WO2017092000A1 - 一种万向弹性固定棒 - Google Patents

一种万向弹性固定棒 Download PDF

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Publication number
WO2017092000A1
WO2017092000A1 PCT/CN2015/096277 CN2015096277W WO2017092000A1 WO 2017092000 A1 WO2017092000 A1 WO 2017092000A1 CN 2015096277 W CN2015096277 W CN 2015096277W WO 2017092000 A1 WO2017092000 A1 WO 2017092000A1
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fixing rod
elastic fixing
deformation structure
shaped deformation
universal elastic
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PCT/CN2015/096277
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English (en)
French (fr)
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李照文
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李照文
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Priority to PCT/CN2015/096277 priority Critical patent/WO2017092000A1/zh
Publication of WO2017092000A1 publication Critical patent/WO2017092000A1/zh

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    • 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

Definitions

  • the invention relates to a universal elastic fixing rod, belonging to the technical field of human body built-in materials for medical instruments.
  • the relative kyphosis causes the inverted ligamentum flavum to open in reverse to reduce its invasion of the spinal canal, increase the volume of the spinal canal, restore the height of the intervertebral space, increase the area of the spinal canal and intervertebral foramen, and unload the posterior fiber.
  • the load on the ring reduces the small joint load of the corresponding segment. Postoperative patients recover quickly, the recurrence rate is low, the symptoms such as pain are relieved, and many advantages such as early bed-out activities and daily life recovery can be achieved.
  • the existing spinal dynamic internal fixators still have many defects, such as some fixators can only provide activities in a certain direction (such as Coflex can only provide sagittal extension and flexion); such as spring system retainer elastic decay Poor capacity and high production cost; if the elastic rod holder is cylindrical, although it can rely on the elasticity of the material itself for weak universal movement, its range of motion is small, only about 3 degrees, much smaller than the human spine extension. The range of activities such as flexion and rotation is difficult to guarantee very low complications and good long-term effects.
  • the object of the present invention is to provide a U-shaped deformation structure, a torsion connecting plate and a cylinder which are perpendicular to each other, and to fix the cylinder to the pedicle by tightening the nut and the fixing screw.
  • the vertical U-shape provides the vertical rotation activity
  • the horizontal U-shape provides the horizontal rotation activity
  • the torsion connection plate provides the torsional movement
  • the universal activity performance is 10,000.
  • the universal elastic fixing rod is composed of a U-shaped deformation structure, a torsion connecting plate and a cylinder, wherein the U-shaped deformation structure is composed of at least one vertical U shape and one horizontal U shape, when the U-shaped deformation structure is When the torsion connecting plates are respectively fixed on the two sides, the other end of the torsion connecting plate is respectively fixed with a cylindrical body; when one side of the U-shaped deformed structure is fixed with the torsion connecting plate, the other side of the U-shaped deformed structure is directly Cylinder connection.
  • the U-shaped deformation structure is formed in at least one of the fixing bars.
  • the central portion of the universal elastic fixing rod realizes elastic expansion between intervertebral joints or other bones through mutually perpendicular U-shaped deformation structures, and the vertical U shape provides vertical rotation activity, and the horizontal U shape provides horizontal rotation activity.
  • the torsion connecting plate provides the axial rotation of the torsional movement; it has sufficient universal elastic activity, and has strong anti-elastic attenuation ability after surgery, and can be fixed on the lumbar vertebrae, the thoracic vertebrae, the cervical vertebrae lesion segment and the ends of the fracture dislocation.
  • FIG. 1 is a schematic front view showing a double U-shaped composition of a universal elastic fixing rod
  • FIG. 2 is a top plan view showing a double U-shaped composition of a universal elastic fixing rod
  • FIG. 3 is a schematic front view showing a three-U shape of a universal elastic fixing rod
  • FIG. 4 is a top plan view showing a three-U-shaped composition of a universal elastic fixing rod
  • Figure 5 is a front view showing the structure of a four-shaped U-shaped elastic rod
  • FIG. 6 is a top plan view showing a four-U-shaped composition of a universal elastic fixing rod
  • FIG. 7 is a schematic front view showing a structure in which two U-shaped deformation structures are formed in a universal elastic fixing rod;
  • FIG. 8 is a top plan view showing a U-shaped deformation structure in a universal elastic fixing rod
  • Figure 9 is a top plan view showing the fixing by a connecting rod when two universal elastic fixing rods are used;
  • Fig. 10 is a structural schematic view showing the combination of strong fixation and dynamic fixation of a universal elastic fixing rod.
  • the universal elastic fixing rod is composed of a U-shaped deformation structure, a torsion connecting plate 3 and a cylinder 4, and the cylinder 4 is fixed by a tightening nut 5 and a fixing screw 6, wherein the U-shaped deformation structure is composed of at least one A vertical U-shape 1 and a horizontal U-shaped 2 are formed.
  • the torsion connecting plates 3 are respectively fixed on both sides of the U-shaped deformation structure, the other ends of the torsion connecting plates 3 are respectively fixed with a cylinder 4; when the U-shaped deformation structure When one side of the U-shaped deformed structure is fixed to one side, the other side of the U-shaped deformed structure is directly connected to the cylindrical body 4.
  • the vertical U-shape 1 provides vertical rotational activity
  • the horizontal U-shape 2 provides horizontal rotational activity
  • the torsion link 3 provides axial torsional movement.
  • the U-shaped deformation structure is formed in at least one of the fixing bars.
  • the two universal elastic fixing rods are used in parallel, they are coupled and fixed by the connecting rod 7.
  • the universal elastic fixing rod can also be used for the combination of strong fixing and dynamic fixing, that is, one or more segments.
  • the cylinder row is firmly fixed, and the adjacent segments are dynamically fixed by a U-shaped deformation structure, a torsion connecting plate, and a portion of the cylinder. (See Figures 1 to 10).
  • the layer is cut layer by layer to expose the bone of the pedicle into the nail region, and the two screws are screwed into the upper and lower pedicles. 6.
  • the multi-segment is fixed, screw in a plurality of fixing screws 6, and then insert the cylindrical body 4 of the universal elastic fixing rod into the rear groove of the fixing screw 6, and open the fixing screw 6 with the opening rod.
  • the tightening nut 5 is finally tightened to fasten the cylinder 4 to the fixing screw 6 to complete the installation; when two universal elastic fixing rods are required to be used in parallel, the two universal elastic fixing rods can be connected The rods 6 are joined together to increase the stability.
  • the universal elastic fixing rod can realize the forward flexion, the backward extension, the left and right side bending and the rotation of the surgical segment in the sagittal position by the elastic movement of the vertical U shape 1, the horizontal U shape 2 and the torsion connecting plate 3.
  • Elastic activity; full elastic activity, strong postoperative anti-elastic attenuation, can be used for one segment of the spine, can also be used for multiple segment fixation, can also be used for combination of strong fixation and dynamic fixation, and can also be used for fracture and dislocation Dynamically fixed.

