WO2001097701A1 - Device for adjustable fixing of a tie rod using at least a pedicular screw for vertebral stability - Google Patents

Device for adjustable fixing of a tie rod using at least a pedicular screw for vertebral stability Download PDF

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Publication number
WO2001097701A1
WO2001097701A1 PCT/IB2001/001097 IB0101097W WO0197701A1 WO 2001097701 A1 WO2001097701 A1 WO 2001097701A1 IB 0101097 W IB0101097 W IB 0101097W WO 0197701 A1 WO0197701 A1 WO 0197701A1
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WO
WIPO (PCT)
Prior art keywords
bar
sleeve
bearing
screw
head
Prior art date
Application number
PCT/IB2001/001097
Other languages
French (fr)
Inventor
Emmanuel Bockx
Original Assignee
Emmanuel Bockx
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Emmanuel Bockx filed Critical Emmanuel Bockx
Priority to AU2001274380A priority Critical patent/AU2001274380A1/en
Publication of WO2001097701A1 publication Critical patent/WO2001097701A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/701—Longitudinal elements with a non-circular, e.g. rectangular, cross-section
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • 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
    • A61B17/7041—Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks

Definitions

  • the invention relates to the technical sector of the means for stabilizing the spine, in particular by the posterior route. More particularly, the invention relates to vertebral stabilization by means of a rigid rod intended to connect several vertebrae.
  • the rod is made integral, by various means, with screws of specific design, known under the name of pedicle screw.
  • the invention therefore relates to a device using rods capable of connecting several pedicle screws, in particular when it is necessary to connect a number of vertebrae greater than two, for example. From this basic design, to obtain a so-called assembly
  • the bar can cooperate with the arrangements of a connector element made integral with the pedicle screw.
  • the mounting of the bar can also be carried out, no longer in a remote manner, but very substantially in alignment with the axis of the pedicle screws. This state of the art can be illustrated by the teaching of the patents DE 19512709, US 5,084,048.
  • the connecting bar cooperates with two independent elements, so that it is " necessary for the surgeon to place each of the elements separately at the level of the corresponding screws, then to position the bar by compared to the elements and finally to equip the bar with other complementary elements. If we consider the field of application of this device, we can see that such manipulations are very difficult to carry out with significant risks.
  • the problem which the invention proposes to solve is not only to allow adjustment in the different planes of space, as well in the context of a substantially coaxial mounting of the bar by compared to the pedicle screws, that in the case of lateral mounting of the bar relative to the pedicle screws, 'but also to facilitate the surgeon's work by giving him the possibility of equipping the connecting bar with angular orientation elements cooperating with arrangements of the heads pedicle screws.
  • a support pad having an imprint of positioning and angular orientation in the different planes of the space and able to cooperate with an additional imprint of center (01) that has the head of the pedicle screw along the center (01);
  • the bearing is pierced transversely by a split through hole for the free engagement and sliding of the connecting bar or of a connector element capable of receiving said bar;
  • the bearing, equipped with the bar is housed in a connecting sleeve capable of cooperating with the head of the pedicle screw with angular orientation capacity;
  • the sleeve has arrangements for the passage of the bar or the connector element;
  • a coaxial connection means having detachable coupling arrangements with the sleeve and support with the pad to ensure the blocking in angular position of the entire pad relative to said bar and the pedicle screw;
  • the impression of positioning and angular orientation of the bearing is constituted by a cap of hemispherical shape cooperating with a complementary hemispherical cup formed coaxially with the screw rod.
  • the head of the pedicle screw has an external bearing surface of hemispherical shape capable of cooperating with the bottom of the connecting sleeve which delimits a recess of shape complementary hemispherical.
  • the coaxial connection means is constituted by a circular support plug screwed at the end of the sleeve and having support arrangements with the pad to allow, under a clamping effect, the angular locking in position of the entire pad and of the sleeve relative to the bar, taking into account the elasticity resulting from the split of the bearing.
  • - Figure 1 is a perspective view, before assembly, of the main elements of the salt device on the invention
  • - Figure 2 is a longitudinal sectional view of the device at the level of the swiveling head in all the planes of the space for mounting the connecting bar;
  • FIG. 3 is a cross-sectional view taken along line 3-
  • Figure 5 is a view similar to Figure 4 in the case where the bar is fixed in a connector element;
  • Figure 6 is a purely schematic view showing an example of mounting the device at the spine.
  • the orientable fixing device for the spine comprises a pedicle screw (1) having arrangements for mounting and fixing in an orientable manner, in the different planes of space, of a link bar (2).
  • the device comprises at least two pedicle screws (1) for mounting and supporting the connecting bar (2).
  • the pedicle screw (1) has an anchor rod (la) intended to be screwed into the corresponding pedicle and a head (lb).
  • the anchor rod (la) is advantageously of the type of that defined in patent application FR 99.01765.
  • the rod (la) has, from the head (lb) and over part of its length a cylindrical core with a diameter of conical thread intended to cooperate with the cortex of the bone.
  • the end of the pedicle screw has a conical core with a diameter of cylindrical thread intended to cooperate with the cancellous bone.
  • the zone whose core is cylindrical avoids bursting the cortex of the bone, while the zone whose core is conical, ensures the compression of the cancellous bone and therefore its immobilization in rotation.
  • the pedicle screw (1) receives, at its head (lb), a connecting sleeve (4) capable of receiving, in a removable manner, a coaxial connecting means in the form of 'a bearing (3) cooperating in abutment with the connecting bar (2).
  • the sleeve (4) is drilled over its entire height at (4a) to be engaged around the pedicle screw (1) after the latter has been put in place.
  • the sleeve (4) has two diametrically opposite notches (4b) and (4c) for the passage of the bar (2).
  • the bottom of the sleeve . - (4) defines a hemispherical-shaped recess (4d) capable of receiving the head (lb) of the pedicle screw which has an external bearing surface of complementary hemispherical shape (lb2), with the same center of rotation
  • the head (lb) of the screw (1) has an imprint (lbl) for mounting and orientation in the different planes of the space of the support pad (3).
  • the bearing (3) has a cylindrical body (3a) extended coaxially by a spherical cap (3b).
  • the cylindrical body (3 a) is intended to be engaged and centered in the bore of the sleeve (4), while the spherical bearing (3b) is intended to cooperate with the impression (lbl) by rotation around the center (01) of the pedicle screw head (1).
  • the body (3a) of the bearing is pierced transversely by a through hole (3c) for the free engagement of the connecting bar (2).
  • This hole (3 c) is in communication with a transverse slot (3d) in order to give a certain elasticity to the cylindrical body (3 a) to allow the clamping of the bar, as will be indicated in the following description.
  • several bearings (3) can validly be mounted on the connecting bar (2) for positioning at the level of the corresponding pedicle screws.
  • the blocking in angular position of the whole of the bearing (3) and of the sleeve (4) relative to the connecting bar (2) and to the pedicle screw (1), is effected by a plug (6) screwed on an external threaded seat (4e) formed at the upper end of the sleeve (4).
  • the plug (6) coaxially has an internal bearing (6a) capable of bearing on the upper face of the cylindrical body (3a) of the bearing (3).
  • a tightening effect exerted by the plug (6) causes, taking into account the transverse slot (3d), the elastic deformation of the upper part of the cylindrical body (3a) of the sleeve (3), causing, concomitantly , the blocking of the connecting bar (2).
  • the screw head (lb) has maneuvering imprints cooperating with a tool.
  • the bottom of the imprint of the receiving screw head, with angular orientation capacity, the support pad (3) has a polygonal imprint, while its circular edge has four holes regularly offset on a circumference of 90 °, to increase the tightening torque.
  • the connector element (7) has a part (7a) of generally cylindrical shape to be engaged in the hole (3c) of the bearing (3). This assembly span
  • the device according to the invention in addition to a possibility of orientation relative to the pedicle screws, according to the different planes of space, in order to allow the immobilization of the bar when the optimal position has been found, has many benefits. Indeed, given the design of the support pad, the installation of the entire device by the surgeon is much simpler and more rational. opposition to the solutions of the prior art. According to the characteristics of the invention, it suffices:

