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FR2731643A1 - ANGULAR SCREWDRIVER DEVICE FOR SCREWING IN AND SCREWING DIFFICULT ACCESSIBLE SCREWS, PARTICULARLY IN THE SURGICAL FIELD - Google Patents

ANGULAR SCREWDRIVER DEVICE FOR SCREWING IN AND SCREWING DIFFICULT ACCESSIBLE SCREWS, PARTICULARLY IN THE SURGICAL FIELD
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Publication number
FR2731643A1
FR2731643A1FR9503307AFR9503307AFR2731643A1FR 2731643 A1FR2731643 A1FR 2731643A1FR 9503307 AFR9503307 AFR 9503307AFR 9503307 AFR9503307 AFR 9503307AFR 2731643 A1FR2731643 A1FR 2731643A1
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France
Prior art keywords
tube
screwing
shell
sleeve
bent
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FR9503307A
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French (fr)
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JBS SA
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JBS SA
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Priority to FR9503307ApriorityCriticalpatent/FR2731643A1/en
Publication of FR2731643A1publicationCriticalpatent/FR2731643A1/en
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Abstract

Translated fromFrench

Dispositif de tournevis angulaire permettant le vissage et le dévissage de vis difficilement accessibles, notamment dans le domaine chirurgical. Il comprend un tube (2) dont une extrémité (20) est coudée, à l'intérieur duquel est introduit un câble (4) aux extrémités duquel sont sertis d'une part, du côté coudé (20) du tube (2), un moyen (21) de préhension d'un embout de vissage, et d'autre part, à l'autre extrémité (40), une garniture (41) de section transversale non ronde susceptible de passer dans ledit tube (2), l'extrémité non coudée (22) dudit tube (2) et ladite garniture (41) étant insérées dans une coque (3) réalisée en deux parties (30) assemblables, dans laquelle peut tourner axialement librement ledit tube (2) mais pas ladite garniture (41), cette dernière étant maintenue dans une cavité (32) de forme complémentaire, ladite coque (3) étant elle-même enveloppée d'un manchon (10) qui lui est solidarisable.Angular screwdriver device allowing the tightening and unscrewing of screws that are difficult to access, especially in the surgical field. It comprises a tube (2), one end (20) of which is bent, inside which is introduced a cable (4) at the ends of which are crimped on the one hand, on the bent side (20) of the tube (2), means (21) for gripping a screw bit, and on the other hand, at the other end (40), a gasket (41) of non-round cross section capable of passing through said tube (2), l the non-bent end (22) of said tube (2) and said gasket (41) being inserted into a shell (3) made of two parts (30) which can be assembled, in which said tube (2) can freely rotate axially but not said gasket (41), the latter being held in a cavity (32) of complementary shape, said shell (3) itself being enveloped by a sleeve (10) which is secured thereto.

Description

Translated fromFrench

La présente invention a pour objet un dispositif de tournevis angulaire permettant le vissage et le dévissage de vis difficilement accessibles, notamment dans le domaine chirurgical. The subject of the present invention is an angular screwdriver device allowing the screwing and unscrewing of screws which are difficult to access, in particular in the surgical field.

Dans les techniques chirurgicales de pose d'une prothèse, de consolidation par pose d'une plaque d'ostéosynthèse, ou autres techniques, on utilise des vis destinées à être vissées dans la matière osseuse. In the surgical techniques for placing a prosthesis, for consolidation by placing an osteosynthesis plate, or other techniques, screws are used which are intended to be screwed into the bone material.

De même, notamment dans les techniques de traitement du rachis, certaines pièces métalliques sont solidarisées entre elies au moyen de vls. Likewise, in particular in the techniques for treating the spine, certain metal parts are joined together between them by means of vls.

Or, la plupart du temps, selon l appareil à solidariser, les vis sont à implanter selon des axes différents, en sorte que certaines têtes de vis ne sont pas aisément accessibles, car il ne suffit pas d'engager l'outil de vissage dans l'empreinte de la vis, mais il faut également pouvoir appliquer un mouvement de rotation. However, most of the time, depending on the device to be joined, the screws are to be implanted along different axes, so that certain screw heads are not easily accessible, since it is not enough to engage the screwing tool in the impression of the screw, but it must also be possible to apply a rotational movement.

Il est ainsi parfois nécessaire de déplacer le patient au cours de l'intervention, ce qui peut avoir de graves conséquences pour lui, notamment, par exemple, dans le cas de la pose d'un implant pour ostéosynthèse rachidienne dorso-lombaire antérieure. It is thus sometimes necessary to move the patient during the intervention, which can have serious consequences for him, in particular, for example, in the case of the installation of an implant for anterior dorso-lumbar spinal osteosynthesis.

