CN209186907U - 经皮推动器与多轴椎弓根螺钉 - Google Patents

经皮推动器与多轴椎弓根螺钉 Download PDF

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CN209186907U
CN209186907U CN201821252631.2U CN201821252631U CN209186907U CN 209186907 U CN209186907 U CN 209186907U CN 201821252631 U CN201821252631 U CN 201821252631U CN 209186907 U CN209186907 U CN 209186907U
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groove
side connecting
component
percutaneous
sliding
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托马斯·斯维尼
唐·堆利
洪·昆温
约翰·库津斯基
麦克·波伊尔
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Huayi Intelligent Medical Equipment Ningbo Co ltd
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    • A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
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    • 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
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    • A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone

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Abstract

本实用新型提供了一种经皮推动器，包含伸长固定体部与伸长滑动构件；所述伸长滑动构件滑动安装在伸长固定体部上；伸长固定体部沿长度延伸方向的两端分别形成第一弱侧连接端、滑动接入端；所述伸长滑动构件包含导向部与引导件，导向部与引导件一体成型或紧固连接，所述导向部与伸长固定体部滑动连接；引导件沿长度延伸方向的两端分别形成第二弱侧连接端、操作端；第一弱侧连接端和/或第二弱侧连接端上设置易折断结构。本实用新型还提供了一种包含上述经皮推动器的多轴椎弓根螺钉。多轴骨锚固件的锁定机构连接到每个伸长滑动构件的端部，使得锁定机构能被引导到合适的位置，以允许对多轴骨锚固件的多轴运动、杆运动或其他运动特征进行锁定或解锁。