Abstract

The invention concerns a device for adjustable fixing of a tie rod (2) using a pedicular screw (1) for vertebral stability, characterised in that it comprises: a support bearing (3) having an impression for positioning and providing angular orientation (3b) in the different planes of the space adapted to co-operate with a corresponding impression of the centre (O1) provided by the screw head (1); the bearing (3) is perforated with a through hole (3c) for free engagement and sliding of the rod (2) or an element capable of receiving it; the bearing (3), provided with the rod, is housed in a linking sleeve (4) adapted to co-operate with the screw head (1) capable of angular orientation along the centre (O1); the sleeve (4) has fittings for passing through the rod (2) or the connector element; coaxial linking means (6) locks in angular position the bearing assembly relative to said rod and screw (1).

Description

DISPOSITIF DE FIXATION ORIENTABLE D'UNE BARRE DE ORIENTABLE FIXING DEVICE OF A BAR
LIAISON AU MOYEN D'AU MOINS UNE VIS PEDICULAIRECONNECTION USING AT LEAST ONE PEDICLE SCREW
POUR LA STABILITE VERTEBRALEFOR VERTEBRAL STABILITY
L'invention se rattache au secteur technique des moyens de stabilisation du rachis notamment par voie postérieure. Plus particulièrement, l'invention concerne la stabilisation vertébrale au moyen d'une tige rigide destinée à relier plusieurs vertèbres. La tige est rendue solidaire, par différents moyens, de vis de conception spécifique, connues sous le nom de vis pédiculaire.The invention relates to the technical sector of the means for stabilizing the spine, in particular by the posterior route. More particularly, the invention relates to vertebral stabilization by means of a rigid rod intended to connect several vertebrae. The rod is made integral, by various means, with screws of specific design, known under the name of pedicle screw.
L'invention concerne donc un dispositif mettant en œuvre des tiges aptes à relier plusieurs vis pédiculaires notamment lorsqu'il est nécessaire de relier un nombre de vertèbres supérieur à deux par exemple. A partir de cette conception de base, pour obtenir un montage ditThe invention therefore relates to a device using rods capable of connecting several pedicle screws, in particular when it is necessary to connect a number of vertebrae greater than two, for example. From this basic design, to obtain a so-called assembly
"latéralisé", la barre peut coopérer avec les agencements d'un élément connecteur rendu solidaire de la vis pédiculaire."lateralized", the bar can cooperate with the arrangements of a connector element made integral with the pedicle screw.
Cet état de la technique peut être illustré par l'enseignement des brevets FR 2.714.287, US 5.312.404.This state of the art can be illustrated by the teaching of patents FR 2,714,287, US 5,312,404.
Le montage de la barre peut également s'effectuer, non plus d'une manière déportée, mais très sensiblement en alignement avec l'axe des vis pédiculaires. Cet état de la technique peut être illustré par l'enseignement des brevets DE 19512709, US 5.084.048.The mounting of the bar can also be carried out, no longer in a remote manner, but very substantially in alignment with the axis of the pedicle screws. This state of the art can be illustrated by the teaching of the patents DE 19512709, US 5,084,048.
Il est également apparu important de pouvoir assurer un réglage de la barre par rapport à l'axe de vissage de la vis pédiculaire dans les trois plans de l'espace pour compenser l'alignement des barres de jonction d'étage et éviter de contraindre les vis pédiculaires de fixation. Une solution ressort par exemple de l'enseignement du brevet précité DE 195122709. La solution décrite dans ce brevet nécessite toutefois l'utilisation d'une barre de conception spéciale se présentant très sensiblement sous forme d'une plaque avec des lumières oblongues participant au réglage.It also appeared important to be able to adjust the bar relative to the screw axis of the pedicle screw in the three planes space to compensate for the alignment of the floor junction bars and avoid constraining the pedicle fixing screws. A solution emerges for example from the teaching of the aforementioned patent DE 195122709. The solution described in this patent however requires the use of a special design bar which is very substantially in the form of a plate with oblong lights participating in the adjustment .
On peut citer également l'enseignement du brevet 5.782.833 qui enseigne une solution pour la fixation orientable d'une barre de liaison au moyen de vis pédiculaires pour assurer notamment une stabilité vertébrale. La tête de vis est engagée avec capacité d'orientation multi directionnelle dans un manchon qui reçoit la barre de liaison. La barre de liaison est engagée entre deux éléments indépendants avec capacité d'orientation et de blocage par un organe de serrage. Le système de serrage de la barre par rapport aux vis pédiculaires ne donne pas totalement satisfaction.We can also cite the teaching of patent 5,782,833 which teaches a solution for the orientable fixing of a connecting bar by means of pedicle screws to ensure in particular vertebral stability. The screw head is engaged with multi-directional orientation capacity in a sleeve which receives the connecting bar. The connecting bar is engaged between two independent elements with orientation and locking capacity by a clamping member. The system for tightening the bar with respect to the pedicle screws is not entirely satisfactory.
En effet, comme indiqué, la barre de liaison coopère avec deux éléments indépendants, de sorte qu'il-" est nécessaire, pour le chirurgien, de mettre en place séparément chacun des éléments au niveau des vis correspondantes, de positionner ensuite la barre par rapport aux éléments et enfin d'équiper la barre des autres éléments complémentaires. Si l'on considère le domaine d'application de ce dispositif, on conçoit que de telles manipulations sont très délicates à réaliser avec des risques importants.As indicated, the connecting bar cooperates with two independent elements, so that it is " necessary for the surgeon to place each of the elements separately at the level of the corresponding screws, then to position the bar by compared to the elements and finally to equip the bar with other complementary elements. If we consider the field of application of this device, we can see that such manipulations are very difficult to carry out with significant risks.
