FR2806615A1 - Vertebral fracture reducing apparatus has fixings shaped to receive cylindrical components holding linking rods - Google Patents

Vertebral fracture reducing apparatus has fixings shaped to receive cylindrical components holding linking rods Download PDF

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Publication number
FR2806615A1
FR2806615A1 FR0003584A FR0003584A FR2806615A1 FR 2806615 A1 FR2806615 A1 FR 2806615A1 FR 0003584 A FR0003584 A FR 0003584A FR 0003584 A FR0003584 A FR 0003584A FR 2806615 A1 FR2806615 A1 FR 2806615A1
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elements
cylindrical element
shaped
attachment
healthy
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French (fr)
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Pascal Aufaure
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CREMASCOLLI ORTHO S A
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CREMASCOLLI ORTHO S A
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Priority to FR0003584A priority Critical patent/FR2806615A1/en
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    • 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
    • A61B17/7034—Screws or hooks with U-shaped head or back through which longitudinal rods pass characterised by a lateral opening
    • 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
    • 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
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
    • 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
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8665—Nuts
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8695—Washers

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

The apparatus consists of at least one pair of fixings such as screws (1) or hooks designed to be fastened to healthy vertebrae above and below the fracture and connected by rods (10). Each fixing has a cavity (2) shaped to receive a cylindrical component (3) with end collars (6, 7) and a lengthwise slot (8) and holes (9) for the rods. The cylinder is clamped in the cavity by a plate (5) and locking nut (4) applying a pressure which holds the rods in place.

Description

La présente description concerne un dispositif de réduction de fractures vertébrales ayant une fonctionnalité améliorée. The present disclosure relates to a vertebral fracture reduction device having improved functionality.

Comme l'on sait, pour la réduction de fractures vertébrales, on utilise des systèmes de fixation de vertèbres placés en amont et en aval de la vertèbre concernée par la fracture, et ces systèmes de fixation comportent des vis qui sont vissées dans les vertèbres saines et sont reliées entre elles par des éléments en forme de hampe serrés entre le collet de la vis et la tête de la vis elle-même, de façon<B>à</B> comprimer la vertèbre fracturée. As is known, vertebral fixation systems placed upstream and downstream of the vertebra affected by the fracture are used for the reduction of vertebral fractures, and these fixation systems comprise screws which are screwed into the healthy vertebrae. and are interconnected by shaft-shaped members clamped between the neck of the screw and the head of the screw itself, so as to compress the fractured vertebra.

Toutefois, il arrive que, vu la grande rigidité des systèmes de fixation décrits dessus, la vertèbre concernée par la fracture, qui se trouve entre les deux vis de fixation vissée dans les vertèbres saines, s'avère être sensiblement libre, car la compression exerce uniquement sur les vertèbres sur lesquelles sont insérées les vis auxquelles sont ensuite reliés les éléments en forme de hampe. However, it happens that, considering the high rigidity of the fastening systems described above, the vertebra concerned by the fracture, which is between the two fastening screws screwed into the healthy vertebrae, proves to be substantially free, because compression exerts only on the vertebrae on which are inserted the screws to which are then connected the elements in the form of shaft.

Donc, il arrive que la vertèbre qui doit être ressoudée n'est pas directement sollicitée et que la guérison de la fracture s'avère être difficile, la vertèbre pouvant être affectée de résorption osseuse. Thus, it happens that the vertebra which is to be wound is not directly solicited and the healing of the fracture proves to be difficult, the vertebra may be affected by bone resorption.

Les systèmes de fixation de type connu ont donc pour inconvénient d'être d'une grande rigidité mais aussi quelque peu encombrants. Cet inconvénient est grave car espaces disponibles latéralement par rapport<B>à</B> la colonne vertébrale, pour la réduction de fractures vertébrales, sont réduits et le fait d'avoir des systèmes de fixation dont l'encombrement transversal est important ne facilite pas le travail du chirurgien qui doit accrocher ces systèmes de fixation aux vertèbres. Fastening systems of known type have the disadvantage of being of great rigidity but also somewhat bulky. This disadvantage is serious because spaces available laterally in relation to the vertebral column, for the reduction of vertebral fractures, are reduced and having fastening systems whose transverse bulk is important does not facilitate not the work of the surgeon who has to hang these fasteners to the vertebrae.

