ES2251861B1 - LUMBOSACRA MONOAXIAL FIXING SCREW FOR FRACTURES AND VERTEBRAL INJURIES. - Google Patents
LUMBOSACRA MONOAXIAL FIXING SCREW FOR FRACTURES AND VERTEBRAL INJURIES. Download PDFInfo
- Publication number
- ES2251861B1 ES2251861B1 ES200400279A ES200400279A ES2251861B1 ES 2251861 B1 ES2251861 B1 ES 2251861B1 ES 200400279 A ES200400279 A ES 200400279A ES 200400279 A ES200400279 A ES 200400279A ES 2251861 B1 ES2251861 B1 ES 2251861B1
- Authority
- ES
- Spain
- Prior art keywords
- screw
- washer
- monoaxial
- bevel
- bar
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 230000006378 damage Effects 0.000 title abstract description 6
- 238000010276 construction Methods 0.000 claims abstract description 11
- 208000020307 Spinal disease Diseases 0.000 claims description 2
- 206010069689 Spinal column injury Diseases 0.000 abstract description 2
- 206010041569 spinal fracture Diseases 0.000 abstract description 2
- 206010017076 Fracture Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
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)
- Surgical Instruments (AREA)
Abstract
Tornillo monoaxial de fijación lumbosacra para fracturas y lesiones vertebrales. Se dispone como un tornillo (1) con cuerpo (1.1) corto y una construcción en doble biselado (1.2) opuesto con arista viva (1.3) central de la zona de cuna (1.4) de la barra (4); así como una arandela (2) intermedia con amplio bisel (2.1) de su base inferior, generando dos líneas continuas y transversales en su proyección, de contacto de la barra (4), con la línea curva de la arista (1. 3) de la cuna (1. 4) del tornillo (1) y a lo largo del tramo de contacto de la misma con el bisel (2.1) de la arandela (2), en angulación respecto del plano sagital de hasta 20º; así como un tornillo de apriete (3), superior a la arandela (2), de tipo chincheta, inserto en el cuerpo de la arandela (2) y con la generatriz de su ala (3.1) de igual radio que la de ésta.Lumbosacral fixation monoaxial screw for vertebral fractures and injuries. It is arranged as a screw (1) with a short body (1.1) and a double beveled construction (1.2) opposite with a central living edge (1.3) of the cradle area (1.4) of the bar (4); as well as an intermediate washer (2) with wide bevel (2.1) of its lower base, generating two continuous and transverse lines in its projection, of contact of the bar (4), with the curved line of the edge (1.3) of the cradle (1. 4) of the screw (1) and along its section of contact with the bevel (2.1) of the washer (2), angled with respect to the sagittal plane of up to 20º; as well as a tightening screw (3), superior to the washer (2), of pushpin type, inserted in the body of the washer (2) and with the generator of its wing (3.1) of the same radius as that of the latter.
Description
Tornillo monoaxial de fijación lumbosacra para fracturas y lesiones vertebrales.Lumbosacral Monoaxial Screw for vertebral fractures and injuries.
La presente invención se refiere a un tornillo monoaxial de fijación lumbosacra para fracturas y lesiones vertebrales, de entre los diferentes medios de fijación de vértebras que utilizan tornillos transpediculares.The present invention relates to a screw luaxosacral fixation monoaxial for fractures and injuries vertebral, among the different means of fixation of vertebrae that use transpedicular screws.
Caracteriza esta invención una especial construcción corta del tornillo, lo que le hace menos invasivo y permite mayores angulaciones de las barras trans-versales del sistema de fijación y en mayor número de posiciones de las mismas.This invention characterizes a special short screw construction, which makes it less invasive and allows greater angulation of the bars trans-verbal fixation system and in greater number of positions thereof.
Aparte de ello incorpora una arandela especial y un tornillo interior de apriete, de tipo chincheta.Apart from that it incorporates a special washer and an internal tightening screw, pushpin type.
Tanto para la síntesis vertebral como para la corrección de deformidades de la columna se dispone, construyendo un montaje al menos entre dos vértebras, de unos medios de sujeción que incorporan, al menos, una pareja de tornillos, insertos en las vértebras de forma muy precisa, para facilitar el paso de las barras de unión entre vértebras. Aparte de ello, unas barras transversales, que fijan la posición de estas barra de unión bajo carga, obligan a las mismas a un perfecto paralelismo, para eludir con ello el posible daño a las vértebras.For both vertebral synthesis and for deformity correction of the column is arranged, building an assembly between at least two vertebrae, of some fastening means which incorporate at least one pair of screws, inserted in the vertebrae very precisely, to facilitate the passage of joining bars between vertebrae. Apart from that, some bars transverse, which fix the position of these tie bar under load, force them to a perfect parallelism, to avoid with it the possible damage to the vertebrae.