A partir de cet état de la technique, le problème que se propose de résoudre l'invention est non seulement de permettre un réglage dans les différents plans de l'espace, aussi bien dans le cadre d'un montage sensiblement coaxial de la barre par rapport aux vis pédiculaires, que dans le cas d'un montage latéralisé de la barre par rapport aux vis pédiculaires,' mais également de faciliter le travail du chirurgien en lui donnant la possibilité d'équiper la barre de liaison d'éléments d'orientation angulaire coopérant avec des agencements des têtes de vis pédiculaires.From this state of the art, the problem which the invention proposes to solve is not only to allow adjustment in the different planes of space, as well in the context of a substantially coaxial mounting of the bar by compared to the pedicle screws, that in the case of lateral mounting of the bar relative to the pedicle screws, 'but also to facilitate the surgeon's work by giving him the possibility of equipping the connecting bar with angular orientation elements cooperating with arrangements of the heads pedicle screws.
Pour résoudre un tel problème, il a été conçu et mis au point un dispositif qui comprend :To solve such a problem, a device has been designed and developed which includes:
- un coussinet support présentant une empreinte de positionnement et d'orientation angulaire dans les différents plans de l'espace et apte à coopérer avec une empreinte complémentaire de centre (01) que présente la tête de la vis pédiculaire selon le centre (01) ;- A support pad having an imprint of positioning and angular orientation in the different planes of the space and able to cooperate with an additional imprint of center (01) that has the head of the pedicle screw along the center (01);
- le coussinet est percé transversalement par un trou débouchant fendu pour le libre engagement et coulissement de la barre de liaison ou d'un élément connecteur apte à recevoir ladite.barre ; - le coussinet, équipé de la barre, est logé dans un manchon de liaison apte à coopérer avec la tête de la vis pédiculaire avec capacité d'orientation angulaire ;- The bearing is pierced transversely by a split through hole for the free engagement and sliding of the connecting bar or of a connector element capable of receiving said bar; - The bearing, equipped with the bar, is housed in a connecting sleeve capable of cooperating with the head of the pedicle screw with angular orientation capacity;
- le manchon présente des agencements pour le passage de la barre ou de l'élément connecteur ; - un moyen de liaison coaxial présentant des agencements d'accouplement démontable avec le manchon et d'appui avec le coussinet pour assurer le blocage en position angulaire de l'ensemble du coussinet par rapport à ladite barre et la vis pédiculaire ;- The sleeve has arrangements for the passage of the bar or the connector element; - A coaxial connection means having detachable coupling arrangements with the sleeve and support with the pad to ensure the blocking in angular position of the entire pad relative to said bar and the pedicle screw;
- l'orientation angulaire du manchon et du coussinet par rapport à l'empreinte complémentaire de la tête de vis se fait autour du centre (Ol). Il en résulte que les différents coussinets peuvent préalablement être positionnés sur la barre de liaison lui permettant d'être directement monté au niveau des têtes de vis pédiculaires correspondantes.- The angular orientation of the sleeve and of the bearing relative to the complementary impression of the screw head is done around the center (Ol). As a result, the various bearings can be previously positioned on the connecting bar allowing it to be directly mounted at the level of the corresponding pedicle screw heads.
Pour résoudre le problème posé d'assurer l'orientation dans les différents plans de l'espace du coussinet recevant la barre ou l'élément connecteur, l'empreinte de positionnement et d'orientation angulaire du coussinet est constituée par une calotte de forme hémisphérique coopérant avec une cuvette de forme hémisphérique complémentaire formée coaxial ement à la tige de vis.To solve the problem of ensuring the orientation in the different planes of the space of the bearing receiving the bar or the connector element, the impression of positioning and angular orientation of the bearing is constituted by a cap of hemispherical shape cooperating with a complementary hemispherical cup formed coaxially with the screw rod.
Pour résoudre le problème posé d'assurer le blocage de la barre selon différentes positions angulaires, la tête de la vis pédiculaire présente une portée externe d'appui de forme hémisphérique apte à coopérer avec le fond du manchon de liaison qui délimite un chambrage de forme hémisphérique complémentaire.To solve the problem posed of blocking the bar at different angular positions, the head of the pedicle screw has an external bearing surface of hemispherical shape capable of cooperating with the bottom of the connecting sleeve which delimits a recess of shape complementary hemispherical.
Le moyen de liaison coaxial est constitué par un bouchon d'appui circulaire vissé en bout du manchon et présentant des agencements d'appui avec le coussinet pour permettre, sous un effet de serrage, le blocage angulaire en position de l'ensemble du coussinet et du manchon par rapport à la barre, compte tenu de l'élasticité résultant de la fente du coussinet.The coaxial connection means is constituted by a circular support plug screwed at the end of the sleeve and having support arrangements with the pad to allow, under a clamping effect, the angular locking in position of the entire pad and of the sleeve relative to the bar, taking into account the elasticity resulting from the split of the bearing.
Pour résoudre le problème posé d'assurer la mise en place de la vis pédiculaire, la tête de la vis pédiculaire présente des empreintes d'entraînement en rotation coopérant avec un outil. L'invention est exposée ci-après plus en détail à l'aide des figures des dessins annexés dans lesquels :To solve the problem of ensuring the installation of the pedicle screw, the head of the pedicle screw has rotational drive imprints cooperating with a tool. The invention is set out below in more detail with the aid of the figures of the appended drawings in which:
- la figure 1 est une vue en perspective, avant montage, des principaux éléments du dispositif sel on l'invention ; - la figure 2 est une vue en coupe longitudinale du dispositif au niveau de la tête orientable dans tous les plans de l'espace pour le montage de la barre de liaison ;- Figure 1 is a perspective view, before assembly, of the main elements of the salt device on the invention; - Figure 2 is a longitudinal sectional view of the device at the level of the swiveling head in all the planes of the space for mounting the connecting bar;
