Radial nerve root retractor of the utility model discloses, by vertical rod and the handle is fixedly connected with the hook, hook rod end is hook; the cross section of the handle is a rectangular solid body; the retractor Rod front is beginning to end gradually narrow, trapezoidal side thickness gradually increased from the head to the tail end of the hook; part of the hook head is arc-shaped, end hook part inclined inwards. The arc shape of the hook head is 1/3 with the same circular arc diameter. The length ratio of the trapezoid bottom and the top of the front face of the retractor rod is (2~3): 1; the thickness ratio of the side bottom and the top is 1 to 2~3. The utility model has the advantages of unique design, artful structure, simple structure and convenient application, and can conveniently and safely pull and protect the nerve root. The utility model can be used for the lumbar intervertebral fusion operation under the open or posterior open operation of the intervertebral disc, and the operation is safe and reliable, saving time and labor. It is suitable for the application of posterior lumbar interbody fusion, discectomy and fusion of lumbar intervertebral disc and other spinal surgery.
【技术实现步骤摘要】
弧形神经根拉钩
本技术涉及医用器械,具体来说,涉及一种脊柱外科手术中使用的神经拉钩。
技术介绍
神经拉钩是腰椎间盘突出髓核摘除和腰椎融合术中必需的器械,特别是椎间盘镜及Quadrant通道下椎间盘髓核摘除术中神经拉钩尤其重要。在手术时,需要助手用神经拉钩将神经根及硬膜囊拉开,暴露突出的椎间盘,然后进行椎间隙的处理。临床上常见的神经拉钩牵拉部分为“一”字形设计,比较窄而小,往往需要两把神经拉钩才能完成操作。这样会使原本狭小的手术空间更小,且仍然有大部分神经根暴露于外。因此在操作时容易误伤神经根,特别是放置融合器时容易损伤神经根;且拉钩与神经根接触处形成一个直接的剪切力,容易产生医源性损伤。同时,使用两把神经拉钩牵开后椎间盘显露,术者需使用手术刀切开,显得空间不够,特别是椎间盘镜及Quadrant通道下手术尤其明显。因此,需要迫切提供一种神经拉钩,在有限的空间内可以更安全的牵开并保护神经根、更好的显露椎间盘,避免神经根裸露,避免操作中损伤神经,使操作更加安全。为此人们研究设计了一些新的神经根拉钩,申请中国专利的有:032576315号《微创脊髓神经特制拉钩》、2011 ...
【技术保护点】
弧形神经根拉钩,由相互垂直固接的拉钩杆(2)与手柄(1)组成,拉钩杆(2)的头端是钩头(3);其特征在于它的手柄(1)的横截面为长方形实心体;拉钩杆(2)正面是由头到尾逐渐变窄的梯形、侧面厚度由头到尾逐渐增加;钩头(3) 的端钩部分是圆弧形,端钩部分向内倾斜。
【技术特征摘要】
1.弧形神经根拉钩,由相互垂直固接的拉钩杆(2)与手柄(1)组成,拉钩杆(2)的头端是钩头(3);其特征在于它的手柄(1)的横截面为长方形实心体;拉钩杆(2)正面是由头到尾逐渐变窄的梯形、侧面厚度由头到尾逐渐增加;钩头(3)的端钩部分是圆弧形,端钩部分...
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