La fonction principale de la présente invention est de réaliser un dispositif de réduction de fractures vertébrales ayant une fonctionnalité améliorée qui permette d'exercer également la force de compression, au moins partiellement, sur la ou les vertèbres fracturées. The main function of the present invention is to provide a vertebral fracture reduction device having improved functionality that also allows the compressive force to be exerted, at least partially, on the fractured vertebra (s).

Dans le cadre de cette fonction, un but de la présente invention est de réaliser un dispositif de réduction de fractures vertébrales qui soit d'un encombrement transversal réduit par rapport<B>à</B> des dispositifs de type connu. In the context of this function, an object of the present invention is to provide a device for reducing vertebral fractures which is of reduced transverse size compared to devices of the known type.

Un autre but de la présente invention est de réaliser un dispositif de réduction de fractures vertébrales qui permette de modifier la flexibilité de la liaison entre les vis de fixation de façon<B>à</B> comprimer au moins partiellement la vertèbre concernée par la fracture. Un autre but de la présente invention, encore, est de réaliser un dispositif de réduction de fractures vertébrales qui soit d'un accrochage simple aux vertèbres du patient. Another object of the present invention is to provide a device for reducing vertebral fractures which makes it possible to modify the flexibility of the connection between the fixing screws so as to <B> at least partially compress the vertebra concerned by the fracture. Another object of the present invention, again, is to provide a device for reducing vertebral fractures which is a simple attachment to the vertebrae of the patient.

Un autre but, qui n'est pas le dernier, de la présente invention est de réaliser un dispositif de réduction fractures vertébrales qui soit d'une grande fiabilité, d'une réalisation relativement facile et<B>à</B> des coûts concurrentiels. Another goal, which is not the last, of the present invention is to provide a device for reducing vertebral fractures which is of great reliability, of a relatively easy realization and costs of <B> to </ B> competitive.

Cette fonction, ainsi que ces buts et d'autres qui apparaîtront mieux par la suite, est obtenue grâce<B>à</B> dispositif de réduction de fractures vertébrales comprenant au moins une paire d'éléments d'accrochage destinés<B>à</B> être fixés sur des vertèbres saines, en amont et en aval de la vertèbres fracturées, des éléments de liaison en forme de hampe étant prévus pour relier au moins les deux éléments d'accrochage entre eux, ledit dispositif étant caractérisee par le fait que chacun des éléments d'accrochage présente un emplacement destiné<B>à</B> recevoir un élément cylindrique apte<B>à</B> recevoir au moins l'un des éléments en forme de hampe reliant au moins deux éléments d'accrochage entre eux. This function, as well as these and other objects which will appear better later, is achieved by vertebral fracture reduction device comprising at least one pair of shackles intended for <B> to be attached to healthy vertebrae, upstream and downstream of the fractured vertebrae, the shaft-shaped connecting elements being provided for connecting at least the two hooking elements to each other, said device being characterized by the fact that each of the attachment elements has a location intended to receive a cylindrical element adapted to receive at least one of the shaft-shaped elements connecting at least two hanging elements between them.

D'autres caractéristiques et avantages de l'invention apparaîtront mieux lors de la description des formes de réalisation choisies, mais non exclusives, du dispositif de fixation selon la présente invention, illustrée<B>à</B> titre d'exemple mais non limitatif, dans les dessins joints où<B>:</B> <B>-</B> la figure est une vue en perspective, éclatée, du dispositif de fixation selon la présente invention, conformément<B>à</B> l'une de ses formes de réalisation, <B>-</B> la figure 2 une vue en perspective du dispositif de fixation de la figure <B>1,</B> illustré en situation de fonctionnement, <B>-</B> la figure<B>3</B> une vue en perspective d'une seconde forme de réalisation d'une portion du dispositif selon la présente invention, et <B>-</B> la figure 4 une vue en perspective d'une troisième forme de réalisation de la présente invention. Other features and advantages of the invention will become more apparent in the description of the embodiments chosen, but not exclusive, of the fixing device according to the present invention, illustrated as an example but not in the accompanying drawings, where: <B>: </ B> <B> - </ B> the figure is an exploded perspective view of the fastening device according to the present invention, in accordance with B / B one of its embodiments, FIG. 2 is a perspective view of the fixing device of FIG. 1, illustrated in an operating situation, <B> - <B> 3 </ B> a perspective view of a second embodiment of a portion of the device according to the present invention, and <B> - </ B> Figure 4 a perspective view of a third embodiment of the present invention.