Description

经皮推动器与多轴椎弓根螺钉
技术领域
本实用新型涉及医疗器械领域，具体地，涉及一种经皮推动器与多轴椎弓根螺钉。
背景技术
多轴椎弓根螺钉通常用于腰椎融合手术。这种螺钉被设计成可在和骨锚定之前或之后容纳其它的诸如稳定杆在内的器械或植入物。螺钉的定位和对准决定了可附加器械的位置和方向。在稳定脊柱的手术中，多个椎弓根螺钉被安置到椎骨上，并且一个或多个杆体在紧固件之间延伸，用以固定脊柱的某一部分。
由于椎弓根螺钉通常用于腰椎融合手术，因此螺钉植入的精确度至关重要。因此，机器人有时被用于辅助安置和固定这些螺钉。
典型的多轴椎弓根螺钉使用锁帽，该锁帽拧入多轴椎弓根螺钉的郁金香体部，以向杆体和柄部施加压缩力，同时锁定杆体和柄部的运动。其它更现代的设计则采用“夹头”或其它机构来独立地锁定多轴运动中的柄部和运动中的杆体。
但是现有技术中的锁帽与“夹头”属于“一步到位”式的结构，也就是说，在多轴椎弓根螺钉植入的过程中难以根据实际需要进行角度或长度上的调整。
实用新型内容
针对现有技术中的缺陷，本实用新型的目的是提供一种经皮推动器与多轴椎弓根螺钉。
根据本实用新型提供的经皮推动器，包含伸长固定体部与伸长滑动构件；所述伸长滑动构件滑动安装在伸长固定体部上；
伸长固定体部沿长度延伸方向的两端分别形成第一弱侧连接端、滑动接入端；
所述伸长滑动构件包含导向部与引导件，导向部与引导件一体成型或紧固连接，所述导向部与伸长固定体部滑动连接；
引导件沿长度延伸方向的两端分别形成第二弱侧连接端、操作端；
第一弱侧连接端和/或第二弱侧连接端上设置易折断结构。
优选地，设置有一个或多个引导件；多个引导件之间联动设置或单动设置。
优选地，所述滑动接入端上设置有压接结构，所述压接结构包含压接适应槽。
本实用新型还提供了一种多轴椎弓根螺钉，包含多轴骨锚固件与上述的经皮推动器，经皮推动器安装在多轴骨锚固件上。
优选地，所述多轴骨锚固件包含接收器构件与锁定机构；接收器构件包含锁定凹槽，锁定机构滑动安装在锁定凹槽中；
第一弱侧连接端、第二弱侧连接端分别连接到接收器构件、锁定机构上。
优选地，易折断结构与多轴骨锚固件之间形成折断槽结构。
优选地，所述接收器构件包含头部接收槽与杆体接收槽；多个锁定凹槽中包含有第一凹槽与第二凹槽，多个锁定机构中包含有第一锁定构件与第二锁定构件；
头部接收槽、杆体接收槽分别与第一凹槽、第二凹槽对应设置，第一锁定构件、第二锁定构件分别滑动安装在第一凹槽、第二凹槽中。
优选地，头部接收槽、杆体接收槽中分别开拆卸安装有固定柄部、固定杆；
第一锁定构件沿第一凹槽滑动能够与固定柄部接触或分离；第二锁定构件沿第二凹槽滑动能够引起杆体接收槽形状的变化。
优选地，所述固定柄部包含柄体部与结合头部；
柄体部上设置有螺纹结构，结合头部为球形或椭球形，结合头部安装在头部接收槽中。
与现有技术相比，本实用新型具有如下的有益效果：
1、经皮推动器包括连接到多轴骨锚固件的伸长固定体部，以及沿着伸长固定体部滑动的伸长滑动体部，具有导向精确的优势。
2、多轴骨锚固件的锁定机构连接到每个伸长滑动构件的端部，使得锁定机构能被引导到合适的位置，以允许对多轴骨锚固件的多轴运动、杆运动或其他运动特征进行锁定或解锁。
3、经皮推动器允许多轴运动并且让多轴椎弓根螺钉的固定杆通过经皮手术方法能独立地进行锁定或解锁。
附图说明
通过阅读参照以下附图对非限制性实施例所作的详细描述，本实用新型的其它特征、目的和优点将会变得更明显：
图1为经皮推动器拆开时的多轴椎弓根螺钉结构示意图；
图2为经皮推动器装配时的多轴椎弓根螺钉结构示意图；
图3为经皮推动器与多轴骨锚固件连接处局部详图；
图4为多轴骨锚固件剖面结构示意图。
图中示出：
具体实施方式
下面结合具体实施例对本实用新型进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本实用新型，但不以任何形式限制本实用新型。应当指出的是，对本领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干变形和改进。这些都属于本实用新型的保护范围。
在本实用新型的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。
如图1至图3所示，本实用新型提供的经皮推动器，包含伸长固定体部602与伸长滑动构件604；所述伸长滑动构件604滑动安装在伸长固定体部602上；伸长固定体部602沿长度延伸方向的两端分别形成第一弱侧连接端610、滑动接入端；所述伸长滑动构件604包含导向部608与引导件606，导向部608与引导件606一体成型或紧固连接，所述导向部608与伸长固定体部602滑动连接；引导件606沿长度延伸方向的两端分别形成第二弱侧连接端612、操作端；第一弱侧连接端610和/或第二弱侧连接端612上设置易折断结构。所述易折断结构，可以是横截面相对其他部位变小，使得该部分更容易被折断，也可以是该部分使用的材料相对其他部分刚度较低，使得在弯折操作时更容易被折断。
优选地，经皮推动器中设置有一个或多个引导件606；多个引导件606之间联动设置或单动设置。优选地，所述滑动接入端上设置有压接结构，所述压接结构包含压接适应槽614。压接适应槽614使得滑动接入端的近端能够更好地与导向部608中的开孔内壁面接触，形成对导向部608的轴向运动的精确导向，优选地，所述压接结构由具有一定弹性的材料制成。
本实用新型还提供了一种多轴椎弓根螺钉，包含多轴骨锚固件100与上述的经皮推动器600，经皮推动器600紧固安装或一体成型在多轴骨锚固件100上。所述多轴骨锚固件100包含接收器构件200与锁定机构；接收器构件200包含锁定凹槽，锁定机构滑动安装在锁定凹槽中；第一弱侧连接端610、第二弱侧连接端612分别连接到接收器构件200、锁定机构上。优选地，易折断结构与多轴骨锚固件100之间形成折断槽结构。在将多轴骨锚固件100植入完毕后，通过折断槽结构的断裂，实现多轴骨锚固件100与经皮推动器600的分离。
如图4所示，所述接收器构件200包含头部接收槽211与杆体接收槽221；多个锁定凹槽中包含有第一凹槽212与第二凹槽222，多个锁定机构中包含有第一锁定构件300与第二锁定构件400；头部接收槽211、杆体接收槽221分别与第一凹槽212、第二凹槽222对应设置，第一锁定构件300、第二锁定构件400分别滑动安装在第一凹槽212、第二凹槽222中。头部接收槽211、杆体接收槽221中分别开拆卸安装有固定柄部102、固定杆104；第一锁定构件300沿第一凹槽212滑动能够与固定柄部102接触或分离；第二锁定构件400沿第二凹槽222滑动能够引起杆体接收槽221形状的变化。优选地，所述固定柄部102包含柄体部111与结合头部112；柄体部111上设置有螺纹结构，结合头部112为球形或椭球形，结合头部112安装在头部接收槽211中。
以上对本实用新型的具体实施例进行了描述。需要理解的是，本实用新型并不局限于上述特定实施方式，本领域技术人员可以在权利要求的范围内做出各种变形或修改，这并不影响本实用新型的实质内容。在不冲突的情况下，本申请的实施例和实施例中的特征可以任意相互组合。

