FR2715825A1 - Self-aligning rod for spinal osteosynthesis apparatus - Google Patents

Self-aligning rod for spinal osteosynthesis apparatus Download PDF

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Publication number
FR2715825A1
FR2715825A1 FR9401662A FR9401662A FR2715825A1 FR 2715825 A1 FR2715825 A1 FR 2715825A1 FR 9401662 A FR9401662 A FR 9401662A FR 9401662 A FR9401662 A FR 9401662A FR 2715825 A1 FR2715825 A1 FR 2715825A1
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FR
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Prior art keywords
self
end
rod
cable
characterized
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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.)
Pending
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FR9401662A
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French (fr)
Inventor
Fournet-Fayard Jacques
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Soprane SA
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Soprane SA
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002Longitudinal elements, e.g. rods
    • A61B17/7011Longitudinal element being non-straight, e.g. curved, angled or branched
    • A61B17/7013Longitudinal element being non-straight, e.g. curved, angled or branched the shape of the element being adjustable before use
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002Longitudinal elements, e.g. rods
    • A61B17/7004Longitudinal elements, e.g. rods with a cross-section which varies along its length

Abstract

The rod (3) is made from a series of identical components (4) which are articulated relative to one another and lockable. Each component comprises a cylindrical body with a central channel (4b) through it, having a spherical portion (4c) at one end and a truncated conical recess (4d) at the other, shaped to receive the spherical tip of an adjacent component. The cylindrical components are locked together to form a rigid body by means of an inner cable (5a) with a fixed tip (5b) at one end and a threaded tip (5c) at the other designed to receive a bush (5f) with a spherical surface and a locking nut.

Description

La présente invention a trait à une tige de liaison auto-cintrable pour fixateur de rachis et plus particulièrement pour l'ostéosynthèse de la région lombo-sacrée. The present invention relates to a self-bendable connecting rod for spine fixator and in particular for osteosynthesis of the lumbosacral region.

On utilise couramment pour les ostéosynthèses de rachis lombo-sacré des fixateurs comprenant des vis pédiculaires ancrées dans chaque vertèbre à réunir et des tiges métalliques permettant la liaison entre chaque vertèbre ou chaque vis. commonly used for spinal osteosynthesis of lumbosacral scavengers comprising pedicle screws anchored in each vertebra to be joined and the metal rods permitting binding between each vertebra or each screw. Il se trouve que les vis pédiculaires, du fait de la lordose lombaire et de l'écartement pédiculaire variable du haut en bas du rachis lombaire, ne sont jamais parfaitement alignees. It is found that the pedicle screws, because of the lumbar lordosis and the spacing pedicle variable from top to bottom of the lumbar spine, are never perfectly aligned.

Cette variation entre chaque vis pédiculaire oblige le chirurgien à cintrer la tige de liaison afin d'assurer un bon contact avec les moyens de serrage prévus sur les vis pédiculaires. This variation between each pedicle screw forces the surgeon bending the connecting rod to ensure good contact with the clamping means provided on the pedicle screws.

On remarque que la courbure a obtenir est irrégulière et complexe, rendant le cintrage manuel de la tige de liaison difficile et fastidieux. It is noted that the curvature is obtained is irregular and complex, making the manual bending of the difficult and tedious connecting rod.

C'est à ces inconvénients qu'entend plus particulièrement remédier la présente invention. It is these drawbacks more particularly to remedy the present invention.

Le but de l'invention est de réunir les vis pédiculaires à l'aide d'une tige initialement souple du fait de sa constitution et permettant une connexion facile, tandis qu'elle n'est rendue rigide que secondairement lorsque celle-ci est mise en place sur toutes les vis pédiculaires. The object of the invention is to connect the pedicle screws using an initially flexible rod due to its constitution and allowing an easy connection, while it is made rigid secondarily when the latter is carried in place on all the pedicle screws.

La tige auto-cintrable suivant la présente invention comprend une pluralité d'éléments identiques articulés entre eux et des moyens de serrage disposés suivant l'axe principal de ladite tige en vue du blocage desdits éléments entre eux de manière à rigidifier la tige. The self-bendable rod according to the present invention comprises a plurality of identical elements articulated together and clamping means disposed along the main axis of said rod to lock said elements between them so as to stiffen the stem.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer The accompanying drawing, given by way of example, will better understand the invention, its characteristics and the benefits it can provide
Fig. Fig. 1 et 2 sont des vues montrant la mise en place de la tige auto-cintrable suivant l'invention dans la région lombo-sacrée à l'aide de vis pédiculaires connues en soi. 1 and 2 are views showing the implementation of the self-bendable rod according to the invention in the lumbosacral region using pedicular screws known per se.