En se référant aux figures susmentionnées, le dispositif de réduction de fractures vertébrales selon la présente invention comprend des éléments de fixation destinés<B>à</B> être accrochés<B>à</B> des vertèbres saines du patient. En particulier, les moyens de fixation peuvent être constitués, selon un premier mode de réalisation de l'invention, d'une vis-taraud <B>1</B> destinée<B>à</B> être insérée dans un trou défini dans une vertèbre saine. Le dispositif selon l'invention prévoit donc au moins une paire de vis fixées amont et en aval de la vertèbre fracturée de façon<B>à</B> mettre la vertèbre fracturée en compression. Referring to the above-mentioned figures, the vertebral fracture reduction device according to the present invention comprises fasteners intended to be attached to healthy vertebrae of the patient. In particular, the fixing means can be constituted, according to a first embodiment of the invention, a screw-tap <B> 1 </ B> intended <B> to </ B> be inserted into a hole defined in a healthy vertebra. The device according to the invention therefore provides at least one pair of screws fixed upstream and downstream of the vertebra fractured so as to put the fractured vertebra in compression.

vis-taraud <B>1</B> comporte un logement 2 défini par un creux dans lequel vient se loger un 'lément cylindrique<B>3</B> qui est maintenu dans l'emplacement 2 un écrou de blocage 4 muni d'un collet<B>5</B> qui est destiné<B>à</B> prendre appui contre l'élément cylindrique <B>3,</B> en l'empêchant donc de sortir. L'écrou 4 peut comprendre une rondelle (non représentée) pivotante par rapport<B>à</B> cet écrou et qui<B>y</B> est accrochée.  screw tap <B> 1 </ B> comprises a housing 2 defined by a hollow in which is housed a 'cylindrical element <B> 3 </ B> which is maintained in the slot 2 a locking nut 4 provided of a collar <B> 5 </ B> which is intended <B> to </ B> to bear against the cylindrical element <B> 3, </ B> thus preventing it from going out. The nut 4 may comprise a washer (not shown) pivoting relative to this nut and which is fastened.

L'élément cylindrique<B>3</B> est muni<B>à</B> ses extrémités d'une paire collets<B>6</B> et<B>7</B> qui empêchent l'élément cylindrique<B>3</B> de sortir du logement 2 de la vis-taraud <B>1.</B> The cylindrical element <B> 3 </ B> has <B> at </ B> its ends a pair of collars <B> 6 </ B> and <B> 7 </ B> that prevent the cylindrical element <B> 3 </ B> out of housing 2 of the screw-tap <B> 1. </ B>

Dans une première forme de réalisation, l'élément cylindrique<B>3</B> comprend au moins une entaille<B>8</B> qui s'étend au moins partiellement le long de sa surface latérale, parallèlement<B>à</B> son axe et dont la fonction est de permettre que l'élément cylindrique<B>3</B> soit flottant. In a first embodiment, the cylindrical element <B> 3 </ B> comprises at least one notch <B> 8 </ B> which extends at least partially along its lateral surface, in parallel <B> to its axis and whose function is to allow the cylindrical element <B> 3 </ B> to be floating.

