The utility model provides an anti-displacement fixator for tibial prosthesis in unicondylar replacement, which belongs to the technical field of surgical auxiliary equipment. The utility model comprises a fixing part, a connecting part and a holding part; the fixing part is connected with the holding part through a connecting part; the fixing part includes an upper fixing part and a lower fixing part; the upper fixing part is a thin flat square metal rod, and the inner surface of the front surface of the metal rod is provided with a cushion; the lower fixing part is a circular needle that can be inserted into the reserved bone marrow canal; the connecting part includes two cross and rotating connections. The back end of one connecting rod is fixedly connected with the front end of a long handle, the front end of which is fixedly connected with the back end of a metal rod, and the back end of the other connecting rod is fixedly connected with the front end of another long handle, and the front end of which is fixedly connected with the back end of a round needle. The utility model can make the tibial prosthesis fixed firmly, and has simple operation, uses the original bone marrow canal, and does not need to drill holes in the bone; at the same time, the soft cushion design of the prosthesis contact surface can protect the prosthesis and prevent iatrogenic wear and tear.
【技术实现步骤摘要】
单髁置换术胫骨假体防移位固定器
本技术属于外科手术辅助设备
,尤其涉及一种单髁置换术胫骨假体防移位固定器。
技术介绍
目前膝关节单髁置换术(unicondylarkneearthroplasty,UKA),在临床上取得了广泛的应用,获得了良好的手术效果,优点为创伤小,切口小,创伤轻。优秀的手术效果需要精确的假体放置为保证,临床中在将股骨侧和胫骨侧假体通过骨水泥安装在骨质上时,在骨水泥还没硬化时需要用半月板试模放入,以挤出多余的骨水泥,创造合适的空间,在取出半月板试模时,由于此时骨水泥还没完全凝固,固定不稳,常导致胫骨假体移位或倾斜,需重新安置,影响手术效果。目前临床并无合适工具解决上述问题,只能等骨水泥完全硬化后,再取出,这样浪费时间,还导致残余骨水泥清除困难;或是寄希望于术者小心操作。本技术填补这一空白。
技术实现思路
本技术的目的在于,克服现有技术的不足,提供一种单髁置换术胫骨假体防移位固定器,在骨水泥完全凝固前以及假体和骨面形成牢靠粘合前为假体提供确切稳定的固定,确保假体不会移位或倾斜。为了实现上述目标,本技术提供了如下技术方案:一种单髁置换术胫骨假体防移 ...
【技术保护点】
1.一种单髁置换术胫骨假体防移位固定器,其特征在于:包括固定部(1)、连接部(2)和握持部(3);所述固定部(1)与所述握持部(3)之间通过所述连接部(2)连接;所述握持部(3)为两个长柄(31),且所述两个长柄(31)的后端之间通过阻力弹簧(32)连接;所述固定部(1)包括上固定部和下固定部;所述上固定部是薄扁方形的金属杆(11),所述金属杆(11)前部的表面内侧设置有软垫(111);所述下固定部是能够插入预留的骨髓道中的圆针(12);所述连接部(2)包括两根交叉且转动连接的连接杆(21);其中一根连接杆(21)的后端与握持部(3)的一根长柄(31)的前端固定连接,其前端 ...
【技术特征摘要】
1.一种单髁置换术胫骨假体防移位固定器,其特征在于:包括固定部(1)、连接部(2)和握持部(3);所述固定部(1)与所述握持部(3)之间通过所述连接部(2)连接;所述握持部(3)为两个长柄(31),且所述两个长柄(31)的后端之间通过阻力弹簧(32)连接;所述固定部(1)包括上固定部和下固定部;所述上固定部是薄扁方形的金属杆(11),所述金属杆(11)前部的表...
【专利技术属性】
技术研发人员:涂意辉,马童,薛华明,文涛,杨涛,张颍川,王方兴,
申请(专利权)人:上海市杨浦区中心医院同济大学附属杨浦医院,
类型:新型
国别省市:上海,31
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