Fig. Fig. 3 est une vue en perspective éclatée illustrant les différents éléments identiques et les moyens de serrage de la tige auto-cintrable. 3 is an exploded perspective view illustrating the various identical elements and the clamping means of the self-bendable rod.

Fig. Fig. 4 est une coupe représentant la tige auto-cintrable en position rigidifiée. 4 is a sectional view showing the self-stiffened bendable rod position.

Fig. Fig. 5 est une vue de détail montrant la liaison entre chaque élément identique constituant la tige de liaison. 5 is a detailed view showing the connection between each single element constituting the connecting rod.

Fig. Fig. 6 est une coupe illustrant une variante des moyens de serrage axial pour la mise en compression de la tige auto-cintrable. 6 is a section illustrating a variant of the axial clamping means for setting the compression self-bendable rod.

On a représenté en fig. There is shown in Fig. 1 et 2 la partie lombo-sacrée d'une colonne vertébrale 1 dont les vertèbres lombaires la et le sacrum lb sont réunis par l'intermédiaire d'un fixateur 2 en vue de soulager par exemple les disques 1c. 1 and 2 the lumbosacral part of a spine 1, the lumbar vertebrae and the sacrum lb are joined via a fastener 2 in order to alleviate e.g. 1c discs. Le fixateur 2 est constitué d'un certain nombre de vis pédiculaires 2a connues en soi ancrées de part et d'autre des apophyses épineuses ld de chaque vertèbre la et plus particuliérement dans les pédicules le. The fixator 2 consists of a number of pedicle screws 2a known per se anchored on either side of the spinous processes of each vertebra ld and more particularly in the pedicles. Les vis pédiculaires 2a sont reliées les unes aux autres par une tige auto-cintrable 3 qui est retenue sur ces dernières par des moyens de serrage connus en soi. Pedicle screws 2a are connected to each other by a self-bendable rod 3 that is retained on the latter by clamping means known per se.

En fig. In Fig. 3 à 5, on a montré la tige auto-cintrable 3 qui est constituée d'une pluralité d'éléments identiques 4 articulés les uns par rapport aux autres et retenus par des moyens de serrage axial 5. 3-5 there is shown the self-bendable rod 3 which is comprised of a plurality of identical elements 4 hinged relative to each other and retained by means of axial tightening 5.

Chaque élément 4 comporte un corps cylindrique 4a percé en son milieu d'un alésage débouchant 4b. Each element 4 comprises a cylindrical body 4a bored in the middle of a bore 4b. L'extrémité 4c du corps cylindrique 4a présente un profil en portion de sphère, tandis que l'autre extrémité 4d est en forme de tronc de cône dont la base la moins large est dirigée à l'intérieur du corps 4a. The end 4c of the cylindrical body 4a has a profile portion of a sphere, while the other end 4d is shaped like a truncated cone, the narrower base is directed inside the body 4a. L'inclinaison du tronc de cône de l'extrémité 4g de chaque élément 4 présente un angle suffisant pour recevoir l'ex trémité 4c en portion de sphère des éléments suivants 4 afin que chaque élément puisse pivoter l'un par rapport à l'autre. The inclination of the truncated cone of the end 4g of each element 4 has an angle sufficient to receive the former Tremite 4c sphere portion 4 of the following elements so that each element can pivot relative to each other .

Les moyens de serrage 5 sont constitués plus particulièrement d'un câble Sa dont l'une des extrémités est solidaire d'une butee cylindrique 5b tandis que l'autre comporte une partie filetée 5c afin de recevoir un écrou de serrage 5g. The clamping means 5 are constituted in particular of a His cable whose one end is integral with a cylindrical abutment 5b while the other includes a threaded portion 5c for receiving a clamping nut 5g. La butée cylindrique 5b est prévue d'un diamètre extérieur équivalent à celui du corps 4a des éléments 4. La butée cylindrique 5b comporte du côté de l'ancrage du câble 5a un profil en tronc de cône 5e dont la base la moins large est dirigée à l'intérieur et en direction du milieu de ladite butée. The cylindrical stopper 5b is provided with an outer diameter equivalent to that of the body 4a of the elements 4. The cylindrical abutment 5b comprises of the cable anchor side 5a a profile in the fifth truncated cone, the narrower base directed inside and towards the center of said stopper. L'inclinaison du tronc de cône 5e est équivalente à celle prévue aux extrémités 4g de chaque élément 4 afin de recevoir la portion de sphère 4c du premier élément 4 de la tige 3. The inclination of the fifth truncated cone is equivalent to that provided to 4g ends of each element 4 for receiving the spherical portion 4c of the first member 4 of the rod 3.

