The utility model discloses a cement-type intervertebral fusion device, which belongs to the field of intervertebral fusion devices for spinal surgery, including a cement-type fusion device, a injection rod and a mounting screw. The injection rod is provided with an injection through hole, one end of which is open, the other end of which is provided with a positioning bump, and the positioning bump is provided with an inner hole coaxial to the injection through hole; one end of the installation screw is provided with an end cap and the other end is threaded. Head, the installation screw passes through the injection hole of the injection rod, and the screw head is connected with the screw of the bone cement fusion device; the bone cement fusion device is provided with a cavity, and a plurality of raised spikes are arranged on the working face, a long through hole is opened on the spike, a short through hole is opened on the working face, and a screw hole is arranged on the bone cement fusion device, and a positioning concave hole is also arranged. This design can perfuse bone cement into adjacent segments through long and short through holes, and instantly fuse the interbody fusion device and adjacent segments into a whole to achieve stability.
【技术实现步骤摘要】
骨水泥型椎间融合装置
本技术涉及一种用于脊柱手术的椎间融合器,尤其是一种骨水泥型椎间融合装置。
技术介绍
常规椎间融合器主要用于脊柱手术如:脊柱的不稳定手术需要固定融合,颈椎、腰椎间盘突出椎间盘摘除后椎间隙植骨融合手术。常规的cage将自体骨或者自体骨和同种异体骨混合置入期中的空隙后嵌紧,再植入椎间隙,让植入骨和邻近的椎体骨融合后获得脊柱的稳定,其中间必须植入的是骨头。必须等到骨愈合后才能获得初步稳定需要的时间大概需要3-6个月,骨愈合塑性良好一般需要两年。患者需要卧床制动的时间很长。常规的椎间融合器有聚醚醚酮(Polyetheretherketone,PEEK)材质的和钛合金的,还有多孔钽椎间融合器。但都需要植入自体骨和同种异体骨,植入椎间隙后需要骨长入,如果植入骨量不够,固定不牢固,感染等因素造成植入骨不愈合,不长入,椎间融合器就会出现松动,进一步造成内固定长期承受较大的应力而疲劳断裂,进而造成手术的失败。需要从新翻修手术,给患者造成巨大痛苦。而且对于年龄较大骨质疏松的老年患者植入椎间融合器,因为骨质疏松无法嵌紧,而采用直接植骨的手术方式需要卧床的时间需要3-6个月的时间。
技术实现思路
本技术的目的是提供一种置入后可以即刻和永久获得腰椎的稳定支撑的骨水泥型椎间融合装置,结构简单,安装方便。本技术提出包括骨水泥型融合器、注射杆、安装螺杆,注射杆内设有注射通孔,其一端敞口,另一端设有定位凸块,定位凸块上开有与注射通孔同轴线且连通的内孔;安装螺杆一端设有端盖,另一端为螺纹头,安装螺杆穿过注射杆的注射通孔,其螺纹头与骨水泥型融合器螺纹连接;所述骨水泥型融合器内设 ...
【技术保护点】
1.一种骨水泥型椎间融合装置,其特征在于,包括骨水泥型融合器、注射杆、安装螺杆,注射杆内设有注射通孔,其一端敞口,另一端设有定位凸块,定位凸块上开有与注射通孔同轴线且连通的内孔;安装螺杆一端设有端盖,另一端为螺纹头,安装螺杆穿过注射杆的注射通孔,其螺纹头与骨水泥型融合器螺纹连接;所述骨水泥型融合器内设空腔,其工作面上设有多个凸起的棘钉,棘钉上开有长通孔、工作面上开有短通孔,长通孔、短通孔均与空腔相通,骨水泥型融合器上设有与安装螺杆的螺纹头相配合的螺纹孔,还设有与定位凸块相配合的定位凹孔。
【技术特征摘要】
1.一种骨水泥型椎间融合装置,其特征在于,包括骨水泥型融合器、注射杆、安装螺杆,注射杆内设有注射通孔,其一端敞口,另一端设有定位凸块,定位凸块上开有与注射通孔同轴线且连通的内孔;安装螺杆一端设有端盖,另一端为螺纹头,安装螺杆穿过注射杆的注射通孔,其螺纹头与骨水泥型融合器螺纹连接;所述骨水泥型融合器内设空腔,其工作面上设有多个凸起的棘钉,棘钉上开有长通孔、工作面上开有短通孔,长通孔、短通孔均与空腔相通,骨水泥型融合器上设有与安装螺杆的螺纹头相配合的螺纹孔,还设有与定位凸块相配合的定位凹孔。2.根据权利要求1所述的骨水泥型椎间融合装置,其特征在于,所述骨水泥型融合器设有上、下两工作面,所述注射杆上固连着手柄。3.根据权利要求1所述的骨水泥型椎间融合装置,其特征在于,定位凸块包括块体、块体上延伸的两凸杆,两凸杆位于内孔两侧,所述骨水泥型融合器上的定位凹孔是与两凸杆形状相适应的两个分凹孔。4.根据权利要求1所述的骨水泥型椎间融合装置,其特征在于,定...
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