CN105213009A - 微创双螺塞螺钉 - Google Patents
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Abstract
本发明涉及医疗器械技术领域,具体涉及一种微创双螺塞螺钉。本发明微创双螺塞螺钉,与连接棒连接,所述微创双螺塞螺钉包括内螺塞、外螺塞、加长臂连接器、压块及空心球头钉,所述加长臂连接器的内部中空,所述连接棒横向贯穿所述加长臂连接器,所述外螺塞活动设置在所述加长臂连接器的内部,所述内螺塞活动设置在所述外螺塞的内部,并能使所述连接棒固定在所述加长臂连接器上;所述压块设置在所述加长臂连接器的内壁上,用于将所述空心球头钉固定在所述加长臂连接器的端部。本发明微创双螺塞螺钉通过设置压块、内螺塞和外螺塞,使连接棒固定在所述加长臂连接器上,可防止在进行椎体撑开加压时出现椎体旋转和高度丢失的现象。
Description
技术领域
本发明涉及医疗器械技术领域,具体涉及一种微创双螺塞螺钉。
背景技术
手术的微创化、功能化和智能化是现代外科技术的标志,也是未来外科技术的发展方向,脊柱微创外科技术是将传统脊柱手术与微创技术相结合,以期达到减少手术对患者的创伤、减轻患者术后的伤痛不适,缩短卧床和住院时间,加速患者术后功能的康复,并努力保持脊柱正常解剖结构的完整性,从而达到术后保留脊柱正常生理功能的最高目标,然而,脊柱微创手术不仅需要先进的仪器设备的辅助与支撑,而且还要求术者具有很高的触觉敏感度,空间辨别能力、以及能够通过狭窄的工作管道熟练操作的能力,特别是脊柱前方比邻重要的神经、血管和脏器,这就给脊柱前路微创手术的开展带来极大的技术困难与挑战。
经皮椎弓根螺钉固定技术和经皮通道操作技术的微创手术,这类手术最大程度的避免了椎旁肌的剥离,减小手术创伤,且应用范围广泛,可以治疗巨大的腰椎间盘突出或脱出,腰椎管狭窄,脊柱侧弯畸形等等,经皮通道技术手术视野比椎间盘镜开阔,可以应用常规手术器械,医生容易操作掌握,经皮椎弓根螺钉固定系统是在术中透视的引导下操作完成,但是普通的螺塞螺钉在椎体撑开加压时椎体可能会出现旋转和高度丢失。
发明内容
本发明的目的在于提供一种微创双螺塞螺钉,可防止在椎体撑开加压时椎体旋转。
为了实现上述目的,本发明提供一种微创双螺塞螺钉,与连接棒连接,所述微创双螺塞螺钉包括内螺塞、外螺塞、加长臂连接器、压块及空心球头钉,所述加长臂连接器的内部中空,所述连接棒横向贯穿所述加长臂连接器,所述外螺塞活动设置在所述加长臂连接器的内部,所述内螺塞活动设置在所述外螺塞的内部,并能使所述连接棒固定在所述加长臂连接器上;所述压块设置在所述加长臂连接器的内壁上,用于将所述空心球头钉固定在所述加长臂连接器的端部。
优选地,所述内螺塞的下部具有凸起部,用于卡和所述连接棒。
优选地,所述内螺塞的上部设置有安装槽,用于承受外力使所述内螺塞在所述外螺塞内部转动。
优选地,所述安装槽为六角花槽。
优选地,所述外螺塞上开设有至少一个开口。
优选地,所述加长臂连接器的外壁上对称设置有至少一对第一定位槽,所述压块上设置有第二定位槽,所述第二定位槽与第一定位槽同轴设置,用于在受到外力贯穿所述第一定位槽和第二定位槽时,使所述空心球头钉固定在所述加长臂连接器的端部。
优选地,所述加长臂连接器的外壁或内壁上开设有凹槽,用于在手术时,能够折断所述加长臂连接器。
优选地,所述加长臂连接器的外壁和内壁上同轴开设有凹槽,用于在手术时,能够折断所述加长臂连接器。
优选地,所述凹槽设置在所述加长臂连接器的内螺纹的中上部。
优选地,所述空心球头钉的内部为通孔。
本发明微创双螺塞螺钉通过设置压块将空心球头钉连接在所述加长臂连接器的端部,使空心球头钉在活动范围内被锁死;通过设置内螺塞和外螺塞,使连接棒固定在所述加长臂连接器上,从而使得在进行椎体撑开加压时,可防止出现椎体旋转和高度丢失的现象,确保手术操作的可靠性。
附图说明
图1是本发明微创双螺塞螺钉的结构示意图;
图2是本发明内螺塞的主视图;
图3是本发明内螺塞的俯视图;
图4是本发明外螺塞的主视图;
图5是本发明外螺塞的俯视图;
图6是本发明加长臂连接器的结构示意图;
图7是本发明压块的主视图;
图8是本发明压块的俯视图;
图9是本发明空心球头钉的结构示意图。
附图标记说明
内螺塞1外螺塞2
加长臂连接器3压块4
空心球头钉5安装槽6
凸起部7开口8
内螺纹9U型槽10
V型槽11第一定位槽12
第一球形面13第二定位槽14
第二球形面15通孔16
连接棒17。
具体实施方式