Dans la forme de réalisation illustrée dans la figure<B>1</B> et la figure 2, cette entaille<B>8</B> s'étend d'une extrémité<B>à</B> l'autre de l'élément cylindrique<B>3,</B> en concernant également les collets<B>6</B> et<B>7.</B> L'élément cylindrique<B>3</B> comporte intérieurement un logement<B>9</B> apte<B>à</B> recevoir au moins un élément en forme de hampe<B>10,</B> et de préférence une paire d'éléments en forme de hampe<B>10,</B> comme cela est illustré sur figure<B>1</B> et sur la figure 2 ou bien un groupe de trois éléments en forme de hampe<B>10</B> comme cela est illustré sur la figure<B>3.</B> In the embodiment shown in Figure <B> 1 </ B> and Figure 2, this notch <B> 8 </ B> extends from one <B> end to </ B> the other of the cylindrical element <B> 3, </ B> also concerning the collars <B> 6 </ B> and <B> 7. </ B> The cylindrical element <B> 3 </ B> comprises internally a slot <B> 9 </ B> able to receive at least one shaft-shaped element <B> 10, </ B> and preferably a pair of shaft-shaped elements <B> 10, </ B> as shown in figure <B> 1 </ B> and in Figure 2 or a group of three shaft-shaped elements <B> 10 </ B> as is shown in Figure <B> 3. </ B>

L'entaille<B>8</B> permet en outre de bloquer les éléments en forme hampe<B>10</B> quand l'écrou de blocage 4 est serré. The notch <B> 8 </ B> also allows the shaft-shaped elements <B> 10 </ B> to be locked when the locknut 4 is tightened.

Dans le cas de la figure<B>3</B> le logement<B>9</B> est de forme sensiblement triangulaire les éléments en forme de hampe<B>10</B> sont insérés dans ce logement. Dans ce cas il<B>y</B> a trois entailles<B>8</B> qui ne s'étendent que partiellement le long de surface latérale de l'élément cylindrique<B>3,</B> parallèlement<B>à</B> l'axe de l'élément cylindrique. In the case of Figure <B> 3 </ B> housing <B> 9 </ B> is of substantially triangular shape the shaft-shaped elements <B> 10 </ B> are inserted into this housing. In this case it <B> y </ B> has three notches <B> 8 </ B> which extend only partially along the lateral surface of the cylindrical element <B> 3, </ B> in parallel <B> to </ B> the axis of the cylindrical element.

dispositif de réduction de fractures selon l'invention permet donc de relier entre elles deux vis-tarauds <B>1</B> par les éléments en forme de hampe<B>10</B> sont insérés dans les éléments cylindriques<B>3</B> qui sont chacun logés dans l'emplacement 2 de la vis- taraud <B>1</B> respective. fracture reduction device according to the invention allows to connect between two screw-taps <B> 1 </ B> by the shaft-shaped elements <B> 10 </ B> are inserted in the cylindrical elements <B > 3 </ B> which are each housed in slot 2 of the respective <B> 1 </ B> screwdriver.

liaison entre les deux vis-tarauds <B>1,</B> assurée par les éléments en forme de hampe<B>10,</B> s'avère être beaucoup plus souple que la liaison actuellement utilisée entre des vis-tarauds, en vertu du fait qu'il est possible de choisir le nombre d'éléments forme de hampe<B>10</B> pour relier entre elles les vis-tarauds <B>1</B> et donc modifier la souplesse de la liaison. connection between the two screw-taps <B> 1, </ B> provided by the shaft-shaped elements <B> 10, </ B> proves to be much more flexible than the currently used connection between screw-taps , by virtue of the fact that it is possible to choose the number of stem-shaped elements <B> 10 </ B> to interconnect the screw-taps <B> 1 </ B> and thus to modify the flexibility of the link.

