• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:NL1016722A1
    申请号:NL1016722
    申请日:2000-11-28
    公开日:2002-05-29
    发明作者:Minguelita Marcolina Lourens
    申请人:Fedan N B N V；
    IPC主号:
    专利说明:

    Brief indication: Device for correcting spinal deformation.
    The invention relates to a device for correcting spinal deformation. More in particular, the invention relates to a device for correcting spinal deformation due to scoliotic pathologies.
    As is well known, in the case of pathologies affecting the spine, such as, for example, scoliosis, which cause abnormal curvature of the spine, distortion correction techniques are usually used which may or may include the use of rigid corsets, or the use of electrical stimulation techniques or in the most serious cases of surgical type techniques.
    The use of stiff corsets is a method that is almost no longer widespread, while the use of electrical stimulation to strengthen the back muscles, such that by increasing the firmness of the muscles located along the cavity of the curve of the spine the position of the column itself is corrected, thus forcing it to take on a normal curve, a technique that appears to be satisfactory.
    The use of electrical stimulation, although it appears to be effective in certain cases, is not, however, the most serious in which the spinal abnormality is pronounced. In this case, it is indeed not sufficient to strengthen the muscles that are located aside the spine and which relate to the areas with abnormal cavity of the spine.
    Finally, the use of the surgical type technique, while naturally very invasive, offers the best results in the most serious cases where the use of the electrical stimulation technique or rigid corsets does not produce any effect.
    With the use of surgical-type techniques for correcting spinal deformation, devices are nowadays utilized that are capable of correcting spinal deformation. In particular, these devices are formed by rods that must be bent before they are screwed into the patient's vertebra, such that the curvature of the spine is followed, thus obtaining a correction effect of the deformation. The prior bending of the spinal deformation correction bars is performed to give the bars a shape that reflects normal curvature of the spine and thus compensates for the excessive curvature of a spine affected by scoliotic pathologies.
    However, the fixation of these rods to the vertebrae of the spinal column is complicated because it makes it necessary to make holes for placing the rods, and above all the rods themselves must be bent beforehand and then fixed to the spine, without the possibility of may have to correct the curvature when the bars are attached to the spine. This fact necessarily implies that one must make an absolutely precise curve, with the difficulties that this entails.
    The main function of the present invention is to realize a device for the correction of spinal deformation that allows for easy attachment to the vertebrae of the spine.
    In the context of this function, one of the objects of the invention is to realize a device for correcting the deformation of the spinal column with which it will be possible to use cross-stabilization systems which are connected to the bars for a general stabilization of the spine. design.
    Another object of the invention is to realize a device for correcting spinal deformation that can be placed just as well on the lumbar level as on the breast level. Another object of the invention, which is not the last, is to realize a device for correcting spinal deformation that will be very reliable, relatively easy to manufacture and at a competitive price.
    This function, as well as these purposes and others which will become apparent from the following, are obtained thanks to a device for correcting deformation of the spinal column, characterized in that it comprises at least one shank-shaped element intended to be hooked to the spinal column, hooking means which are provided with a hook-shaped part for hooking to the vertebrae of the vertebral column, and a cavity intended for receiving the shaft-shaped element, wherein securing means are present for securing the shaft-shaped element in the cavity.
    Other features and advantages of the invention will become better apparent from the following description of some exemplary embodiments with reference to the accompanying drawing, in which: - figure 1 shows a perspective view of a peduncular hook that forms part of the device for correcting distortion of the spine according to the invention; figure 2 shows a planar perspective view. hook according to the invention; figure 3 shows a perspective view of a shifted flat hook according to the invention; figure 4 shows a screw to be inserted through the pedunculus, used in the device according to the invention; figure 5 shows a sacral screw used in the device according to the invention; figure 5a shows another view of the sacral screw shown in figure 5; Fig. 6 shows a correction rod for deformation used in the device according to the invention; figure 7 shows a stabilization bar with associated hooks; Figure 8 is a perspective view of an application of the device according to the invention to a portion of the spine; Figure 9 is a perspective view of an intersomatic device used in conjunction with the correction rod for deformation, according to the invention.