- la figure 3 est une vue en coupe transversale considérée selon la ligne 3-- Figure 3 is a cross-sectional view taken along line 3-
3 de l'a figure 2 ; - la figure 4 est une vue en coupe transversale considérée selon la ligne 4-3 of a Figure 2; - Figure 4 is a cross-sectional view taken along line 4-
4 de la figure 2 ;4 of Figure 2;
- la figure 5 est une vue semblable à la figure 4 dans le cas où la barre est fixée dans un élément connecteur ; la figure 6 est une vue à caractère purement schématique montrant un exemple de montage du dispositif au niveau de la colonne vertébrale.- Figure 5 is a view similar to Figure 4 in the case where the bar is fixed in a connector element; Figure 6 is a purely schematic view showing an example of mounting the device at the spine.
Comme le montre la figure 1, le dispositif de fixation orientable de la colonne vertébrale comprend une vis pédiculaire (1) présentant des agencements pour le montage et la fixation d'une manière orientable, dans les différents plans de l'espace, d'une barre de liaison (2). Bien évidemment, compte tenu du problème posé qui est d'assurer la liaison entre les différents étages vertébraux, le dispositif comprend au moins deux vis pédiculaires (1) pour le montage et le soutien de la barre de liaison (2).As shown in FIG. 1, the orientable fixing device for the spine comprises a pedicle screw (1) having arrangements for mounting and fixing in an orientable manner, in the different planes of space, of a link bar (2). Obviously, taking into account the problem posed which is to ensure the connection between the various vertebral stages, the device comprises at least two pedicle screws (1) for mounting and supporting the connecting bar (2).
La vis pédiculaire (1) présente une tige d'ancrage (la) destinée à être vissée dans la pédicule correspondante et une tête (lb). Concernant la tige d'ancrage (la), cette dernière est avantageusement du type de celle définie dans la demande de brevet FR 99.01765. Pour l'essentiel, la tige (la) présente, à partir de la tête (lb) et sur une partie de sa longueur une âme cylindrique avec un diamètre de filet conique destiné à coopérer avec la corticale de l'os. L'extrémité de la vis pédiculaire présente une âme conique avec un diamètre de filet cylindrique destiné à coopérer avec l'os spongieux. Autrement dit, la zone dont l'âme est cylindrique, évite de faire éclater la corticale de l'os, tandis que la zone dont l'âme est conique, assure la compression de l'os spongieux et donc son immobilisation en rotation.The pedicle screw (1) has an anchor rod (la) intended to be screwed into the corresponding pedicle and a head (lb). Regarding the anchor rod (la), the latter is advantageously of the type of that defined in patent application FR 99.01765. Essentially, the rod (la) has, from the head (lb) and over part of its length a cylindrical core with a diameter of conical thread intended to cooperate with the cortex of the bone. The end of the pedicle screw has a conical core with a diameter of cylindrical thread intended to cooperate with the cancellous bone. In other words, the zone whose core is cylindrical, avoids bursting the cortex of the bone, while the zone whose core is conical, ensures the compression of the cancellous bone and therefore its immobilization in rotation.
Suivant une caractéristique de l'invention, la vis pédiculaire (1) reçoit, au niveau de sa tête (lb), un manchon de liaison (4) apte à recevoir, d'une manière démontable, un moyen de liaison coaxial sous forme d'un coussinet (3) coopérant en appui avec la barre de liaison (2). Le manchon (4) est percé sur la totalité de sa hauteur en (4a) pour être engagé autour de la vis pédiculaire (1) après mise en place de cette dernière. Bien évidemment, le manchon (4) présente deux échancrares diamétralement opposées (4b) et (4c) pour le passage de la barre (2). Le fond du manchon.- (4) délimite un chambrage de forme hémisphérique (4d) apte à recevoir la tête (lb) de la vis pédiculaire qui présente une portée externe d'appui de forme hémisphérique complémentaire (lb2), de même centre de rotationAccording to a characteristic of the invention, the pedicle screw (1) receives, at its head (lb), a connecting sleeve (4) capable of receiving, in a removable manner, a coaxial connecting means in the form of 'a bearing (3) cooperating in abutment with the connecting bar (2). The sleeve (4) is drilled over its entire height at (4a) to be engaged around the pedicle screw (1) after the latter has been put in place. Obviously, the sleeve (4) has two diametrically opposite notches (4b) and (4c) for the passage of the bar (2). The bottom of the sleeve . - (4) defines a hemispherical-shaped recess (4d) capable of receiving the head (lb) of the pedicle screw which has an external bearing surface of complementary hemispherical shape (lb2), with the same center of rotation
(Ol) que le manchon.(Ol) than the sleeve.
La tête (lb) de la vis (1) présente une empreinte (lbl) pour le montage et l'orientation dans les différents plans de l'espace du coussinet support (3). Le coussinet (3) présente un corps cylindrique (3a) prolongé coaxial ement par une calotte sphérique (3b). Le corps cylindrique (3 a) est destiné à être engagé et centré dans l'alésage du manchon (4), tandis que la portée sphérique (3b) est destinée à coopérer avec l'empreinte (lbl) par rotation autour du centre (01) de la tête de vis pédiculaire (1). D'une manière importante, le corps (3a) du coussinet est percé transversalement par un trou débouchant (3c) pour le libre engagement de la barre de liaison (2). Ce trou (3 c) est en communication avec une fente transversale (3d) afin de donner une certaine élasticité au corps cylindrique (3 a) pour permettre le serrage de la barre, comme il sera indiqué dans la suite de la description. D'une manière avantageuse, compte tenu de ces dispositions, il apparaît que plusieurs coussinets (3) peuvent valablement être montés sur la barre de liaison (2) pour mise en place au niveau des vis pédiculaires correspondantes.The head (lb) of the screw (1) has an imprint (lbl) for mounting and orientation in the different planes of the space of the support pad (3). The bearing (3) has a cylindrical body (3a) extended coaxially by a spherical cap (3b). The cylindrical body (3 a) is intended to be engaged and centered in the bore of the sleeve (4), while the spherical bearing (3b) is intended to cooperate with the impression (lbl) by rotation around the center (01) of the pedicle screw head (1). Importantly, the body (3a) of the bearing is pierced transversely by a through hole (3c) for the free engagement of the connecting bar (2). This hole (3 c) is in communication with a transverse slot (3d) in order to give a certain elasticity to the cylindrical body (3 a) to allow the clamping of the bar, as will be indicated in the following description. Advantageously, taking into account these provisions, it appears that several bearings (3) can validly be mounted on the connecting bar (2) for positioning at the level of the corresponding pedicle screws.