Le fait la liaison ne soit pas totalement rigide comme cela se passe dans des dispositifs de 'duction de fractures de type connu, permet d'appliquer la force de compression non seulement sur les vertèbres sur lesquelles sont fixées directement les vis-tarauds <B>1</B> mais aussi sur les vertèbres intermédiaires et donc sur la ou les vertèbres fracturées, justement en vertu de la souplesse conférée par la présence de plusieurs éléments en forme de hampe<B>10.</B> The fact that the connection is not completely rigid as is the case in known fracture fracture devices, makes it possible to apply the compressive force not only to the vertebrae on which the screw-taps <B> are directly fixed. 1 </ B> but also on the intermediate vertebrae and therefore on the fractured vertebrae, precisely because of the flexibility conferred by the presence of several rod-shaped elements <B> 10. </ B>

On a, dans la pratique, constaté que le dispositif de réduction de fractures vertébrales selon l'invention remplit pleinement le rôle qui lui a été fixé car il permet de transmettre au moins partiellement la force de compression exercée par les<B>*</B> tarauds reliées entre elles les éléments en forme de hampe, également aux vertèbres dans lesquelles les vis sont pas directement vissées, en vertu de la souplesse de liaison entre les deux vis qui sont vissées en amont et en aval de la vertèbre fracturée. In practice, it has been found that the device for reducing vertebral fractures according to the invention fully fulfills the role that has been fixed to it since it makes it possible to transmit at least partially the compressive force exerted by the <B> * </ B> taps connected together the shaft-shaped elements, also vertebrae in which the screws are not directly screwed, by virtue of the flexibility of connection between the two screws which are screwed upstream and downstream of the fractured vertebra.

Le dispositif ainsi conçu est susceptible de nombreuses modifications et variantes qui entrent toutes dans le cadre du concept de l'invention<B>;</B> en outre tous les composants pourront être remplacés par d'autres éléments techniquement équivalents. The device thus conceived is capable of numerous modifications and variants which all fall within the scope of the concept of the invention; furthermore, all the components may be replaced by other technically equivalent elements.

Ainsi, par exemple, comme cela est illustré par la figure 4, les éléments de fixation peuvent être constitués par un crochet<B>15</B> qui permet de s'accrocher<B>à</B> une vertèbre saine sans devoir recourir au vissage d'une vis dans la vertèbre. Thus, for example, as illustrated in FIG. 4, the fastening elements may be constituted by a hook <B> 15 </ B> which makes it possible to hold <B> at </ B> a healthy vertebra without have to screw a screw into the vertebra.

La portion supérieure du crochet<B>15</B> présente, de même que la vis de fixation <B>1,</B> un écrou de blocage 4 et un collet<B>5</B> destiné<B>à</B> se placer contre l'élément cylindrique<B>3,</B> en empêchant qu'il ne sorte. The top portion of the <B> 15 </ B> hook has, together with the <B> 1 fixing screw, <4> a locknut 4 and a <B> 5 </ B> collar intended for <B > to </ B> stand against the cylindrical element <B> 3, </ B> preventing it from coming out.

Dans la pratique, les matériaux employés,<B>à</B> condition qu'ils soient compatibles avec l'utilisation spécifique, ainsi que les dimensions, varient en fonction des besoins et de l'état de la technique.In practice, the materials used, <B> to </ B> provided that they are compatible with the specific use, as well as the dimensions, vary according to the needs and state of the art.

Claims (1)

