FR2589716A1 - INSTRUMENTATION FOR THE TREATMENT OF SPINAL DEFORMATIONS, ESPECIALLY SCOLIOSES - Google Patents
INSTRUMENTATION FOR THE TREATMENT OF SPINAL DEFORMATIONS, ESPECIALLY SCOLIOSES Download PDFInfo
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- FR2589716A1 FR2589716A1 FR8516683A FR8516683A FR2589716A1 FR 2589716 A1 FR2589716 A1 FR 2589716A1 FR 8516683 A FR8516683 A FR 8516683A FR 8516683 A FR8516683 A FR 8516683A FR 2589716 A1 FR2589716 A1 FR 2589716A1
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- 206010039722 scoliosis Diseases 0.000 title claims abstract description 13
- 238000011282 treatment Methods 0.000 title claims abstract description 8
- 238000012423 maintenance Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 4
- 206010023509 Kyphosis Diseases 0.000 claims description 3
- 206010058907 Spinal deformity Diseases 0.000 claims description 3
- 230000012010 growth Effects 0.000 abstract description 5
- 241000251539 Vertebrata <Metazoa> Species 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000000926 neurological effect Effects 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 241000112853 Arthrodes Species 0.000 description 1
- 208000000474 Poliomyelitis Diseases 0.000 description 1
- 206010066901 Treatment failure Diseases 0.000 description 1
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 1
- 208000037873 arthrodesis Diseases 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000002972 idiopathic scoliosis Diseases 0.000 description 1
- 230000001769 paralizing effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009559 pubertal growth spurt Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000011477 surgical intervention Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7053—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant with parts attached to bones or to each other by flexible wires, straps, sutures or cables
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7067—Devices bearing against one or more spinous processes and also attached to another part of the spine; Tools therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. 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
- A61B17/7011—Longitudinal element being non-straight, e.g. curved, angled or branched
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/82—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage
Landscapes
- 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)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
LA PRESENTE INVENTION CONCERNE UNE INSTRUMENTATION POUR LE TRAITEMENT DES DEFORMATIONS RACHIDIENNES, NOTAMMENT DES SCOLIOSES. CETTE INSTRUMENTATION EST CARACTERISEE EN CE QU'ELLE COMPREND AU MOINS DEUX PIECES EN FORME DE U OU D'ETRIERS 4, 5 OUVERTS L'UN VERS L'AUTRE, DONT LES BRANCHES LATERALES 4A, 5A SONT PARALLELES ET ADJACENTES ET QUI FORMENT CONJOINTEMENT UNE ARMATURE TELESCOPIQUE SENSIBLEMENT RECTANGULAIRE, ET DES ORGANES DE LIAISON PASSANT AUTOUR DES BRANCHES LATERALES 4A, 5A DES DEUX ETRIERS 4, 5 ET DE PARTIES 2 DES VERTEBRES 1, CES ORGANES DE LIAISON 7 ASSURANT LE MAINTIEN DES VERTEBRES LE LONG DE L'ARMATURE TELESCOPIQUE RECTANGULAIRE TOUT EN AUTORISANT UN COULISSEMENT RELATIF DES DEUX ETRIERS 4, 5 DE CETTE ARMATURE SI BIEN QUE CELLE-CI PEUT S'ALLONGER AU FUR ET A MESURE DE LA CROISSANCE DU RACHIS.THE PRESENT INVENTION CONCERNS AN INSTRUMENTATION FOR THE TREATMENT OF SPINAL DEFORMATIONS, IN PARTICULAR SCOLIOSES. THIS INSTRUMENTATION IS CHARACTERIZED IN THAT IT INCLUDES AT LEAST TWO U-SHAPED OR CALIPER-SHAPED PARTS 4, 5 OPEN TOWARDS THE OTHER, WHOSE SIDE BRANCHES 4A, 5A ARE PARALLEL AND ADJACENT AND WHICH FORM JOINTLY ONE SENSITIVELY RECTANGULAR TELESCOPIC FRAMEWORK, AND CONNECTION PARTS PASSING AROUND THE LATERAL BRANCHES 4A, 5A OF THE TWO BRANCHES 4, 5 AND OF PARTS 2 OF THE VERTEBRA 1, THESE CONNECTION PARTS 7 ENSURING THE MAINTENANCE OF THE RECTANGULAR VERTEBRATES THE LONGELCARM WHILE ALLOWING A RELATIVE SLIDING OF THE TWO CALIPERS 4, 5 OF THIS REINFORCEMENT SO THAT IT CAN LENGTHEN AS THE SPINNERS GROWTH.
