The invention relates to a highly adjustable intervertebral fixation fusion device used in spinal intervertebral fusion surgery, and belongs to the field of medical appliances. An active bracket consisting of a quadrilateral is symmetrical on the active bracket, and a support platform and a contact interface are distributed symmetrically in the upper and lower directions. The movable support, the support platform and the contact interface have hollow bone grooves in the middle of the movable support, and the moving bracket is horizontally with a screw through a circular hole on a fixed block and a tune. The joint nut is matched with a lower and lower groove on both sides of the fixed block, and the supporting platform is connected by a hook structure to the fixed block, and the hook structure can slide in the slot of the fixed block, and the support platform and the contact interface are fixedly connected through a limit structure. The invention can separately support the platform, thereby realizing the change of the height of the intervertebral fusion device. The invention simplifies the operation steps and shortens the operation time when the bone graft is fully fused. One
【技术实现步骤摘要】
高度可调节的椎间固定融合器
本专利技术涉及一种在脊柱椎间融合手术中使用的高度可调节的椎间固定融合器,属于医疗器械领域。
技术介绍
在脊柱外科手术中,相对于经前路椎体间融合(Anteriorlumbarinterbodyfusion)技术(ALIF)和经后路椎体间融合(Posteriorlumbarinterbodyfusion)技术(PLIF),经椎间孔椎体间融合(Transforaminallumbarinterbodyfusion)技术(TLIF)是一种较新的脊柱融合技术。TLIF技术具有创伤小、融合率高和符合脊柱生物力学的特点,在脊柱融合领域逐渐占主导地位[ChristopherP,Ames,FrankL,etal.Biomechanicalcomparisionofposteriorlumbarinterbodyfusionandtransforaminallumbarinterbodyfusionperformedat1and2levels[J].Spine,2005,19:562-566.][AnnetteKettler,WernerSchmoelz,ErichKast.Invitrostabilizingeffectofatransforaminalcomparedwithtwoposteriorlumbarinterbodyfusioncages[J].Spine,2005,22:665-670]。它是通过后路实行彻底的单侧关节突关节切除术,而不去显露神经根以及硬膜等椎管内结构。由此可降低包括神经并发症在内的多种并发症的风险。TLIF可以提 ...
【技术保护点】
1.一种高度可调节的椎间固定融合器,其特征在于,包括四边形的活动支架(1),所述
【技术特征摘要】
1.一种高度可调节的椎间固定融合器,其特征在于,包括四边形的活动支架(1),所述活动支架上下面对称,并且上下方向上对称地分布有支撑平台(2)和接触界面(3),所述的活动支架、支撑平台和接触界面中间都有中空的植骨槽(6),所述的活动支架水平方向有螺杆(11)穿过固定块(4)上的圆孔(41)与调节螺母(5)配合,所述的固定块(4)两侧有上下方向的滑槽(42);支撑平台(2)通过钩形结构(21)连接固定块(4),所述钩形结构(21)可在固定块的滑槽(42)内滑动;所述活动支架上下两面上,靠近固定块端有两个较矮的弧形凸起(12),远离固定块端有两个相对较高的楔形凸起(13);所述支撑平台上,靠近固定块端有两个弧形槽(22)与弧形凸起(12)配合,远离固定块端有两个楔形槽(23),用于插入楔形凸起(13);所述支撑平台和接触界面通过限位结构固定连接。2.根据权利要求1所述的椎间固定融合器,其特征在于,所述的接触界面(3)表面分布有锯齿状结构(31)。3.根...
【专利技术属性】
技术研发人员:张衣北,
申请(专利权)人:武汉光谷北宸医疗器械有限公司,
类型:发明
国别省市:湖北,42
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