    Referring to these drawings, the device according to the invention comprises means for correcting the deformation of the vertebral column, formed by an element in the form of a shaft (rod), intended to be hooked to the vertebrae and for correcting on these vertebrae effect for distortion.
    The shaft-shaped element is attached to the vertebrae by hook means which are provided at one end with a hook part which is intended to hook onto the vertebrae of the vertebral column, and a cavity for the shaft-shaped element.
    The shaft-shaped element is shown in detail in Figure 6 and is indicated by the reference numeral 1. This shaft-shaped element has an outer surface which is marked by grooves parallel to the center line which promote the fixation in the cavity of the hook means, as will be described in further detail. are being displayed.
    The shaft-shaped element 1 can be modeled to adapt to the anatomical curve of the spine and to the correction required in the operation phase. Preferably it is made from titanium.
    The means for hooking the shaft-shaped element 1 are shown in Figures 1, 2, 3, 4, 5 and 5a. These hooking means, the different embodiments of which are shown in Figures 1, 2 and 3 as regards the means for hooking the shaft-shaped element 1 to the vertebrae, and in Figures 4, 5 and 5a as regards the means suitable for hooking of the shaft-shaped element on the vertebrae themselves, are indicated by the numeral 10 for the first and 20 for the second.
    The hooking means 10 thus comprise a lower part 11 which is hook-shaped and is intended to enable anchoring to the vertebrae. The hooking means 10 further comprise a cavity 12 suitable for receiving the shank-shaped element 1, and this shank-shaped element is thus fixed by fixing means formed by a screw 13 which, when tightened, presses against the shank-shaped element 1 which is accommodated in the cavity at position 12.
    In this way, when the screw is loosened, the insertion of the shaft-shaped element 1 takes place at the location 12, and once that shaft-shaped element 1 is in place, the screw 13 is tightened around the shaft-shaped element 1 in the cavity to fix, and thus to fix the anchoring means 10 in the position of anchoring to the vertebrae, arranged at mutual distances along the shaft-shaped element 1, whereby this element can be fixed to the vertebrae and the desired correction action can be exerted.
    Figure 1 shows a first embodiment of the hooking means 10, the placement of which takes place after resection of the caudal portion of the lower joint mass.
    Figure 2 shows a second embodiment of the hooking means 10 in which, in a similar manner as in Figure 1, a part is provided which is provided with a hook 11, a cavity 12 and a fixing nut 13. Unlike the embodiment shown in Figure in Figure the portion provided with a hook 11a is not forked, as shown in Figure 1, but embodied as a whole part.
    Figure 3 shows a third embodiment of the hooking means 10 and in this case the hooked portion, indicated by the number 11b, is narrower than the corresponding hooking portion 11 and 11a in Figures 1 and 2, respectively. While the hooking means 10 of the embodiment of Figure 2 are preferably used for chest and lumbar regions of the spine, the hooking means 10 of Figure 3 are preferably used for anchoring to transverse protrusions of the spine.
    In the three embodiments of Figures 1 to 3, the hooking means 10 have a hooked portion 11, 11a and 11b with the hollow side arranged in the same direction as the cavity of the shank-shaped element 1 in the cavity 12. In practice, the cavity 12 is arranged with its axis parallel to the axis passing through the center of the cavity of the portion with the hook.
    Hooking means are conceivable in which these axes do not run parallel to each other, depending on the placement of the shaft-shaped element 1 that one wants to obtain.
    Figure 4 and Figures 5-5a respectively show a first and a second embodiment of hooking means for the shaft-shaped element 1 on the vertebrae. These hooking means comprise peduncular cap screws 30, equipped with a cavity 31 intended to accommodate the shank-shaped element and the fixing thereof with the aid of a nut 32 screwed onto an upper threaded part 33 of the screw 30.
    To this end, in order to be able to insert the peduncular screws 30, it is necessary to find the marks of the vertebral pedunculus, then to make a hole with a punch with a depth of approximately 1 cm and insert the peduncular screw 30 therein and tighten it to the truncated cone-shaped portion 34 of the body of the screw is completely in the bone.