Le blocage en position angulaire de l'ensemble du coussinet (3) et du manchon (4) par rapport à la barre de liaison (2) et à la vis pédiculaire (1), s'effectue par un bouchon (6) vissé sur une portée filetée externe (4e) formée au niveau de l'extrémité supérieure du manchon (4). Le bouchon (6) présente coaxialement une portée interne (6a) apte à prendre appui sur la face supérieure du corps cylindrique (3 a) du coussinet (3). Un effet de serrage exercé par le bouchon (6) provoque, compte tenu de la fente transversale (3d), la déformation élastique de la partie supérieure du corps cylindrique (3a) du manchon (3), en provoquant, d'une manière concomitante, le blocage de la barre de liaison (2). Ces dispositions évitent l'ouverture des échancrures du manchon, avant blocage.The blocking in angular position of the whole of the bearing (3) and of the sleeve (4) relative to the connecting bar (2) and to the pedicle screw (1), is effected by a plug (6) screwed on an external threaded seat (4e) formed at the upper end of the sleeve (4). The plug (6) coaxially has an internal bearing (6a) capable of bearing on the upper face of the cylindrical body (3a) of the bearing (3). A tightening effect exerted by the plug (6) causes, taking into account the transverse slot (3d), the elastic deformation of the upper part of the cylindrical body (3a) of the sleeve (3), causing, concomitantly , the blocking of the connecting bar (2). These provisions prevent the opening of the notches in the sleeve before blocking.
On conçoit qu'avant serrage complet du bouchon (6), il est possible d'orienter l'ensemble du manchon (4) et du coussinet support (3) recevant la barre (2), selon les différents plans de l'espace autour du centre (01) décalé par rapport à l'axe de la barre (2) ou bien situé sur l'axe de la barre (2).It is understood that before complete tightening of the plug (6), it is possible to orient the assembly of the sleeve (4) and of the support pad (3) receiving the bar (2), according to the different planes of the space around the center (01) offset from the axis of the bar (2) or else located on the axis of the bar (2).
A noter que la tête de vis (lb) présente des empreintes de manœuvre coopérant avec un outil. Par exemple, le fond de l'empreinte de la tête de vis recevant, avec capacité d'orientation angulaire, le coussinet support (3), présente une empreinte polygonale, tandis que son bord circulaire présente quatre trous régulièrement décalés sur une circonférence de 90°, pour augmenter le couple de serrage.Note that the screw head (lb) has maneuvering imprints cooperating with a tool. For example, the bottom of the imprint of the receiving screw head, with angular orientation capacity, the support pad (3), has a polygonal imprint, while its circular edge has four holes regularly offset on a circumference of 90 °, to increase the tightening torque.
Compte tenu de ces dispositions et comme le montre la figure 5, il est tout à fait possible d'obtenir un montage latéralisé de la barre (2) en utilisant un élément connecteur (7). En effet, dans ce cas, l'élément connecteur (7) présente une partie (7a) de forme générale cylindrique pour être engagée dans le trou (3c) du coussinet (3). Cette portée d'assemblageGiven these provisions and as shown in Figure 5, it is quite possible to obtain a lateral mounting of the bar (2) using a connector element (7). Indeed, in this case, the connector element (7) has a part (7a) of generally cylindrical shape to be engaged in the hole (3c) of the bearing (3). This assembly span
(7a) de longueur variable, peut être prolongée d'un côté, par une partie (7b) déportée latéralement et présentant tout type d'agencements pour la fixation de la barre de liaison (2). Le montage s'effectue donc de la même façon que la barre (2).(7a) of variable length, can be extended on one side, by a part (7b) offset laterally and having any type of arrangement for fixing the connecting bar (2). The assembly is therefore carried out in the same way as the bar (2).
Le dispositif selon l'invention en plus d'une possibilité d'orientation par rapport aux vis pédiculaires, selon les différents plans de l'espace, afin de permettre l'immobilisation de la barre lorsque la position optimale a été trouvée, présente de nombreux avantages. En effet, compte tenu de la conception du coussinet support, la mise en place de l'ensemble du dispositif par le chirurgien est beaucoup plus simple et rationnel en opposition aux solutions de l'état antérieure de la technique. Selon les caractéristiques de l'invention, il suffit :The device according to the invention in addition to a possibility of orientation relative to the pedicle screws, according to the different planes of space, in order to allow the immobilization of the bar when the optimal position has been found, has many benefits. Indeed, given the design of the support pad, the installation of the entire device by the surgeon is much simpler and more rational. opposition to the solutions of the prior art. According to the characteristics of the invention, it suffices:
- de placer les différentes vis pédiculaires (1) ;- place the different pedicle screws (1);
- d'équiper la barre de liaison (2) du nombre de coussinets nécessaires (3) correspondant aux vis pédiculaires ;- equipping the link bar (2) with the number of bearings required (3) corresponding to the pedicle screws;
- de positionner l'ensemble de la barre (2) équipée des coussinets (3) dans les manchons (4) montés au niveau de chacune des têtes de vis pédiculaires (1) ;- Position the whole of the bar (2) fitted with the pads (3) in the sleeves (4) mounted at each of the pedicle screw heads (1);
- d'assurer le sen'age de l'ensemble au moyen des bouchons de blocage (6). - Ensuring the sen'age of the assembly by means of the blocking plugs (6).