El solicitante dispone de una patente de invención, de Nº ES 2 154227, denominada: "Sistema poliaxial de fijación de vértebras", que incorpora tornillos poliaxiales de inserción, que permitan posicionar la barra longitudinal independientemente de la orientación del eje del tornillo, así como de medios de fijación de las barras transversales, mediante coronas dentadas que posibilitan la unión no ortogonal entre barras longitudinales.The applicant has a patent for invention of No. ES 2 154227, called: "Polyaxial system of fixation of vertebrae ", which incorporates polyaxial screws of insertion, which allow to position the longitudinal bar regardless of the orientation of the screw shaft, as well as of means for fixing the crossbars by means of crowns teeth that allow non-orthogonal connection between bars Longitudinal
No obstante lo anterior, junto a esta invención convive la construcción de los tornillos monoaxiales, es decir, de aquellos tornillos más convencionales en los que la cabeza y el cuerpo se constituyen en pieza única.Notwithstanding the foregoing, together with this invention coexists the construction of monoaxial screws, that is, of those more conventional screws in which the head and the body constitute a single piece.
En estos sistemas de raquis monoaxiales se requiere una gran precisión en la orientación de las barras longitudinales durante el proceso de estabilización del sistema, cosa que no facilita la construcción del tornillo en la totalidad de los casos. Así mismo se requiere su adecuada instrumentación en quirófano.In these monoaxial spine systems, requires great precision in the orientation of the bars Longitudinal during the system stabilization process, something that does not facilitate the construction of the screw in the whole of the cases. It also requires its proper instrumentation in operating room
El solicitante desconoce la existencia de tornillos monoaxiales que resuelvan la problemática anteriormente descrita, con la sencillez y eficacia de la invención que ahora se procede a describir, en base a un conjunto de tornillo en construcción especial.The applicant is unaware of the existence of monoaxial screws that solve the problem before described, with the simplicity and effectiveness of the invention that is now proceed to describe, based on a screw assembly in special construction
La presente invención se refiere a un tornillo monoaxial de fijación lumbosacra para fracturas y lesiones vertebrales, de entre todos aquellos diferentes medios de fijación de vértebras que utilizan conjuntos de tornillos transpediculares de tipo monoaxial.The present invention relates to a screw luaxosacral fixation monoaxial for fractures and injuries vertebral, among all those different means of fixation of vertebrae that use transpedicular screw assemblies monoaxial type.
Caracteriza esta invención una especial construcción corta del tornillo, lo que le hace menos invasivo y acorta los tiempos de intervención, reduciendo las necesidades de anestesia y de quirófano. En este tornillo se conjuga el referido acortamiento con una especial construcción de la zona de cuna de la barra, configurada en doble biselado opuesto con arista viva central.This invention characterizes a special short screw construction, which makes it less invasive and shortens intervention times, reducing the needs of anesthesia and operating room. In this screw the referred one is conjugated shortening with a special construction of the cradle area of the bar, configured in opposite double bevel with live edge central.
Esta forma especial permite mayores angulaciones de las barras transversales del sistema de fijación y en mayor número de posiciones de las mismas, en conjunción con la especial construcción de la arandela intermedia, la cual dispone su base inferior ampliamente biselada, lo que posibilita que se mantenga el contacto de arandela y barra a lo largo del tramo de apoyo de aquella sobre ésta, incluso con una importante angulación respecto del plano sagital.This special shape allows for greater angulations. of the crossbars of the fixing system and in greater number of positions thereof, in conjunction with the special construction of the intermediate washer, which has its base Widely bevelled bottom, which allows the washer and rod contact along the support section of that on this one, even with an important angulation regarding of the sagittal plane.
Completa la invención un tornillo interior de apriete, de tipo chincheta, inserto en el cuerpo de la arandela y con la generatriz de su ala de igual radio que la de ésta.The invention completes an inner screw of tighten, pushpin type, inserted into the body of the washer and with the generatrix of its wing of the same radius as its wing.
Se complementa la presente memoria descriptiva, con un juego de planos, ilustrativos del ejemplo preferente y nunca limitativo de la invención.This descriptive report is complemented, with a set of drawings, illustrative of the preferred example and never limiting the invention.
La Figura 1 es una perspectiva del conjunto del tornillo transpedicular de la invención.Figure 1 is a perspective of the whole of the transpedicular screw of the invention.
La Figura 2 es una explosión de los tres componentes del mismo, así como una vista en planta superior de su pieza principal.Figure 2 is an explosion of the three components thereof, as well as a top plan view of its main piece
La Figura 3 muestra un montaje del sistema que incorpora este tornillo.Figure 3 shows a system assembly that incorporate this screw.