    Depending on the type of placement of the screw that one wishes to obtain, and thus on the resultant fixation for the shank-shaped element 1 in the cavity 31 of the screw 30, it is possible to use screws with a body part which has an angle with respect to the axis passing through the center of the securing element 32. This embodiment of the screw 30 is shown in Figure 5, and here the screw is indicated by the number 30a. As can be seen, the body of the screw has an angle with respect to the axis passing through the center of the element 32 and the functions of the cavity 31 and of the nut are the same as shown in Figure 4.
    The device for correcting the deformation of the spinal column according to the invention further provides for the use of transverse stabilization elements formed by another shaft-shaped element 40 intended to be hooked transversely with respect to the shaft-shaped elements 1 which are arranged in the longitudinal direction along the patient's spine.
    The shaft-shaped elements 40 are intended to be anchored to the shaft-shaped elements 1 by anchoring means 45, formed by hooks, the special feature of which is that two cavities are provided for the shaft-shaped elements 1 and for the shaft-shaped elements 40.
    Thus, as shown in Figure 7, a first location 46 is provided with the anchoring means 45, intended for accommodating the shaft-shaped elements 1, and a second location, arranged above the first location, and suitable for accommodating the shaft-shaped element 40, such as that the two shaft-shaped elements 40 and 1 are mutually perpendicular. A fixing nut 47 is provided for fixing the element 40 in the second cavity.
    Figure 8 shows a perspective view of the placement of the shaft-shaped elements 1 along the vertebral column with the associated securing systems that make it possible to secure the shaft-shaped elements to the vertebra and thus indicate the desired curvature to follow the course of the vertebral column.
    Finally, Figure 9 shows a spacer 50 intended to be placed between an intervertebral disc and a neighboring specimen. This spacer element 50 is formed by a block-shaped body, the vessels 51 of which are arranged along its length, and whose edges of the opposite hollow surfaces 51 are provided with a plurality of teeth 52 which are angled and are suitable for fixing the spacer element 50 when the latter is inserted between an intervertebral disc and the neighboring disc.
    The open planes 51 enable intersomatic arthrodesis, thanks to the insertion of a bone matrix into the spacer 50.
    In practice, the placement of the shaft-shaped elements 1 along the vertebral column and the associated anchoring thereof to the vertebra, as well as the fixation by the peduncular screws, make it possible to perform a tensile force or a distraction of the vertebrae of the vertebral column and hence a obtain distortion correction to remedy pathologies, for example scoliotic pathologies, which may affect the spine.
    The deformation correction device according to the invention has unquestionable advantages over the known solutions, because the curvature of the shaft-shaped elements 1 can be carried out directly when they are inserted into their respective cavities in the hooking means 10, which are fixed with a portion provided with a hook at the vertebrae. This therefore makes it possible to avoid having to bend the shaft-shaped elements 1 in advance, with the resulting difficulty in choosing the optimum curvature.
    With the device according to the invention, this curvature is realized directly during the placing of the device, and by the simplicity of hooking the shaft-shaped element 1 to the vertebrae by the hooking means 10, the entire procedure is simplified with respect to the procedures used for the known distortion correction devices.
    It has been found in practice that the device according to the invention fully fulfills the assigned role, because it makes it possible to perform a correction for the deformation of the patient's spine, simple and efficient, while an accuracy of the curvature of the shaft-shaped elements can be obtained that are better than those which can be obtained with the known devices. Furthermore, due to the simplification of the hooking means, an optimum hooking can be obtained to the vertebrae and also an optimum and simple placement of the shaft-shaped elements in the cavities intended for this purpose.
    The device designed for correcting a deformation can be modified and varied in numerous ways within the scope of the inventive concept.
    For example, the hooking means 10 may be present either in a right-hand version or in a left-hand embodiment, based on the location of the hooking means relative to the location of the shaft-shaped elements.
    In practice, materials and dimensions of any nature can be used, depending on the needs and the state of the art, provided they are compatible with the specific use.
