FR2726461A1 - Compressive osteosynthesis plate for long bones - Google Patents
Compressive osteosynthesis plate for long bones Download PDFInfo
- Publication number
- FR2726461A1 FR2726461A1 FR9413673A FR9413673A FR2726461A1 FR 2726461 A1 FR2726461 A1 FR 2726461A1 FR 9413673 A FR9413673 A FR 9413673A FR 9413673 A FR9413673 A FR 9413673A FR 2726461 A1 FR2726461 A1 FR 2726461A1
- Authority
- FR
- France
- Prior art keywords
- plate
- washers
- orifices
- plate according
- fracture site
- 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.)
- Withdrawn
Links
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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
-
- 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)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (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
Description
Plaque autocompressive Dour ostéosvnthèse des os longs notamment. Autocompressive plate for osteosvnthesis of long bones in particular.
L'invention se rattache au secteur technique des implants chirurgicaux, notramment pour la consolidation des fractures des os longs. The invention relates to the technical sector of surgical implants, in particular for the consolidation of long bone fractures.
Généralement, la consolidation des fractures s'effectue au moyen de plaques ou de clous. Generally, the consolidation of fractures is carried out by means of plates or nails.
D'une manière parfaitement connue, une plaque constitue un implant rigide, vissé sur l'os, de part et d'autre du foyer de fracture. Sa mise en place nécessite une ouverture en regard du foyer de fracture, ce qui entraine une diminution de l'apport vasculaire à l'os. La fonction d'une plaque est d'immobiliser le foyer de fractures pour en permettre la consolidation. In a perfectly known manner, a plate constitutes a rigid implant, screwed onto the bone, on either side of the fracture site. Its installation requires an opening opposite the fracture site, which leads to a decrease in vascular supply to the bone. The function of a plate is to immobilize the focus of fractures to allow its consolidation.
Cependant, une telle consolidation n'est pas toujours aisée, suite à la diminution de l'apport sanguin, d'une part, et au changement du régime des forces s'exprimant au niveau de l'os, d'autre part. En effet, la plaque shunte la totalité des forces s'exprimant au niveau du foyer de fracture, les forces passant par la partie sus-fracturaire puis sousfracturaire de la plaque avant de revenir dans l'os lui-même. Ce shunt des forces peut entrainer des consolidations difficiles. However, such consolidation is not always easy, following the decrease in blood supply, on the one hand, and the change in the regime of forces expressed at the bone level, on the other hand. Indeed, the plate shunts all the forces expressing themselves at the level of the fracture site, the forces passing through the supra-fracture then sub-fracture part of the plate before returning to the bone itself. This force shunt can lead to difficult consolidations.
Pour tenter de remédier à ces inconvénients, on a proposé des plaques dites auto-compressives. Dans ce type de plaques, les trous recevant les vis présentent un profil déterminé permettant un glissement de l'os sous la plaque, lors du serrage d'une vis, dans le trou correspondant. In an attempt to remedy these drawbacks, so-called self-compressing plates have been proposed. In this type of plates, the holes receiving the screws have a determined profile allowing the bone to slide under the plate, when tightening a screw, in the corresponding hole.
Si, de part et d'autre du foyer de fracture, les trous sont opposés, on obtient une compression plus ou moins définitive. On obtient ainsi une stabilisation de la fracture, mais en aucun cas ce type de plaque ne laisse passer le poids du corps au travers du foyer de fracture, afin d'obtenir une parfaite consolidation.If, on either side of the fracture site, the holes are opposite, a more or less final compression is obtained. Stabilization of the fracture is thus obtained, but in no case does this type of plate allow the body weight to pass through the fracture site, in order to obtain perfect consolidation.
La consolidation au moyen d'un clou centro-médullaire ne présente pas ces inconvénients. L'enclouage consiste à mettre en place un clou dans la cavité médullaire de l'os considéré, généralement sans aborder le foyer de fracture. L'ouverture s'effectue à distance du foyer de fracture, la vascularisation autour de l'os étant respectée. Consolidation by means of a medullary nail does not have these drawbacks. Nailing consists in placing a nail in the medullary cavity of the bone considered, generally without approaching the focal point of the fracture. The opening is made at a distance from the fracture site, the vascularization around the bone being respected.
Avec cette méthode, la consolidation est, en règle générale, plus facile à obtenir, le poids du corps passant par le foyer de fracture. With this method, consolidation is, as a rule, easier to obtain, the body weight passing through the fracture site.