La tige de liaison auto-cintrable 3 est composée de plusieurs éléments 4 qui sont enfilés sur le câble 5a du moyen de serrage 5, de manière que ledit câble traverse chacun des alésages 4b desdits éléments 4. The self-bendable connecting rod 3 is made up of several elements 4 that are slipped on the cable 5a of the clamping means 5, so that said cable passes through each of the bores of said elements 4 4b.

Du côté de la partie filetée 5c du câble Sa et entre l'écrou Sd et le dernier élément 4 de la tige auto-cintrable 3 est prévue une butée d'appui 5f percée en son milieu d'un trou 59 pour le passage dudit câble. The side of the threaded portion 5c of the cable Sa and Sd between the nut and the last element 4 of the self-bendable rod 3 is provided an abutment 5f pierced at its middle with a hole 59 for passage of said cable . La butée 59 comporte une extrémité 5 en portion de sphère de diamètre équivalent à celui prévu du côté des extrémités 4c de chaque élément 4 de maniére à coopérer avec l'extrémité 4g en portion de cône du dernier élément 4 de la tige 3. The stop 59 has an end portion 5 of equivalent sphere diameter to that provided on the side end 4c of each element 4 so as to cooperate with the end 4g cone portion of the last element 4 of the rod 3.

L'autre extrémité 51 de la butée 5f est prévue plane pour constituer une surface d'appui perpendiculaire à l'axe du câble 5a pour l'écrou de serrage Sd. The other end 51 of the abutment is planar 5f provided to constitute a bearing surface perpendicular to the axis of the cable 5a to Sd nut.

En fig. In Fig. 5, on a montré la liaison entre chaque élément 4 et plus particulièrement l'état de surface des extrémités 4c et 4g qui sont prévues rugueuses afin d'améliorer le contact pour éviter toute mobilité entre lesdits éléments après la mise en tension du câble 5a des moyens de serrage 5. 5, there is shown the connection between each element 4 and more particularly the end surface 4c and 4g of state which are provided rough in order to improve the contact to prevent movement between said members after the tensioning of the cable 5a clamping means 5.

En fig. In Fig. 6, on a montré une variante de mise en tension du câble 5a permettant l'immobilisation des éléments 4 dans leur position définitive. 6, there is shown a tensioning variant of the cable 5a permitting immobilisation of elements 4 in their final position. La variante consiste à utiliser une butée d'appui 6 identique à celle 5f représentée en fig. The alternative is to use an abutment 6 identical to 5f shown in Fig. 3 et 4, mais comportant un corps 6a déformable latéralement au moyen par exemple d'une pince en vue de sertir à l'intérieur de son alésage 6b le câble 5a après sa mise en tension. 3 and 4, but having a deformable body 6a laterally by means for example of a clamp in order to crimp within its bore 6b cable 5a after tensioning.

On remarque que la mise en tension du câble 5a soit par l'interme- diaire de l'écrou 5, soit au moyen d'une pince pour son sertissage dans la butée d'appui 6 permet la rigidification de la tige 3 et plus particulièrement l'immobilisation des éléments 4 entre eux une fois leur position déterminée. Note that the tensioning of the cable 5a is through the intermediary of the nut 5, or by means of a clamp for its setting in the supporting stop 6 allows the stiffening of the rod 3 and more particularly immobilizing elements 4 between them once their fixed position.

En effet, le chirurgien procède à la mise en tension de la tige 3 une fois que celle-ci est disposée sur les vis pédiculaires 2a du fixateur 2. La souplesse de la tige 3, du fait des multiples rotations angulaires entre chaque élément 4 permet de récupérer toutes les variations entre les vis pédiculaires 2a ancrées dans les pédicules le de chaque vertèbre la. In effect, the surgeon proceeds to the rod 3 of tensioning once the latter is disposed on the pedicle screws 2a fixer 2. The flexibility of the shaft 3, due to the multiple angular rotations between each element 4 allows to recover any variations between the pedicle screws 2a anchored in the pedicles of the vertebra each.

