206153 A FR 0206153A FR 0206153 A FR0206153 A FR 0206153A FR 2839880 A1 FR2839880 A1 FR 2839880A1
- Authority
- FR
- France
- Prior art keywords
- connecting rod
- spine
- fluid
- circulation
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8863—Apparatus for shaping or cutting osteosynthesis equipment by medical personnel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/701—Longitudinal elements with a non-circular, e.g. rectangular, cross-section
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
Abstract
Description
La presente invention concerne le domaine technique de l'osteosynthese, auThe present invention relates to the technical field of osteosynthesis, in
sens general et elle vise plus precisement les dispositifs assurant une liaison intervertebrale et adaptee pour corriger les deformations du rachis, en particulier les general sense and it more precisely targets devices ensuring an intervertebral connection and adapted to correct deformations of the spine, in particular
deformations scoliotiques.scoliosis deformities.
Dans l'etat de la technique, il est connu de nombreux dispositifs de liaison intervertebrale. D'une maniere classique, un tel dispositif comporte des elements d'ancrage osseux tels que par exemple des vis d'implantation pediculaire ou des crochets vertebraux, equipes chacun d'une tete de fixation pour une tige de liaison les reliant entre eux. Selon une technique connue, une tige de liaison rigide en inox ou en titane est cintree pour epouser la deformation du rachis dans le plan frontal, telle qu'une scoliose par exemple. Apres deformation, cette tige est ancree a la colonne vertebrale par l'intermediaire des elements d'ancrage osseux tout en restart libre en rotation. Cette tige de liaison intervertebrale est alors pivotee selon l'axe de la colonne vertebrale sur une plage angulaire de 90 aPm de redresser la deformation du rachis dans le plan frontal et de ramener la courbure dans le plan sagittal en formant une courbure possedant une cyphose et une lordose anatomiques. La tige de In the state of the art, numerous intervertebral connecting devices are known. Conventionally, such a device includes bone anchoring elements such as for example pedicle implantation screws or vertebral hooks, each equipped with a fixing head for a connecting rod connecting them together. According to a known technique, a rigid stainless steel or titanium connecting rod is bent to match the deformation of the spine in the frontal plane, such as scoliosis for example. After deformation, this rod is anchored to the spine through the bone anchoring elements while restarting free in rotation. This intervertebral connecting rod is then pivoted along the axis of the spine over an angular range of 90 aPm to straighten the deformation of the spine in the frontal plane and to bring back the curvature in the sagittal plane by forming a curvature having a kyphosis and anatomical lordosis. The rod
liaison est alors bloquee sur chacun des elements d'ancrage osseux. connection is then blocked on each of the bone anchoring elements.
Cette rotation de la tige de liaison sur une plage angulaire de 90 , appelee aussi derotation, constitue une operation relativement delicate a mener a bien dans la mesure ou la prehension de cette tige de liaison est difficile en raison de sa section droite transversale circulaire. Par ailleurs, des efforts tres importants vent necessaires pour assurer la deformation de la colonne vertebrale pendant cette operation de derotation, ce qui est susceptible d'entraner des contraintes mal matrisees au niveau This rotation of the connecting rod over an angular range of 90, also called derotation, constitutes a relatively delicate operation to be carried out to the extent that gripping this connecting rod is difficult because of its circular cross section. In addition, very important efforts are necessary to ensure the deformation of the spine during this derotation operation, which is likely to cause poorly mastered stresses at the level
du rachis.spine.
L ' obj et de [ ' invention vise done a remedier aux inconvenients enonces ci dessus en proposant une tige de liaison intervertebrale permettant de redresser les The object of the invention is therefore to remedy the drawbacks mentioned above by proposing an intervertebral connecting rod making it possible to straighten the
deformations du rachis selon une operation relativement simple a mener a bien. deformities of the spine in a relatively simple operation to carry out.
Un autre objet de ['invention est de proposer une tige de liaison intervertebrale offrant l'avantage de redresser les deformations du rachis tout en influant sur la Another object of the invention is to propose an intervertebral connecting rod offering the advantage of straightening the deformations of the spine while influencing the
vitesse de ces deformations tout au long du processus de redressement. speed of these deformations throughout the recovery process.