Cependant, la mise en place d'un clou est plus délicate qu'une plaque rapportée à l'extérieur de l'os.However, the placement of a nail is more delicate than a plate attached to the outside of the bone.
L'invention s'est fixée pour but de remédier à ces inconvénients, de manière simple, sûre, efficace et rationnelle. The object of the invention is to remedy these drawbacks in a simple, safe, effective and rational manner.
Le problème que se propose de résoudre l'invention, est d'assurer une ostéosynthèse en combinant les avantages d'une plaque et d'un clou. The problem that the invention proposes to solve is to provide osteosynthesis by combining the advantages of a plate and a nail.
Pour résoudre un tel problème, il a été conçu et mis au point une plaque autocompressive qui comprend une pluralité d'orifices débouchants aptes à recevoir des vis de fixation en combinaison avec des rondelles d'appui, pour rendre solidaire la plaque de part et d'autre du foyer de fracture, de sorte que le poids du corps passe par ledit foyer de fracture. To solve such a problem, it has been designed and developed a self-compressing plate which comprises a plurality of through holes adapted to receive fixing screws in combination with support washers, to make the plate integral with and other of the fracture site, so that the body weight passes through said fracture site.
Pour résoudre le problème posé de faire passer lepoids du corps par le foyer de fracture et non plus par la plaque, afin de favoriser la consolidation, les orifices et les rondelles sont de dimensions différentes, les rondelles ayant la capacité de se déplacer par coulissement dans les orifices correspondants pour constituer un ensemble dynamique. To solve the problem of passing the body weight through the fracture site and no longer through the plate, to promote consolidation, the holes and the washers are of different dimensions, the washers having the ability to move by sliding in the corresponding orifices to constitute a dynamic assembly.
Avantageusement, les rondelles sont de forme générale quadrangulaire, les bords étant chanfreinés d'une manière complémentaire au pourtour des orifices. Le fond des orifices présente une lumière oblongue. Advantageously, the washers are of generally quadrangular shape, the edges being chamfered in a manner complementary to the periphery of the orifices. The bottom of the openings has an oblong light.
L'invention est exposée, ci-après plus en détail à l'aide des dessins annexés, dans lesquels:
La figure 1 est une vue en perspective des principaux éléments constitutifs de la plaque selon l'invention.The invention is set out below in more detail using the appended drawings, in which:
Figure 1 is a perspective view of the main components of the plate according to the invention.
La figure 2 est une vue en plan de la plaque. Figure 2 is a plan view of the plate.
Les figures 3, 4 et 5 sont respectivement, des vues en coupe transversale considérées selon les lignes 3.3, 4.4, 5.5 de la figure 2. Figures 3, 4 and 5 are respectively, cross-sectional views taken along lines 3.3, 4.4, 5.5 of Figure 2.
La figure 6 est une vue en perspective montrant la mise en place de la plaque selon l'invention. Figure 6 is a perspective view showing the establishment of the plate according to the invention.
La figure 7 est une vue correspondant à la figure 6, montrant la réduction de la fracture. Figure 7 is a view corresponding to Figure 6 showing the reduction of the fracture.
La figure 8 est à grande échelle, une vue en coupe transversale montrant la fixation de la plaque. Figure 8 is a large scale, a cross-sectional view showing the fixing of the plate.
La figure 9 est une vue en coupe considérée selon la ligne 9.9 de la figure 8. Figure 9 is a sectional view taken along line 9.9 of Figure 8.
La figure 10 est une vue en plan correspondant à la figure 8. FIG. 10 is a plan view corresponding to FIG. 8.
La figure 11 est une vue semblable à la figure 10, montrant une variante de réalisation. Figure 11 is a view similar to Figure 10 showing an alternative embodiment.
Selon l'invention, la plaque, désignée dans son ensemble par (1), est réalisée en acier inoxydable, titane, sans pour cela exlure d'autres matériaux. Cette plaque, de forme générale rectangulaire, présente un profil transversal très légèrement arrondi, pour épouser le profil anatomique de l'os considéré. According to the invention, the plate, designated as a whole by (1), is made of stainless steel, titanium, without thereby excluding other materials. This generally rectangular plate has a very slightly rounded transverse profile to match the anatomical profile of the bone in question.