<B><U>REVENDICATIONS</U></B> <B>1.</B> Dispositif de réduction de fractures vertébrales, comprenant au moins une paire d'éléments d'accrochage destinés<B>à</B> être fixés dans des vertèbres saines en amont et en aval de la ou des vertèbres fracturées, des éléments de liaison en forme de hampe étant prévus pour relier au moins les deux éléments d'accrochage entre eux, ledit dispositif étant caractérisé par le fait que chacun des éléments d'accrochage<B>(1<I>; 15)</I></B> présente un emplacement (2) destiné<B>à</B> recevoir un élément cylindrique<B>(3)</B> apte<B>à</B> recevoir au moins un desdits éléments en forme de hampe<B>(10)</B> servant<B>à</B> relier au moins deux éléments d'accrochage entre eux. 2. Dispositif selon la revendication<B>1,</B> caractérisé par le fait que l'élément cylindrique<B>(3)</B> logé dans l'emplacement (2) de l'élément d'accrochage est maintenu par un écrou de blocage (4) vissé<B>à</B> l'extrémité proximale de l'élément d'accrochage, l'opposé de l'extrémité qui est destinée<B>à</B> être fixée<B>à</B> la vertèbre saine. <B>3.</B> Dispositif selon la revendication 2, caractérisé par le fait que l'élément cylindrique<B>(3)</B> est doté<B>à</B> son extrémité d'une paire de collets<B>(6, 7)</B> aptes<B>à</B> empêcher l'élément cylindrique ne sorte de l'emplacement défini dans l'élément d'accrochage. 4. Dispositif selon l'une quelconque des revendications précédentes caractérise par le fait que l'élément cylindrique<B>(3)</B> comporte, sur sa surface latérale, au moins entaille<B>(8)</B> qui s'étend au moins partiellement sur la longueur de l'élément cylindrique parallèlement<B>à</B> l'axe dudit élément cylindrique. <B>5.</B> Dispositif selon l'une quelconque des revendications précédentes, caractérise par le fait que l'élément cylindrique<B>(3)</B> reçoit une paire d'éléments en forme de hampe<B>(10)</B> qui relient au moins deux éléments d'accrochage entre eux. <B>6.</B> Dispositif selon l'une quelconque des revendications précédentes, caractérise par le fait que l'élément cylindrique<B>(3)</B> reçoit trois éléments en forme hampe<B>(10)</B> pour relier au moins deux éléments d'accrochage entre eux. <B>7.</B> Dispositif selon l'une quelconque des revendications précédentes caractérisé par le fait que l'écrou de blocage (4) dudit élément cylindrique<B>(3)</B> dans le logement de l'élément d'accrochage est doté d'une rondelle pivotante par rapport<B>à</B> cet écrou et qui<B>y</B> est accrochée. <B>8.</B> Dispositif selon la revendication<B>1,</B> caractérisé par le fait que chacun des éléments d'accrochage comprend une vis-taraud apte<B>à</B> être vissée dans une vertèbre saine. <B>9.</B> Dispositif selon la revendication<B>L</B> caractérisé par le fait que chacun des éléments d'accrochage comprend un crochet<B>(15)</B> destiné<B>à</B> être accroché<B>à</B> une vertèbre saine.<B> <U> CLAIMS </ U> <B> 1. </ B> Device for reducing vertebral fractures, comprising at least one pair of attachment elements intended for <B> to </ B> > to be fixed in healthy vertebrae upstream and downstream of the fractured vertebrae, with rod-shaped connecting elements being provided for connecting at least the two fastening elements to one another, said device being characterized by the fact that each of the attachment elements <B> (1 <I>; 15) </ I> </ B> has a location (2) for receiving a cylindrical element <B> (3) <B> to </ B> receive at least one of said stem-shaped elements <B> (10) </ B> serving <B> to </ B> connect at least two snap elements between them. 2. Device according to claim <B> 1, </ B> characterized in that the cylindrical element <B> (3) </ B> housed in the location (2) of the fastening element is held by a locking nut (4) screwed <B> to </ B> the proximal end of the attachment element, the opposite of the end which is intended <B> to </ B> to be fixed <B> to </ B> the healthy vertebra. <B> 3. </ B> Device according to claim 2, characterized in that the cylindrical element <B> (3) </ B> is equipped <B> at </ B> its end of a pair of collars <B> (6, 7) <B> to </ B> prevent the cylindrical element from leaving the location defined in the attachment element. 