WO2018218489A1 - 骨固定装置 - Google Patents

骨固定装置 Download PDF

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Publication number
WO2018218489A1
WO2018218489A1 PCT/CN2017/086567 CN2017086567W WO2018218489A1 WO 2018218489 A1 WO2018218489 A1 WO 2018218489A1 CN 2017086567 W CN2017086567 W CN 2017086567W WO 2018218489 A1 WO2018218489 A1 WO 2018218489A1
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WIPO (PCT)
Prior art keywords
claw
fixed
movable
movable claw
connecting rod
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PCT/CN2017/086567
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English (en)
French (fr)
Inventor
唐佩福
郝明
张�浩
胡磊
王锟
曹延祥
赵燕鹏
Original Assignee
唐佩福
郝明
张�浩
胡磊
王锟
曹延祥
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Application filed by 唐佩福, 郝明, 张�浩, 胡磊, 王锟, 曹延祥 filed Critical 唐佩福
Priority to PCT/CN2017/086567 priority Critical patent/WO2018218489A1/zh
Publication of WO2018218489A1 publication Critical patent/WO2018218489A1/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

Definitions

  • the present invention relates to a bone fixation device, and more particularly to a temporary fixation device for a long bone fracture end.
  • FIG. 1 it is a drawing of CN203777030U.
  • the fixation claw 2 is first hooked from below to the bone to be fixed (not shown).
  • the bone to be fixed and its attached tissues such as muscle, fat, skin, and the like are sandwiched between the fixed claw 2 and the movable claw 1.
  • the movable claw 1 is pushed downward to withstand the bone to be fixed. If the downward movement of the movable claw is referred to as "push”, the upward movement of releasing the bone to be fixed opposite thereto may be referred to as "pull”.
  • push the upward movement of releasing the bone to be fixed opposite thereto
  • the present invention provides a bone fixation device comprising: a fixing claw with a center (for example, a geometric center) of a held section of a bone to be fixed as an origin O, the fixing claw facing the origin (O)
  • the angle of opening is greater than 180°, the fixed jaw defining a clamping plane P; an arcuate movable jaw capable of being in the functional position OP and the initial position IP, the movable jaw being in the clamping plane when in the functional position
  • the inner circumference of the movable claw and the inner circumference of the fixed claw sandwich the bone to be fixed; the fixed claw connecting rod connected to the fixed claw, which extends along the longitudinal direction Z of the rod a through hole; a movable claw connecting rod connected to the movable claw 21, and a movable claw handle connected to the movable claw connecting rod, the movable claw connected by manipulating the movable claw handle
  • the rod is rotatable and movable back and forth within the circular through hole; wherein the movable jaw is
  • the active jaw may first be in a suitable initial position that causes less trauma. Then, by rotating the movable claw connecting rod, the movable claw reaches the functional position, and cooperates with the fixed claw to sandwich the bone to be fixed.
  • the bone fixation device of the present invention does not require cutting all of the bone tissue in the depth direction, thus reducing the suffering of the patient.
  • Figure 1 is a drawing of a prior art push-pull bone fixation device
  • FIG. 2 is an exploded view of a fixed jaw related assembly and a movable jaw related assembly in an initial position, and a fastening reinforcement, etc., in accordance with an embodiment of the present invention
  • Figure 3 is also an exploded view of the embodiment of Figure 2 with the movable jaw assembly in a functional position;
  • Figure 4 is a combination view of the embodiment of Figure 2, wherein the movable jaw assembly is in an initial position;
  • Figure 5 is a combination view of the embodiment of Figure 2, wherein the movable jaw assembly is in a functional position;
  • Figure 6 is a schematic view of the rib of the movable claw handle and the groove of the fixed claw handle;
  • Figure 7 is a combination view of the embodiment shown in Figure 2, after the movable claw reaches the functional position, using the fastening reinforcement front front movable claw components;
  • Figure 8 is an enlarged view of the tapered front end of the fixed jaw.