Description
La présente invention concerne une instrumentation pour le traitement des déformations rachidiennes, notamment des scolioses. The present invention relates to instrumentation for the treatment of spinal deformities, in particular scoliosis.
Les déformations du rachis sont dominées par la scoliose qui est une déformation associant une courbure latérale dans le plan frontal à une rotation vertébrale dans le plan horizontal. The deformities of the spine are dominated by scoliosis which is a deformation associating a lateral curvature in the frontal plane with a vertebral rotation in the horizontal plane.
Les étioloqies sont variées. Elles sont dominées par la scoliose idiopathique dont la fréquence est de 1% dans la population française. Environ 1 à 3 enfants pour mille ont une scoliose de 290 ou plus, la moitié de ces scolioses étant évolutives. Ces scolioses sont d'autant plus graves qu elles surviennent tôt dans la vie de l'enfant, car il existe un risque évolutif majeur au moment de la poussée de croissance pubertaire. The etiologies are varied. They are dominated by idiopathic scoliosis, the frequency of which is 1% in the French population. About 1 to 3 children per thousand have scoliosis of 290 or more, half of these scoliosis being progressive. These scoliosis are all the more serious as they occur early in the child's life, because there is a major evolutionary risk at the time of the pubertal growth spurt.
Dans les pays encore médicalement sous-développés, les scolioses paralytiques provoquées notamment par les séquelles de poliomyélite sont bien sûr beaucoup plus fré orientes. In countries which are still medically underdeveloped, paralytic scoliosis caused in particular by the sequelae of polio is of course much more common.
Les progrès du dépistage permettent actuellement de découvrir ces scolioses de façon plus précoce ce qui fait qu elles peuvent être traitées en cas d'agqravation par des techniques relativement bénignes comme les corsets orthopê- disques ou la stimulation électrique. Cependant, il persiste un pourcentage assez stable d'environ 20% d'échec de ces traitements pour des raisons diverses notamment la longévité du traitement qui peut durer de 4 h 6 ans, voire plus. Advances in screening are making it possible to discover these scoliosis earlier, which means that they can be treated in the event of aggravation by relatively benign techniques such as orthopedic corsets or electrical stimulation. However, there remains a fairly stable percentage of approximately 20% of failure of these treatments for various reasons including the longevity of the treatment which can last from 4 h 6 years, or even more.
Les interventions chirurgicales en matière de sco jase s'adressent donc aux échecs du traitement orthopédique et a ux s c o i i o s e s dépistées tardivement avec des courbures atteignant an à 50 . Les indications chirurqicales sont bien sr plus larges dans les scolioses neurologiques ou malformative
Les techniques opératoires sont trés variées.Parmi celles-ci on peut citer l'instrumentation de Harrinaton dont le principe consiste h utiliser une simple tinte fixée au rachis à ses deux extrnmités par des crochets qui travail 'ent en dé traction. Ces crochets sont fixés sous les parties mires en haut et sur les lames en bas. Cette tige détend en quelque sorte le rachis scoliotique comme on détendrait un ressort. Les applications de cette technique ont été étendues h tous les domaines de la chirurgie rachidienne depuis 20 ans. Il s'aqit d'une instrumentation postoriere. Surgical interventions in sco jase are therefore intended for orthopedic treatment failures and for late diagnosed scoliosis with curvatures of up to 50 years. The surgical indications are of course broader in neurological or malformative scoliosis
The operating techniques are very varied. Among these we can cite the Harrinaton instrumentation, the principle of which consists in using a single tint fixed to the spine at its two ends by hooks which work in tension. These hooks are fixed under the test pieces at the top and on the blades at the bottom. This rod somewhat relaxes the scoliotic spine as one would relax a spring. Applications of this technique have been extended to all areas of spinal surgery for 20 years. It is a post-instrumentation instrumentation.
