The utility model discloses a distal locking auxiliary aiming device for femoral intramedullary nails, which comprises a screw rod, a screw part arranged on the top of the screw rod, a backing part arranged on the bottom of the screw rod, a detachable connection between the screw part and/or the backing part and the screw rod, a threading block arranged on the screw rod, and a screw rod matched with the screw rod. The side wall of the propulsion block is provided with a handle. The utility model directly uses the existing fixing device of femoral intramedullary nails to pass the threaded rod through the casing hole, and screw the threaded rod into the threaded rod on the inner side of the casing hole, and the distal end of the threaded rod is propped against the skin of the patient through the butt part, and the rod of the threaded rod is fixed with the propulsive block, and then the femur is driven by rotating the threaded rod During the course of moving, the rod was observed by X-ray fluoroscopy. When it was in position, that is, when the rod rested against the femoral intramedullary nail, the movement was terminated and the aiming work was completed.
【技术实现步骤摘要】
股骨髓内钉远端锁钉辅助瞄准装置
本技术涉及骨科手术治疗器械,尤其涉及一种股骨髓内钉远端锁钉辅助瞄准装置。
技术介绍
授权公告号为“CN2917570”的技术专利说明书中公开了“股骨髓内钉及其快速瞄准器”,如图1所示,其包括把手1、瞄准导杆2、远端定位支架3、锁紧螺杆4、导向杆5、股骨髓内钉6、股骨定深杆7、远端锁钉套管8,导向杆5与把手1固定连接,股骨髓内钉6与锁紧螺杆4螺纹连接,股骨定深杆7可滑动且位置可锁定的插接在远端定位支架3上,且股骨定深杆7的前端抵住股骨髓内钉6,远端定位支架3通过安装块9与瞄准导杆2连接,安装块9上设置有用于安装上述远端锁钉套管8的套管孔9a,其使用方法为:选择合适的股骨髓内钉6后,通过锁紧螺杆4及把杆1将三者固定为一体,根据髓内钉的使用部位不同将瞄准导杆2摆向左侧或者右侧,根据之前计算好的尺寸,将股骨定深杆7向靠近股骨髓内钉6移动,并且抵靠在股骨髓内钉6上,如图1所示,当股骨的形状比较直的时候,股骨髓内钉6不会发生形变,骨定深杆7的内端应正好抵靠在股骨髓内钉6上,此时套管孔9a的位置与股骨髓内钉6的位置对应,至此,便完成了瞄准工作,后续通过在套管孔9a中装入远端锁钉套管8,钻孔并将锁钉打入股骨髓内钉6上,上述的内容为现有技术。但是由于人与人之间的股骨形状不一,如果说病人的股骨形状不规整,在安装股骨髓内钉6的时候,股骨髓内钉6会由于股骨的形状而强制的发生形变(通常髓内钉远端向外侧偏移),如图2所示,如此一来,股骨定深杆7向靠近股骨髓内钉6移动的时候,不会抵靠在股骨髓内钉6上,便无法正常的瞄准工作,为了应对这种情况,在临床中医生通 ...
【技术保护点】
1.股骨髓内钉远端锁钉辅助瞄准装置,其特征在于:包括螺纹杆,螺纹杆的顶部设置有旋拧部,螺纹杆的底部设置有抵靠部,所述旋拧部和/或抵靠部与螺纹杆可拆卸的连接,螺纹杆上安装有推进块,推进块内配合所述螺纹杆设置有螺纹,推进块的侧壁上安装有把杆。
【技术特征摘要】
1.股骨髓内钉远端锁钉辅助瞄准装置,其特征在于:包括螺纹杆,螺纹杆的顶部设置有旋拧部,螺纹杆的底部设置有抵靠部,所述旋拧部和/或抵靠部与螺纹杆可拆卸的连接,螺纹杆上安装有推进块,推进块内配合所述螺纹杆设置有螺纹,推进块的侧壁上安装有把杆。2.根据权利要求1所述的股骨髓内钉远端锁钉辅助瞄准装置,其特征在于:所述螺...
【专利技术属性】
技术研发人员:李运美,
申请(专利权)人:河北省沧州中西医结合医院,
类型:新型
国别省市:河北,13
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