  • a bone fixation device comprising: a fixing claw 11 with the center (e.g., geometric center) of the held section of the bone 90 to be fixed as the origin O
  • the fixing claw 11 opens at an angle greater than 180° to the origin O, the fixing claw 11 defines a clamping plane P; the curved movable claw 21 capable of being in the function position OP and the initial position IP, when it is in function In the position, the movable claw 21 is in the clamping plane P and the inner circumference of the movable claw 21 and the inner circumference of the fixed claw 11 clamp the bone to be fixed 90; and the fixed claw 11 is connected a fixed claw connecting rod 13 including a through hole 19 extending along a longitudinal direction Z of the rod; a movable claw connecting rod 23 connected to the movable claw 21, and a movable claw handle 25 connected to the movable claw connecting rod 23.
  • an innovation of the present invention is that by rotating the movable claw handle 25, the said The movable claw 21 rotates around the longitudinal direction Z of the rod, and the work is reached from the initial position IP Can be OP.
  • the use of the bone fixation device of the present invention does not require cutting all the bone tissue in the depth direction, greatly reducing the suffering of the patient, and is particularly suitable for performing minimally invasive surgery.
  • the length of the fixed claw connecting rod 13 is 8-20 cm.
  • the fixed length connecting rods 13 can be made with adjustable length sleeves to accommodate different lengths; a set of components can also be made that includes multiple components of different lengths for different patients.
  • the inventors of the present application noticed that the anteroposterior diameter of the upper middle and lower part of the adult femoral shaft was between 22 and 35 mm, and the anteroposterior diameter of the 5 cm femoral shaft under the Chinese small trochanter was 25.59 ⁇ 2.75 mm. .
  • the inventors of the present application selected the grip diameter of the bone fixation device, that is, the diameter of the substantially circular shape formed by the fixed claw and the movable claw, to be 20-40 mm, and the average value was 26mm. Further, in order to be adapted to be connected to other devices, the outer peripheral shape of the fixed claw connecting rod 13 may be formed in a rectangular shape.
  • the bone fixation device of the present invention may further comprise a fastening reinforcement 31, which in this example is a knob 31 that reinforces the fastening effect with a threaded structure.
  • the knob 31 is capable of advancing the movable claw connecting rod 23 in the longitudinal direction Z so that the movable claw 21 is pressed against the bone 90 to be fixed.
  • the movable claw handle 25 has been provided in the bone fixation device of the present invention, and by manipulating the movable claw handle 25, the movable claw 21 can be tightened to the bone 90 to be fixed. Therefore, as described in the above paragraph, the fastening reinforcement 31 is added only to further strengthen the fastening effect, rather than the necessary condition for clamping the bone.
  • the inner side of the fixed claw 11 and the movable claw 21 may form a micro rib or a micro protrusion to increase the frictional force.
  • the bone fixation device of the present invention may further include a fixed claw handle 15 connected to the fixed claw connecting rod 13.
  • the movable claw handle 25 of the bone fixation device of the present invention is an L-shaped handle (a T-shaped handle or the like can be regarded as a modification of the L-shaped handle), which includes a longitudinal direction along the rod Z.
  • the bottom section has a recess 151. Referring to FIG. 5, the recess 151 is capable of accommodating a lateral portion of the L-shaped handle 25 when the movable claw 21 is at the initial position IP.
  • the movable claw handle 25 By accommodating the movable claw handle 25 by providing the recess 151 at the bottom section of the fixed claw grip 15, the movable claw handle 25 can be placed in an appropriate preparation state. Referring to FIG. 4, when the movable claw grip 25 is accommodated in the recess 151, the movable claw 21 is at a specific angle and a specific front-rear position around the longitudinal direction Z of the lever. Before the recess 151 is released, the movable claw handle 25 cannot move back and forth in the longitudinal direction Z of the rod, and the reverse rod movement cannot be performed.
  • the bone fixation device of the present invention further provides an anti-rotation device after reaching the functional position, wherein one end of the movable claw handle 25 adjacent to the movable claw connecting rod 23 has a longitudinal direction a Z-extending rib 253; the first vertical section 156 of the U-shaped fixed jaw handle 15 is tubular in shape extending in the longitudinal direction Z and has a groove 153 extending in the longitudinal direction Z; wherein the movable claw 21 After reaching the function bit OP, the rib 251 is aligned with the groove 151. Thereby, the rib 253 can be pushed into the groove 153 to prevent the movable claw 21 from being inadvertently rotated. Further, referring to FIG.