Un objet encore de ['invention est de proposer des tiges de redressement permettant toutes de ramener le rachis selon un meme profil de reference anatomique. Pour atteindre de tels objectifs, ['objet de ['invention concerne une tige de l iais on pour redres ser les deformations du rachis real i see en un materiau a memo ire de forme, pourvue d' au moins un canal de circulation pour un fluide calorifique ou Another object of the invention is to propose straightening rods which all allow the spine to be brought back according to the same anatomical reference profile. To achieve such objectives, the object of the invention relates to a rod of iais to straighten the deformations of the spine real i see in a material with shape memoir, provided with at least one circulation channel for a heat fluid or
frigorifique afin de modifier sa temperature et par suite, sa rigidite. to change its temperature and therefore its rigidity.
Un autre objectif de ['invention vise a proposer un dispositif pour redresser les deformations du rachis comportant: - une tige de liaison conforme a ['invention, - un circuit de circulation d'un fluide calorifique ou frigorifique, destine a etre raccorde au canal de circulation de la tige, - des moyens de production d'un fluide calorifique et d'un fluide frigorifique, - et des moyens de contr81e de la circulation du fluide a l'interieur du canal de la tige, adaptes pour permettre dans un premier temps, la circulation d'un fluide frigorifique dans le canal de la tige afin de la rendre malleable et dans un second temps, la circulation du fluide calorifique dans le canal Another objective of the invention aims to propose a device for straightening the deformations of the spine comprising: - a connecting rod in accordance with the invention, - a circuit for circulation of a heat or cooling fluid, intended to be connected to the canal rod circulation, - means for producing a heating fluid and a refrigerating fluid, - and means for controlling the circulation of the fluid inside the rod channel, adapted to allow in a first time, the circulation of a refrigerant in the channel of the rod in order to make it malleable and in a second time, the circulation of the heat fluid in the channel
de la tige afin qu'elle puisse retrouver sa forme de reference. of the rod so that it can regain its reference shape.
Un autre objet de ['invention vise a proposer un procede de realisation d'une tige de liaison pour redresser les deformations du rachis consistent a: - a realiser une tige en un materiau a memoire de forme, - a conferer a cette tige une forme de reference possedant, dans un plan dit sagittal, une courbure correspondent a la courbure anatomique du rachis, et dans un plan perpendiculaire dit frontal, un profil rectiligne, - et a refroidir ladite tige afin qu'elle devienne malleable avant de la Another object of the invention is to propose a method for producing a connecting rod for straightening the deformations of the spine, consisting in: - making a rod in a material with shape memory, - in giving this rod a shape reference having, in a so-called sagittal plane, a curvature correspond to the anatomical curvature of the spine, and in a perpendicular plane called the frontal, a rectilinear profile, - and to cool said rod so that it becomes malleable before
rechauffer afin qu'elle recupere sa forme de reference. reheat so that it recovers its reference shape.
Diverses autres caracteristiques de ['invention ressortent de la description faite Various other characteristics of the invention emerge from the description made
ci-dessous en reference aux dessins annexes qui montrent, a titre d'exemples non below with reference to the accompanying drawings which show, by way of example not
limitatifs, une forme de realisation de ['objet de ['invention. limiting, a form of realization of the object of the invention.
La ilg. 1 est une vue partielle en perspective d'un exemple de realisation d'une The ilg. 1 is a partial perspective view of an exemplary embodiment of a
tige de liaison conforme a ['invention. connecting rod according to the invention.
La fig. 2 est une vue a plus grande echelle, d'une tige de liaison conforme a ['invention. La ffg. 3 est un schema illustrant un dispositif de mise en ccuvre d'une tige de Fig. 2 is a view on a larger scale of a connecting rod according to the invention. The ffg. 3 is a diagram illustrating a device for implementing a rod of
liaison conforme a ['invention.binding in accordance with the invention.
Les fig. 4 et 5 vent des vues schematiques illustrant le principe de mise en Figs. 4 and 5 are schematic views illustrating the principle of implementation
ccuvre de la tige de liaison conforme a ['invention. cover of the connecting rod according to the invention.