A la vista de lo anteriormente enunciado, la presente invención se refiere a un tornillo monoaxial de fijación lumbosacra para fracturas y lesiones vertebrales, de entre los diferentes conjuntos de tornillos transpediculares de tipo monoaxial, que reduce el número de elementos componentes del sistema, esencialmente caracterizado por conjugar una construcción corta, en sentido longitudinal, del cuerpo (1.1) tornillo (1) con una construcción en doble biselado (1.2) opuesto con arista viva (1.3) central de la zona de cuna (1.4) de la barra (4); así como una arandela (2) intermedia con amplio bisel (2.1) de su base inferior, generando dos líneas continuas y transversales en su proyección, de contacto de la barra (4), con la línea curva de la arista (1.3) de la cuna (1.4) del tornillo (1) y a lo largo del tramo de contacto de la misma con el bisel (2.1) de la arandela (2), en angulación respecto del plano sagital de hasta 20º.In view of the foregoing, the The present invention relates to a monoaxial fixing screw lumbosacral fractures and vertebral lesions, among different sets of transpedicular type screws monoaxial, which reduces the number of component elements of the system, essentially characterized by combining a construction cut, lengthwise, the body (1.1) screw (1) with a double beveled construction (1.2) opposite with a sharp edge (1.3) center of the cradle area (1.4) of the bar (4); as well as an intermediate washer (2) with wide bevel (2.1) from its base lower, generating two continuous and transversal lines in its projection, contact bar (4), with the curved line of the edge (1.3) of the cradle (1.4) of the screw (1) and along the section of contact of the same with the bevel (2.1) of the washer (2), in angulation with respect to the sagittal plane of up to 20º.
Caracteriza también un tornillo de apriete (3), superior a la arandela (2), de tipo chincheta, inserto en el cuerpo de la arandela (2) y con la generatriz de su ala (3.1) de igual radio que la de ésta.It also features a clamping screw (3), upper than the washer (2), pushpin type, inserted in the body of the washer (2) and with the generatrix of its wing (3.1) of equal radio than this one.
El conjunto formado por varias parejas de tornillos monoaxiales (1,2 3) unidos por barras (4) se arma mediante otras barras transversales (5) unidas a estas barras (4) mediante tornillos (6) de autosujeción convencionales.The set formed by several couples of monoaxial screws (1,2 3) attached by bars (4) are assembled by other crossbars (5) attached to these bars (4) by means of conventional self-clamping screws (6).
No altera la esencialidad de esta invención variaciones en materiales, forma, tamaño y disposición de los elementos componentes, descritos de manera no limitativa, bastando ésta para proceder a su reproducción por un experto.It does not alter the essentiality of this invention variations in materials, shape, size and arrangement of component elements, described in a non-limiting manner, sufficient this one to proceed to its reproduction by an expert.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200400279A ES2251861B1 (en) | 2004-02-09 | 2004-02-09 | LUMBOSACRA MONOAXIAL FIXING SCREW FOR FRACTURES AND VERTEBRAL INJURIES. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200400279A ES2251861B1 (en) | 2004-02-09 | 2004-02-09 | LUMBOSACRA MONOAXIAL FIXING SCREW FOR FRACTURES AND VERTEBRAL INJURIES. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2251861A1 ES2251861A1 (en) | 2006-05-01 |
| ES2251861B1 true ES2251861B1 (en) | 2008-11-16 |
Family
ID=36370878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200400279A Expired - Fee Related ES2251861B1 (en) | 2004-02-09 | 2004-02-09 | LUMBOSACRA MONOAXIAL FIXING SCREW FOR FRACTURES AND VERTEBRAL INJURIES. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2251861B1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9014817D0 (en) * | 1990-07-04 | 1990-08-22 | Mehdian Seyed M H | Improvements in or relating to apparatus for use in the treatment of spinal disorders |
| FR2719990B1 (en) * | 1994-05-20 | 1996-10-11 | Lepine Groupe | Fixation and osteosynthesis device for spine. |
| DE19605640C2 (en) * | 1996-02-15 | 2002-08-14 | Peter Griss | Osteosynthetic fastener |
| FR2747028B1 (en) * | 1996-04-09 | 1998-06-26 | Stryker France Sa | DEVICE FOR FIXING A STEERING SPINAL OSTEOSYNTHESIS ROD WITH ANGULAR BLOCK CONFIRMATION MEANS |
| FR2778089B1 (en) * | 1998-04-30 | 2000-07-21 | Dimso Sa | SPINAL OSTEOSYNTHESIS SYSTEM WITH FLANGE AND LATCH |
-
2004
- 2004-02-09 ES ES200400279A patent/ES2251861B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2251861A1 (en) | 2006-05-01 |
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