为了进一步说明本发明,下面结合实施例对本发明提供的微创双螺塞螺钉进行详细地描述,但不能将它们理解为对本发明保护范围的限定。
如图1所示,本发明微创双螺塞螺钉与连接棒17连接。其中,本发明微创双螺塞螺钉包括内螺塞1、外螺塞2、加长臂连接器3、压块4及空心球头钉5,所述加长臂连接器3的内部中空,所述连接棒17横向贯穿所述加长臂连接器3,所述外螺塞2活动设置在所述加长臂连接器3的内部,所述内螺塞1活动设置在所述外螺塞2的内部,并能使所述连接棒17固定在所述加长臂连接器3上;所述压块4设置在所述加长臂连接器3的内壁上,用于将所述空心球头钉5固定在所述加长臂连接器3的端部。
本发明微创双螺塞螺钉通过设置压块将空心球头钉连接在所述加长臂连接器的端部,使空心球头钉在活动范围内被锁死;通过设置内螺塞和外螺塞,使连接棒固定在所述加长臂连接器上,使得在进行椎体撑开加压时,可防止出现椎体旋转和高度丢失的现象,确保手术操作的可靠性。
如图2所示,所述内螺塞1的下部具有凸起部7,用于卡和所述连接棒17。通过在外螺塞2的内部旋转所述内螺塞1,拧紧内螺塞1可达到最终锁死连接棒17的效果,此外,也可根据需要调整卡和的程度。其中,通过设置所述凸起部,可增大空心球头钉和连接棒的相对运动抗力,使得绕棒旋转抗力更高,能够适应棒弯曲的力学情况,形成稳定的三角形力学结构。
所述加长臂连接器3的内部设有内螺纹9,通过所述内螺纹9,所述外螺塞2与加长臂连接器3活动连接。所述内螺塞1的外壁设有外螺纹,所述外螺塞2上设有与内螺塞1匹配的螺纹孔,为了便于在所述外螺塞2的内部安装所述内螺塞1,所述内螺塞1的上部设置有安装槽6(如图2和图3所示),用于承受外力使所述内螺塞1在所述外螺塞2内部转动。在本实施例中,所述安装槽6为六角花槽,但并不以此为限,还可设置为内六角槽或“十”字槽等。
如图,所述外螺塞2上开设有至少一个开口(如图4和图5所示),用于承受外力使外螺塞2在加长臂连接器3内转动。在本实施例中,共设置有三个开口,可在内螺塞1在外螺塞2内部旋转时,所述外螺塞2受力均匀。
如图6和图7所示,所述加长臂连接器3的外壁上对称设置有至少一对第一定位槽12,所述压块4上设置有第二定位槽14,所述第二定位槽14与第一定位槽12同轴设置,用于在受到外力贯穿所述第一定位槽和12第二定位槽14时,使所述空心球头钉5固定在所述加长臂连接器3的端部。
其中,空心球头钉5的头部为球形,头部内设有六方槽,空心球头钉5的钉体内部为通孔,外壁上设有螺纹,通过压块4可使空心球头钉5在活动范围被锁死。
为了在手术时,能够折断所述加长臂连接器3的多余部分,所述加长臂连接器3的外壁和/或内壁上开设有凹槽,所述凹槽设置在所述内螺纹9的中上部。当所述加长臂连接器3的外壁和内壁上开均设有凹槽时,外壁上的凹槽和内壁上的凹槽同轴设置。如图6所示,外壁上的凹槽为V型槽11,内壁上的凹槽为U型槽10。
所述加长臂连接器3与空心球头钉连接的一端的端部为第一球形面13(如图6所示),所述压块4的端部为第二球形面15(如图7所示),所述第一球形面13和第二球形面15匹配设置。
在进行微创双螺塞螺钉锁紧两步锁紧时:内螺塞的凸起部不能直接露出外螺塞底部。如果露出超过1mm那就一步就能同时锁死钉体和连接棒,不能有效的实现椎体撑开加压。
在手术操作时,首先拧紧外螺塞2,此时内螺塞1处于松动状态,在压块4上施加外力,使空心球头钉5的钉体能在活动范围内被锁死;此时,连接棒17还能沿轴向活动,拧紧内螺塞1,使凸起部7卡和在所述连接棒17上,将连接棒17锁死所述加长臂连接器3上,从而可避免在椎体撑开加压时椎体出现旋转和高度丢失的现象。
本发明微创双螺塞螺钉结构简单,可有效避免椎体撑开加压时椎体出现旋转和高度丢失的现象,以减轻术者操作难度及操作时间,提高手术的效率。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (10)
1.一种微创双螺塞螺钉,与连接棒连接,其特征在于,所述微创双螺塞螺钉包括内螺塞、外螺塞、加长臂连接器、压块及空心球头钉,所述加长臂连接器的内部中空,所述连接棒横向贯穿所述加长臂连接器,所述外螺塞活动设置在所述加长臂连接器的内部,所述内螺塞活动设置在所述外螺塞的内部,并能使所述连接棒固定在所述加长臂连接器上;所述压块设置在所述加长臂连接器的内壁上,用于将所述空心球头钉固定在所述加长臂连接器的端部。
2.根据权利要求1所述的微创双螺塞螺钉,其特征在于,所述内螺塞的下部具有凸起部,用于卡和所述连接棒。
3.根据权利要求1所述的微创双螺塞螺钉,其特征在于,所述内螺塞的上部设置有安装槽,用于承受外力使所述内螺塞在所述外螺塞内部转动。
4.根据权利要求3所述的微创双螺塞螺钉,其特征在于,所述安装槽为六角花槽。
5.根据权利要求1所述的微创双螺塞螺钉,其特征在于,所述外螺塞上开设有至少一个开口。
6.根据权利要求1所述的微创双螺塞螺钉,其特征在于,所述加长臂连接器的外壁上对称设置有至少一对第一定位槽,所述压块上设置有第二定位槽,所述第二定位槽与第一定位槽同轴设置,用于在受到外力贯穿所述第一定位槽和第二定位槽时,使所述空心球头钉固定在所述加长臂连接器的端部。
7.根据权利要求1所述的微创双螺塞螺钉,其特征在于,所述加长臂连接器的外壁或内壁上开设有凹槽,用于在手术时,能够折断所述加长臂连接器。
8.根据权利要求1所述的微创双螺塞螺钉,其特征在于,所述加长臂连接器的外壁和内壁上同轴开设有凹槽,用于在手术时,能够折断所述加长臂连接器。
9.根据权利要求7或8所述的微创双螺塞螺钉,其特征在于,所述凹槽设置在所述加长臂连接器的内螺纹的中上部。
10.根据权利要求1所述的微创双螺塞螺钉,其特征在于,所述空心球头钉的内部为通孔。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727012.9A CN105213009A (zh) | 2015-10-30 | 2015-10-30 | 微创双螺塞螺钉 |
| US15/509,559 US10022156B2 (en) | 2015-10-30 | 2016-09-03 | Minimally invasive screw with double threaded plugs |
| PCT/CN2016/097978 WO2017071403A1 (zh) | 2015-10-30 | 2016-09-03 | 微创双螺塞螺钉 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727012.9A CN105213009A (zh) | 2015-10-30 | 2015-10-30 | 微创双螺塞螺钉 |
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| CN105213009A true CN105213009A (zh) | 2016-01-06 |
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| CN201510727012.9A Pending CN105213009A (zh) | 2015-10-30 | 2015-10-30 | 微创双螺塞螺钉 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US10022156B2 (zh) |
| CN (1) | CN105213009A (zh) |
| WO (1) | WO2017071403A1 (zh) |
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| CN107260282A (zh) * | 2017-07-12 | 2017-10-20 | 北京市富乐科技开发有限公司 | 一种双u螺钉 |
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| WO2012128825A1 (en) * | 2011-03-24 | 2012-09-27 | Jackson Roger P | Polyaxial bone anchor with compound articulation and pop-on shank |
| CN108013929A (zh) * | 2018-01-03 | 2018-05-11 | 江苏荷普医疗科技股份有限公司 | 防止螺纹套回转的椎体钉上钉器 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20170290607A1 (en) | 2017-10-12 |
| US10022156B2 (en) | 2018-07-17 |
| WO2017071403A1 (zh) | 2017-05-04 |
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