On note que le câble 5a peut être remplacé par une tige filetée souple permettant d'obtenir les mêmes rotations angulaires entre chaque élément 4 pour que la tige 3 auto-cintrable puisse récupérer les variations entre chacune des vis pédiculaires 2a. Note that the cable 5a may be replaced by a flexible threaded rod to obtain the same angular rotations between each element 4 so that the stem 3 can recover self-bendable variations between each of the pedicle screws 2a. La tige filetée permet de comprimer sous l'effet d'un écrou de serrage chacun des éléments 4 en vue de les immobiliser dans leur position définitive. The threaded rod can compress under the effect of a clamping nut each of the elements 4 in order to immobilize them in their final position.

Il doit d'ailleurs être entendu que la description qui précéde n'a été donnée qu'à titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les détails d'exécution décrits par tous autres équivalents. It should also be understood that the foregoing description has been given only as an example and does not limit the scope of the invention which would not depart by replacing the execution details described by any other equivalents.

Claims (8)

    REVENDICATIONS
  1. 1. Tige de liaison auto-cintrable pour fixateur permettant l'ostéosynthèse du rachis lombo-sacré, ladite tige étant fixée sur des vis pédiculaires connues en soi préalablement ancrées sur chaque vertèbre de la colonne, caractérisée en ce qu'elle comprend une pluralité d'éléments identiques (4) articulés entre eux et des moyens de serrage (S) disposés suivant l'axe principal de la tige (3) de manière à immobiliser lesdits éléments dans leur position définitive. 1. Self-bendable connecting rod for fixing for osteosynthesis of the lumbosacral spine, said rod being fixed to the pedicle screws are known per se previously anchored on each vertebra of the column, characterized in that it comprises a plurality of identical elements (4) hinged together and clamping means (S) disposed along the main axis of the rod (3) so as to immobilize said elements in their final position.
  2. 2. Tige de liaison auto-cintrable suivant la revendication 1, caractérisée en ce que chaque élément (4) est constitué d'un corps cylindrique (4a) percé en son milieu d'un alésage débouchant (4b) et dont l'une des extrémités (4c) est prévue en portion de sphère, tandis que la seconde extrémité (4d) présente un profil en tronc de cône dont la base la moins large est dirigée à l'intérieur dudit corps (4a). 2. self-bendable connecting rod according to Claim 1, characterized in that each element (4) consists of a cylindrical body (4a) pierced at its middle with a bore (4b) and one of whose ends (4c) is provided in portion of a sphere, while the second end (4d) has a profile in the truncated cone, the narrower base is directed within said body (4a).
  3. 3. Tige de liaison auto-cintrable suivant la revendication 1, caractérisée en ce que l'inclinaison du tronc de cône prévu à l'extrémité (4g) de l'élément (4) est déterminée pour recevoir l'extrémité (4c) en portion de sphère d'un autre élément (4) en vue de constituer une articulation. 3. self-bendable connecting rod according to Claim 1, characterized in that the inclination of the truncated cone provided at the end (4g) of the element (4) is determined to receive the end (4c) in sphere portion of another element (4) in order to form a joint.