  • the ribs and the grooves have a rectangular cross section for ease of processing.
  • the length of the rib 253 is 10-30 mm
  • the length of the groove 153 is 40-100 mm.
  • the anti-rotation device can also be formed by means of the movable claw handle 25.
  • a slit extending in the longitudinal direction Z of the rod may be formed at a suitable position of the fixed claw connecting rod 13, and when the movable claw handle 25 reaches the slit position (when the movable claw 21 reaches the functional position), the movable claw handle 25 can enter the slit. It is no longer possible to rotate around the longitudinal direction Z of the rod.
  • a mark may be provided only at the rib 253 and the groove 153 to indicate that the function bit is reached.
  • the second vertical section 158 of the U-shaped fixed jaw handle 15 of the bone fixation device of the present invention has a tubular shape extending in the longitudinal direction Z and has a thread; the fastening reinforcement 31 has a second vertical The threaded portion of the straight section 158 engages the bolt portion such that the fastening reinforcement 31 forms a threaded connection with the fixed jaw handle 15.
  • the movable claw handle 25 may be directly held by the fastening reinforcement 31, or may include an enlarged disc portion that abuts the fastening reinforcement 31 in a larger area. Thereby, the fastening reinforcement 31 can be rotated to cause the fixed claw handle 15 to move toward the movable claw handle 25, and finally the fixing claw 11 and the movable claw 21 firmly clamp the bone 90 to be fixed.
  • the specific position is intentionally selected as the initial position of the movable claw 21.
  • the bone fixation device of the present invention wherein, when in the initial position IP, the movable claw 21 is in the clamping plane P and adjacent to the fixed claw 11.
  • the movable claw 21 when the movable claw 21 is significantly smaller in size than the fixed claw 11, for example, it is smaller than 1/4 or even 1/8 of the circumference of the bone 90 to be fixed. Thereby, the movable claw 21 can be cut into the vicinity of the bone 90 to be fixed following the fixed claw 11, with little additional damage.
  • the initial bit IP in this example is 180 degrees out of phase with the function bit OP. Therefore, in practice, the initial bit IP can be set to 0 degrees ⁇ 10 degrees, and the function bit OP can be set to 180 degrees ⁇ 10 degrees.
  • the movable claw 21 can be disposed at the There is less damage or extra-bone tissue, from this position instead of the default initial bit IP to the function bit OP.
  • the fixing claw 11 in the bone fixation device of the present invention includes a wedge-shaped front end 111 having a lateral portion 113 on the outer peripheral side thereof.
  • the wedge shape is advantageous for reducing the resistance of the cut, and the ridge portion 113 is helpful for separating the periosteum and the muscle stop.
  • the fixing claws 11 of the present invention are integrally formed.
  • the fixed claw connecting rod 13 in the bone fixation device of the present invention has holes spaced apart in the longitudinal direction Z.
  • the spacing may be from 0.8 to 1.2 cm to aid in the fluid introduction.
  • the movable claw 21 in the bone fixation device of the present invention is connected to the movable claw connecting rod 23 by a pin or screwed for consideration of manufacturing cost and assembly difficulty, and the movable claw connecting rod 23 is
  • the movable claw handle 25 is integrally formed. Thereby, the movable claw connecting rod 23 and the movable claw handle 25 can be quickly assembled to the fixed claw connecting rod 13 by being inserted into the through hole of the fixed claw connecting rod 13. Thereafter, the movable claw 21 is connected to the movable claw connecting rod 23.
  • the fixing claw 11 is integrally formed with the fixed claw connecting rod 13 and the U-shaped handle 15.
  • a circular through hole may be formed in the movable claw connecting rod 23, and the fixed claw connecting rod 21 rotates in a circular through hole of the movable claw connecting rod 23.