On connatt également l'instrumentation de Luque, très légère, qui permet de redresser le rachis en solidarisant les vertèbres avec des tiges métalliques au moyen de fils passant sous les lames. Cette instrumentation a l'énorme avantage d'éviter toute contention plâtrée post-opératoire, mais elle n'est pas sans risque du point de vue neurologique. We also know Luque's instrumentation, very light, which makes it possible to straighten the spine by joining the vertebrae with metal rods by means of wires passing under the blades. This instrumentation has the enormous advantage of avoiding any post-operative plastered restraint, but it is not without risk from a neurological point of view.
Toutes ces instrumentations communes présentent l'inconvénient qu'elles entraident des arthrodèses vertébrales qui stabilisent définitivement la portion du rachis instrumenté qui de ce fait ne peut s'allonger, et par conséquent le développement physique de l'enfant portant de telles instrumentations est arrêté. C'est pourquoi on cherche b mettre en place de telles instrumentations le plus tardivement possible pour ne pas trop bloquer la croissance du rachis. All these common instrumentations have the drawback that they hamper vertebral arthrodeses which definitively stabilize the portion of the instrumented spine which therefore cannot lengthen, and consequently the physical development of the child wearing such instrumentations is stopped. This is why we seek to put in place such instrumentations as late as possible so as not to block the growth of the spine too much.
La présente invention vise 9 remédier à ces inconvé- nients en procurant une instrumentation de conception parti culièrement simple et qui permet de réduire la déformation du rachis tout en suivant la croissance de celui-ci, sans lui nuire. The present invention aims to remedy these drawbacks by providing instrumentation with a particularly simple design and which makes it possible to reduce the deformation of the spine while following its growth, without harming it.
A cet effet cette instrumentation pour le traitement des déformations rachidiennes, notamment des scolioses est caractérisée en ce qu'elle comprend au moins deux pièces en forme de U ou d'étriers ouverts l'un vers l'autre, dont les branches latérales sont parallèles et adjacentes et qui forment conjointement une armature télescopique sensiblement rectangulaire, et des organes de liaison passant autour des branches latérales des deux étriers et de parties des vert- hres, ces organes de liaison assurant le maintien des vertbres le long de l'armature télescopique rectangulaire tout en autorisant o r i s a n t un coulissement relatif des deux étriers de cette armature si bien que celle-ci peut s'allonger au fur et à mesure de la croissance du rachis. To this end, this instrumentation for the treatment of spinal deformations, in particular scoliosis is characterized in that it comprises at least two U-shaped pieces or stirrups open towards each other, whose lateral branches are parallel and adjacent and which jointly form a substantially rectangular telescopic frame, and connecting members passing around the lateral branches of the two stirrups and parts of the vertebrae, these connecting members ensuring the maintenance of the vertebrae along the rectangular telescopic frame while allowing directing a relative sliding of the two stirrups of this frame so that it can lengthen as the spine grows.
Suivant une caractéristique complémentaire de 1' in- invention l'instrumentation comprend une troisième pièce en forme de H dont les branches latérales sont parallèles et adjacentes aux branches latérales des deux étriers et sont reliées, conjointement avec celles-ci, aux vertèbres, par l'intermédiaire des organes de liaison. According to a complementary characteristic of the invention, the instrumentation comprises a third H-shaped part, the lateral branches of which are parallel and adjacent to the lateral branches of the two stirrups and are connected, jointly with these, to the vertebrae, by the 'intermediary of the liaison bodies.