    权利要求:
    Claims (15)
    [1]
    Device for correcting spinal deformation, characterized in that it comprises at least one shaft-shaped element (1) intended to be hooked to the spinal column, hooking means (10) provided with a hook-shaped portion (11) for hooking to the vertebrae of the spinal column, and a cavity (12) intended for receiving the shaft-shaped element, wherein securing means (13) are provided for securing the shaft-shaped element in the cavity.
    [2]
    Device as claimed in claim 1, characterized in that the hook-shaped part has a cavity whose center line passing through its center is parallel to the center line of the cavity intended to receive the shaft-shaped element.
    [3]
    Device as claimed in claim 1 or 2, characterized in that the fixing means comprise a nut (13) which is intended to lie in the space occupied by the shaft-shaped element when the shaft-shaped element enters said cavity of the hooking means lies.
    [4]
    Device according to one of claims 1 to 3, characterized in that the shaft-shaped element (1) has a plurality of longitudinal grooves, parallel to the center line, to promote its fixation in the cavities of the hooking means.
    [5]
    Device according to one of claims 1 to 4, characterized in that it further comprises hooking means (20) for the shaft-shaped element on the vertebrae, formed by screws (30) which are provided with a threaded body for engaging in the bone and a cavity (31) for the shank-shaped element, with securing means (32) for securing the shank-shaped element in the cavity formed in the upper portion of the screw.
    [6]
    Device as claimed in claim 5, characterized in that the cavity of the shaft-shaped element which is arranged in the upper part of the screw is arranged such that the fixing means reduce the space available to the shaft-shaped element in its cavity.
    [7]
    Device as claimed in claim 5 or 6, characterized in that the fact that the threaded part of the body of the screw has the same axis as the fixing means.
    [8]
    Device as claimed in claim 5 or 6, characterized in that the axis of the threaded portion of the screw has an angle with respect to the axis passing through the center of the fixing means.
    [9]
    Device according to any one of the preceding claims, characterized in that it comprises transverse stabilizing means (40), intended to be hooked to the shaft-shaped elements arranged lengthwise on the spinal column.
    [10]
    Device according to claim 9, characterized in that the transverse stabilizing means comprise at least one other shaft-shaped element (40) intended to be placed perpendicular to the shaft-shaped element (1), wherein anchoring means (45, 46) are present for the anchoring from this other shaft-shaped element to the first shaft-shaped element.
    [11]
    Device according to claim 10, characterized in that the anchoring means (45; 46) comprise a hook portion that forms a first cavity (4 6) suitable for receiving the shank-shaped element (1), while a second cavity is formed above that first place for receiving the other shaft-shaped element (40), the first and second elements coming perpendicular to each other.
    [12]
    Device according to claim 11, characterized in that it comprises fixing means (47), suitable for allowing the fixation of the other shaft-shaped element (40) in the second cavity.
    [13]
    Device according to claim 1, characterized in that it comprises a spacer element (50) intended to be placed between two adjacent intervertebral discs.
    [14]
    Device according to claim 13, characterized in that the spacer element (50) is formed by a block-shaped body part whose lengths (51) are open to allow the insertion of a bone matrix into the spacer element.
    [15]
    Device according to claim 13, characterized in that the faces along the length of the spacer element are provided on the side of the openings of these faces with a plurality of teeth (52), intended to allow anchoring the spacer element between two adjacent intervertebral discs.