Abstract

一种骨固定装置，包括：固定爪(11)，以待固定骨(90)的被固持截面的中心为原点(O)，固定爪(11)对原点(O)张开角度大于180°，固定爪(11)限定夹持平面(P)；能处于功能位(OP)和初始位(IP)的活动爪(21)，当处于功能位(OP)时，其处于夹持平面(P)内并且其内周与固定爪(11)内周将待固定骨(90)夹在中间；与固定爪(11)连接的固定爪连接杆(13)，其包括沿杆纵向(Z)延伸的通孔(19)；与活动爪(21)连接的活动爪连接杆(23)，及与活动爪连接杆(23)连接的活动爪把手(25)，通过操纵活动爪把手(25)，活动爪连接杆(23)能在通孔(19)内转动和前后移动；通过转动活动爪把手(25)，使活动爪(21)绕杆纵向(Z)旋转，从初始位(IP)到达功能位(OP)。由于不必在深度方向上切开骨外组织，使用该骨固定装置来固定骨骼给患者带来的痛苦较小。

Description

骨固定装置 技术领域
本发明涉及骨固定装置，尤其是一种用于长骨骨折端的临时固定装置。
背景技术
在医疗实践中，对骨的抓持和复位一般需要使用骨固定装置，现有技术CN2708856Y、CN2848149Y、CN201586055U、CN202078380U、CN203089326U、CN203122608U、CN203183006U、CN203677346U、CN203777030U、CN204446061U、CN204581507U分别公开了中间部分为杆形的不同产品。尽管在其他方面有所区别，这些产品具有一个共同点，那就是其活动爪的运动均沿着杆的纵向方向前进或后退。
参考图1，其为CN203777030U的附图。在使用其中教导的骨固定装置时，首先让固定爪2从下方勾住其上方的待固定骨(未示出)。此时，待固定骨及其附着组织如肌肉、脂肪和皮肤等被夹在固定爪2和活动爪1之间。然后，通过转动调节手柄8，使活动爪1向下推进而顶住待固定骨。如果将活动爪的向下移动称之为“推”，则与之相反的松开待固定骨的向上移动可称之为“拉”。因此，对于CN 2037770 30U及其他上文中提及的现有技术产品，其均可归于“沿杆方向推拉活动爪”的骨固定装置。
使用上述骨固定装置，为了让活动爪能够前进夹住待固定骨，需要将活动爪移动路线上的肌肉组织等切开。以图1中现有技术骨固定装置为例，为了让活动爪1能够向下移动到夹住骨骼的功能位，需要切开那些位于较高的初始位置和较低的有效夹持位置之间的组织。这样的创伤，在宽度上等于活动爪1沿图1的左右方向的尺寸，在深度上等于皮肤、脂肪和肌肉厚度的总和。由于创伤的尺寸较大，增加了患者的痛苦。
发明内容
有鉴于此，本发明的目的是提出一种以不同的方式使活动爪达到功能位置的骨固定装置，以至少减轻现有技术的上述缺点。
为实现上述目的，本发明提供一种骨固定装置，其包括：固定爪，以待固定骨的被固持截面的中心(例如几何中心)为原点O，所述固定爪对所述原点(O)张开的角度大于180°，所述固定爪限定夹持平面P；能够处于功能位OP和初始位IP的弧形活动爪，当其处于功能位时，所述活动爪处于所述夹持平面P内并且所述活动爪的内周与所述固定爪的内周将所述待固定骨夹在中间；与所述固定爪连接的固定爪连接杆，其包括沿着杆的纵向Z延伸的通孔；与所述活动爪21连接的活动爪连接杆，以及与所述活动爪连接杆连接的活动爪把手，通过操纵所述活动爪把手，所述活动爪连接 杆能够在所述圆形通孔内转动和前后移动；其中，通过转动所述活动爪把手，使所述活动爪绕杆的纵向Z旋转，从所述初始位IP到达所述功能位OP。
在使用时，根据患者的待固定骨的情况，活动爪可以首先处于引起的创伤较小的适当初始位。然后，通过转动活动爪连接杆，使活动爪到达功能位，与固定爪协作将待固定骨夹在中间。相比于现有技术，本发明骨固定装置不需要在深度方向上切开所有骨上组织，因此减少了患者的痛苦。
附图说明
参考附图和说明书可以更好地理解本发明。附图中的部件不一定按比例绘制，其用意仅在于阐明本发明的原理。在附图中：
图1为现有技术推拉式骨固定装置的附图；