Claims (9)

1.一种经皮推动器，其特征在于，包含伸长固定体部(602)与伸长滑动构件(604)；所述伸长滑动构件(604)滑动安装在伸长固定体部(602)上；
伸长固定体部(602)沿长度延伸方向的两端分别形成第一弱侧连接端(610)、滑动接入端；
所述伸长滑动构件(604)包含导向部(608)与引导件(606)，导向部(608)与引导件(606)一体成型或紧固连接，所述导向部(608)与伸长固定体部(602)滑动连接；
引导件(606)沿长度延伸方向的两端分别形成第二弱侧连接端(612)、操作端；
第一弱侧连接端(610)和/或第二弱侧连接端(612)上设置易折断结构。
2.根据权利要求1所述的经皮推动器，其特征在于，设置有一个或多个引导件(606)；多个引导件(606)之间联动设置或单动设置。
3.根据权利要求1所述的经皮推动器，其特征在于，所述滑动接入端上设置有压接结构，所述压接结构包含压接适应槽(614)。
4.一种多轴椎弓根螺钉，其特征在于，包含多轴骨锚固件(100)与权利要求1至3中任一项所述的经皮推动器(600)，经皮推动器(600)安装在多轴骨锚固件(100)上。
5.根据权利要求4所述的多轴椎弓根螺钉，其特征在于，所述多轴骨锚固件(100)包含接收器构件(200)与锁定机构；接收器构件(200)包含锁定凹槽，锁定机构滑动安装在锁定凹槽中；
第一弱侧连接端(610)、第二弱侧连接端(612)分别连接到接收器构件(200)、锁定机构上。
6.根据权利要求5所述的多轴椎弓根螺钉，其特征在于，易折断结构与多轴骨锚固件(100)之间形成折断槽结构。
7.根据权利要求5所述的多轴椎弓根螺钉，其特征在于，所述接收器构件(200)包含头部接收槽(211)与杆体接收槽(221)；多个锁定凹槽中包含有第一凹槽(212)与第二凹槽(222)，多个锁定机构中包含有第一锁定构件(300)与第二锁定构件(400)；
头部接收槽(211)、杆体接收槽(221)分别与第一凹槽(212)、第二凹槽(222)对应设置，第一锁定构件(300)、第二锁定构件(400)分别滑动安装在第一凹槽(212)、第二凹槽(222)中。
8.根据权利要求7所述的多轴椎弓根螺钉，其特征在于，头部接收槽(211)、杆体接收槽(221)中分别开拆卸安装有固定柄部(102)、固定杆(104)；
第一锁定构件(300)沿第一凹槽(212)滑动能够与固定柄部(102)接触或分离；第二锁定构件(400)沿第二凹槽(222)滑动能够引起杆体接收槽(221)形状的变化。
9.根据权利要求8所述的多轴椎弓根螺钉，其特征在于，所述固定柄部(102)包含柄体部(111)与结合头部(112)；
柄体部(111)上设置有螺纹结构，结合头部(112)为球形或椭球形，结合头部(112)安装在头部接收槽(211)中。
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