Tel que cela ressort plus precisement des fg. 1 et 2, ['objet de ['invention concerne une tige 1 de liaison intervertebrale adaptee pour redresser les deformations du rachis. Conformement a ['invention, cette tige de liaison 1 est realisee en un materiau a memoire de forme. Par exemple, cette tige de liaison 1 est realisee en nickel titane. Cette tige de liaison 1 comporte au moins un canal 2 de circulation pour un fluide calorifique ou frigorifique afin de modifier voire matriser sa temperature et par suite, sa rigidite. Dans l'exemple de realisation illustre par les dessins, la tige de liaison 1 est pourvue d'un canal de circulation 2 traversant de part en part la tige pour As can be seen more precisely from fg. 1 and 2, the object of the invention relates to an intervertebral connecting rod 1 adapted to straighten the deformations of the spine. According to the invention, this connecting rod 1 is made of a material with shape memory. For example, this connecting rod 1 is made of titanium nickel. This connecting rod 1 has at least one circulation channel 2 for a heat or cooling fluid in order to modify or even control its temperature and consequently, its rigidity. In the embodiment illustrated by the drawings, the connecting rod 1 is provided with a circulation channel 2 passing right through the rod to
deboucher a chacune de ses extremites. lead to each of its ends.
Selon une forme preferee de realisation, la tige de liaison 1 possede une section droite transversale non circulaire. Par exemple, la tige de liaison 1 possede une section droite transversale polygonale dont les segments de droite definissent des facettes 3 reliees par exemple entre elles par des conges de raccordement 4. Dans ltexemple de realisation illustre sur la fig. 1, la tige de liaison 1 possede une section According to a preferred embodiment, the connecting rod 1 has a non-circular cross section. For example, the connecting rod 1 has a polygonal cross section, the straight segments of which define facets 3 connected, for example, to each other by connection fillets 4. In the exemplary embodiment illustrated in FIG. 1, the connecting rod 1 has a section
droite transversale carree et presente ainsi quatre facettes 3. square transverse line and thus presents four facets 3.
Selon une autre caracteristique preferee de real isati on, la tige de liaison 1 possede une forme de reference presentant comme illustre sur les fig. 1 et 2, dans un plan dit sagittal S. une courbure correspondent a la courbure anatomique du rachis et dans un plan perpendiculaire dit frontal F. un profil rectiligne. La courbure anatomique, dans le plan sagittal S de cette forme de reference correspond ainsi a une cyphose et a une lordose anatomiques. En d'autres termes, la tige de liaison 1 est realisee de maniere a presenter cette forme de reference en sortie de l'etape de fabrication. Selon une autre caracteristique preferee de realisation, la tige de liaison 1 est pourvue de moyens 7 pour reperer sa forme de reference de maniere que cette tige de liaison 1 puisse etre positionnee correctement par rapport au rachis en vue de ramener le rachis dans une position anatomique ideale. Ces moyens de reperage 7 peuvent etre realises par tout moyen approprie tel que par un marquage ou un etat de surface realise sur la tige de liaison. Par exemple, ces moyens de reperage 7 peuvent etre realises par un etat de surface different realise sur l'une des facettes 3 de la tige According to another preferred characteristic of real isati on, the connecting rod 1 has a reference shape having as illustrated in FIGS. 1 and 2, in a so-called sagittal plane S. a curvature corresponds to the anatomical curvature of the spine and in a perpendicular plane called the frontal F. a rectilinear profile. The anatomical curvature, in the sagittal plane S of this reference shape thus corresponds to an anatomical kyphosis and lordosis. In other words, the connecting rod 1 is produced so as to present this reference shape at the output of the manufacturing step. According to another preferred characteristic of embodiment, the connecting rod 1 is provided with means 7 for locating its reference shape so that this connecting rod 1 can be positioned correctly relative to the spine in order to bring the spine into an anatomical position ideal. These marking means 7 can be produced by any suitable means such as by marking or a surface finish produced on the connecting rod. For example, these locating means 7 can be produced by a different surface condition produced on one of the facets 3 of the rod
de liaison. Comme cela sera explique dans la suite de la description, les moyens de link. As will be explained in the following description, the means of
reperage 7 peuvent etre realises sur la facette 3 de la tige de liaison, destinee a constituer la face externe ou posterieure de la tige de liaison par rapport au rachis. De fa,con complementaire, ces moyens de reperage 7 peuvent egalement comporter des marques signalant ltorientation de la tige de liaison 1 dans le plan sagittal. Ainsi, la facette comportant un etat de surface different peut comporter, a chaque extremite, marking 7 can be made on the facet 3 of the connecting rod, intended to constitute the external or posterior face of the connecting rod relative to the spine. In a complementary manner, these location means 7 may also include marks signaling the orientation of the connecting rod 1 in the sagittal plane. Thus, the facet having a different surface finish can include, at each end,
un signe distinctif signalant la direction des cervicales ou des lombaires. a distinctive sign indicating the direction of the cervical or lumbar spine.