图2为根据本发明的一个实施例的分解图，包括固定爪相关组件和处于初始位的活动爪相关组件，以及紧固加强件等；
图3也是图2所示实施例的分解图，其中活动爪组件处于功能位；
图4为图2所示实施例的组合图，其中活动爪组件处于初始位；
图5为图2所示实施例的组合图，其中活动爪组件处于功能位；
图6为活动爪把手的凸棱与固定爪把手的沟槽相配合的示意图；
图7为图2所示实施例的组合图，当活动爪到达功能位后，使用紧固加强件前顶活动爪各组件；以及
图8为固定爪的楔形前端的放大图。
具体实施方式
下面的说明涉及根据本发明的一个实施例的骨固定装置，如图2-5所示，其包括：固定爪11，以待固定骨90的被固持截面的中心(例如几何中心)为原点O，所述固定爪11对所述原点O张开的角度大于180°，所述固定爪11限定夹持平面P；能够处于功能位OP和初始位IP的弧形活动爪21，当其处于功能位时，所述活动爪21处于所述夹持平面P内并且所述活动爪21的内周与所述固定爪11的内周夹持所述待固定骨90；与所述固定爪11连接的固定爪连接杆13，其包括沿着杆的纵向Z延伸的通孔19；与所述活动爪21连接的活动爪连接杆23，以及与所述活动爪连接杆23连接的活动爪把手25，通过操纵所述活动爪把手25，所述活动爪连接杆23能够在所述通孔19内转动和前后移动；本发明的创新之处在于，通过转动所述活动爪把手25，使所述活动爪21绕杆的纵向Z旋转，从所述初始位IP到达所述功能位OP。
由于本发明的活动爪是转动到达功能位的，因此使用本发明骨固定装置不需要在深度方向上切开所有骨上组织，极大地减少了患者的痛苦，尤其适用于完成微创手术。
由于不同患者的骨上组织厚度不同，固定爪连接杆13的长度为8-20cm。可以用长度可调的套筒来制作固定爪连接杆13以适应不同长度；也可以制作一套组件，其包括长度不同的多个组件以适用于不同患者。此外，当用于股骨的固定时，本申请的发明人注意到成人股骨干上中下部的前后径范围在22-35mm之间，同时中国人小转子下5cm股骨干前后径为25.59±2.75mm。鉴于金属部件在受力状态下会出现弹性形变，本申请的发明人将骨固定装置的夹持口径，即固定爪与活动爪形成的大体圆形的直径，选为20-40mm，平均值为26mm。另外，为了适于和其他设备接驳，固定爪连接杆13的外周形状可形成为长方形。
优选地，为了获得更牢固的夹持效果，本发明的骨固定装置还可以包括紧固加强件31，其在本例中为利用螺纹结构加强紧固效果的旋钮31。所述旋钮31能够在纵向Z上上使所述活动爪连接杆23前移，使所述活动爪21顶紧所述待固定骨90。
需要指出的是，在本发明骨固定装置中已经提供了活动爪把手25，而通过操纵所述活动爪把手25，能够将所述活动爪21顶紧到待固定骨90上。因此，如上段中所述，紧固加强件31的加入仅仅是为了进一步加强紧固效果，而非夹紧骨骼的必要条件。
另外，为了加强夹持效果，固定爪11和活动爪21的内侧可形成微型棱或微型突点，以提高摩擦力。
优选地，为了便于使用者抓牢固定爪11来操纵活动爪21，本发明的骨固定装置还可以包括与固定爪连接杆13连接的固定爪把手15。
作为适于操纵的可选形状之一，本发明的骨固定装置的所述活动爪把手25为L形把手(T形把手等等可视为L形把手的变型)，其包括沿杆纵向Z延伸的部分和垂直于纵向Z延伸的横向部分；同时，所述固定爪把手15为U形，包括靠近所述固定爪连接杆13的第一竖直段156、远离所述固定爪连接杆13的第二竖直段158，以及连接所述第一竖直段和第二竖直段的与杆纵向Z平行的底段。所述底段具有凹陷151。参考图5，当活动爪21处于初始位IP时，所述凹陷151能够容纳所述L形把手25的横向部分。
通过在固定爪把手15的底段提供凹陷151来容纳活动爪把手25，可以让活动爪把手25处于适当的准备状态。参考图4，当活动爪把手25被容纳在凹陷151中时，活动爪21处于绕杆的纵向Z的特定角度和特定前后位置。在脱离凹陷151前，活动爪把手25无法沿杆的纵向Z前后移动，也无法进行反向的绕杆运动。