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  • 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)
  • Prostheses (AREA)

Abstract

一种万向弹性固定棒，由U形变形结构、扭转连接板（3）和圆柱体（4）构成。U形变形结构由至少一个垂直U形（1）和一个水平U形（2）构成。当U形变形结构的两侧固接有扭转连接板（3）时，扭转连接板（3）的另一端固接有圆柱体（4）。当U形变形结构的一侧固接有扭转连接板（3）时，U形变形结构的另一侧直接与圆柱体（4）连接。该万向弹性固定棒能实现手术节段在矢状位上的前屈、后伸、左右侧弯与旋转等各方向的弹性活动，并且弹性活动充分，术后抗弹性衰减能力强。该万向弹性固定棒可用于脊柱的一个节段或多个节段，也可用于骨折脱位的动态固定。该万向弹性固定棒解决了目前使用的各种动态脊柱内固定物不能保留脊柱在各方向上充分的弹性活动，以及抗弹性衰减能力弱的问题。

Description

一种万向弹性固定棒 技术领域
本发明涉及一种万向弹性固定棒，属医疗器械的人体内置入物技术领域。
背景技术
目前，脊柱融合技术在治疗脊柱疾病，尤其是下腰痛和腰椎不稳方面取得了较好的疗效，融合率达90％以上。但有研究表明，其临床疗效并未达到期望值；而且坚强内固定和脊柱融合术存在加速邻近节段退变、内固定失败、术后假关节形成等并发症的可能。鉴于此，脊柱动态固定正在成为近年来治疗退行性腰椎疾病比较热门的一种技术。动态内固定系统的植入在不牺牲脊柱即刻稳定性的前提下将其动态固定，术后可分散坚固内固定的负荷传导，避免应力遮挡，棘间产生的撑开力可在手术节段产生相对的后凸，使内折的黄韧带反向张开以减少其对椎管的侵入，增大椎管容积，还可恢复椎间隙高度,增加椎管及椎间孔的面积、卸载后方纤维环的负荷，减少相应节段小关节载荷。术后患者恢复迅速，复发率低，疼痛等症状缓解显著，可早期下床活动、恢复日常生活等诸多优点。但现有的脊柱动态内固定器尚存在不少缺陷，如有的固定器只能提供某一方向上的活动(如Coflex只能提供矢状位的伸屈)；如弹簧系统固定器抗弹性衰减能力差，且制作成本很高；如弹性棒固定器呈圆柱形，虽然能依靠材料本身的弹性进行微弱的万向活动，但其活动范围较小，只有约3度左右，远小于人体脊柱伸屈、旋转等活动范围，难以保证很低的并发症及很好的远期效果。
发明内容
本发明的目的在于，针对上述现有技术的不足，提供一种采用互相垂直的U形变形结构、扭转连接板和圆柱体组成的，通过拧紧螺帽和固定螺钉将圆柱体固定于椎弓根、椎体、棘板间以及人体其它部位骨质上，由垂直U形提供垂直方向的旋转活动，水平U形提供水平方向的旋转活动，扭转连接板提供扭转活动，具有万向活动性能的万向弹性固定棒。
本发明是通过如下的技术方案来实现上述目的的：
该万向弹性固定棒由U形变形结构、扭转连接板、圆柱体构成，其特征在于：所述的U形变形结构由至少一个垂直U形和一个水平U形构成，当U形变形结构的两侧分别固接有扭转连接板时，扭转连接板的另一端分别固接有圆柱体；当U形变形结构的一侧固接有扭转连接板时，U形变形结构的另一侧直接与圆柱体连接。
所述的U形变形结构在固定棒中至少制作有一个。
该万向弹性固定棒采用二根并列使用时，通过连接杆联接固定。
本发明与现有技术相比的有益效果在于：