Selon une autre caracteristique de ['invention apparaissant plus precisement a la fg. 3, la tige de liaison 1 est destinee a etre munie, a chaque extremite du canal 2, d'un systeme 9 de raccordement a un circuit 11 de circulation d'un fluide calorifique ou frigorifique. Dans l'exemple de realisation, la tige 1 est traversee de part en part, par le canal de circulation 2 de sorte que chaque extremite de la tige est pourvue d'un systeme de raccordement tel qu'un manchon fixe de maniere etanche sur chaque extremite de la tige. Le circuit de circulation 11 fait partie d'un dispositif 12 permettant de redresser les deformations du rachis a ['aide de la tige de liaison 1. Un tel dispositif 12 comporte des moyens de production d'un fluide frigorifique 13 et d'un fluide calorifique 14. Ces moyens 13, 14 peuvent etre realises simplement par According to another characteristic of the invention appearing more precisely in fg. 3, the connecting rod 1 is intended to be provided, at each end of the channel 2, with a system 9 for connection to a circuit 11 for circulation of a heat or refrigerant fluid. In the exemplary embodiment, the rod 1 is traversed right through by the circulation channel 2 so that each end of the rod is provided with a connection system such as a sleeve fixed in a sealed manner on each end of the stem. The circulation circuit 11 is part of a device 12 making it possible to straighten the deformations of the spine using the connecting rod 1. Such a device 12 comprises means for producing a refrigerating fluid 13 and a fluid calorific 14. These means 13, 14 can be achieved simply by
une poche d'un liquide refroidi ou d'un liquide rechauffe. a pocket of a cooled liquid or a heated liquid.
De plus, un tel dispositif 12 comporte des moyens 15 de contr61e de la circulation du fluide a l'interieur du canal 2 de la tige 1. Ces moyens 15 permettent de controler la circulation du fluide a 1'interieur du canal 2 de la tige de liaison 1. Ces moyens de contr61e 15 permettent ainsi d'assurer dans le canal 2 de la tige, la circulation dans un premier temps, du fluide frigorifique produit par les moyens 13 afin de rendre la tige malleable et, dans un second temps, du fluide calorifique produit par les moyens 14 afin qu'elle puisse retrouver sa forme de reference. Ces moyens de contro61e 15 peuvent etre realises par exemple par un simple obturateur In addition, such a device 12 comprises means 15 for controlling the circulation of the fluid inside the channel 2 of the rod 1. These means 15 make it possible to control the circulation of the fluid inside the channel 2 of the rod. of connection 1. These control means 15 thus make it possible to ensure, in the channel 2 of the rod, the circulation, firstly, of the refrigerating fluid produced by the means 13 in order to make the rod malleable and, secondly, heat fluid produced by the means 14 so that it can return to its reference shape. These control means 15 can be produced for example by a simple shutter
pour le fluide s'ecoulant par gravite. for fluid flowing by gravity.
Bien entendu, le fluide frigorifique et le fluide calorifique peuvent etre de nature identique ou differente. Par exemple, le fluide frigorifique et le fluide calorifique peuvent etre de lteau salee dont la temperature est respectivement de l'ordre de -10 C et +35 C. Les moyens de production du fluide 13, 14 vent realises par tous moyens appropries et assurent ou non le recyclage du fluide ayant circule a Of course, the refrigerant and the heat fluid may be of the same or different nature. For example, the refrigerant and the heat fluid can be salted water whose temperature is respectively of the order of -10 C and +35 C. The means of producing the fluid 13, 14 are made by all appropriate means and ensure or not the recycling of the fluid having circulates a
l'interieur du canal de la tige de liaison 1. inside the channel of the connecting rod 1.