参考图5和图6，优选地，本发明的骨固定装置还提供一种到达功能位后的防转动装置，其中所述活动爪把手25的靠近所述活动爪连接杆23的一端具有沿纵向Z延伸的凸棱253；所述U形的固定爪把手15的第一竖直段156为沿纵向Z延伸的管形，并具有沿纵向Z延伸的沟槽153；其中当所述活动爪21到达所述功能位OP后，所述凸棱251与所述沟槽151对准。由此，凸棱253可以被推入沟槽153中，而防止活动爪21被不经意转动。此外，参考对应于初始位IP的图4，当所述活动爪21在所述初 始位IP时，由于凸棱253对应的位置并非沟槽153，因此，活动爪连接杆23不会被误推而靠近骨。如图6所示，优选地，为了加工的简便，凸棱和沟槽的横断面为矩形。另外，作为可用的尺寸，凸棱253的长度为10-30mm，沟槽153的长度为40-100mm。
需要指出的是，也可以借助于所述活动爪把手25来形成防转动装置。例如可以在固定爪连接杆13的适当位置形成沿杆的纵向Z延伸的切口，当活动爪把手25到达该切口位置时(此时活动爪21到达功能位)，活动爪把手25可进入切口而无法再绕杆的纵向Z转动。
另外，也可以仅用标记来提示功能位的到达。可以仅在凸棱253和沟槽153处设置标记，以表明到达了功能位。
优选地，本发明的骨固定装置的U形固定爪把手15的第二竖直段158为沿纵向Z延伸的管形，并具有螺纹；所述紧固加强件31具有与所述第二竖直段158的螺纹相配合的螺栓部，使得所述紧固加强件31与所述固定爪把手15形成螺纹连接。活动爪把手25可以直接被所述紧固加强件31顶住，或者可包括扩大的圆盘部以更大面积对接所述紧固加强件31。由此，紧固加强件31可以旋转而使固定爪把手15与活动爪把手25产生相向运动，最终使固定爪11和活动爪21牢固地夹紧待固定骨90。
优选地，在待固定骨的周围组织基本完好的情况下，为了使创伤最小化，而有意选择特定位置为活动爪21的初始位。具体地说，本发明的骨固定装置，其中当处于所述初始位IP时，所述活动爪21处于所述夹持平面P内并与所述固定爪11相邻。如本例所示，活动爪21尺寸可明显小于固定爪11时，例如小于待固定骨90的周长的1/4甚至1/8。由此，活动爪21可跟随固定爪11切入到待固定骨90附近，几乎不产生额外的破坏。
将图2和图3相对比，以及将图4和图5相对比，可以看出本例中的初始位IP与功能位OP相差180度。因此，实践中可以将初始位IP设定为0度±10度，将功能位OP设定为180度±10度。
需要指出的是，如果待固定骨90的特定邻近部位已受到严重伤害而损失了其上的骨外组织或者其原始解剖结构在该处的骨外组织较少，则活动爪21可设置在该损伤处或骨外组织较少处，从该位置而非默认的初始位IP转到功能位OP。
参考图7，当活动爪21到达功能位后，使用紧固加强件31前顶活动爪把手25、活动爪连接件23，最终将活动爪21紧紧顶在待固定骨90上。
参考图8，优选地，本发明的骨固定装置中的固定爪11包括楔形前端111，所述楔形前端111的外周侧具有横纹部113。当所述固定爪11切入患者待固定骨附近时，楔形形状有利于减小切入的阻力，而横纹部113则有助于分离骨膜和肌肉止点。优选地，本发明的固定爪11为一体形成。
优选地，本发明的骨固定装置中的所述固定爪连接杆13具有沿纵向Z隔开的孔。所述间隔可以为0.8-1.2cm，用来帮助引流体液。
参考图2，出于对制造成本和组装难度的考量，本发明的骨固定装置中的所述活动爪21通过插销或螺纹连接到所述活动爪连接杆23，所述活动爪连接杆23与所述活动爪把手25一体形成。由此，通过插入到固定爪连接杆13的通孔中，活动爪连接杆23和活动爪把手25可以被迅速组装到固定爪连接杆13上。之后，再将活动爪21连接到活动爪连接杆23。
参考图2，出于对制造成本和机械性能的考量，在本发明的骨固定装置中，所述固定爪11与所述固定爪连接杆13以及所述U形把手15一体形成。
最后，作为说明书的前述实例的变型，圆形通孔可以形成在活动爪连接杆23中，而所述固定爪连接杆21在活动爪连接杆23的圆形通孔内转动。