该万向弹性固定棒的中部通过相互垂直的U形变形结构实现椎节间或其它骨质间的弹性撑开，其垂直U形提供垂直方向的旋转活动，水平U形提供水平方向的旋转活动，扭转连接板提供轴向旋转的扭转活动；具有能充分的万向弹性活动，术后抗弹性衰减能力强，可固定于腰椎、胸椎、颈椎的病变节段及骨折脱位的两端等优点。解决了目前使用的各种动态脊柱内固定物不能保留脊柱在各方向上充分的弹性活动或对各方向的活动进行弹性限制，以及抗弹性衰减能力弱的问题；也解决了现有髓内钉及钢板等静态固定不利于骨折愈合的问题。
附图说明
图1为一种万向弹性固定棒的双U形组成的主视结构示意图；
图2为一种万向弹性固定棒的双U形组成的俯视结构示意图；
图3为一种万向弹性固定棒的三U形组成的主视结构示意图；
图4为一种万向弹性固定棒的三U形组成的俯视结构示意图；
图5为一种万向弹性固定棒的四U形组成的主视结构示意图；
图6为一种万向弹性固定棒的四U形组成的俯视结构示意图；
图7为一种万向弹性固定棒中制作有两个U形变形结构的主视结构示意图；
图8为一种万向弹性固定棒中制作有两个U形变形结构的俯视结构示意图；
图9为使用两个万向弹性固定棒安装时通过连接杆固定的俯视结构示意图；
图10为一种万向弹性固定棒的坚强固定与动态固定相结合的结构示意图。
图中：1、垂直U形，2、水平U形，3、扭转连接板，4、圆柱体，5、拧紧螺帽，6、固定螺钉，7、连接杆。
具体实施方式
该万向弹性固定棒由U形变形结构、扭转连接板3、圆柱体4构成，圆柱体4通过拧紧螺帽5和固定螺钉6固定，其特征在于：所述的U形变形结构由至少一个垂直U形1和一个水平U形2构成，当U形变形结构的两侧分别固接有扭转连接板3时，扭转连接板3的另一端分别固接有圆柱体4；当U形变形结构的一侧固接有扭转连接板4时，U形变形结构的另一侧直接与圆柱体4连接。所述的垂直U形1提供垂直方向的旋转活动，水平U形2提供水平方向的旋转活动，扭转连接板3提供轴向扭转活动。
所述的U形变形结构在固定棒中至少制作有一个。该万向弹性固定棒采用二根并列使用时，通过连接杆7联接固定。
该万向弹性固定棒还可同时用于坚强固定与动态固定相结合，即一个或多个节段以 圆柱体行坚强固定，而与之相邻的节段则利用U形变形结构、扭转连接板、圆柱体构成的部分行动态固定。(参见附图1～10)。
该万向弹性固定棒植入退变性腰椎疾患病人的人体时，逐层切开，显露需暴露的椎弓根进钉区等骨质，先往上、下椎弓根拧入二枚固定螺钉6，如果是多节段固定则要拧入多枚固定螺钉6，再将该万向弹性固定棒的圆柱体4装入固定螺钉6的尾部槽内，用撑开杆将固定螺钉6撑开到合适间距，最后拧紧拧紧螺帽5将圆柱体4固紧在固定螺钉6上便完成安装；当需要二根万向弹性固定棒并列使用时，二根万向弹性固定棒之间可通过连接杆6联接成一整体，以增加稳固性。
该万向弹性固定棒通过垂直U形1、水平U形2和扭转连接板3的弹性活动，能实现手术节段在矢状位上的前屈、后伸、左右侧弯与旋转等各方向的弹性活动；其弹性活动充分，术后抗弹性衰减能力强，可用于脊柱的一个节段，也可用于多个节段固定，还可用于坚强固定与动态固定相结合，也可用于骨折脱位的动态固定。
以上所述只是本发明的较佳实施例而已，上述举例说明不对本发明的实质内容作任何形式上的限制，所属技术领域的普通技术人员在阅读了本说明书后依据本发明的技术实质对以上具体实施方式所作的任何简单修改或变形，以及可能利用上述揭示的技术内容加以变更或修饰为等同变化的等效实施例，均仍属于本发明技术方案的范围内，而不背离本发明的实质和范围。