La mise en ccuvre de la tige de liaison conforme a ['invention decoule The implementation of the connecting rod according to the invention follows
directement de la description qui precede. directly from the above description.
Apres la realisation d'une tige de liaison 1, en un materiau a memoire de forme, il est prevu de conferer a cette tige, une forme de reference possedant de preference dans un plan dit sagittal S. une courbure correspondent a la courbure anatomique du rachis et, dans un plan perpendiculaire dit frontal F. un profil rectiligne. Des moyens de reperage 7 vent amenages sur la tige de liaison 1 ahm de permettre son positionnement correct par rapport au rachis R schematise sur les ffg. 4 et 5, meme lorsque la tige de liaison a perdu sa forme de reference. Ces moyens de reperage 7 permettent ainsi de positionner correctement la tige de liaison 1 par rapport au rachis, en lui permettant d' assurer sa fonction de redressement du rachis afin que ce dernier revienne dans une position anatomique. Dans l'exemple illustre, ces moyens de reperage 7 se trouvent realises sur une facette 3 perpendiculaire au plan sagittal S et qui sera placee a ltexterieur par rapport au rachis R. Des marques sur les extremites de cette tige de liaison permettent d'orienter convenablement la tige de liaison par rapport au haut et teas du rachis R. Cette tige de liaison 1 est destinee ensuite a etre refroidie afin qu'elle devienne malleable. A cet effet, les moyens de controle 15 assurent la circulation du fluide frigorifique a l'interieur du canal 2 de la tige de liaison 1. Par exemple, il peut etre prevu de faire circuler un fluide frigorifique ayant une temperature de l'ordre de moins 10 C. La tige de liaison 1 est alors deformee pour suivre la deformation du rachis R tel que cela ressort de la fg. 4. La deformation de la tige de liaison 1 est realisee en tenant compte des moyens de reperage 7 de la forme de reference de la tige. A cet effet, la tige de liaison 1 est deformee en positionnant la facette 3 de la tige equipee des moyens de reperage 7, du cote externe par rapport au rachis R. La tige de liaison 1 est alors ancree par tous moyens appropries au rachis R. La tige de liaison 1 est ensuite rechauffee afin qutelle recupere sa forme de reference. A cet effet, les moyens de controle 15 assurent la circulation d'un fluide calorifique dans le canal 2 de la tige de liaison 1 de maniere qu'elle puisse retrouver progressivement sa forme de reference. Tel que cela ressort de la fg. 5, la tige de liaison 1 ramene la colonne vertebrale R dans le plan sagittal S compte tenu que la tige presente un profil de reference rectiligne dans le plan frontal F. De meme, la colonne vertebrale R reprend dans le plan sagittal S. la courbure anatomique de After the realization of a connecting rod 1, in a material with shape memory, it is planned to confer on this rod, a reference form preferably having in a plane called sagittal S. a curvature correspond to the anatomical curvature of the rachis and, in a perpendicular plane known as frontal F. a rectilinear profile. Tracking means 7 wind feeds on the connecting rod 1 ahm to allow its correct positioning relative to the spine R schematized on the ffg. 4 and 5, even when the connecting rod has lost its reference shape. These tracking means 7 thus make it possible to correctly position the connecting rod 1 relative to the spine, allowing it to perform its function of straightening the spine so that the latter returns to an anatomical position. In the example illustrated, these marking means 7 are made on a facet 3 perpendicular to the sagittal plane S and which will be placed outside relative to the spine R. Marks on the ends of this connecting rod make it possible to orient appropriately the connecting rod relative to the top and teas of the spine R. This connecting rod 1 is then intended to be cooled so that it becomes malleable. To this end, the control means 15 ensure the circulation of the refrigerating fluid inside the channel 2 of the connecting rod 1. For example, provision may be made to circulate a refrigerating fluid having a temperature of the order of minus 10 C. The connecting rod 1 is then deformed to follow the deformation of the spine R as shown in fg. 4. The deformation of the connecting rod 1 is carried out taking account of the location means 7 of the reference shape of the rod. To this end, the connecting rod 1 is deformed by positioning the facet 3 of the rod fitted with location means 7, on the external side relative to the spine R. The connecting rod 1 is then anchored by any means suitable for the spine R The connecting rod 1 is then reheated so that it recovers its reference shape. To this end, the control means 15 ensure the circulation of a heat fluid in the channel 2 of the connecting rod 1 so that it can gradually return to its reference shape. As shown in fg. 5, the connecting rod 1 brings back the vertebral column R in the sagittal plane S taking into account that the rod presents a rectilinear reference profile in the frontal plane F. Likewise, the vertebral column R resumes in the sagittal plane S. the curvature anatomical of
reference de la tige de liaison 1 a savoir une lordose et une cyphose anatomiques. reference of the connecting rod 1, namely an anatomical lordosis and kyphosis.