Claims

R E V E N D I C A T I O N SR E V E N D I C A T I O N S
-1- Dispositif de fixation orientable d'une barre de liaison (2) au moyen d'au moins une vis pédiculaire (1) pour notamment la stabilité vertébrale, caractérisé en ce qu'il comprend :-1- Device for orienting a connecting bar (2) by means of at least one pedicle screw (1), in particular for vertebral stability, characterized in that it comprises:
- un coussinet support (3) présentant une empreinte de positionnement et d'orientation angulaire (3b) dans les différents plans de l'espace et apte à coopérer avec une empreinte complémentaire de centre (01) que présente la tête de la vis pédiculaire (1) ;- a support pad (3) having an imprint of angular positioning and orientation (3b) in the different planes of the space and able to cooperate with an additional imprint of center (01) that presents the head of the pedicle screw ( 1);
- le coussinet (3) est percé transversalement par un trou fendu débouchant (3c) pour le libre engagement et coulissement de la barre de liaison (2) ou d'un élément connecteur apte à recevoir ladite barre ;- The bearing (3) is pierced transversely by a slotted through hole (3c) for the free engagement and sliding of the connecting bar (2) or of a connector element capable of receiving said bar;
- le coussinet (3), équipé de la barre, est logé dans un manchon de liaison (4) apte à coopérer avec la tête de la vis pédiculaire (1) avec capacité d'orientation angulaire selon le centre (Ol) ;- the bearing (3), fitted with the bar, is housed in a connecting sleeve (4) able to cooperate with the head of the pedicle screw (1) with capacity for angular orientation along the center (Ol);
- le manchon (4) présente des agencements pour le passage de la barre (2) ou de l'élément connecteur ;- The sleeve (4) has arrangements for the passage of the bar (2) or the connector element;
- un moyen de liaison coaxial (6) présentant des agencements d'accouplement démontable avec le manchon (4) et d'appui avec le coussinet pour assurer le blocage en position angulaire de l'ensemble du coussinet par rapport à ladite barre et la vis pédiculaire ;- a coaxial connection means (6) having detachable coupling arrangements with the sleeve (4) and support with the pad to ensure the blocking in angular position of the entire pad relative to said bar and the screw pedicle;
- l'orientation angulaire du manchon et du coussinet, par rapport à l'empreinte complémentaire de la tête de vis se fait autour du centre (Ol).- The angular orientation of the sleeve and the bearing, relative to the complementary impression of the screw head is made around the center (Ol).
-2- Dispositif de fixation selon la revendication 1, caractérisé en ce que l'empreinte (3b) de positionnement et d'orientation angulaire du coussinet (3) est constituée par une calotte de forme hémisphérique coopérant avec une cuvette de forme hémisphérique complémentaire fomiée coaxialement à la tête de vis (1) centrée en (01).-2- A fixing device according to claim 1, characterized in that the imprint (3b) for positioning and angular orientation of the bearing (3) is constituted by a cap of hemispherical shape cooperating with a cup of complementary hemispherical shape formed coaxially with the screw head (1) centered in (01).
-3- Dispositif de fixation selon l'une quelconque des revendications 1 et 2, caractérisé en ce que la calotte hémisphérique (3b) du coussinet (3) est formée dans le prolongement d'un corps cylindrique (3a) engagé et centré sur (01) dans l'alésage du manchon (4), tandis que ledit corps présente une fente transversale (3d) en communication avec le trou (3c) pour l'engagement de la barre de liaison (2).-3- A fixing device according to any one of claims 1 and 2, characterized in that the hemispherical cap (3b) of the bearing (3) is formed in the extension of a cylindrical body (3a) engaged and centered on ( 01) in the bore of the sleeve (4), while said body has a transverse slot (3d) in communication with the hole (3c) for the engagement of the connecting bar (2).
-4- Dispositif de fixation selon la revendication 1, caractérisé en ce que la tête de la vis pédiculaire (1) présente une portée externe d'appui de forme hémisphérique de centre (01) apte à coopérer avec le fond du manchon de liaison (4) qui délimite un chambrage de forme hémisphérique complémentaire.-4- A fixing device according to claim 1, characterized in that the head of the pedicle screw (1) has an outer bearing surface of hemispherical shape of center (01) capable of cooperating with the bottom of the connecting sleeve ( 4) which delimits a chamber of complementary hemispherical shape.
-5- Dispositif selon la revendication 1, caractérisé en ce que le manchon de liaison (4) et le coussinet (3) s'orientent par rapport au chambrage hémisphérique de la tête de la vis pédiculaire (1) sur l'axe de rotation (01) décalé ou non par rapport à la barre (2).-5- Device according to claim 1, characterized in that the connecting sleeve (4) and the pad (3) are oriented relative to the hemispherical recess of the head of the pedicle screw (1) on the axis of rotation (01) offset or not relative to the bar (2).
-6- Dispositif de fixation selon la revendication 1, caractérisé en ce que le manchon (4) est percé en (4a) pour être engagé autour de la vis pédiculaire (1), après mise en place de cette dernière et présente deux échancrures (4b --6- A fixing device according to claim 1, characterized in that the sleeve (4) is pierced in (4a) to be engaged around the pedicle screw (1), after placement of the latter and has two notches ( 4b -
4c) diamétralement opposées pour le passage de la barre (2) ou de l'élément connecteur. -7- Dispositif de fixation selon la revendication 1, caractérisé en ce que le moyen de liaison coaxial est constitué par un bouchon circulaire (6) vissé sur une portée filetée externe (4e) formée au niveau de l'extrémité supérieure dudit manchon (4), ledit bouchon présentant une portée interne4c) diametrically opposite for the passage of the bar (2) or the connector element. -7- A fixing device according to claim 1, characterized in that the coaxial connecting means is constituted by a circular plug (6) screwed onto an external threaded surface (4e) formed at the upper end of said sleeve (4 ), said plug having an internal bearing
(6a) apte à prendre appui sur le coussinet (3).(6a) able to bear on the pad (3).
-8- Dispositif de fixation selon la revendication 1, caractérisé en ce que l'élément connecteur (7) présente une partie de forme générale cylindrique (7a) pour être engagé dans le trou du coussinet (3) et une partie (7b) déportée latéralement présentant des agencements pour la fixation de la barre de liaison (2).-8- A fixing device according to claim 1, characterized in that the connector element (7) has a generally cylindrical part (7a) to be engaged in the hole of the bearing (3) and a part (7b) offset laterally having arrangements for fixing the connecting bar (2).
-9- Dispositif de fixation selon la revendication 1, caractérisé en ce que la tête de la vis pédiculaire (1) présente des empreintes d'entraînement dans le centre de la vis et en périphérie coopérant avec un outil spécifique. -9- A fixing device according to claim 1, characterized in that the head of the pedicle screw (1) has drive imprints in the center of the screw and at the periphery cooperating with a specific tool.
PCT/IB2001/001097 2000-06-22 2001-06-22 Device for adjustable fixing of a tie rod using at least a pedicular screw for vertebral stability WO2001097701A1 (en)