L'instrumentation suivant l'invention offre 1' avan- tage qu elle n'entraîne pas l'apparition d'aucune arthrodèse et qu'elle peut être enlevée en fin de croissance de l'en fant en laissant libre le rachis. The instrumentation according to the invention offers the advantage that it does not cause the appearance of any arthrodesis and that it can be removed at the end of growth of the child by leaving the spine free.
rin décrira ci-après,à titre d'exemple non limitatif, une forme d'exécution de la présente invention,-en référence au dessin annexé sur lequel
La figure 1 est une vue en élévation d'une instrumentation pour le traitement des déformations rachidienne suivant l'invention, mis en place le long d'un rachis.rin will describe below, by way of nonlimiting example, an embodiment of the present invention, with reference to the appended drawing in which
Figure 1 is an elevational view of an instrumentation for the treatment of spinal deformities according to the invention, placed along a spine.
La figure 2 est une vue de profil de l'instrumentation en place. Figure 2 is a side view of the instrumentation in place.
La fiqure 3 est une vue en coupe horizontale faite suivant la ligne TII-IIT de la figure 1. Figure 3 is a horizontal sectional view taken along the line TII-IIT in Figure 1.
La figure 4 est une vue en dlevation d'un étrier plan. FIG. 4 is a view in elevation of a planar stirrup.
La figure 5 est une vue en perspective d'un étrier nalbé. Figure 5 is a perspective view of a half-stirrup.
La figure fi est une vue en élevation de la pince en forme de H plate. Figure fi is an elevational view of the flat H-shaped clamp.
La figure 7 est une vue en perspective de la pièce en forme de H galbée. Figure 7 is a perspective view of the curved H-shaped part.
La finure 9 est une vue en coupe faite suivant la ligne VTIT-VTTT de la figure 6. The finish 9 is a sectional view taken along the line VTIT-VTTT of FIG. 6.
L'instrumentation suivant l'invention qui est représente sur 1 e dessin est destinée à traduire la déformat ion d'un rachis constitue d'une superposition de vertèbres l comportant chacune deux apophyses transverses 9 et une épineuse 3.L'instrumentation gui est destine è s' appl i- nuer s tir la partie postérieure du rachis, est constituA de trois pièces è savoir une pièce supérieure 4 en forme de J ou d'étrier ouvert vers le bas, une pièce inférieure 5 en forme de U Ou d'étrier ouvert vers le haut et une pièce intermédiaire de liaison 6 en forme de H. Les étriers 4 et 5 comportent chacun des branches latêrales respectives 4a, 5a sensiblement verticales, lesquelles sont issues d'âmes horizontales respectives 4b,5b. The instrumentation according to the invention which is shown in the 1st drawing is intended to translate the deformation of a spine consists of a superposition of vertebrae l each comprising two transverse processes 9 and a thorny 3. The instrumentation which is intended è to apply to the posterior part of the spine, consists of three parts, namely an upper part 4 in the form of a J or stirrup open downwards, a lower part 5 in the form of a U or stirrup open upwards and an intermediate connecting piece 6 in the form of H. The stirrups 4 and 5 each have respective lateral branches 4a, 5a substantially vertical, which come from respective horizontal cores 4b, 5b.