Tel que cela ressort de la description qui precede, ['objet de ['invention offre As is apparent from the foregoing description, the object of the invention provides
un procede simple de realisation d'une tige de liaison apte a redresser de maniere controlee, les deformations du rachis. Le controle de la temperature de la tige de liaison par le controle de la temperature du fluide circulant a l'interieur du canal 2 de a simple method of producing a connecting rod capable of straightening in a controlled manner, the deformations of the spine. Controlling the temperature of the connecting rod by controlling the temperature of the fluid circulating inside the channel 2 of
la tige de liaison, permet de modifer la rigidite de la tige de liaison 1. the connecting rod, makes it possible to modify the stiffness of the connecting rod 1.
--
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206153A FR2839880B1 (en) | 2002-05-21 | 2002-05-21 | INTERVERTEBRAL CONNECTING ROD AND DEVICE FOR STRAIGHTENING RACHIS DEFORMATIONS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206153A FR2839880B1 (en) | 2002-05-21 | 2002-05-21 | INTERVERTEBRAL CONNECTING ROD AND DEVICE FOR STRAIGHTENING RACHIS DEFORMATIONS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2839880A1 true FR2839880A1 (en) | 2003-11-28 |
| FR2839880B1 FR2839880B1 (en) | 2004-08-20 |
Family
ID=29414936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0206153A Expired - Fee Related FR2839880B1 (en) | 2002-05-21 | 2002-05-21 | INTERVERTEBRAL CONNECTING ROD AND DEVICE FOR STRAIGHTENING RACHIS DEFORMATIONS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2839880B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8348952B2 (en) | 2006-01-26 | 2013-01-08 | Depuy International Ltd. | System and method for cooling a spinal correction device comprising a shape memory material for corrective spinal surgery |
| CN102965488A (en) * | 2012-11-08 | 2013-03-13 | 华南理工大学 | Heating method of shape memory alloy rod |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0521582D0 (en) | 2005-10-22 | 2005-11-30 | Depuy Int Ltd | An implant for supporting a spinal column |
| GB0600662D0 (en) | 2006-01-13 | 2006-02-22 | Depuy Int Ltd | Spinal support rod kit |
| GB0720762D0 (en) | 2007-10-24 | 2007-12-05 | Depuy Spine Sorl | Assembly for orthopaedic surgery |
| CN105434022B (en) * | 2015-12-24 | 2017-09-05 | 李峰 | A kind of memorial alloy internal fixation device external member |
| CN107260290B (en) * | 2015-12-24 | 2019-06-28 | 南京曼华生物科技有限公司 | A kind of marmem bone plate external member |
| CN105434023B (en) * | 2015-12-24 | 2017-09-26 | 贵州省黔南布依族苗族自治州中医医院 | A kind of orthopedic fixation device external member |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4170990A (en) * | 1977-01-28 | 1979-10-16 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Method for implanting and subsequently removing mechanical connecting elements from living tissue |
| US5540689A (en) * | 1990-05-22 | 1996-07-30 | Sanders; Albert E. | Apparatus for securing a rod adjacent to a bone |
| EP0778010A2 (en) * | 1995-12-07 | 1997-06-11 | Arterial Vascular Engineering, Inc. | Method and apparatus for delivery, deployment and retrieval of stents |
| US5658286A (en) * | 1996-02-05 | 1997-08-19 | Sava; Garard A. | Fabrication of implantable bone fixation elements |
| RU2129844C1 (en) * | 1996-10-15 | 1999-05-10 | Савченко Павел Антонович | Device for correction of vertebral column deformation |
-
2002
- 2002-05-21 FR FR0206153A patent/FR2839880B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4170990A (en) * | 1977-01-28 | 1979-10-16 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Method for implanting and subsequently removing mechanical connecting elements from living tissue |