Claims (3)

  1. 一种万向弹性固定棒，它由U形变形结构、扭转连接板(3)、圆柱体(4)构成，其特征在于：所述的U形变形结构由至少一个垂直U形(1)和一个水平U形(2)构成，当U形变形结构的两侧分别固接有扭转连接板(3)时，扭转连接板(3)的另一端分别固接有圆柱体(4)；当U形变形结构的一侧固接有扭转连接板(3)时，U形变形结构的另一侧直接与圆柱体(4)连接。
  2. 根据权利要求1所述的一种万向弹性固定棒，其特征在于：所述的U形变形结构在固定棒中至少制作有一个。
  3. 根据权利要求1所述的一种万向弹性固定棒，其特征在于：所述的万向弹性固定棒采用二根并列使用时，通过连接杆(7)联接固定。
PCT/CN2015/096277 2015-12-03 2015-12-03 一种万向弹性固定棒 WO2017092000A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109549697A (zh) * 2019-01-28 2019-04-02 江苏嘉斯康医疗科技有限公司 一种手术用弹性棒

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Publication number Priority date Publication date Assignee Title
US20060142760A1 (en) * 2004-12-15 2006-06-29 Stryker Spine Methods and apparatus for modular and variable spinal fixation
WO2008082085A1 (en) * 2006-11-28 2008-07-10 Medyssey Co., Ltd. Rod multiaxiale connecting peidcle screws
CN201727574U (zh) * 2010-07-31 2011-02-02 李照文 棘旁万向动态辅助稳定器
CN102512232A (zh) * 2012-01-10 2012-06-27 李照文 棘间万向动态稳定器
CN202665671U (zh) * 2012-06-08 2013-01-16 浙江科惠医疗器械有限公司 用于脊柱固定的弹性连接棒
CN104323846A (zh) * 2014-11-27 2015-02-04 李照文 一种万向弹性固定棒
CN204246232U (zh) * 2014-11-27 2015-04-08 李照文 一种万向弹性固定棒

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060142760A1 (en) * 2004-12-15 2006-06-29 Stryker Spine Methods and apparatus for modular and variable spinal fixation
WO2008082085A1 (en) * 2006-11-28 2008-07-10 Medyssey Co., Ltd. Rod multiaxiale connecting peidcle screws
CN201727574U (zh) * 2010-07-31 2011-02-02 李照文 棘旁万向动态辅助稳定器
CN102512232A (zh) * 2012-01-10 2012-06-27 李照文 棘间万向动态稳定器
CN202665671U (zh) * 2012-06-08 2013-01-16 浙江科惠医疗器械有限公司 用于脊柱固定的弹性连接棒
CN104323846A (zh) * 2014-11-27 2015-02-04 李照文 一种万向弹性固定棒
CN204246232U (zh) * 2014-11-27 2015-04-08 李照文 一种万向弹性固定棒

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109549697A (zh) * 2019-01-28 2019-04-02 江苏嘉斯康医疗科技有限公司 一种手术用弹性棒

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