尽管已经公开本发明的各种示例性实施例，但是本领域的普通技术人员将理解，在不偏离本发明的精神和保护范围的情况下，可以做出将实现本发明的某些优势的各种改变和改进。本领域的普通技术人员明显理解，可以适当地替代执行相同功能的其他部件。应当注意，参考具体附图说明的特征可以与其他附图的特征组合起来，即使在未明确提及的情况下。而且，本发明的方法可以在利用合适的处理器指令的所有软件实施或在利用硬件逻辑和软件逻辑的组合实现相同结果的混合系统中实施。发明概念的改进将由相关权利要求涵盖。

Claims (12)

  1. 一种骨固定装置，包括：
    固定爪(11)，以待固定骨(90)的被固持截面的中心为原点(O)，所述固定爪(11)对所述原点(O)张开的角度大于180°，所述固定爪(11)限定夹持平面(P)；
    能够处于功能位(OP)和初始位(IP)的弧形活动爪(21)，当其处于功能位时，所述活动爪(21)处于所述夹持平面(P)内并且所述活动爪(21)的内周与所述固定爪(11)的内周将所述待固定骨(90)夹在中间；
    与所述固定爪(11)连接的固定爪连接杆(13)，其包括沿着杆的纵向(Z)延伸的圆形通孔(19)；
    与所述活动爪(21)连接的活动爪连接杆(23)，以及与所述活动爪连接杆(23)连接的活动爪把手(25)，通过操纵所述活动爪把手(25)，所述活动爪连接杆(23)能够在所述圆形通孔(19)内转动和前后移动；
    其特征在于，通过转动所述活动爪把手(25)，使所述活动爪(21)绕杆的纵向(Z)旋转，从所述初始位(IP)到达所述功能位(OP)。
  2. 根据权利要求1所述的骨固定装置，还包括
    紧固加强件(31)，其能够在纵向(Z)上使所述活动爪连接杆(23)前移，使所述活动爪(21)顶紧所述待固定骨(90)。
  3. 根据权利要求2所述的骨固定装置，还包括
    与固定爪连接杆(13)连接的固定爪把手(15)。
  4. 根据权利要求3所述的骨固定装置，其中
    所述活动爪把手(25)为L形把手，具有垂直于纵向(Z)的横向部分；
    所述固定爪把手(15)为U形，具有靠近所述固定爪连接杆(13)的第一竖直段、远离所述固定爪连接杆(13)的第二竖直段，以及连接第一竖直段和第二竖直段的底段，所述底段具有凹陷(151)，所述凹陷(151)能够容纳所述L形把手的横向部分的至少一部分。
  5. 根据权利要求4所述的骨固定装置，其中
    所述活动爪把手(25)的靠近所述活动爪连接杆(23)的一端具有沿纵向(Z)延伸的凸棱(253)；
    所述U形的固定爪把手(15)的所述第一竖直段为沿纵向(Z)延伸的管形，并具有沿纵向(Z)延伸的沟槽(153)；
    其中当所述活动爪(21)处于所述功能位(OP)时，所述凸棱(253)与所述沟槽(153)对准。
  6. 根据权利要求4所述的骨固定装置，其中
    所述U形的固定爪把手(15)的所述第二竖直段为沿纵向(Z)延伸的管形，并具有螺纹；
    所述紧固加强件(31)具有与所述第二竖直段螺纹相对应的螺纹，使得所述紧固加强件(31)与所述固定爪把手(15)形成螺纹连接。
  7. 根据权利要求1或2所述的骨固定装置，其中当处于所述初始位(IP)时，所述活动爪(21)处于所述夹持平面(P)内并与所述固定爪(11)相邻。
  8. 根据权利要求1或2所述的骨固定装置，其中所述固定爪(11)包括楔形前端(111)，所述楔形前端(111)的外周侧具有横纹部(113)。
  9. 根据权利要求1或2所述的骨固定装置，其中所述固定爪连接杆(13)具有沿纵向(Z)间隔开的孔。
  10. 根据权利要求1或2所述的骨固定装置，其中所述活动爪(21)通过插销或螺纹连接到所述活动爪连接杆(23)，所述活动爪连接杆(23)与所述活动爪把手(25)一体形成。
  11. 根据权利要求1或2所述的骨固定装置，其中所述固定爪(11)与所述固定爪连接杆(13)以及所述固定爪把手(15)一体形成。
  12. 一种骨固定装置，其与权利要求1所述的骨固定装置的不同之处在于：所述圆形通孔形成在所述活动爪连接杆(23)中，所述固定爪连接杆(21)能够在所述圆形通孔内转动。