Selon l'invention, la plaque présente une pluralité d'orifices débouchants (la), aptes à recevoir des vis de fixation (2), en combinaison avec des rondelles d'appui (3). According to the invention, the plate has a plurality of through orifices (la), capable of receiving fixing screws (2), in combination with support washers (3).
Le fond des orifices (la) présente une lumière oblongue (las). The bottom of the orifices (la) has an oblong light (las).
Les orifices ont une forme générale rectangulaire, les bords (1a2) étant chanfreinés. Les rondelles (3) sont de dimensions différentes de celles des orifices (1 a) et sont conformées pour être déplacées par coulissement dans lesdits orifices. Les rondelles ont une largeur (I) très sensiblement égale à celle des orifices, et présentent une longueur (11) inférieure à la longueur (12) des orifices. Avantageusement, les dimensions (I) et (11) des rondelles sont égales.The orifices have a generally rectangular shape, the edges (1a2) being chamfered. The washers (3) are of different dimensions from those of the orifices (1a) and are shaped to be moved by sliding in said orifices. The washers have a width (I) very substantially equal to that of the orifices, and have a length (11) less than the length (12) of the orifices. Advantageously, the dimensions (I) and (11) of the washers are equal.
Les bords (3a) des rondelles sont chanfreinés d'une manière complémentaire aux bords (1) et (2) des orifices. The edges (3a) of the washers are chamfered in a manner complementary to the edges (1) and (2) of the orifices.
Les vis (2) présentent une tête (2a) dont la base (2a1) est hémisphérique pour coopérer avec une cuvette complémentaire (3b), établie dans l'épaisseur de la rondelle correspondante (3). The screws (2) have a head (2a) whose base (2a1) is hemispherical to cooperate with a complementary cup (3b), established in the thickness of the corresponding washer (3).
Compte-tenu de ces dispositions, il apparait donc que la plaque (1) se visse sur l'os par l'intermédiaire des rondelles (3), avec capacité de coulissement dans les orifices (1 a). Ces dispositions permettent donc de réduire la fracture dans le cas notamment d'un foyer incomplètement jointif (figures 6 et 7). Given these provisions, it therefore appears that the plate (1) is screwed onto the bone by means of the washers (3), with sliding capacity in the orifices (1 a). These provisions therefore make it possible to reduce the fracture in the case in particular of an incompletely joined hearth (Figures 6 and 7).
En outre, le poids du corps ne passe plus par la plaque, mais par le foyer de fracture, favorisant ainsi la consolidation. La plaque (1) joue sont rôle de maintien des fragments l'un par rapport à l'autre dans tous les autres mouvements. In addition, the body weight no longer passes through the plate, but through the fracture site, thus promoting consolidation. The plate (1) plays the role of holding the fragments relative to each other in all other movements.
Comme le montrent clairement les figures 6 et 7, lorsque la plaque (1) est posée sur un foyer non jointif (figure 6), le poids du corps rend le foyer jointif, favorisant l'apparition- d'un cal périosté, les rondelles (3), recevant les vis d'ancrage (2), coulissent dans les orifices. As clearly shown in Figures 6 and 7, when the plate (1) is placed on a non-joined hearth (Figure 6), the weight of the body makes the hearth joined, favoring the appearance of a periosteal callus, the washers (3), receiving the anchor screws (2), slide in the holes.
A noter que orifices (la) peuvent alternativement être décalés par rapport à l'axe médian (1). De même, on n'exclut pas d'employer des rondelles ayant les mêmes dimensions que les orifices, d'une manière à créer une plaque statique. Note that orifices (la) can alternatively be offset relative to the median axis (1). Similarly, it is not excluded to use washers having the same dimensions as the orifices, so as to create a static plate.