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FR0008191A FR2810533B1 (en) 2000-06-22 2000-06-22 DEVICE FOR ORIENTABLE FIXATION OF A CONNECTION BAR BY MEANS OF AT LEAST ONE PEDICLE SCREW FOR VERTEBRAL STABILITY
FR00/08191 2000-06-22

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1725175A2 (en) * 2004-02-27 2006-11-29 Custom Spine, Inc. Polyaxial pedicle screw assembly
EP1824398A2 (en) * 2004-08-10 2007-08-29 Lanx LLC Screw and rod fixation system
WO2007130840A1 (en) * 2006-05-01 2007-11-15 Warsaw Orthopedic, Inc Locking device and method, for use in a bone stabilization system, employing a set screw member and deformable saddle member
KR20090037316A (en) * 2007-10-11 2009-04-15 비이더만 모테크 게엠베하 Bone anchoring device and bone stabilization device including the same
US7914559B2 (en) 2006-05-30 2011-03-29 Warsaw Orthopedic, Inc. Locking device and method employing a posted member to control positioning of a stabilization member of a bone stabilization system
US8961568B2 (en) 2007-01-12 2015-02-24 Lanx, Inc. Bone fastener assembly
US8998961B1 (en) 2009-02-26 2015-04-07 Lanx, Inc. Spinal rod connector and methods
CN110101445A (en) * 2019-04-29 2019-08-09 上海光韵达数字医疗科技有限公司 A kind of external fixation of fracture brace and its manufacturing method based on 3D printing