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR748901A (fr) * 1932-04-06 1933-07-13 Collin Et Cie Davier à mors orientable pour pose d'attelles
US4781182A (en) * 1986-10-03 1988-11-01 Purnell Mark L Apparatus and method for use in performing a surgical operation
CN2430120Y (zh) * 1999-06-25 2001-05-16 宋均城 一种新型三爪骨折复位固定器
US20020183759A1 (en) * 2001-05-29 2002-12-05 Green James M. Femur lever
CN201230896Y (zh) * 2008-03-06 2009-05-06 张明友 多向分体式持骨器
CN201375554Y (zh) * 2009-04-03 2010-01-06 张卫红 一种改进的可调试四爪骨折复位固定钳
CN202723932U (zh) * 2012-08-10 2013-02-13 贝朝涌 摆头式持骨钳
WO2013089590A1 (ru) * 2011-12-14 2013-06-20 Общество С Ограниченной Ответственностью "Орто-Сув" Комплект для экстракортикальной фиксации
CN203777030U (zh) * 2014-03-19 2014-08-20 胡金明 一种快速拆分组合式三爪骨折复位固定器
CN205569058U (zh) * 2016-03-29 2016-09-14 福建康博医疗科技有限公司 新型三爪持骨钳

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR748901A (fr) * 1932-04-06 1933-07-13 Collin Et Cie Davier à mors orientable pour pose d'attelles
US4781182A (en) * 1986-10-03 1988-11-01 Purnell Mark L Apparatus and method for use in performing a surgical operation
CN2430120Y (zh) * 1999-06-25 2001-05-16 宋均城 一种新型三爪骨折复位固定器
US20020183759A1 (en) * 2001-05-29 2002-12-05 Green James M. Femur lever
CN201230896Y (zh) * 2008-03-06 2009-05-06 张明友 多向分体式持骨器
CN201375554Y (zh) * 2009-04-03 2010-01-06 张卫红 一种改进的可调试四爪骨折复位固定钳
WO2013089590A1 (ru) * 2011-12-14 2013-06-20 Общество С Ограниченной Ответственностью "Орто-Сув" Комплект для экстракортикальной фиксации
CN202723932U (zh) * 2012-08-10 2013-02-13 贝朝涌 摆头式持骨钳
CN203777030U (zh) * 2014-03-19 2014-08-20 胡金明 一种快速拆分组合式三爪骨折复位固定器
CN205569058U (zh) * 2016-03-29 2016-09-14 福建康博医疗科技有限公司 新型三爪持骨钳

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