4. Device according to any one of the preceding claims characterized in that the cylindrical element <B> (3) </ B> comprises, on its lateral surface, at least notch <B> (8) </ B> which extends at least partially along the length of the cylindrical element parallel to the axis of said cylindrical element. <B> 5. </ B> Device according to any one of the preceding claims, characterized in that the cylindrical element <B> (3) </ B> receives a pair of rod-shaped elements <B > (10) </ B> which connect at least two latching elements to each other. <B> 6. </ B> Device according to any one of the preceding claims, characterized in that the cylindrical element <B> (3) </ B> receives three shaft-shaped elements <B> (10) </ B> to connect at least two snap elements between them. <B> 7. </ B> Device according to any preceding claim characterized in that the locking nut (4) of said cylindrical element <B> (3) </ B> in the housing of the hooking element has a pivoting washer relative to this nut and which is hooked. <B> 8. </ B> Device according to claim <B> 1, </ B> characterized in that each of the attachment elements comprises a screw-tap suitable <B> to </ B> be screwed into a healthy vertebra. <B> 9. </ B> Device according to claim <B> L </ B> characterized in that each of the attachment elements comprises a hook <B> (15) </ B> for <B> to </ B> be hooked <B> to a healthy vertebra.
FR0003584A 2000-03-21 2000-03-21 Vertebral fracture reducing apparatus has fixings shaped to receive cylindrical components holding linking rods Pending FR2806615A1 (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002085217A2 (en) * 2001-04-19 2002-10-31 Spineology, Inc. Stacked intermedular rods for spinal fixation
WO2004096066A2 (en) * 2003-04-25 2004-11-11 Kitchen Michael S Spinal curvature correction device
EP1681982A2 (en) * 2003-10-14 2006-07-26 Thomas R. Keyer Spinal fixation hooks and method of spinal fixation
WO2006079531A1 (en) * 2005-01-26 2006-08-03 Aesculap Ag & Co. Kg Self-contouring spinal rod
EP1862135A1 (en) * 2006-05-29 2007-12-05 Stryker Trauma SA Clamping element and insert therefor
WO2008061802A1 (en) * 2006-11-24 2008-05-29 Peter Brehm Orthopaedic securing device and device for correcting a spinal column deformation
EP2055251A1 (en) * 2005-12-23 2009-05-06 BIEDERMANN MOTECH GmbH Bone anchoring element
US7556639B2 (en) * 2005-03-03 2009-07-07 Accelerated Innovation, Llc Methods and apparatus for vertebral stabilization using sleeved springs
US8048129B2 (en) 2007-08-15 2011-11-01 Zimmer Spine, Inc. MIS crosslink apparatus and methods for spinal implant
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
US8414614B2 (en) 2005-10-22 2013-04-09 Depuy International Ltd Implant kit for supporting a spinal column
US8425563B2 (en) 2006-01-13 2013-04-23 Depuy International Ltd. Spinal rod support kit
EP3100692A1 (en) * 2015-06-04 2016-12-07 Zimmer Spine Spinal dynamic stabilization system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411259A (en) * 1980-02-04 1983-10-25 Drummond Denis S Apparatus for engaging a hook assembly to a spinal column
US4433676A (en) * 1981-04-06 1984-02-28 Bobechko Kevin A Self-adjusting spinal scoliosis fusion hook
US5010879A (en) * 1989-03-31 1991-04-30 Tanaka Medical Instrument Manufacturing Co. Device for correcting spinal deformities
WO1994010929A1 (en) * 1992-11-18 1994-05-26 Eurosurgical Rod attachment device for spinal orthopaedics
FR2720923A1 (en) * 1994-06-10 1995-12-15 Sra Sarl Osteosynthesis screw for vertical column implant
GB2294394A (en) * 1994-10-25 1996-05-01 Jeffrey Keith Middleton Spinal fixation apparatus forming a supportive cradle
FR2743290A1 (en) * 1996-01-10 1997-07-11 Edouard Brice Surgical vertebral stabiliser fixator
WO1999056652A1 (en) * 1998-04-30 1999-11-11 Dimso (Distribution Medicale Du Sud-Ouest) Backbone osteosynthesis system with collar and lock