On connaît déjà des dispositifs de tournevis angulaires ou flexibles destinés à des usages autres que chirurgicaux, mais qui présentent l'inconvénient de ne pas être entièrement démontables aisément en vue d'être nettoyés et stérilisés. There are already known angular or flexible screwdriver devices intended for uses other than surgical, but which have the drawback of not being entirely easily removable in order to be cleaned and sterilized.

La présente invention a pour but de remédier à cet inconvénient en proposant un dispositif de tournevis angulaire qui autorise un accès aisé à des vis difficilement accessibles par des moyens classiques, et qui de plus est facilement et entièrement démontable pour en permettre le nettoyage et la stérilisation en vue de sa réutilisation. The object of the present invention is to remedy this drawback by proposing an angular screwdriver device which allows easy access to screws which are difficult to access by conventional means, and which moreover is easily and entirely removable to allow cleaning and sterilization thereof. for reuse.

Le dispositif de tournevis angulaire selon l'invention se caractérise essentieiiement en ce qu'il comprend un tube dont une extrémité est coudée, à l'intérieur duquel est introduit un câble aux extrémités duquel sont sertis d'une part, du coté coudé du tube, un moyen de préhension d'un embout de vissage, et d'autre part, à l'autre extrémité, une garniture de section transversale non ronde susceptible de passer dans ledit tube, et en ce que l'extrémité non coudée dudit tube et ladite garniture sont insérées dans une coque, réalisée en deux parties assemblables, dans laquelle peut tourner librement, axialement, ledit tube mais pas ladite garniture, cette dernière étant maintenue dans une cavité de forme complémentaire, ladite coque étant elle-méme enveloppée d'un manchon qui lui est solidarisable. The angular screwdriver device according to the invention is essentially characterized in that it comprises a tube of which one end is bent, inside which a cable is introduced at the ends of which are crimped on the one hand, on the bent side of the tube , a means for gripping a screwdriver bit, and on the other hand, at the other end, a non-round cross section lining capable of passing through said tube, and in that the non-bent end of said tube and said lining are inserted in a shell, produced in two assemblable parts, in which said tube can rotate freely, axially, but not said lining, the latter being held in a cavity of complementary shape, said shell itself being wrapped in a sleeve which can be secured to it.

L'utilisation d'un dispositif de tournevis selon l'invention est réalisée de la manière suivante : un embout de vissage est fixé à I'extrémité du tube sur le moyen de blocage, puis cet embout est accouplé à la tête de la vis, tandis que le chirurgien maintient l'embout appliqué contre la vis en tenant le tube d'une main, et de l'autre main fait tourner le manchon, la rotation étant transmise à l'embout, par i'intermédiaire successivement de la coque, de la garniture sertie et du câble
Dans le domaine chirurgical le vissage dans la matière osseuse ne nécessite pas un couple important, ce qui n'est pas le cas du dévissage, en sorte que le câble peut être avantageusement un faisceau de fils torsadés dont le sens de torsion est tel que le dévissage resserre lesdits fils et inversement, le câble faisant ainsi office de limiteur de couple.
The use of a screwdriver device according to the invention is carried out in the following manner: a screwing bit is fixed to the end of the tube on the locking means, then this bit is coupled to the head of the screw, while the surgeon maintains the endpiece applied against the screw while holding the tube with one hand, and with the other hand rotates the sleeve, the rotation being transmitted to the endpiece, successively through the shell, of the crimp and the cable
In the surgical field, screwing into the bone material does not require a significant torque, which is not the case with unscrewing, so that the cable can advantageously be a bundle of twisted wires whose direction of twist is such that the unscrewing tightens said wires and vice versa, the cable thus acting as a torque limiter.

Les avantages et les caractéristiques de la présente invention ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente un mode de réalisation non limitatif. The advantages and characteristics of the present invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents a non-limiting embodiment thereof.

Dans ie dessin annexé
- la figure 1 représente une vue en plan d'un dispositif selon l'invention.
In the attached drawing
- Figure 1 shows a plan view of a device according to the invention.

- la figure 2 représente une vue partielle en coupe longitudinale du même dispositif. - Figure 2 shows a partial view in longitudinal section of the same device.

- la figure 3 représente une vue partielle en perspective et en éclaté du même dispositif. - Figure 3 shows a partial perspective and exploded view of the same device.

Si on se réfère à la figure 1 on peut voir qu'un dispositif de tournevis selon l lnvention comporte un manche 1 prolonge d'un tube 2 dont la partie extrême 20 opposée à celle solidarisée au manche 1, est coudée et comporte à son extrémité un porte-embout 21 de type connu. Referring to FIG. 1, it can be seen that a screwdriver device according to the invention comprises a handle 1 extending from a tube 2, the end part 20 opposite to that secured to the handle 1, is bent and has at its end a bit holder 21 of known type.