Sous sa forme la plus simple, l'instrumentation suivant l'invention pourrait ne comporter que les seuls deux étriers 4 et 5, la pièce intermédiaire en forme de H 6 étant omise. Ces deux étriers sont ouverts l'un vers l'autre et ils sont disposés de telle façon que les branches latfSrals 4a de l'étrier supérieur 4 qui s'étendent vers le bas è Dartir de l'âme horizontale supérieure 4b, soient parallèles et adjacentes aux branches latérales Sa de l'étrier inférieur 5 qui s'étendent vers le haut è partir de l'âme horizontale inférieure 5b.Dans le cas où la troisième pièce intermédiaire en forme de H 6 est utilisée, les branches latérales 6a de cette pièce 6 qui s'étendent vers le haut et vers le bas, à partir drune barre de liaison médiane 6b, sont également parallèles et adjacentes aux branches latérales 4a et Sa des deux étriers 4 et 5. In its simplest form, the instrumentation according to the invention could include only the two stirrups 4 and 5, the intermediate piece in the form of H 6 being omitted. These two stirrups are open towards each other and they are arranged in such a way that the latfSrals 4a branches of the upper stirrup 4 which extend downwards starting from the upper horizontal core 4b, are parallel and adjacent to the lateral branches Sa of the lower stirrup 5 which extend upwards from the lower horizontal core 5b. In the case where the third intermediate H-shaped part 6 is used, the lateral branches 6a of this part 6 which extend upwards and downwards, starting from a median connecting bar 6b, are also parallel and adjacent to the lateral branches 4a and Sa of the two stirrups 4 and 5.
La liaison avec le rachis est réalisée au moyen d'organes souples et déformable tels que des fils mztal- ligues 7 qui sont posés latéralement autour des apophyses transverses 2 des vertèbres 1. an voit plus particulibrement sur la figure 3 que chaque fil métallique de fixation 7 passe autour des trois branches latérales parallèles et adj acen tes aa , Sa et 6a et d'une apophyse transverse 2.De ce fait l'instrumentation suivant l'invention constitue une armature télescopique de forme sensiblement rectangulaire, pouvant s'allonger verticalement pour suivre la croissance de l'enfant. Les branches latérales 4a, 5a, 6a des trois r- c e s constituant cette armature sont maintenues serrées les unes contre les autres et contre les apophyses transverses 2 des vertèbres pour rigidifier le rachis et le maintenir en position correcte. Toutefois le serrage réalisé par les fils métalliques de fixation 7 est tel qu'il permet un coulissement relatif de ces branches latérales 4a,5a ,6a autorisant l'armature télescopique à suivre l'extension du rachis. The connection with the spine is carried out by means of flexible and deformable members such as metallic wires 7 which are placed laterally around the transverse processes 2 of the vertebrae 1. One sees more particularly in FIG. 3 that each metal fixing wire 7 passes around the three parallel side branches and adj acen tes aa, Sa and 6a and a transverse process 2.De fact therefore the instrumentation according to the invention constitutes a telescopic frame of substantially rectangular shape, which can extend vertically to monitor the child's growth. The lateral branches 4a, 5a, 6a of the three r-cs constituting this frame are held tight against each other and against the transverse processes 2 of the vertebrae to stiffen the spine and keep it in the correct position. However, the tightening produced by the metal fixing wires 7 is such that it allows relative sliding of these lateral branches 4a, 5a, 6a allowing the telescopic frame to follow the extension of the spine.
Les figures 4 Q R montrent d'une façon détaillée la façon sont réalisés les éléments constitutifs de l'instrumentation suivant l'invention. Les étriers 4 et 5 peuvent être utilisés sous une forme plane (figure 4) ou encore ils peuvent être galbés dans le plan sagittal (figure 5) pour poser la cyphose dorsale. Figures 4 Q R show in detail how are made the constituent elements of the instrumentation according to the invention. The stirrups 4 and 5 can be used in a planar form (Figure 4) or they can be curved in the sagittal plane (Figure 5) to place the dorsal kyphosis.