    类似技术:
    公开号 | 公开日 | 专利标题
    US5702452A|1997-12-30|Spinal osteosynthesis device with median hook and vertebral anchoring support
    US5514132A|1996-05-07|Spinal osteosynthesis device
    AU2005206822B2|2010-09-16|Pedicle screw constructs for spine fixation systems
    JP3854312B2|2006-12-06|Back vertebral surgical anchor device
    US6231610B1|2001-05-15|Anterior cervical column support device
    US5810815A|1998-09-22|Surgical apparatus for use in the treatment of spinal deformities
    US20210315711A1|2021-10-14|Systems and Methods for Treating Spinal Deformities
    US6589243B1|2003-07-08|Posterior backbone osteosynthesis device
    US6277120B1|2001-08-21|Cable-anchor system for spinal fixation
    JP4354825B2|2009-10-28|Spinal osteosynthesis device
    US5147360A|1992-09-15|Osteosynthesis device for the correction of spinal curvatures
    EP1600111B1|2007-01-03|Device for connecting the rod of a spinal osteosynthesis device to a vertebra, and osteosynthesis system comprising this device
    US20080177320A1|2008-07-24|Vertebral Rods and Methods of Use
    US20120065687A1|2012-03-15|Multi-Radius Vertebral Rod With a Varying Stiffness
    KR20060109426A|2006-10-20|Method for the correction of spinal deformities using rod- plates anterior system
    AU2008316641A1|2009-04-30|Surgical fixation system and related methods
    WO2009158622A1|2009-12-30|Posterior spinal prosthesis
    WO2007027209A1|2007-03-08|Multi-function orthopedic instrument
    EP2916752B1|2019-12-04|Adjusting spinal curvature
    US8641735B2|2014-02-04|Implantable longitudinal orthopedic supports for accommodating multiple anatomical support requirements
    NL1016722C2|2002-11-15|Device for correcting spinal deformation.
    US20160128844A1|2016-05-12|System and Method for Correcting Scoliosis
    US10893952B2|2021-01-19|Intervertebral fusion cage
    Klöckner et al.2003|Influence of a screw with a hinge on the pull-out force at the cranial end vertebra in ventral derotation spondylodesis |
    EP1703849A2|2006-09-27|Pedicle screw constructs for spine fixation systems
    同族专利:
    公开号 | 公开日
    NL1016722C2|2002-11-15|
    FR2817143B1|2005-05-13|
    FR2817143A1|2002-05-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2633177B1|1988-06-24|1991-03-08|Fabrication Materiel Orthopedi|IMPLANT FOR A SPINAL OSTEOSYNTHESIS DEVICE, ESPECIALLY IN TRAUMATOLOGY|
    FR2659225B1|1990-03-08|1995-09-08|Sofamor|TRANSVERSE FIXING DEVICE FOR PROVIDING A RIGID CROSS-LINK BETWEEN TWO RODS OF A SPINAL OSTEOSYNTHESIS SYSTEM.|
    DE4316542C1|1993-05-18|1994-07-21|Schaefer Micomed Gmbh|Osteosynthesis device|
    FR2715293B1|1994-01-26|1996-03-22|Biomat|Vertebral interbody fusion cage.|
    JP2960688B2|1996-06-07|1999-10-12|株式会社ロバート・リード商会|Bone fixation screw|
    FR2754170B1|1996-10-03|1998-12-24|Medinov Amp|INTERSOMATIC VERTEBRAL ARTHRODESIS PROSTHESIS|
    DE19738052C2|1997-09-01|2003-12-04|Pina Vertriebs Ag Neuhausen|Spinal insert body|US6656180B2|2001-09-05|2003-12-02|Stahurski Consulting Inc.|Apparatus for retaining vertebrae in a desired spatial relationship|
    US8075597B2|2005-09-23|2011-12-13|Applied Orthopaedics Llc|Apparatus for retaining vertebrae|
    法律状态:
    2002-08-01| AD1A| A request for search or an international type search has been filed|
    2003-01-06| PD2B| A search report has been drawn up|
    2012-06-13| V1| Lapsed because of non-payment of the annual fee|Effective date: 20120601 |
    优先权:
    申请号 | 申请日 | 专利标题
    NL1016722A|NL1016722C2|2000-11-28|2000-11-28|Device for correcting spinal deformation.|
    NL1016722|2000-11-28|NL1016722A| NL1016722C2|2000-11-28|2000-11-28|Device for correcting spinal deformation.|
    FR0101491A| FR2817143B1|2000-11-28|2001-02-05|DEVICE FOR CORRECTING THE DEFORMATION OF THE VERTEBRAL COLUMN|
    [返回顶部]