Si on se réfère maintenant aux figures 2 et 3 on peut voir que le tube 2 renferme un câble 4 dont une extrémité, non visible sur ces figures, est solidarisée au porte-embout 21, l'autre extrémite 40 etant sertie d'une garniture 41 de section transversale carrée et de dimensions permettant son passage à l'intérieur du tube 2. If we now refer to Figures 2 and 3 we can see that the tube 2 contains a cable 4 whose one end, not visible in these figures, is secured to the bit holder 21, the other end 40 being set with a gasket 41 of square cross section and of dimensions allowing its passage inside the tube 2.

Le manche l comprend un manchon 10 renfermant une coque 3 issue du rapprochement de deux demi-coques identiques 30 autour de l'extrémité 22 du tube 2 et de la garniture 41, les demi-coques 30 comportant chacune à cet effet une cavité axiale demi-cylindrique 31 destinée à recevoir l'extrémité 23 du tube 2, et une cavité 32 adaptée à recevoir la garniture 41, les deux cavités 31 et 32 étant reliées par un évidement demi-cylindrique 33 destiné à recevoir le câble 4 pour sa partie débordant de l'extrémité 23 du tube 2, les dimensions de l'évidement 33 ne permettant pas le passage de la garniture 4i. The handle l comprises a sleeve 10 containing a shell 3 resulting from the bringing together of two identical half-shells 30 around the end 22 of the tube 2 and of the lining 41, the half-shells 30 each comprising for this purpose a half axial cavity -cylindrical 31 intended to receive the end 23 of the tube 2, and a cavity 32 adapted to receive the lining 41, the two cavities 31 and 32 being connected by a semi-cylindrical recess 33 intended to receive the cable 4 for its projecting part from the end 23 of the tube 2, the dimensions of the recess 33 not allowing the passage of the lining 4i.

Le manche 1 comporte égaiement une tête 11, solidarisable par vissage au manchon 10, percée axialement d'un trou 12 dans iequel est enfilé et peut tourner librement le tube 2. The handle 1 also includes a head 11, which can be secured by screwing to the sleeve 10, axially pierced with a hole 12 in which it is threaded and can freely rotate the tube 2.

L'assemblage du manche 1 est complété par le vissage d'au moins une vis 13 solidarisant au moins une demi-coque 30 au manchon 10. The assembly of the handle 1 is completed by the screwing of at least one screw 13 securing at least one half-shell 30 to the sleeve 10.

Ii est à noter que la solidarisation de la coque 3 au manchon lu peut être réalisée différemment, par exemple au moyen d'une saillie longitudinale ménagée extérieurement sur l'une au moins des aemi-coques 30 et à'au moins une gorge iongitudinaie pratiquée intérieurement au manchon 10. It should be noted that the attachment of the shell 3 to the sleeve read can be carried out differently, for example by means of a longitudinal projection provided externally on at least one of the half-shells 30 and at least one iongitudinaie groove practiced inside the sleeve 10.

Lorsque le manche 1 est assemblé, le tube 2 peut tourner librement dans la tête 11 et dans les cavités 31 des demi-coques 30, par contre la garniture 40 étant emprisonnée dans les cavités 31 des demi-coques 30, dont l une au moins est liée au manchon 10, la rotation du manche 1 sur le tube entraîne la rotation du câble 4 donc du porte-embout 21. When the handle 1 is assembled, the tube 2 can rotate freely in the head 11 and in the cavities 31 of the half-shells 30, on the other hand the lining 40 being trapped in the cavities 31 of the half-shells 30, of which at least one is linked to the sleeve 10, the rotation of the handle 1 on the tube causes the cable 4 therefore to rotate the bit holder 21.

On comprendra que le démontage s'opère aisément en enlevant la vis 13, puis en dévissant la tête 11 pour libérer les demi-coques 30 du manchon 10, ce qui permet d'extraire le câble 4 du tube 2. It will be understood that the disassembly takes place easily by removing the screw 13, then by unscrewing the head 11 to release the half-shells 30 from the sleeve 10, which makes it possible to extract the cable 4 from the tube 2.

Il va de soi que la présente invention ne saurait être limitée à la description qui précède d'un de ses modes de réalisation, susceptible de subir un certain nombre de modifications sans pour autant sortir du cadre de l'invention. It goes without saying that the present invention cannot be limited to the preceding description of one of its embodiments, capable of undergoing a certain number of modifications without departing from the scope of the invention.