De même la pièce intermédiaire en forme de H 6 peut être plane (figure 6) ou galbée (figure 7) pour épouser la cyphose dorsale. La barre horizontale médiane 6b de la pièce 6 en forme de H a une forme coudée b convexité tournée vers l'extérieur, afin de lui permettre d'épouser la forme des lames et des épineuses 2. Similarly, the H-shaped intermediate piece can be flat (Figure 6) or curved (Figure 7) to match the dorsal kyphosis. The median horizontal bar 6b of the H-shaped part 6 has a bent shape b convexity turned towards the outside, in order to allow it to conform to the shape of the blades and thorns 2.
flans une forme d'exécution non limitative de 1 'ins- trumentation suivant l'invention, chacun des étriers 4,5 a une longueur allant de 2q0 à 25nmm, une largeur allant de 25 à 30mm et un diamètre de tige de 3mm, tandis la pièce 6 en forme de H a la même largeur que les étriers 4,5 et sa barre horizontale médiane 6b a une hauteur de lflmm. in a non-limiting embodiment of the instrumentation according to the invention, each of the stirrups 4.5 has a length ranging from 2q0 to 25nmm, a width ranging from 25 to 30mm and a rod diameter of 3mm, while the H-shaped part 6 has the same width as the stirrups 4.5 and its horizontal center bar 6b has a height of lflmm.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8516683A FR2589716B1 (en) | 1985-11-12 | 1985-11-12 | INSTRUMENTATION FOR THE TREATMENT OF SPINAL DEFORMATION, ESPECIALLY SCOLIOSES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8516683A FR2589716B1 (en) | 1985-11-12 | 1985-11-12 | INSTRUMENTATION FOR THE TREATMENT OF SPINAL DEFORMATION, ESPECIALLY SCOLIOSES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2589716A1 true FR2589716A1 (en) | 1987-05-15 |
| FR2589716B1 FR2589716B1 (en) | 1991-06-14 |
Family
ID=9324706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8516683A Expired - Lifetime FR2589716B1 (en) | 1985-11-12 | 1985-11-12 | INSTRUMENTATION FOR THE TREATMENT OF SPINAL DEFORMATION, ESPECIALLY SCOLIOSES |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2589716B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0308156A1 (en) * | 1987-09-15 | 1989-03-22 | Surgicraft Limited | Spinal/skull fixation device |
| WO2005117731A1 (en) | 2004-06-04 | 2005-12-15 | John Burke | Apparatus for the correction of skeletal deformities |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2644735A1 (en) * | 1975-05-30 | 1977-04-07 | Erkki Einari Dipl Ing Nissinen | STRETCH AND SUPPORT DEVICE FOR THE SPINAL COLUMN |
| US4230104A (en) * | 1978-01-23 | 1980-10-28 | Richter Alice E | Splints for treating jaw fractures |
| EP0146347A2 (en) * | 1983-12-15 | 1985-06-26 | A.W.Showell (Surgicraft) Limited | Devices for spinal fixation |
| US4573454A (en) * | 1984-05-17 | 1986-03-04 | Hoffman Gregory A | Spinal fixation apparatus |
-
1985
- 1985-11-12 FR FR8516683A patent/FR2589716B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2644735A1 (en) * | 1975-05-30 | 1977-04-07 | Erkki Einari Dipl Ing Nissinen | STRETCH AND SUPPORT DEVICE FOR THE SPINAL COLUMN |
| US4230104A (en) * | 1978-01-23 | 1980-10-28 | Richter Alice E | Splints for treating jaw fractures |
| EP0146347A2 (en) * | 1983-12-15 | 1985-06-26 | A.W.Showell (Surgicraft) Limited | Devices for spinal fixation |
| US4573454A (en) * | 1984-05-17 | 1986-03-04 | Hoffman Gregory A | Spinal fixation apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0308156A1 (en) * | 1987-09-15 | 1989-03-22 | Surgicraft Limited | Spinal/skull fixation device |
| WO2005117731A1 (en) | 2004-06-04 | 2005-12-15 | John Burke | Apparatus for the correction of skeletal deformities |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2589716B1 (en) | 1991-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse | ||
| RN | Application for restoration | ||
| FC | Decision of inpi director general to approve request for restoration | ||
| ST | Notification of lapse |