  4. 4. Tige de liaison auto-cintrable suivant la revendication 1, caractérisée en ce que les moyens de serrage consistent en un câble (5a) traversant les éléments (4) en leur milieu par l'intermédiaire des alésages (4b), le câble (5a) étant solidaire à l'une de ses extrémités d'une butée cylindrique (5b), tandis que l'autre extrémité comporte une partie filetée (5c) qui coopère avec un écrou (su), et une butée d'appui (5f) qui est placée entre l'écrou (5d) et le dernier élément (4) de la tige (3) pour la mise en tension du câble (Sa). 4. Self-bendable connecting rod according to Claim 1, characterized in that the clamping means consist of a cable (5a) extending through the elements (4) in the middle through bores (4b), the cable ( 5a) being secured at one of its ends with a cylindrical abutment (5b), while the other end comprises a threaded portion (5c) cooperates with a nut (su), and a bearing stop (5f ) which is placed between the nut (5d) and the last element (4) of the rod (3) for the tensioning cable (Sa).
  5. 5. Tige de liaison auto-cintrable suivant la revendication 4, caractérisée en ce que la butée (5~) comporte du côté de l'ancrage dudit câble (5a) un profil en tronc de cône (5e) d'inclinaison équivalente à celle (4a) des extrémités des éléments (4) pour coopérer avec la sphère (4c) du premier élément (4) de la tige (3). 5. Self-bendable connecting rod according to Claim 4, characterized in that the abutment (5 ~) comprises the side of the anchoring said cable (5a) a truncated cone profile (5e) of similar taper as (4a) the ends of the elements (4) for cooperating with the sphere (4c) of the first member (4) of the rod (3).
  6. 6. Tige de liaison auto-cintrable suivant la revendication 4, caractérisée en ce que la butée d'appui (5f) comprend un trou (59) ménagé en son milieu pour le passage du câble (5a), une première extrémité (5t) en portion de sphère pour coopérer avec le profil en tronc de cône (4d) du dernier élément (4) de la tige (3) et une seconde extrémité plane pour pour constituer une surface d'appui à l'écrou de serrage (5d). 6. Self-bendable connecting rod according to Claim 4, characterized in that the supporting stop (5f) comprises a hole (59) formed in its center for the passage of cable (5a), a first end (5t) portion of a sphere to engage with the truncated cone profile (4d) of the last element (4) of the rod (3) and a second planar end for to form a bearing surface for the clamping nut (5d) .
  7. 7. Tige de liaison auto-cintrable suivant la revendication 1, caractérisée en ce que les extrémités (4 et 4d) des éléments (4), le tronc de cône (5e) de la butée (5b) et l'extrémité (5h) de la butée d'appui (5f) sont usinés de manière à obtenir un état de surface rugueux pour faciliter le contact entre eux afin d'obtenir une parfaite immobilisation de la tige (3) lors de la mise en tension du câble (5a). 7. Self-bendable connecting rod according to Claim 1, characterized in that the ends (4 and 4d) of the elements (4), the truncated cone (5e) of the abutment (5b) and the end (5h) of the supporting stop (5f) are machined so as to obtain a rough surface to facilitate contact between them in order to obtain a perfect immobilization of the rod (3) when the cable tensioning (5a) .
  8. 8. Tige de liaison auto-cintrable suivant la revendication 4, caractérisée en ce qu'elle comprend une butée d'appui (6) comportant un corps (6a) pour le sertissage au moyen d'une pince de l'extrémité libre du câble (5a) en vue de son immobilisation après sa mise en tension. 8. Rod self-bendable connection according to Claim 4, characterized in that it comprises a supporting stop (6) comprising a body (6a) for crimping by means of a clamp from the free end of the cable (5a) for its immobilization after its tensioning.
FR9401662A 1994-02-09 1994-02-09 Self-aligning rod for spinal osteosynthesis apparatus Pending FR2715825A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9401662A FR2715825A1 (en) 1994-02-09 1994-02-09 Self-aligning rod for spinal osteosynthesis apparatus

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Application Number Priority Date Filing Date Title
FR9401662A FR2715825A1 (en) 1994-02-09 1994-02-09 Self-aligning rod for spinal osteosynthesis apparatus

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US8998960B2 (en) 2004-11-10 2015-04-07 Roger P. Jackson Polyaxial bone screw with helically wound capture connection
US8998959B2 (en) 2009-06-15 2015-04-07 Roger P Jackson Polyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert
US9144444B2 (en) 2003-06-18 2015-09-29 Roger P Jackson Polyaxial bone anchor with helical capture connection, insert and dual locking assembly
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US9308027B2 (en) 2005-05-27 2016-04-12 Roger P Jackson Polyaxial bone screw with shank articulation pressure insert and method
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US9439683B2 (en) 2007-01-26 2016-09-13 Roger P Jackson Dynamic stabilization member with molded connection
US9451993B2 (en) 2014-01-09 2016-09-27 Roger P. Jackson Bi-radial pop-on cervical bone anchor
US9504496B2 (en) 2009-06-15 2016-11-29 Roger P. Jackson Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert
US9566092B2 (en) 2013-10-29 2017-02-14 Roger P. Jackson Cervical bone anchor with collet retainer and outer locking sleeve
US9597119B2 (en) 2014-06-04 2017-03-21 Roger P. Jackson Polyaxial bone anchor with polymer sleeve
US9636146B2 (en) 2012-01-10 2017-05-02 Roger P. Jackson Multi-start closures for open implants
US9662143B2 (en) 2004-02-27 2017-05-30 Roger P Jackson Dynamic fixation assemblies with inner core and outer coil-like member
US9668771B2 (en) 2009-06-15 2017-06-06 Roger P Jackson Soft stabilization assemblies with off-set connector
US9717533B2 (en) 2013-12-12 2017-08-01 Roger P. Jackson Bone anchor closure pivot-splay control flange form guide and advancement structure
US9907574B2 (en) 2009-06-15 2018-03-06 Roger P. Jackson Polyaxial bone anchors with pop-on shank, friction fit fully restrained retainer, insert and tool receiving features
US9918745B2 (en) 2009-06-15 2018-03-20 Roger P. Jackson Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet
US10058354B2 (en) 2013-01-28 2018-08-28 Roger P. Jackson Pivotal bone anchor assembly with frictional shank head seating surfaces
US10064658B2 (en) 2014-06-04 2018-09-04 Roger P. Jackson Polyaxial bone anchor with insert guides
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US6296644B1 (en) 1998-08-26 2001-10-02 Jean Saurat Spinal instrumentation system with articulated modules
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US8926670B2 (en) 2003-06-18 2015-01-06 Roger P. Jackson Polyaxial bone screw assembly
US9144444B2 (en) 2003-06-18 2015-09-29 Roger P Jackson Polyaxial bone anchor with helical capture connection, insert and dual locking assembly
US8936623B2 (en) 2003-06-18 2015-01-20 Roger P. Jackson Polyaxial bone screw assembly
US20110106167A1 (en) * 2003-09-24 2011-05-05 Tae-Ahn Jahng Adjustable spinal stabilization system
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US8968366B2 (en) 2003-09-24 2015-03-03 DePuy Synthes Products, LLC Method and apparatus for flexible fixation of a spine
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US9662143B2 (en) 2004-02-27 2017-05-30 Roger P Jackson Dynamic fixation assemblies with inner core and outer coil-like member
US9743957B2 (en) 2004-11-10 2017-08-29 Roger P. Jackson Polyaxial bone screw with shank articulation pressure insert and method
US8926672B2 (en) 2004-11-10 2015-01-06 Roger P. Jackson Splay control closure for open bone anchor
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US8529602B2 (en) * 2005-01-26 2013-09-10 Aesculap Ag & Co. Kg Self-contouring spinal rod
US9308027B2 (en) 2005-05-27 2016-04-12 Roger P Jackson Polyaxial bone screw with shank articulation pressure insert and method
US8221467B2 (en) 2005-11-18 2012-07-17 Life Spine, Inc. Dynamic spinal stabilization device and systems
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US8109975B2 (en) * 2007-01-30 2012-02-07 Warsaw Orthopedic, Inc. Collar bore configuration for dynamic spinal stabilization assembly
US8172879B2 (en) 2007-08-23 2012-05-08 Life Spine, Inc. Resilient spinal rod system with controllable angulation
EP2047815A1 (en) * 2007-10-01 2009-04-15 Chung-Chun Yeh A spinal fixation device having a flexible cable and jointed components received thereon
FR2924013A1 (en) * 2007-11-26 2009-05-29 Hassan Razian Deformation e.g. scoliosis, correcting system for vertebral column of living organism, has bar placed in flexible configuration for association position of bar sections and in rigid configuration for another association position of sections
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US8029548B2 (en) 2008-05-05 2011-10-04 Warsaw Orthopedic, Inc. Flexible spinal stabilization element and system
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US8992576B2 (en) 2008-12-17 2015-03-31 DePuy Synthes Products, LLC Posterior spine dynamic stabilizer
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US9168069B2 (en) 2009-06-15 2015-10-27 Roger P. Jackson Polyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer
US8998959B2 (en) 2009-06-15 2015-04-07 Roger P Jackson Polyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert
US9918745B2 (en) 2009-06-15 2018-03-20 Roger P. Jackson Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet
US9668771B2 (en) 2009-06-15 2017-06-06 Roger P Jackson Soft stabilization assemblies with off-set connector
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US8852239B2 (en) 2013-02-15 2014-10-07 Roger P Jackson Sagittal angle screw with integral shank and receiver
US9566092B2 (en) 2013-10-29 2017-02-14 Roger P. Jackson Cervical bone anchor with collet retainer and outer locking sleeve
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US10064658B2 (en) 2014-06-04 2018-09-04 Roger P. Jackson Polyaxial bone anchor with insert guides
US9597119B2 (en) 2014-06-04 2017-03-21 Roger P. Jackson Polyaxial bone anchor with polymer sleeve
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