Les avantages ressortent bien de la description. The advantages are apparent from the description.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9413673A FR2726461A1 (en) | 1994-11-07 | 1994-11-07 | Compressive osteosynthesis plate for long bones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9413673A FR2726461A1 (en) | 1994-11-07 | 1994-11-07 | Compressive osteosynthesis plate for long bones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2726461A1 true FR2726461A1 (en) | 1996-05-10 |
Family
ID=9468817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9413673A Withdrawn FR2726461A1 (en) | 1994-11-07 | 1994-11-07 | Compressive osteosynthesis plate for long bones |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2726461A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0897697A1 (en) * | 1997-05-09 | 1999-02-24 | Spinal Innovations | Spinal fixation plate |
| EP1306057A3 (en) * | 2001-10-23 | 2003-10-15 | BIEDERMANN MOTECH GmbH | Bones fixation device |
| WO2004049962A1 (en) * | 2002-12-02 | 2004-06-17 | Mathys Medizinaltechnik Ag | Implant for fixing bones |
| EP2016918A1 (en) | 2007-07-18 | 2009-01-21 | Mario Angel Pizzicara | Blocked plate with combined holes, stability control and double angulation, to join fractured bones |
| EP1962723B1 (en) * | 2005-12-22 | 2011-03-23 | Smith & Nephew, Inc. | Tissue graft fixation |
| US8361126B2 (en) | 2007-07-03 | 2013-01-29 | Pioneer Surgical Technology, Inc. | Bone plate system |
| US20130041413A1 (en) * | 2010-11-28 | 2013-02-14 | Shandong Hangwei Orthopedics Medical Instrument Co., Ltd. | Universal locking and compression device for bone plate |
| US8623019B2 (en) | 2007-07-03 | 2014-01-07 | Pioneer Surgical Technology, Inc. | Bone plate system |
| WO2014021805A3 (en) * | 2012-08-03 | 2014-05-01 | Dursunoglu Hayri | A modular piece and low profile lock plate system |
| US11877779B2 (en) | 2020-03-26 | 2024-01-23 | Xtant Medical Holdings, Inc. | Bone plate system |
-
1994
- 1994-11-07 FR FR9413673A patent/FR2726461A1/en not_active Withdrawn
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0897697A1 (en) * | 1997-05-09 | 1999-02-24 | Spinal Innovations | Spinal fixation plate |
| US6017345A (en) * | 1997-05-09 | 2000-01-25 | Spinal Innovations, L.L.C. | Spinal fixation plate |
| US8361127B2 (en) | 2001-10-23 | 2013-01-29 | Biedermann Technologies Gmbh & Co. Kg | Bone fixing device |
| EP1306057A3 (en) * | 2001-10-23 | 2003-10-15 | BIEDERMANN MOTECH GmbH | Bones fixation device |
| US7771458B2 (en) | 2001-10-23 | 2010-08-10 | Biedermann Motech Gmbh | Bone fixing device |
| WO2004049962A1 (en) * | 2002-12-02 | 2004-06-17 | Mathys Medizinaltechnik Ag | Implant for fixing bones |
| US7641676B2 (en) | 2002-12-02 | 2010-01-05 | Synthes Usa, Llc | Implant for fixing bones |
| EP1962723B1 (en) * | 2005-12-22 | 2011-03-23 | Smith & Nephew, Inc. | Tissue graft fixation |
| US8361126B2 (en) | 2007-07-03 | 2013-01-29 | Pioneer Surgical Technology, Inc. | Bone plate system |
| US9381046B2 (en) | 2007-07-03 | 2016-07-05 | Pioneer Surgical Technology, Inc. | Bone plate system |
| US10898247B2 (en) | 2007-07-03 | 2021-01-26 | Pioneer Surgical Technology, Inc. | Bone plate system |
| US8623019B2 (en) | 2007-07-03 | 2014-01-07 | Pioneer Surgical Technology, Inc. | Bone plate system |
| US10226291B2 (en) | 2007-07-03 | 2019-03-12 | Pioneer Surgical Technology, Inc. | Bone plate system |
| US9655665B2 (en) | 2007-07-03 | 2017-05-23 | Pioneer Surgical Technology, Inc. | Bone plate systems |
| EP2016918A1 (en) | 2007-07-18 | 2009-01-21 | Mario Angel Pizzicara | Blocked plate with combined holes, stability control and double angulation, to join fractured bones |
| US9005257B2 (en) * | 2010-11-28 | 2015-04-14 | Dexiu Sun | Universal locking and compression device for bone plate |
| US20130041413A1 (en) * | 2010-11-28 | 2013-02-14 | Shandong Hangwei Orthopedics Medical Instrument Co., Ltd. | Universal locking and compression device for bone plate |
| WO2014021805A3 (en) * | 2012-08-03 | 2014-05-01 | Dursunoglu Hayri | A modular piece and low profile lock plate system |
| US11877779B2 (en) | 2020-03-26 | 2024-01-23 | Xtant Medical Holdings, Inc. | Bone plate system |
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| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |