CN2390562Y - 椎弓根钉－椎板钩固定装置 - Google Patents

椎弓根钉－椎板钩固定装置 Download PDF

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CN2390562Y
CN2390562Y CN 98213544 CN98213544U CN2390562Y CN 2390562 Y CN2390562 Y CN 2390562Y CN 98213544 CN98213544 CN 98213544 CN 98213544 U CN98213544 U CN 98213544U CN 2390562 Y CN2390562 Y CN 2390562Y
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vertebral
vertebral lamina
lamina hook
connecting rod
pedicle nail
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高志增
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Abstract

椎弓根钉－椎板钩固定装置,是用于腰椎椎弓峡部裂部的内固定医疗器械。主要由椎弓根钉、椎板钩、连接杆及螺帽组成。椎弓根钉经椎弓根植入椎体,椎板钩钩于同侧椎板下缘,两者由连接杆连接,并用螺帽拧紧成一紧固系统。旋转螺帽,可起加压作用,促使骨折愈合,有利于早期下地活动。

Description

椎弓根钉—椎板钩固定装置
1、本实用新型是一种用于腰椎椎弓峡部裂的内固定医疗器械。
2、腰椎椎弓峡部裂是一种较为常见的疾患，可致腰椎不稳，并产生疼痛等症状。目前，常用治疗技术有Duck固定法、“张力带”固定法、经峡部内固定、峡部裂处植骨法等(见《中国脊柱脊髓杂志》1997年第2期60页)。但有手术操作复杂、易损伤神经根、不利于早期下地活动及骨折不愈合率高等缺点。
3、本实用新型设计的目的就是要解决上述缺点，使腰椎椎弓部裂既能坚强固定，患者又能早期下地活动，提高骨折的愈合率。
4、椎弓根钉一椎板钩固定系统由一椎弓根钉1、一椎板钩2、一连接杆3、及两个稍大螺帽6、一个稍小螺帽7组成。椎弓根钉尾端呈扁方形，中央有一孔，连接杆粗螺纹段4可穿入。椎板钩体部中央亦有一小孔，连接杆细螺纹端5可穿入，一侧面以孔为中心有放射状细小凸起。连接杆3一端呈方形，其一侧面中央有一垂直细螺纹杆5，以细螺纹杆为中心，侧面上有放射状细小凸起，与椎板钩一侧面的凸起相对合，连接杆的另一段为粗螺纹杆4。
5、具体实施办法是：椎弓根钉经椎弓根植入椎体，椎板钩钩于同侧椎板下缘，连接杆4穿过椎弓根钉1的尾孔，孔两侧各有一螺帽6，连接杆5从椎板钩的有凸起侧面穿过小孔，螺帽7在另一侧套在细螺纹杆5上。螺帽6一起向细螺纹杆端旋转，可使椎弓峡部裂处有加压作用。拧紧螺帽7，螺帽6相向拧紧，整个系统即成为一牢固的整体。

Claims (3)

1.一种椎弓根钉——椎板钩固定装置，椎弓根钉、连接杆、椎板钩顺序连接，其特征是：连接杆粗螺纹端穿入椎弓根钉尾孔，细螺纹端穿入椎板钩小孔，分别用螺帽紧固。
2.根据权利要求1所述的椎弓根钉——椎板钩固定装置，其特征是：椎弓根钉尾端呈扁方形，中央有一孔；椎板钩体部中央有一小孔，一侧侧面以孔为心中有放射状细小凸起；连接杆一端呈方形，一侧侧面中央有一垂直短、细螺纹杆，以细螺纹杆基部为中心，其一侧侧面有放射状细小凸起，与椎板钩侧面细小凸起相咬合，连接杆另一段有稍粗螺纹；紧固装置有两个大螺帽和一个小螺帽。
3.根据权利要求1所述的椎弓根钉——椎板钩固定装置，其特征是：通过两个大螺帽的同向移动，产生加压作用；连接杆与椎板钩可于任何角度下紧固。
CN 98213544 1998-03-24 1998-03-24 椎弓根钉－椎板钩固定装置 Expired - Fee Related CN2390562Y (zh)

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CN 98213544 CN2390562Y (zh) 1998-03-24 1998-03-24 椎弓根钉－椎板钩固定装置

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CN 98213544 CN2390562Y (zh) 1998-03-24 1998-03-24 椎弓根钉－椎板钩固定装置

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100420425C (zh) * 2002-12-24 2008-09-24 叶中权 脊椎固定复位器
CN114404010A (zh) * 2021-12-23 2022-04-29 山东师范大学 一种用于腰椎峡部裂的可调节椎板钩内固定装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100420425C (zh) * 2002-12-24 2008-09-24 叶中权 脊椎固定复位器
CN114404010A (zh) * 2021-12-23 2022-04-29 山东师范大学 一种用于腰椎峡部裂的可调节椎板钩内固定装置

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