| US5540689A (en) * | 1990-05-22 | 1996-07-30 | Sanders; Albert E. | Apparatus for securing a rod adjacent to a bone |
| EP0778010A2 (en) * | 1995-12-07 | 1997-06-11 | Arterial Vascular Engineering, Inc. | Method and apparatus for delivery, deployment and retrieval of stents |
| US5658286A (en) * | 1996-02-05 | 1997-08-19 | Sava; Garard A. | Fabrication of implantable bone fixation elements |
| RU2129844C1 (en) * | 1996-10-15 | 1999-05-10 | Савченко Павел Антонович | Device for correction of vertebral column deformation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8348952B2 (en) | 2006-01-26 | 2013-01-08 | Depuy International Ltd. | System and method for cooling a spinal correction device comprising a shape memory material for corrective spinal surgery |
| CN102965488A (en) * | 2012-11-08 | 2013-03-13 | 华南理工大学 | Heating method of shape memory alloy rod |
| CN102965488B (en) * | 2012-11-08 | 2014-06-11 | 华南理工大学 | Heating method of shape memory alloy rod |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2839880B1 (en) | 2004-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10987145B2 (en) | Methods for correction of spinal deformities | |
| JP4861422B2 (en) | Adjustable occipital plate | |
| JP4227020B2 (en) | Bone fixation implant with multiaxial head | |
| ES2295496T3 (en) | DEVICE OF PLURIDIRECTIONAL AND ADAPTABLE VERTEBRAL OSTEOSYNTHESIS OF REDUCED DIMENSION. | |
| CA2170277C (en) | Ancillary equipment for fixing rachidian instrumentation | |
| FR2839880A1 (en) | Connecting bar for intervertebral fixator used in spinal correction has duct for heat exchange fluid to actuate shape memory metal | |
| EP1372503B1 (en) | Spinal osteosynthesis device and preparation method | |
| US5514132A (en) | Spinal osteosynthesis device | |
| EP0719118B1 (en) | Apparatus for spinal fixation | |
| US9204908B2 (en) | Segmental orthopedic device for spinal elongation and for treatment of scoliosis | |
| EP1435861B1 (en) | Osteosynthesis device and preassembly method | |
| EP0470660B1 (en) | Apparatus for the correction of scoliosis | |
| US5542946A (en) | Hook for an occipito-cervical rod or plate of an occipito-cervical osteosynthesis instrumentation | |
| US9211145B2 (en) | Method and system for the treatment of spinal deformities | |
| US8308775B2 (en) | Method for rotating a vertebra or vertebrae | |
| EP2967675B1 (en) | Screw-clamp orthopedic device and method of assembling | |
| JPS63270050A (en) | Implant for surgical correction of deformed spine | |
| FR2615095A1 (en) | Osteosynthesis instrumentation for the correction of lumbar scoliosis through the posterior | |
| FR2880256A1 (en) | Vertebral osteosynthesis system for immobilizing vertebras, has bar with thickness lower than width, and selected based on elastic characteristics of bar metal and average distance separating two pedicle screws to allow elastic flexion | |
| FR2734471A1 (en) | Spinal fixator retaining screw | |
| RU2005110468A (en) | METHOD FOR SURGICAL CORRECTION OF SCOLIOTIC SPINE DEFORMATION | |
| WO2008146982A1 (en) | Iliac screw system | |
| CN101380245B (en) | Assistant orthopedic tool and tool package for scoliosis orthopedy | |
| FR2840798A1 (en) | Bar type spinal osteosynthesis device for maintaining two consecutive spinal vertebrae w.r.t each other has two convex hemispherical parts enclosed by corresponding hemispherical cavities in legs through which threaded bone screw passes | |
| JPH06129B2 (en) | Vertebral body correction device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20060131 |