Claims (5)

Translated fromFrench
REVENDICATIONS1) Dispositif de tournevis angulaire permettant le vissage et le dévissage de vis difficilement accessibles, notamment dans le domaine chirurgical, caractérisé en ce qu'il comprend un tube (2) dont une extrémité (20) est coudée, à l intérieur duquel est introduit un câble (4) aux extrémités duquel sont sertis d'une part, du côté coudé (20) du tube (2), un moyen (21) de préhension d'un embout de vissage, et d'autre part, à l autre extrémité (40), une garniture (41) de section transversale non ronde susceptible de passer dans ledit tube (2), et en ce que l'extrémité non coudée (22j dudit tube (2) et ladite garniture (41) sont insérées dans une coque (3) réalisée en deux parties (30) assemblables, dans laquelle peut tourner axialement librement ledit tube (2) mais pas ladite garniture (41), cette dernière étant maintenue dans une cavité (32) de forme complémentaire, ladite coque (3) étant elle-méme enveloppée d'un manchon (10) qui lui est solidarisable.1) Angular screwdriver device allowing the screwing and unscrewing of difficult to access screws, in particular in the surgical field, characterized in that it comprises a tube (2) of which one end (20) is bent, inside which is introduced a cable (4) at the ends of which are crimped on the one hand, on the bent side (20) of the tube (2), a means (21) for gripping a screwdriver, and on the other hand end (40), a gasket (41) of non-round cross section capable of passing through said tube (2), and in that the non-bent end (22j of said tube (2) and said gasket (41) are inserted in a shell (3) produced in two parts (30) which can be assembled, in which said tube (2) can rotate freely axially but not said lining (41), the latter being held in a cavity (32) of complementary shape, said shell ( 3) being itself wrapped in a sleeve (10) which can be secured to it.2) Dispositif selon la revendication 1 caractérisé en ce que la solidarisation de la coque (3) au manchon (10) est réalisée au moyen d'une vis (13).2) Device according to claim 1 characterized in that the attachment of the shell (3) to the sleeve (10) is carried out by means of a screw (13).3) Dispositif selon la revendication 1 caractérisé en ce que la solidarisation de la coque t3) au manchon (10) est réalisée au moyen d'une saillie longitudinale ménagée extérieurement sur l'une au moins des demi-coques (30) et d'une gorge longitudinale pratiquée intérieurement au manchon (10).3) Device according to claim 1 characterized in that the attachment of the shell t3) to the sleeve (10) is achieved by means of a longitudinal projection externally formed on at least one of the half-shells (30) and a longitudinal groove made internally at the sleeve (10).4) Dispositif selon i une queiconque des revendications précédentes caractérisé en ce que la câble (4) est un faisceau de fils torsadés.4) Device according to i any one of the preceding claims characterized in that the cable (4) is a bundle of twisted son.5) Dispositif selon ia revendication 4 caractérisé en ce que le sens de torsion des fils est tel que ie dévissage resserre lesdits fils.5) Device according to ia claim 4 characterized in that the direction of twist of the son is such that unscrewing tightens said son.
FR9503307A1995-03-161995-03-16 ANGULAR SCREWDRIVER DEVICE FOR SCREWING IN AND SCREWING DIFFICULT ACCESSIBLE SCREWS, PARTICULARLY IN THE SURGICAL FIELDWithdrawnFR2731643A1 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
FR9503307AFR2731643A1 (en)1995-03-161995-03-16 ANGULAR SCREWDRIVER DEVICE FOR SCREWING IN AND SCREWING DIFFICULT ACCESSIBLE SCREWS, PARTICULARLY IN THE SURGICAL FIELD

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
FR9503307AFR2731643A1 (en)1995-03-161995-03-16 ANGULAR SCREWDRIVER DEVICE FOR SCREWING IN AND SCREWING DIFFICULT ACCESSIBLE SCREWS, PARTICULARLY IN THE SURGICAL FIELD

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FR2731643A1true FR2731643A1 (en)1996-09-20

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FR9503307AWithdrawnFR2731643A1 (en)1995-03-161995-03-16 ANGULAR SCREWDRIVER DEVICE FOR SCREWING IN AND SCREWING DIFFICULT ACCESSIBLE SCREWS, PARTICULARLY IN THE SURGICAL FIELD

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US8147548B2 (en)2005-03-212012-04-03Kyphon SarlInterspinous process implant having a thread-shaped wing and method of implantation
US8147526B2 (en)2010-02-262012-04-03Kyphon SarlInterspinous process spacer diagnostic parallel balloon catheter and methods of use
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US8771317B2 (en)2009-10-282014-07-08Warsaw Orthopedic, Inc.Interspinous process implant and method of implantation
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