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411259A (en) * 1980-02-04 1983-10-25 Drummond Denis S Apparatus for engaging a hook assembly to a spinal column
US4433676A (en) * 1981-04-06 1984-02-28 Bobechko Kevin A Self-adjusting spinal scoliosis fusion hook
US5010879A (en) * 1989-03-31 1991-04-30 Tanaka Medical Instrument Manufacturing Co. Device for correcting spinal deformities
WO1994010929A1 (en) * 1992-11-18 1994-05-26 Eurosurgical Rod attachment device for spinal orthopaedics
FR2720923A1 (en) * 1994-06-10 1995-12-15 Sra Sarl Osteosynthesis screw for vertical column implant
GB2294394A (en) * 1994-10-25 1996-05-01 Jeffrey Keith Middleton Spinal fixation apparatus forming a supportive cradle
FR2743290A1 (en) * 1996-01-10 1997-07-11 Edouard Brice Surgical vertebral stabiliser fixator
WO1999056652A1 (en) * 1998-04-30 1999-11-11 Dimso (Distribution Medicale Du Sud-Ouest) Backbone osteosynthesis system with collar and lock

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002085217A3 (en) * 2001-04-19 2003-02-13 Spineology Inc Stacked intermedular rods for spinal fixation
US6706044B2 (en) 2001-04-19 2004-03-16 Spineology, Inc. Stacked intermedular rods for spinal fixation
WO2002085217A2 (en) * 2001-04-19 2002-10-31 Spineology, Inc. Stacked intermedular rods for spinal fixation
WO2004096066A2 (en) * 2003-04-25 2004-11-11 Kitchen Michael S Spinal curvature correction device
WO2004096066A3 (en) * 2003-04-25 2005-03-24 Michael S Kitchen Spinal curvature correction device
US7604653B2 (en) 2003-04-25 2009-10-20 Kitchen Michael S Spinal curvature correction device
EP1681982A4 (en) * 2003-10-14 2008-08-13 Synthes Gmbh Spinal fixation hooks and method of spinal fixation
EP1681982A2 (en) * 2003-10-14 2006-07-26 Thomas R. Keyer Spinal fixation hooks and method of spinal fixation
WO2006079531A1 (en) * 2005-01-26 2006-08-03 Aesculap Ag & Co. Kg Self-contouring spinal rod
US8529602B2 (en) 2005-01-26 2013-09-10 Aesculap Ag & Co. Kg Self-contouring spinal rod
US7556639B2 (en) * 2005-03-03 2009-07-07 Accelerated Innovation, Llc Methods and apparatus for vertebral stabilization using sleeved springs
US8414614B2 (en) 2005-10-22 2013-04-09 Depuy International Ltd Implant kit for supporting a spinal column
US8979902B2 (en) 2005-12-23 2015-03-17 Biedermann Technologies Gmbh & Co. Kg Dynamic stabilization device for bones or vertebrae
EP2055251A1 (en) * 2005-12-23 2009-05-06 BIEDERMANN MOTECH GmbH Bone anchoring element
US8192468B2 (en) 2005-12-23 2012-06-05 Biedermann Technologies Gmbh & Co. Kg Dynamic stabilization device for bones or vertebrae
CN1985771B (en) * 2005-12-23 2013-10-02 比德尔曼技术有限责任两合公司 Dynamic stabilization device for bones or vertebrae
US8425563B2 (en) 2006-01-13 2013-04-23 Depuy International Ltd. Spinal rod support kit
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
EP1862135A1 (en) * 2006-05-29 2007-12-05 Stryker Trauma SA Clamping element and insert therefor
US8444643B2 (en) 2006-05-29 2013-05-21 Stryker Trauma Sa Clamping element and insert therefor
WO2007137443A1 (en) * 2006-05-29 2007-12-06 Stryker Trauma Sa Clamping element and insert therefor
WO2008061802A1 (en) * 2006-11-24 2008-05-29 Peter Brehm Orthopaedic securing device and device for correcting a spinal column deformation
US8608780B2 (en) 2007-08-15 2013-12-17 Zimmer Spine, Inc. MIS crosslink apparatus and methods for spinal implant
US8048129B2 (en) 2007-08-15 2011-11-01 Zimmer Spine, Inc. MIS crosslink apparatus and methods for spinal implant
EP3100692A1 (en) * 2015-06-04 2016-12-07 Zimmer Spine Spinal dynamic stabilization system
EP3100693A1 (en) * 2015-06-04 2016-12-07 Zimmer Spine Dynamic stabilization system
US10098670B2 (en) 2015-06-04 2018-10-16 Zimmer Spine S.A.S. Dynamic stabilization system

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