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829014B1 (en) * 2001-09-03 2005-04-08 Stryker Spine SPINAL OSTEOSYNTHESIS SYSTEM COMPRISING A SUPPORT SKATE
WO2003059182A1 (en) * 2001-12-31 2003-07-24 Synthes Ag Chur Device for a ball-and-socket-type connection of two parts
JP2005522258A (en) 2002-04-09 2005-07-28 エヌエーエス・メディカル・テクノロジーズ・インコーポレーテッド Bone fixation device
US7604654B2 (en) 2005-02-22 2009-10-20 Stryker Spine Apparatus and method for dynamic vertebral stabilization
US8137385B2 (en) 2005-10-31 2012-03-20 Stryker Spine System and method for dynamic vertebral stabilization
EP1891904B1 (en) 2006-08-24 2013-12-25 Biedermann Technologies GmbH & Co. KG Bone anchoring device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5176680A (en) * 1990-02-08 1993-01-05 Vignaud Jean Louis Device for the adjustable fixing of spinal osteosynthesis rods
US5536268A (en) * 1992-12-23 1996-07-16 Plus Endoprothetik Ag System for osteosynthesis at the vertebral column, connecting element for such a system and tool for its placement and removal
WO1998008454A1 (en) * 1994-05-25 1998-03-05 Jackson Roger P Apparatus and method for spinal fixation and correction of spinal deformities
US5733286A (en) * 1997-02-12 1998-03-31 Third Millennium Engineering, Llc Rod securing polyaxial locking screw and coupling element assembly
US5782833A (en) * 1996-12-20 1998-07-21 Haider; Thomas T. Pedicle screw system for osteosynthesis
US5910142A (en) * 1998-10-19 1999-06-08 Bones Consulting, Llc Polyaxial pedicle screw having a rod clamping split ferrule coupling element
FR2786088A1 (en) * 1998-11-24 2000-05-26 Dimso Sa Spinal osteosynthesis fixing frame ferrule has ferrule with groove fitting in clamping socket in frame

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH678803A5 (en) 1989-07-12 1991-11-15 Sulzer Ag
WO1991016020A1 (en) * 1990-04-26 1991-10-31 Danninger Medical Technology, Inc. Transpedicular screw system and method of use
US5129900B1 (en) 1990-07-24 1998-12-29 Acromed Corp Spinal column retaining method and apparatus
FR2714287B1 (en) 1993-12-23 1996-01-19 Bornert Didier Spinal stabilization device.
DE19507141B4 (en) * 1995-03-01 2004-12-23 Harms, Jürgen, Prof. Dr.med. Locking
DE19512709A1 (en) 1995-04-08 1996-10-10 Rehder Guenther Holding device for prosthesis
US5885286A (en) * 1996-09-24 1999-03-23 Sdgi Holdings, Inc. Multi-axial bone screw assembly
US5989254A (en) * 1997-05-20 1999-11-23 Katz; Akiva Raphael Pedicle screw assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5176680A (en) * 1990-02-08 1993-01-05 Vignaud Jean Louis Device for the adjustable fixing of spinal osteosynthesis rods
US5536268A (en) * 1992-12-23 1996-07-16 Plus Endoprothetik Ag System for osteosynthesis at the vertebral column, connecting element for such a system and tool for its placement and removal
WO1998008454A1 (en) * 1994-05-25 1998-03-05 Jackson Roger P Apparatus and method for spinal fixation and correction of spinal deformities
US5782833A (en) * 1996-12-20 1998-07-21 Haider; Thomas T. Pedicle screw system for osteosynthesis
US5733286A (en) * 1997-02-12 1998-03-31 Third Millennium Engineering, Llc Rod securing polyaxial locking screw and coupling element assembly
US5910142A (en) * 1998-10-19 1999-06-08 Bones Consulting, Llc Polyaxial pedicle screw having a rod clamping split ferrule coupling element
FR2786088A1 (en) * 1998-11-24 2000-05-26 Dimso Sa Spinal osteosynthesis fixing frame ferrule has ferrule with groove fitting in clamping socket in frame

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1725175A4 (en) * 2004-02-27 2008-05-21 Custom Spine Inc Polyaxial pedicle screw assembly
EP1725175A2 (en) * 2004-02-27 2006-11-29 Custom Spine, Inc. Polyaxial pedicle screw assembly
EP1824398A2 (en) * 2004-08-10 2007-08-29 Lanx LLC Screw and rod fixation system
EP1824398A4 (en) * 2004-08-10 2009-04-08 Lanx Llc Screw and rod fixation system
WO2007130840A1 (en) * 2006-05-01 2007-11-15 Warsaw Orthopedic, Inc Locking device and method, for use in a bone stabilization system, employing a set screw member and deformable saddle member
US7914559B2 (en) 2006-05-30 2011-03-29 Warsaw Orthopedic, Inc. Locking device and method employing a posted member to control positioning of a stabilization member of a bone stabilization system
US8961568B2 (en) 2007-01-12 2015-02-24 Lanx, Inc. Bone fastener assembly
US11350970B2 (en) 2007-01-12 2022-06-07 Zimmer Biomet Spine, Inc. Bone fastener assembly
US10307184B2 (en) 2007-01-12 2019-06-04 Zimmer Biomet Spine, Inc. Bone fastener assembly
EP2335624A1 (en) * 2007-10-11 2011-06-22 BIEDERMANN MOTECH GmbH Bone anchoring device and bone stabilization device including the same
US8394126B2 (en) 2007-10-11 2013-03-12 Biedermann Technologies Gmbh & Co. Kg Bone anchoring device and bone stabilization device including the same
CN102715944A (en) * 2007-10-11 2012-10-10 比德曼莫泰赫有限公司 Bone anchoring device
US9220540B2 (en) 2007-10-11 2015-12-29 Biedermann Technologies Gmbh & Co. Kg Bone anchoring device and bone stabilization device including the same
KR101586832B1 (en) * 2007-10-11 2016-01-20 비이더만 테크놀로지스 게엠베하 & 코. 카게 Bone Anchoring Device and Bone Stabilization Device including the same
EP2047812A1 (en) * 2007-10-11 2009-04-15 BIEDERMANN MOTECH GmbH Bone anchoring device and bone stabilization device including the same
KR20090037316A (en) * 2007-10-11 2009-04-15 비이더만 모테크 게엠베하 Bone anchoring device and bone stabilization device including the same
US8998961B1 (en) 2009-02-26 2015-04-07 Lanx, Inc. Spinal rod connector and methods
CN110101445A (en) * 2019-04-29 2019-08-09 上海光韵达数字医疗科技有限公司 A kind of external fixation of fracture brace and its manufacturing method based on 3D printing

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FR2810533B1 (en) 2003-01-10
FR2810533A1 (en) 2001-12-28

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